JP2006082796A - Cover for preventing splashing of inflammable fuel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cover for preventing diffusion, namely splashing of fuel leaked from a fuel pipe in an engine room and various industrial fields by forming the cover into a sheet or a tape by using a metal wire net, and providing in the fuel pipe. <P>SOLUTION: The cover comprises the metal wire net 3, which is formed from stainless steel or copper, or a cloth, and heated aluminum foils 1 and 5 are laminated by using heat-resistant adhesives 2 and 4 in one surface or both surfaces thereof. The layered cover can be piled in multiple layers. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a coating that prevents flammable fuel from scattering. In particular, the present invention is formed in a sheet shape or a tape shape using a metal wire net, provided in a fuel pipe, and combustible fuel leaking from the fuel pipe is diffused or scattered in a ship engine room or various industrial sites. It is related with the coating | coated which prevents doing.

  Increasing maritime transport in coastal areas has led to an increase in various marine accidents such as ship fires and shipwrecks, and increased environmental pollution due to oil leaks.

  In general, a fire occurs where oxygen, the cause of a fire, and a combustible substance coexist. These are called the three elements of fire. In particular, ship engine rooms contain flammable substances such as fuel oil and lubricating oil, hot surfaces such as boilers, incinerators, steam pipes, exhaust manifolds or exhaust pipes, and fire causes such as electrical appliances. To do. Furthermore, air is supplied from the ventilator, and this air exists in the space of the engine room. Therefore, the engine room of the ship is always at risk of fire.

  Therefore, in order to prevent a fire in the engine room, there is a demand for means for shielding the scattering, that is, leakage, of flammable substances such as fuel oil and lubricating oil.

  As stated in the Technical Information of Korea Shipping No. 2003005 / IMO (International Maritime Organization) in connection with the protection and separation system of oil and fuel, the International Maritime Organization on May 15, 2002 (IMO) on the requirements of the 2000 SOLAS (Safety of Life at Sea) Rules, Chapter 2, 2 / 15.2.11, which were discussed at the 36th meeting of the (IMO) and revised on October 17, 2001 According to Articles 2, 1 and 2 of the Maritime Safety Act (Articles 23 and 2 of the Standard for Ship Engines) by the Ministry of Maritime Affairs and Fisheries The pipes must be covered to prevent fires due to oil leaks.

  In a ship, the surface temperature of the steam pipe or engine pipe is high, and when the fluid pipe is damaged, fuel oil leaks and scatters. For this reason, the steam pipe or engine pipe must be covered with a material having heat resistance, pressure resistance and hermeticity in order to prevent scattering of the combustible oil.

  In this regard, European Patent No. 0626183 B1 published on Nov. 30, 1994 discloses a “laminate material and method for preventing a combustible liquid from being ejected into a part of a ship engine room”. The laminate material includes at least one laminate structure, the laminate structure comprising a base layer formed of a fabric selected from the group of synthetic fibers, carbon fibers or glass fibers, woven or non-woven fabrics, and And aluminum foil or copper foil bonded to one or both sides of the base layer. The patent publication also preferably discloses the use of aramid fibers, in particular a material called Kevlar (registered trademark of DuPont) for bulletproof vests, as a nonwoven or woven fabric.

European Patent No. 0626183 B1

  However, although bulletproof materials generally reduce the rotational speed of bullets, bullets rotate to penetrate this material. Therefore, such bulletproof materials cannot be used as warfare materials because swords and arrows go straight without rotating.

  By the way, when the combustible fuel is scattered from the fuel pipe in the engine room of the ship, the fuel goes straight without rotating.

  Therefore, in order to prevent the flammable fuel from scattering in the engine room, it is more effective to use a war-proof material than a bullet-proof material.

  Since it can be seen that the battle vest includes a metal plate to protect the human body from a straight arrow or sword, the inventor replaces the conventional woven fabric or non-woven fabric with a metal mesh to prevent the flammable fuel from scattering. The present invention was completed by using

  An object of the present invention is to provide a coating of a metallic material that prevents the flammable fuel leaking from the fuel pipe in a ship engine room or various industrial sites from being diffused or scattered.

