FIRE-EXTINGUISHING AEROSOL COMPOSITION FOR COMMON ELECTRIC APPARATUSES

• US 20100187465A1
• Filed: 11/14/2007
• Published: 07/29/2010
• Est. Priority Date: 07/10/2007
• Status: Active Grant

• Current Assignee: Shaanxi J & R Fire Fighting Co., Ltd.
• Original Assignee: Shaanxi J & R Fire Fighting Co., Ltd.
• Inventors: Guo, Hongbao, Zhang, Zanfeng
• Granted Patent: US 8,652,346 B2
• Time in Patent Office: Days
• US Class Current: 252/5
• CPC Class Codes: A62C 3/16 in electrical installations, e.g. cableways
• CPC Class Codes: A62D 1/0092 Gaseous extinguishing substances, e.g. liquefied gases, carbon dioxide snow freons or halons A62D1/005
• CPC Class Codes: A62D 1/06 containing gas-producing, chemically-reactive components

Abstract

A fire-extinguishing aerosol composition for common electric apparatuses is disclosed, which includes oxidant, combustible, adhesive and additive. The composition of the present invention is characterized in that the oxidant is the mixture of the potassium salt and the strontium salt, in which the content of the potassium salt oxidant is more than or equal to 15 mass % to less than 20 mass % of the total mass of the composition, and the content of the strontium salt oxidant is more than 48 mass % to less than or equal to 52 mass % of the total mass of the composition. In the fire-extinguishing aerosol composition of the present invention, the mean particle diameter of all components is less than or equal to 50 μm. After quenching the fire in a space with the heavy current electric apparatus, the fire-extinguishing aerosol composition of the present invention can ensure that the insulation resistance of the common electric apparatus is ranged from 20MΩ to 100MΩ. The fire-extinguishing aerosol composition of the present invention is more reasonable than the prior art, friendly to the environment, and applicable to the common electric apparatuses.

Claims

1. A fire-extinguishing aerosol composition suitable for general electric apparatuses, comprising oxidant, combustible, adhesive, and additive;

wherein, the oxidant in the fire-extinguishing compound is a mixture of potassium salt oxidant and strontium salt oxidant;

the combustible is selected from guanidine nitrate, aminoguanidine nitrate, diaminoguanidine nitrate, or a combination thereof;

the additive is selected from aluminum powder, carbon powder, calcium carbonate, or a combination thereof;

the adhesive is selected from epoxy resin, phenolic resin, acrylic resin, or a combination thereof;

in addition, the weight percents of the components in the fire-extinguishing composition are;

Potassium salt oxidant;

≧

15% and <

20%;

Strontium salt oxidant;

≧

48% and <

52%;

Combustible;

 

 

 

10%~25%;

Additive;

 

 

 

 

2%~10%; and

Adhesive;

 

 

 

 

2%~10%.

2. The fire-extinguishing aerosol composition suitable for general electric apparatuses according to claim 1, wherein, the strontium salt is strontium nitrate, strontium peroxide, strontium carbonate, strontium sulphite, strontium pyrophosphate, strontium bromide, strontium dichromate, strontium hexaboride, strontium permanganate, or a combination thereof.

3. The fire-extinguishing aerosol composition suitable for general electric apparatuses according to claim 1, wherein, the potassium salt is potassium nitrate, potassium chlorate, potassium perchlorate, potassium chloride, potassium nitrite, potassium carbonate, potassium citrate, or a combination thereof.

4. The fire-extinguishing aerosol composition suitable for general electric apparatuses according to claim 1, wherein, the potassium salt oxidant is partially or completely replaced with sodium bicarbonate, sodium nitrate, sodium perchlorate, ammonium nitrate, ammonium perchlorate, barium nitrate, cesium nitrate, or a combination of them.

5. The fire-extinguishing aerosol composition suitable for general electric apparatuses according to claim 1, wherein, the combustible is partially or completely replaced with pentaminotetrazole or salt thereof, bitetrazole or salt thereof, diazoaminotetrazole or salt thereof, diaminotetrazole dimer or salt thereof, or a combination thereof.

6. The fire-extinguishing aerosol composition suitable for general electric apparatuses according to claim 1, wherein, the additive is partially or completely replaced with pyrocatechol potassium borate or salt thereof, hydroxybenzoic acid or salt thereof, benzoic acid or salt thereof, palmitic acid or salt thereof, ammonium nitrate, potassium perchlorate, potassium chloride, copper oxide, ferric oxide, copper phthalocyanine, potassium ferricyanide, hexamethylenetetramine, or a combination thereof.

7. The fire-extinguishing aerosol composition suitable for general electric apparatuses according to claim 1, wherein, the adhesive is partially or completely replaced with polytetrafluoroethylene, ethylene polymer, nitrocellulose, trialdehyde glyceride, polyvinyl acetate, melamine resin, or a combination thereof.

8. The fire-extinguishing aerosol composition suitable for general electric apparatuses according to claim 1, wherein, the maximum mean diameter of the oxidant, combustible, adhesive, and additive particles is smaller than or equal to 50 μ

m.

9. The fire-extinguishing aerosol composition suitable for general electric apparatuses according to claim 1, wherein, after the fire-extinguishing aerosol composition is used to extinguish fire in a space with the general electric apparatus, the insulation resistance of the general electric apparatus is within the range of 20-100MΩ

.

10. The fire-extinguishing aerosol composition suitable for general electric apparatuses according to claim 1, wherein, the composition comprises:

Potassium nitrate;

15%~19%;

Strontium nitrate;

48%~51%;

Guanidine nitrate;

10%~25%;

Aluminum powder;

 

2%~10%; and

Phenolic resin;

 

2%~10%.

11. The fire-extinguishing aerosol composition suitable for general electric apparatuses according to claim 1, wherein, the composition comprises:

Potassium perchlorate;

15%~19%;

Strontium peroxide;

48%~51%;

Aminoguanidine nitrate;

10%~25%;

Hydroxybenzoic acid or salt thereof;

 

2%~10%; and

Acrylic resin;

 

2%~10%.

12. The fire-extinguishing aerosol composition suitable for general electric apparatuses according to claim 1, wherein, the composition comprises:

Potassium nitrite;

15%~19%;

Strontium permanganate;

48%~51%;

Pentaminotetrazole or salt thereof;

10%~25%;

Ferric oxide;

 

2%~10%; and

Epoxy resin;

 

2%~10%.

13. The fire-extinguishing aerosol composition suitable for general electric apparatuses according to claim 1, wherein, the compound comprises:

Potassium carbonate;

15%~19%;

Strontium pyrophosphate;

48%~51%;

Diazoaminotetrazole or salt thereof;

10%~25%;

Potassium ferricyanide;

 

2%~10%; and

Polytetrafluoroethylene;

 

2%~10%.