Methanol Tank Fire Protection via Water Injection
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Solution Overview
Problem
Existing tank systems for methanol fuels lack effective fire prevention mechanisms, particularly in cases of tank or fuel line damage, where fuel leakage can lead to vehicle fires, and current backup power systems are limited in providing emergency electricity, heat, and fuel.
Innovation Solution
A fire protection apparatus that combines a methanol tank with a separate water tank, where a control signal from the airbag or fire warning system mixes methanol with water to create a water-methanol mixture below the ignition limit, preventing fires and extending the functionality of airbag systems for personal protection, while also enabling non-destructive restoration of the tank system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fire protection apparatus is added to the tank system, then fire prevention capability is improved, but device complexity increases
Solution Approach 1:
The fire protection apparatus merges the methanol tank and water tank into a single integrated system where water can be automatically introduced into the methanol tank through bulkheads or bellows mechanisms, combining fuel storage and fire protection functions in one system
Solution Approach 2:
Water is pre-stored in a separate water tank and positioned to be automatically introduced into the methanol tank before a fire can occur, enabling preventive action rather than reactive fire fighting. The system is pre-configured with bulkheads or bellows that can be activated by control signals from airbag or fire warning systems
2Object-affected harmful factors
If water is mixed with methanol to prevent ignition, then fire risk is reduced, but fuel availability for the engine decreases
Solution Approach 1:
The system segments the fuel storage into two separate tanks - a methanol tank for fuel storage and a water tank for fire protection - allowing independent control of each function. Water can be introduced into the methanol tank only when needed for fire prevention, leaving the majority of methanol available for engine operation
Solution Approach 2:
Water is introduced locally into the methanol tank at specific locations (through bulkheads or bellows) only when fire protection is needed, rather than continuously mixing with the fuel. This allows fire protection to be applied locally and temporarily without permanently reducing fuel availability
3Loss of time
If automatic fire protection systems are implemented, then response time to fire danger is reduced, but system cost increases
Solution Approach 1:
The fire protection system is designed to activate automatically based on pre-configured mechanisms (bulkheads that open automatically, bellows that deploy automatically) without requiring complex sensor networks, control electronics, or manual intervention. The system serves itself by using the existing airbag or fire warning signal to trigger the water introduction mechanism
Solution Approach 2:
The system changes the physical state or configuration of the tank system (opening bulkheads, deploying bellows) in response to fire danger signals, transforming the tank from a simple storage vessel into an active fire protection system without requiring continuous monitoring or complex control
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 solution effectively prevents vehicle fires by ensuring the methanol-water mixture remains below the ignition limit, allowing for rapid and non-destructive restoration of the tank system, enhancing vehicle safety and enabling the tank system to be reused, and providing cost-effective backup power with additional functions like heat production.
Implementation Method 1
water is released from the at least one water tank into the methanol or methanol is released from the at least one methanol tank into the water, resulting in a water-methanol mixture, whose material properties fall below an effective ignition limit
Data Source
AI summary
A method for preventing fires in tank systems and tank systems for methanol fuels comprising a fire protection apparatus are disclosed. The method can be effectively implemented to prevent vehicle fires, and to provide tank systems for methanol fuel with an appropriate fire protection apparatus. The method for preventing fires in tank systems is used, for example, in vehicles having a drive using a methanol-based fuel. An incombustible mixture of methanol and water being produced in an emergency. The tank systems contain at least one double-layer tank and/or at least one bell tank and/or at least one bellows-type tank.