Wireless Explosion-Proof Apparatus Antenna Grounding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless explosion-proof apparatuses are heavy due to pressure-tight chambers and protective covers, limiting installation locations and suffering from material degradation issues, which restricts their performance and temperature range.
Innovation Solution
A wireless explosion-proof apparatus design that omits pressure-tight chambers, using a short stub module to secure electric conduction between the antenna connector and ground, allowing the antenna to be exposed and connected externally, enabling high-performance wireless communication while adhering to Type-n explosion-proof specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure-tight chambers and protective covers are used to ensure explosion-proof performance, then reliability is improved, but weight increases and material limitations arise
Solution Approach 1:
The patent extracts and removes the pressure-tight chamber and protective cover from the traditional explosion-proof structure. Instead of enclosing the antenna in a heavy pressure-tight chamber, the invention exposes the antenna externally while maintaining explosion-proof performance through intrinsic safety design and proper grounding, thereby significantly reducing product weight and eliminating material limitations.
Solution Approach 2:
The patent replaces the mechanical pressure-tight enclosure system with an electrical/intrinsic safety-based system. Rather than relying on physical containment through heavy chambers and glass/resin covers, the invention uses proper grounding, surge protection circuits, and intrinsic safety design to achieve explosion-proof performance, eliminating the need for heavy mechanical protective structures.
2Reliability
If pressure-tight chambers with glass or resin covers are used to protect the antenna, then explosion-proof performance is improved, but material degradation and temperature range limitations occur
Solution Approach 1:
The patent removes the glass or resin protective covers from the antenna assembly. By exposing the antenna externally without these material covers, the invention eliminates the temperature range limitations and material degradation issues inherent in glass and resin, while maintaining explosion-proof performance through alternative safety mechanisms.
Solution Approach 2:
The patent replaces the material-based protective system (glass/resin covers) with an electrical safety system. Instead of relying on the thermal and mechanical properties of glass or resin to contain explosions, the invention uses intrinsic safety design, proper grounding, and surge protection to achieve explosion-proof performance without temperature range limitations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design reduces product weight, eliminates material limitations, and allows for flexible antenna placement, achieving high-performance wireless communication without the need for pressure-tight chambers and materials like glass or resin.
Implementation Method 1
a short stub module is disposed in the explosion-proof chamber and on a connection line through which one end of a central conductor of a connector portion for an antenna is connected to a communication module, and the short stub module secures electric conduction between the one end of the central conductor and the ground so as to keep potential of the central conductor at certain potential
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A wireless explosion-proof apparatus includes an antenna, an explosion-proof chamber, a communication module disposed in the explosion-proof chamber, the communication module configured to transmit and receive a wireless signal through the antenna, a connector portion having a central conductor, to which the antenna is electrically connected, the central conductor having one end connected to the communication module through a connection line and the other end exposed to the outside of the explosion-proof chamber, and a short stub module disposed in the explosion-proof chamber and disposed on the connection line, the short stub module configured to secure electric conduction between the one end of the central conductor and a ground so as to keep potential of the central conductor at certain potential.