JPH0564669A - Fire extinguishing method with flexible screen - Google Patents

Abstract

PURPOSE:To achieve fire extinguishment safely and in a short time by shielding combustion air gradually closing a massive, high pressure, and high temperature flame like an oil field fire bit by bit by stages. CONSTITUTION:Flexible screens 1a, 1b and 1c with a small opening, made of a non-combustible material are put one upon another in plurality sequentially over a fire source 2 to achieve a checking of a flame sequentially and a cutting of air. The screens 1a, 1b and 1c are dropped to cover with a large crane, a helicopter or the like from a position far from the fire source. More effective extinguishment is possible by running a high-density mud water obtained by the mixing of non--combustible particles and water or an extinguishing liquid to scatter with a pump or the like from above the screens 1a, 1b and 1c covered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention aims at extinguishing a fire by shutting off combustion air while gradually suppressing the flame in a fire in an oil field, etc. that ejects a large amount at high pressure. The present invention relates to a fire extinguishing method using a flexible net.

[0002]

2. Description of the Related Art Conventionally, a method of exploding a strong explosive has been used for extinguishing fires in oil fields. A large amount of water injection method in the surrounding closed structure. A method to stop oil by installing a temporary valve in the injection well hole. For example, existing holes are closed by new drilling from the side of the oil well hole.

[0003]

The above-mentioned method has been selected according to the situation of the fire site. However, due to the characteristics of oilfield fires, it is easy to handle large amounts of high pressure, high temperature flames. Are harder for human beings, and depending on geographical conditions, it is difficult to secure a large amount of water, or the method of using a large amount of explosives is not likely to occur. Deterioration of the environment around people becomes a social problem. The present invention has been made to solve the above-mentioned problems, and a non-combustible and flexible net having a small opening area is sequentially superposed on each other to shut off combustion air. It is an object of the present invention to provide a fire extinguishing method using a wire mesh having flexibility for the purpose of extinguishing fires safely and in a short period of time without being significantly affected by the above condition.

[0004]

[Means for Solving the Problems] In a large amount of flame, especially in the case of an oilfield fire that ejects at high pressure, it is difficult to extinguish the flame at once. Therefore, for the purpose of extinguishing the fire by following the stairs while gradually pushing the fire force, a net with a certain degree of opening and using a non-combustible material and formed to have flammability is placed away from the fire source. By using a large crane that can be operated from above, or by dropping from the sky with a helicopter, etc., the work of directly covering the fire source is repeated several times depending on the situation, and the decrease of fire, flame and flame is measured. The feature is to extinguish a fire.

[0005]

[Operation] The principle of fire extinguishing is to shut off air. However, a large amount of high-pressure flames, especially those with liquid outflow, such as oil fields,
It is difficult to shut off the air and close the spilled oil in one operation. Therefore, the present invention shuts off the progressive combustion air source by finally overlapping a net having a small opening with the fire source so that a certain degree of dispersion of the power and reduction of the pressure can be measured, and finally, This will extinguish the fire, and it will be easy to close the spilled oil after the fire is extinguished. Since the net used in the present invention is made of a non-combustible material and has flexibility, even if the fire source has some protrusion or deformation, Is effective in reducing the inflow of combustion air from other than the mesh and the amount of residual air in the mesh. Also, it should be appreciated that, in this study, stacking the nets in several layers is to reduce the nets or openings of the nets successively to shut off the air source flowing from the nets. The fire extinguishing efficiency is further improved if the meshes of the second, third, ...

[0006]

EXAMPLES Examples will be described in detail below.

In this embodiment, FIG. 1 is an explanatory view of the operation of covering a fire source with a net when a crane vehicle is used. FIG. 2 is a flame suppression state diagram by the first net, and FIG. 3 is a plurality of nets. It is a fire extinguishing completion | finish figure by coating. In the drawing, the four corners of the net 1a are suspended by ropes 4 and moved to the upper part of the fire source 2 and then the ropes 4 are loosened from the required height, or simultaneously cut, and the fire source 2
On top of it, then cover it with another net 1b, then 1
By stacking c, it is possible to gradually extinguish the flame by pushing the flame. Incidentally, the net 1a. b. In the case where a crane truck or the like is not used as a means for suspending, dropping, or covering c, the purpose can be achieved by using a helicopter or the like and dropping the net from the sky.

Further, as described in claim 2, water or a highly concentrated mud containing a mixture of fire-extinguishing liquid and non-combustible particles, a sand pump or the like is applied to the upper portion of the net 1a, 1b or 1c once coated. If it is used and dispersed, more effective fire extinguishing becomes possible.

[0009]

Since the present invention is the above method, it has the following advantages. (B) It is possible to perform work safely without humans coming into close proximity to a high temperature and dangerous fire. (B) Since the fire extinguishing work proceeds along the stairs rather than attempting a large-scale fire extinguishing work at once, it is possible to surely reach the purpose even for a large amount of high pressure flames. (C) a large amount of water is also explosive also, also, even at extra Horiho any such conditions for unnecessary work, economic and, quickly extinguishing purposes can reach the.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a net covering operation.

[Fig. 2] Flame suppression state diagram by the first net coating

[Fig. 3] Diagram of the end of fire extinguishing with multiple nets

[Explanation of Codes] 1 a. b. c ・ ・ ・ ・ Net 2 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Fire source 3 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Crane truck 4 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Rope

Claims (2)

[Claims] 1. A link made of an incombustible material or an incombustible and flexible wire material is bundled with flexibility in front, back, left and right, and molded so as to have a small opening to meet the situation at the site. A fire extinguishing method using a flexible net, comprising extinguishing a fire by sequentially covering a fire source with a plurality of layers having a net having a corresponding area. 2. The effect of extinguishing a fire is improved by spraying muddy water, which is a mixture of non-combustible particles in a high concentration, onto a flexible net coated on the fire source by using a sand pump or the like. Characteristic, according to claim 1,
A method of digesting with a flexible mesh.