CN210270289U - Fireproof protection device for communication optical cable of electric power pipeline ditch - Google Patents

Abstract

The utility model discloses an electric power pipeline ditch communication optical cable fire prevention protector, including U type channel (5) that adopt the preparation of inflation PLASTIC LAMINATED, optical cable (1) have been placed in U type channel (5), optical cable (1) are equipped with cable sheath (2) outward, cable sheath (2) outer coating has fire protection coating (3), optical cable sheath (3) outer parcel has fire prevention clothing (4). A fire-proof box (6) is arranged on the U-shaped channel (5), and a fire-proof material is arranged in the fire-proof box (6). The utility model has reasonable design, and provides the fire protection of the electric power pipeline ditch communication optical cable for the first time; combining multiple fireproof materials to achieve the complementation of fireproof protection functions; each fireproof single product is optimally selected in fireproof performance and accessory performance; has good popularization value in the practical application process.

Description

Fireproof protection device for communication optical cable of electric power pipeline ditch

Technical Field

The utility model relates to a power cable installs technical field, specifically is an electric power pipeline ditch communication optical cable firebreak device.

Background

The communication optical cable is composed of a core and an outer sheath, wherein the core is composed of a plurality of (core) optical fibers (generally from a few cores to a few thousands of cores). Compared with the traditional symmetrical copper loop and coaxial copper loop, the transmission capacity of the optical fiber is much larger; the attenuation is less; the transmission distance is long; the volume is small; the weight is light; no electromagnetic interference exists; low cost and is currently the most promising communication transmission medium. It is being widely used for signal transmission of various departments of telecommunication, power, broadcasting and the like, and will gradually become a main body of future communication networks. The main difference between the optical cable and the electric cable is that the optical cable must have a strength member to withstand external mechanical loads in order to protect the optical fiber from various external mechanical forces.

With the gradual development of power communication networks, the use of optical cables is more and more popular, and new requirements are provided for the protection performance of the optical cables. In recent years, the accidents that the optical cable is ignited and damaged due to the explosion of the electric power company cable often occur, and the normal operation of the communication of the electric power system is seriously influenced. Therefore, in flammable and explosive environments, higher requirements are put forward to ensure normal communication of optical fibers. The research on the isolation product for fireproof protection of the pipeline optical cable solves the problem of fireproof protection of the existing power optical cable at present.

At present, the prior art does not really have a fire protection technology for communication optical cables, and only has fire blankets for protecting personnel, home and property, fire blankets for large-scale open inflammable, fire blankets on inflammable or dangerous goods and fire blankets for cremation trolleys. Fire blankets, etc. The glass fiber 12HS satin fabric which is specially processed has a compact tissue structure and high temperature resistance, can well protect an object from a thermal power and a spark area, and thoroughly prevents combustion or isolates combustion. The thickness of the fireproof blanket is only 1.0mm, the fireproof blanket can resist high temperature up to 550 ℃, and the fireproof blanket can be widely used in the aspects of ship frame construction and repair in the ship industry; the composite material can also be used in places such as petrochemical enterprises for heat insulation and insulation of metal structures and the like and needing welding, and shows good protection adaptability. The fireproof blanket is suitable for fire construction in public entertainment places such as large supermarkets, shopping malls, hotels and the like: such as welding, cutting and blocking, and to ensure the life safety of people and the integrity of property, without the risk of carcinogenesis compared to asbestos. The fireproof blanket is soft and tough, is an ideal choice for binding objects and equipment with uneven surfaces, can replace fireproof fabrics with low fireproof temperature, and is a more economic fire retardant layer and a fire barrier. The fireproof electric welding blanket can achieve different using effects after being treated by different coatings. Such as: waterproof, wear-resisting, anticorrosion, resistant oil, improvement temperature and temperature resistant time etc.. The user should select a suitable fire blanket according to the specific use requirement. When used on covering objects and equipment, a flexible and tough fire blanket should be selected. