Multifunctional foam generation and foam performance testing device

Abstract

The invention discloses a multifunctional foam generation and foam performance testing device. A device main body is a glass tube (15) sleeved with a water bath casing pipe (16); the lower part of theglass tube (15) is connected with a glass funnel (12) through threads; the lower part of the glass funnel (12) is connected with a gas pipeline (4); the gas pipeline (4) is sequentially connected with a three-way valve (11), a gas flow meter (10), a pressure releasing valve, (9), a buffer tank (8), a one-way valve (7), a first gate valve (6), a pressure stabilizing valve (5), a pressure meter (3)and a high-pressure air cylinder (1); and an air valve (2) is arranged above the high-pressure air cylinder (1). According to the testing device, the flow and pressure of the gas are controlled by virtue of a valve system, so that relatively high safety is realized; the foaming number of times for generating foams can be arbitrarily adjusted; the melting effects caused by different temperature tothe foam can be researched; the influences caused by the size and distribution of the foam to the foaming characteristic and the stability can be researched; and the device is simple and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of fire-fighting supplies, and in particular relates to a multifunctional foam generating and foam performance testing device. Background technique [0002] For various types of foam fire extinguishing agents, the foamability, stability (at different temperatures), expansion multiple, and the safety of the foam generating device are all important factors affecting the fire extinguishing effect. The existing devices for measuring foam foamability and stability are mainly divided into the following types: [0003] 1. Ross-Miles standard test method. During the measurement, the foam solution is impacted with the test solution of the same concentration from a certain height at the same temperature, and the foamability and stability of the foam are evaluated according to the initial foam height and the time it takes for the foam to ablate to a fixed height. [0004] 2.Waring Blender mixing method. During the m...

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Problems solved by technology

[0006] Among the above three methods, methods 1 and 2 have large measurement errors, methods 2 and 3 cannot control temperature conditions, method 3 is complicated to operate, and the other three methods cannot control the foaming ratio, and the device has a single function

[0007] The existing industrial foam generators are mainly compressed air foam and inhalation foam. Among them, the compressed air foam is compressed air that is input into the mixing chamber and mixed with the flowing liquid-phase foam solution to generate a large amount of uniform foam. Foam; for inhaled foam, the point of foam generation is at the applicator, a specially designed device that draws in ambient air while mixing with the delivered stream of foam solution to produce sprayable foam at the applicator, The resulting foam size is less uniform

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