Embedded-Pole HV Switchgear Modular Integration

Solution Overview

Problem

High-voltage electrical switchgear with embedded poles has a low degree of integration and modularization, making it difficult to assemble, disassemble, operate, and maintain, especially when requiring multiple functions simultaneously.

Innovation Solution

The Embedded-Pole HV Electrical Apparatus Combination Switchgear incorporates a pole bracket, embedded poles, spring operating mechanism, and earthing isolated switch operating mechanism, with screw rods and insulated rods extending out of a seal base, forming a compact and modular structure with interlocking mechanisms for 'five-prevention' functionality, allowing for various switchgear configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If embedded pole structure is used to reduce cabinet width, then the size of poles is greatly reduced and center distance between poles is shortened, but the degree of structural integration and modularization remains low

Engineering Contradiction:

Improvepole sizeVSAvoiddegree of structural integration and modularization

Core Design Contradiction:

Volume of moving objectVSAdaptability or versatility

Solution Approach 1:

The switchgear is divided into independent modular units (breakers, isolated switches, position switches, operating mechanisms) that can be selectively combined. Each module is self-contained with its own embedded pole structure, allowing for flexible configuration while maintaining compact dimensions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The same embedded pole structure and operating mechanism are designed to serve multiple functions across different switchgear configurations. The modular units can be combined in various ways (breaker+isolated switch, load switch+position switch, etc.) to meet different functional requirements without redesigning the basic structure.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple functions are integrated into single switchgear unit, then versatility is improved, but assembly, disassembly, operation and maintenance become more difficult

Engineering Contradiction:

Improvemultiple functionsVSAvoidassembly, disassembly, operation and maintenance

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The switchgear is divided into independent modular units (breakers, isolated switches, position switches, operating mechanisms) that can be selectively combined. Each module is self-contained with its own embedded pole structure, allowing for flexible configuration while maintaining compact dimensions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Related components are merged into integrated assemblies that function together as complete units. For example, the operating mechanism is combined with the isolated switch it operates, and the breaker is integrated with its operating mechanism, creating pre-assembled modules that are easier to handle as complete functional units rather than separate components.

Inventive Principle:

Principle #5Merging (Combining)

3Area of stationary object

If embedded pole structure is used, then cabinet width is reduced, but the function and combination of switchgear remain single with low degree of integration

Engineering Contradiction:

Improvecabinet widthVSAvoidfunction and combination

Core Design Contradiction:

Area of stationary objectVSAdaptability or versatility

Solution Approach 1:

The switchgear is divided into independent modular units (breakers, isolated switches, position switches, operating mechanisms) that can be selectively combined. Each module is self-contained with its own embedded pole structure, allowing for flexible configuration while maintaining compact dimensions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple functional modules are nested within the same cabinet space through vertical arrangement and compact positioning. The modular units can be stacked or arranged in space-efficient configurations, allowing multiple functions to coexist in a reduced footprint while maintaining accessibility for operation and maintenance.

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS9953780B2Embedded-pole HV electrical apparatus combination switchgear

Publication Date: 2018.04.24 ZHEJIANG LIMITED OF DAODU INTELLIGENT SWITCH

AI summary

A “five-prevention” interlocking pole type high-voltage switchgear includes a pole bracket, embedded poles, and spring and earthing isolated switch operating mechanisms; every three poles are arranged in a row on the bracket, the spring operating mechanism is joined with the switch operating mechanism through the chamber door interlocking piece and mechanism interlocking piece; the chamber interlocking piece, mechanism interlocking piece and door lock plate are joined, the door lock plate is opposite the opening semi-axis pinch plate in the spring operating mechanism and the door lock plate is set with a door lock pin. Chamber interlocking piece movement is used to open or close the switch operating mechanism crank operation hole and corresponds to the start of close brake operation and limit brake of opening pinch plate in the spring operating mechanism and the limiting and opening of the opening semi-axis and cable chamber door in the spring operating mechanism.