Duroplastic Coating on Fire Extinguisher Pressure Vessels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional fire extinguisher pressure vessels face premature coating damage due to chemical aggression, mechanical stress, and uneven application, leading to reduced service life and frequent replacements.
Innovation Solution
A method involving the application of duroplastic materials to both the inner and outer surfaces of preheated pressure vessels, with controlled temperature and cooling processes to ensure uniform and robust coatings, where the inner coating is applied at 250-300°C and the outer coating at a lower temperature, followed by curing and baking to achieve enhanced durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional thermoplastic coating is applied to the inner surface using a lance, then the coating process is simple and fast, but the coating is uneven and shows damage after mechanical stress
Solution Approach 1:
The invention changes the temperature parameter during coating application. The container is heated to 80-150°C before applying the thermosetting plastic coating, which improves flow and uniformity. After coating, the container is cooled to below 50°C before applying the next coating layer. This temperature control resolves the contradiction by enabling uniform coating application while maintaining process efficiency.
Solution Approach 2:
The invention applies preliminary heating to the container before coating application. By preheating the container to 80-150°C, the coating material achieves better flow properties and uniform distribution during application, eliminating the uneven coating problem while maintaining fast application through the lance method.
2Stability of the object's composition
If the container is kept cold during coating, then the coating material remains stable, but the coating does not adhere properly and flakes off under mechanical stress
Solution Approach 1:
The invention dynamically changes the temperature parameter throughout the coating process. The container is heated to 80-150°C during inner coating application to ensure proper adhesion, then cooled to below 50°C before outer coating application to maintain material stability. This parameter control resolves the contradiction between adhesion and stability.
3Productivity
If multiple coating layers are applied at the same high temperature, then the coating process is efficient, but the coating quality deteriorates and shows premature damage
Solution Approach 1:
The invention uses periodic temperature variation between coating steps. The container is heated to 80-150°C for inner coating, then cooled to below 50°C before outer coating application. This periodic temperature control ensures optimal conditions for each coating layer, resolving the contradiction between process efficiency and coating durability.
Solution Approach 2:
The invention applies preliminary cooling between coating steps. By cooling the container to below 50°C after inner coating and before outer coating, the process maintains high efficiency while ensuring optimal adhesion and quality of each layer, preventing premature damage.
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
The method extends the service life of fire extinguisher pressure vessels by providing tougher, evenly applied coatings that resist chemical and mechanical stress, reducing the need for frequent replacements.
Implementation Method 1
the pressure vessel is heated to a specified temperature
Implementation Method 2
after the container has partially cooled
Implementation Method 3
a duroplastic material is applied to the inner wall of the preheated container... a duroplastic material is applied to its outside
Implementation Method 4
followed by curing and baking to achieve enhanced durability
Data Source
AI summary
Method involves heating of container (2) preferably in heating oven on a specific temperature from 250 to 300[deg]C. A duroplastic synthetic material is applied on the inner wall of the preheated container, which rotates about its longitudinal axis. After partial cooling, if necessary, a duroplastic synthetic material is applied on outer side of intermediate storage (5) at temperatures from 165 to 250[deg]C after which container is mounted, installed and tested. An independent claim is also included for the pressure vessel.