  Another object of the present invention is a coating that prevents the diffusion or scattering of flammable fuel that can withstand high pressures of flammable fuel and changes in the surface environment of the fuel pipe, that is, the environmental temperature, and can maintain adhesive strength at high temperatures. To provide things.

  Still another object of the present invention is a coating of a metal material applicable to general industrial equipment or power-driven machines exposed to the risk of fire due to the scattering of combustible oil, which contributes to the safety of the work environment. It is to provide a coating that can be made.

  In order to achieve the above-described object, the coating according to the present invention for preventing the scattering of combustible fuel includes a metal wire net or cloth formed of stainless steel or copper, and the metal wire net or cloth A heat-treated aluminum foil is laminated on one side or both sides using a heat-resistant adhesive.

  The thickness of the metal net or cloth is preferably 0.01 to 1.0 mm.

  Asbestos sheets can be used in place of the net or cloth formed of stainless steel or copper.

  For the heat treatment of the aluminum foil, a conventional heating or cooling method for improving brittleness of the metal material can be used. In the present invention, rapid cooling is preferred.

  Since heat resistance depends on the base layer to which the heat resistant adhesive is applied, it is important to select an appropriate heat resistant adhesive. Therefore, in the present invention, it is preferable to use a silicon adhesive that can withstand a high temperature of 200 ° C. or higher.

  The covering according to the present invention has at least one laminated structure as described above. That is, the covering of the present invention can include a plurality of the laminated structures described above.

  The covering according to the present invention for preventing the scattering of combustible fuel can be formed into a tape shape having a predetermined width and length, and also formed into a sheet shape so as to cover a wider range of the engine pipe. Can do.

In general, the pressure of the combustible fuel in the engine room of the ship or the pipe of the industrial site is almost the same as the discharge pressure of the supply pump and the transport pump, in other words, 10 kg / cm ² , and the temperature is about 90 ° C. or The temperature is higher than that. Therefore, the laminated structure that prevents the scattering caused by the combustion of such fuel must withstand such high pressures and temperatures.

  Further, when the strength of the laminated structure is low, the direct movement of the high-pressure combustible fuel ejected from the pipe of the engine room, that is, the straight scattering, bursts the laminated structure. Therefore, the laminated structure is required to have a high strength sufficient to effectively prevent the scattering.

  In the above-mentioned European Patent Publication, aluminum foil is used as a metal material, and the ballistic material, Kevlar, synthetic fiber, carbon fiber or glass fiber is formed between a pair of aluminum foils or on one side of the aluminum foil. The base layer made of a woven fabric or a non-woven fabric is provided.

  However, as described below in the first and second examples, the inventor of the present invention increased the strength when the aluminum foil was subjected to heat treatment, and instead of woven or non-woven fabric, it was made of stainless steel or copper. It has been found that the use of wire netting or asbestos sheets can significantly increase the flammable fuel scattering prevention effect.

  The coating made of the metal material according to the present invention prevents the diffusion, that is, the scattering of the combustible fuel leaking from the fuel pipe in the engine room of the ship or various industrial sites.

  Further, the coating according to the present invention for preventing diffusion or scattering of the combustible fuel can withstand the high pressure of the combustible fuel, can withstand changes in the surface environment of the fuel pipe, that is, changes in environmental temperature, To maintain strong adhesive strength.

  Furthermore, according to the present invention, the coating can be used for general industrial equipment and power-driven machines used on land that are at risk of fire due to the scattering of combustible oil, and therefore work. Contributes to environmental safety.

  The essence of the present invention will be described in detail below with reference to an embodiment associated with the accompanying drawings, but the scope of the present invention is not limited to that embodiment.

A hole having a size of 1 cm ² was drilled in the center of each of the two 80A-10K flange blinding plates. Machines for fracture strength testing including two said clogging plates were tested for standard and rapidly cooled aluminum foils of 50 mm × 50 mm dimensions, each having a thickness of 30 μm and 50 μm. Multiple test samples were prepared in order. One end of each test sample was pressurized with a hydraulic pump, and the breaking strength of the test sample when each test sample broke was measured. The test results were as shown in Table 1 below.

