Positive pressure foam fire extinguishing system based on two-phase flow drive and foam generation method

Abstract

The invention provides a positive pressure foam fire extinguishing system based on two-phase flow drive and a foam generation method. The positive pressure foam fire extinguishing system based on two-phase flow drive mainly solves the problem that an existing positive pressure foam fire extinguishing system is complicated, low in reliability, limited in gas supply amount and incapable of evenly mixing a drive medium and foam mixed solution. According to the positive pressure foam fire extinguishing system based on two-phase flow drive, a liquid storage tank is connected with a first gasifier,a second gasifier and a liquid pipeline, an outlet medium of the first gasifier is used for driving a pneumatic water pump to rotate, and the medium completing driving work enters a second foam generating chamber, an inlet of the pneumatic water pump is connected with the water tank, and an outlet of the pneumatic water pump is connected with an inlet of a foam proportional container; an outlet ofthe second gasifier is connected with an outlet of the liquid pipeline in parallel and then generates gas-liquid equilibrium two-phase flow, and the gas-liquid equilibrium two-phase flow enters an inlet of a first foam generation chamber; a foam raw solution storage tank is connected to the foam proportional container, the foam proportional container is connected to the first foam generating chamber, the first foam generating chamber is connected to the second foam generating chamber, and the second foam generating chamber is connected with a spraying device.

Description

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AI Technical Summary

Benefits of technology

This patented technology describes an improved flammable liquids (FL) propellant composition called Foam Prep made up from different types of materials like alcohol/water mixtures. By adding this type of material during manufacturing processes, the resulting FL becomes stronger due to its unique structure formed when combined together. Additionally, the process involves combining both gases and liquids at once, allowing them to mix evenly throughout create stable foams while minimizing any instabilities caused by their combination. These technical benefits include increased efficiency, safety, durability, and longer life span of the fuel product itself.

Problems solved by technology

This patents discusses two technical problem addressed during developing new types of flame retardants: (1) Existing fire preventive measures require expensive infrastructure investments due to their complexity and potential failure modes, (2) Current fire safety standards mandate specific levels of fire suppression with multiple small containers containing different chemical agents like water, fuel, and fission products, making them difficult targets because they could spread over vast distances without being affected even if only one container suffocated.

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