Unlock instant, AI-driven research and patent intelligence for your innovation.

Fire-extinguishing method and apparatus

A technology of fire-extinguishing equipment and fire-extinguishing medium, applied in fire rescue and other directions, can solve problems such as unfavorable technical and cost-effectiveness, and achieve the effect of small amount of damage

Inactive Publication Date: 2010-11-17
MARIOFF CORP OY
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, spraying "too much" close to the source is disadvantageous in terms of technology and cost-effectiveness, since the source must be sized for this maximum flow

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fire-extinguishing method and apparatus
  • Fire-extinguishing method and apparatus
  • Fire-extinguishing method and apparatus

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] Table 1 and figure 2 Show another embodiment of the present invention by means of an example. The K value of the sprinkler head used in this example is 20. The flux density (flux) of the water sprayed in the field is generally kept constant, and its value is 5mm / min. Change the supply pressure p of the sprinkler heads, thereby obtaining the distance S between adjacent sprinkler heads by calculation. This is achieved by using the formula Q=k(p) 1 / 2 And get. Q is the volume flow (l / min), p is the supply pressure (bar), and k is the so-called K value of the nozzle. In addition, in Table 1, the number of spray heads required in a 72 square meter surface area has been defined for different supply pressure values. The protection requirements of this area comply with the European Sprinkler Standard "Ordinary Fire Insurance Group 1" (OH1).

[0023] Table 1

[0024]

Sprinkler

K value

Spray in the field

Of the extinguishing medium

Water flux density

Su...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method in the fire protection of an area, in which in the area are arranged several fire extinguishing spraying heads (1) which, when activated, spray extinguishing medium in the area, and between which adjacent spraying heads there is a spacing (S1, S2). The spraying heads (1) are arranged in the area (A1, A2) by defining a water flux density of extinguishing medium required for protecting the area being protected and by defining feed pressure (p1, p2) of extinguishing medium for the spraying heads (1) of a certain area or section of an area, whereby the spacing (S1, S2) of adjacent spraying heads depends on the magnitude of the feed pressure (p1, p2) and a K value of the spraying head so that the water flux density of extinguishing medium intended for spraying is substantially constant. The invention also relates to an apparatus.

Description

Technical field [0001] The present invention relates to a field fire fighting method according to the preamble of claim 1. The invention also relates to a fire extinguishing device according to the preamble of claim 10. Background technique [0002] The size of the sprinkler facility (dimension) is conventionally set so that when the sprinkler has been triggered for a specific operating area (area), the water flow in the protected area or in the protected entire building The volume density is at least the given limit value. In Europe, the limit value of extinguishing medium flux density (specifically, water flux density) is 5mm / min (=5l / min / m) according to the standard sprayer class (OH) 2 ). The operating area depends on the sprinkler grade group, and its minimum value is 72m 2 , And its maximum value is 360m 2 . In addition, for conventional sprinklers, the maximum specific protection area of ​​the sprinkler and the maximum distance between adjacent sprinklers have been defi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A62C35/00
CPCA62C3/0292A62C31/00A62C35/58A62C35/68
Inventor G·松德霍尔姆
Owner MARIOFF CORP OY