  Three laminate material samples were formed, a stainless wire mesh, a copper wire mesh and an asbestos sheet, each having a thickness dimension of 0.12 mm. A pair of rapidly cooled aluminum foils each having a thickness of 30 μm was attached to the upper and lower surfaces of each laminated material sample, thereby forming three laminated samples. The laminated sample was tested for fracture strength in the same manner as in Example 1. By subtracting the breaking strength of the 30 μm-thick quenched aluminum foil obtained in Example 1 from the breaking strength of the laminated sample as described above, the breaking strength of the laminated material sample is obtained. The results are shown in Table 2 below.

  The quenched aluminum foil used in Example 1 was bonded to the upper and lower surfaces of each of the stainless wire network and the copper wire network used in Example 2 with a heat-resistant adhesive, thereby forming a tape-like laminate. A structural sample was formed.

  The breaking strength of the laminated structure sample was obtained by the same method as in Example 1. The results are shown in Table 3 below.

  A cylindrical tube with a diameter of 100 mm was prepared to make its surface temperature variable. The tube was wrapped with a tape-like laminated structure sample having a width dimension of 25 mm and a length dimension of 150 mm as obtained in Example 3 including the stainless wire network. The electric heater was then turned on and the tube was heated until its surface temperature reached 240 ° C. While the tube was heated, a weight bag was suspended at one end of the laminated tape sample, and a weight was placed in the weight bag so that the load applied to the tape increased stepwise. While adding a weight to the weight bag, the load when the tape was pulled away from the tube was measured. The results are shown in Table 4 below.

温度変化による前記テープの接着強度の変化

Change in adhesive strength of the tape due to temperature change

  FIG. 1 is a cross-sectional view of a laminated structure including a heat-treated aluminum foil bonded to both surfaces of a stainless wire network with a heat-resistant adhesive.

  That is, adhesive layers (2 and 4) made of a heat-resistant adhesive are formed on the upper and lower surfaces of the stainless wire network (3), and the heat-treated aluminum foil (1 and 5) is bonded to the adhesive layer ( It is provided on each outer surface of 2 and 4). A heat-resistant adhesive layer (6) is provided on the lower surface of the lower aluminum foil (5), and a separation layer made of polyfluorinated foil (7) is adhered to the adhesive layer.

  A plurality of the laminated structures including the aluminum foil and the stainless wire net subjected to the heat treatment can be laminated.

The laminated structure as described above, that is, the coating of the present invention is more severe than the environment where the flammable fuel is scattered, that is, more than twice as severe as the environment of the pressure of 10 kg / cm ² and the temperature of 90 ° C. Under the environment, it was tested for breaking strength and adhesive strength. As a result, the laminated structure including the heat-treated aluminum foil showed superior data than the laminated structure including the standard aluminum foil. Furthermore, according to the laminated structure including the stainless wire net, an effect superior to the scattering of the combustible fuel was obtained as compared with that including the woven fabric or the nonwoven fabric.

  The coating for preventing flammable fuel from splashing according to the present invention can be used for general industrial equipment and power-driven machines used on land that are in danger of fire due to flammable oil splashing. it can.

  It will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention. The invention includes modifications and variations within the scope of the appended claims and their equivalents.

It is sectional drawing of the tape which concerns on one Example of this invention.

Explanation of symbols

1, 5 Aluminum foil 2, 4, 6 Adhesive layer 3 Stainless steel wire network

Claims (2)

  A combustible fuel comprising a metal wire net or cloth formed of stainless steel or copper, wherein a heat treated aluminum foil is laminated on one or both sides of the metal wire net or cloth with a heat resistant adhesive Anti-scattering coating.   The coating for preventing scattering according to claim 1, having at least one laminated structure including the metal wire net or cloth, the heat-resistant adhesive, and the heat-treated aluminum foil.

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