Preparation method of solution for fine water mist extinguishment

A fine water mist and solution technology, applied in fire prevention equipment, etc., can solve the problems of little improvement in fire extinguishing effect, high equipment requirements, serious pollution, etc., to achieve improved fire extinguishing effect, good atomization effect, and improved fire extinguishing efficiency

Active Publication Date: 2013-05-22
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The technical problem to be solved by the present invention is to provide a preparation method for a solution for fine water mist fire extinguishing, and the solution for fine water mist fire extinguishing prepared by this method can realize bubble atomization with additives by medium pressure and single tube delivery method The fine water mist overcomes the shortcomings of the existing additives used for fine water mist that the fire extinguishing effect is not much improved, serious pollution is caused, the cost is high and the equipment requirements are high.

Method used

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  • Preparation method of solution for fine water mist extinguishment

Examples

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Comparison scheme
Effect test

Embodiment 1

[0027] Step 1, setting up the recipe for the solution used for water mist fire extinguishing

[0028] The mass percent of sodium chloride is 2%, and the dissolved amount of carbon dioxide is the tap water of saturated dissolved amount and surplus;

[0029] The second step is to prepare the solution for water mist fire extinguishing

[0030] Under the condition that the temperature is 20°C, take the required amount of sodium chloride and tap water according to the ratio of the first step to prepare a sodium chloride solution with a mass percentage concentration of 2%, put it in the liquid storage tank, and then pour it into the liquid storage tank. Add carbon dioxide gas with a pressure of 3MPa into the tank, and dissolve it into the above sodium chloride solution to make it reach the first step. Set the dissolved amount of carbon dioxide as the saturated dissolved amount, and the top of the liquid storage tank accounts for 1 / 5 of the total volume of the tank. The space is car...

Embodiment 2

[0040] Step 1, setting up the recipe for the solution used for water mist fire extinguishing

[0041] The mass percentage of sodium chloride is 0.5%, the carbon dioxide dissolved amount is the tap water of saturated dissolved amount and surplus;

[0042] The second step is to prepare the solution for water mist fire extinguishing

[0043] Under the condition that the temperature is 5°C, take the required amount of sodium chloride and tap water according to the ratio of the first step to prepare a sodium chloride solution with a mass percentage concentration of 0.5%, put it in the liquid storage tank, and then pour it into the liquid storage tank. Add carbon dioxide gas with a pressure of 1.5MPa into the tank, and dissolve it into the above sodium chloride solution to make it reach the first step. Set the dissolved amount of carbon dioxide as the saturated dissolved amount, and the top of the liquid storage tank accounts for 1 / 5 of the total volume of the tank. The space in th...

Embodiment 3

[0048] Step 1, setting up the recipe for the solution used for water mist fire extinguishing

[0049] The mass percent of sodium chloride is 5%, and carbon dioxide dissolved amount is the tap water of saturated dissolved amount and surplus;

[0050] The second step is to prepare the solution for water mist fire extinguishing

[0051] Under the condition that the temperature is 40°C, take the required amount of sodium chloride and tap water according to the ratio of the first step to prepare a sodium chloride solution with a mass percentage concentration of 5%, put it in the liquid storage tank, and then pour it into the liquid storage tank. Add carbon dioxide gas with a pressure of 5MPa into the tank, and dissolve it into the above sodium chloride solution to make it reach the first step. Set the dissolved amount of carbon dioxide as the saturated dissolved amount, and the top of the liquid storage tank accounts for 1 / 5 of the total volume of the tank. The space is carbon dio...

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Abstract

The invention provides a preparation method of a solution for fine water mist extinguishment, relating to an extinguishment composition. The preparation method comprises the steps of preparing a sodium chloride solution with the mass percentage concentration of 0.5-5% by taking the required amount of sodium chloride and tap water according to sodium chloride with mass percentage of 0.5-5%, carbon dioxide with saturated dissolved load and the balance of tap water at temperature of 5-40 DEG C; putting into a liquid storage tank; introducing carbon dioxide gas with pressure of 1.5-5MPa into the liquid storage tank so as to be dissolved into the sodium chloride solution to achieve the purpose that the carbon dioxide is of saturated dissolved load set in the first step, wherein the top space of the liquid storage tank is filled with carbon dioxide and the pressure is maintained to be 1.5-5MPa; and preparing the solution for fine water mist extinguishment. The solution is conveyed with a single tube at medium pressure so as to realize atomized fine water mist with an additive, so that the defects that the existing additive for fine water mist has poor extinguishment effect, is serious in pollution, has high cost and high equipment requirements are overcome.

Description

technical field [0001] The technical solution of the present invention relates to a fire extinguishing composition, specifically a preparation method for a solution for fine water mist fire extinguishing. Background technique [0002] Water mist fire extinguishing technology has the advantages of no environmental pollution, low water consumption, low price, and little damage to protected objects, so it occupies an important position in sprinkler fire extinguishing technology and is regarded as the main alternative direction of halon fire extinguishing technology. [0003] The recognized fire extinguishing mechanism of fine water mist is that since the total surface of water increases greatly after atomization, the water vaporizes rapidly, which will inhibit the generation and spread of fire from the following three aspects: first, the latent heat of vaporization absorbed by the evaporation process cools the combustion Second, the high-density water mist and the heat-absorbin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/02
Inventor 吴晋湘苟湘刘联胜王恩宇
Owner HEBEI UNIV OF TECH
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