Switchgear Gas Tank Wall Structure for 8 Bar Pressure Strength
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Solution Overview
Problem
The structural strength of existing gas tanks for gas-insulated switchgear is inadequate to handle the higher pressure required by environment-friendly insulating gases, leading to potential failure and complicating the manufacturing process with reinforcement arrangements.
Innovation Solution
A gas tank design featuring bent portions on the walls that overlap to form a stronger connection, with L-shaped support structures and a stepped structure on the bottom wall, along with rods for additional reinforcement, to enhance structural integrity and simplify assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforcement arrangements are added to improve structural strength, then the gas tank can withstand higher pressure, but the manufacturing process becomes more complicated and time-consuming
Solution Approach 1:
The gas tank employs a curved, rounded design instead of sharp corners and straight edges. The curved surfaces distribute stress more evenly throughout the structure, enhancing strength without requiring additional reinforcements. This organic form naturally resists pressure while maintaining manufacturing simplicity.
Solution Approach 2:
The invention changes the geometric parameters of the gas tank by introducing curved surfaces and rounded transitions. This parameter modification optimizes the structural strength-to-weight ratio and eliminates the need for complex reinforcement arrangements, as the curved geometry inherently resists stress concentration.
2Stress or pressure
If the gas tank is designed to withstand higher pressure for environment-friendly gas, then insulation performance requirement is met, but the existing structural strength is insufficient
Solution Approach 1:
The curved surfaces and rounded corners of the gas tank create a more uniform stress distribution under pressure. This geometric approach allows the tank to withstand the required 8 bar pressure for environment-friendly insulating gases without compromising structural integrity or requiring excessive thickening of walls.
Solution Approach 2:
By modifying the geometric parameters to include curved surfaces and optimized wall thickness distributions, the gas tank achieves the necessary pressure resistance for high-pressure operation while maintaining efficient material usage and structural strength.
Data Source
Figure 1
Figure 2~3A
Figure 3B~3C
AI summary
The present disclosure relates to a gas tank for a switchgear, assembling method and switchgear. A gas tank (1) for a switchgear, includes: a front wall (10), a rear wall (20) opposite to the front wall (10), a top wall (30), a bottom wall (40) opposite to the top wall (30) and a pair of side walls (51, 52), for forming a chamber (100), each side wall of the pair of side walls (51, 52) being attached to side edges of the front wall (10), the rear wall (20), the top wall (30) and the bottom wall (40), where each wall of the front wall (10), the rear wall (20), the top wall (30) and the bottom wall (40) includes bent portions (11, 21, 31, 41), the bent portions (11, 21, 31, 41) being arranged on opposite sides of the front wall (10), of the rear wall (20), of the top wall (30) and of the bottom wall (40) respectively and adjacent to the side edges and the bent portions (11, 21, 31, 41) being folded from the body portions (12, 22, 32, 42) of the front wall (10), the rear wall (20), the top wall (30) and the bottom wall (40), and where the front wall (10), the rear wall (20), the top wall (30) and the bottom wall (40) are configured to be mounted in place by means of a connection portion between each wall of the front wall (10), the rear wall (20), the top wall (30) and the bottom wall (40) and the bent portion (11, 21, 31, 41) of a wall adjacent to the wall. With such design, the structural strength of the gas tank (1) of the switchgear can be significantly improved.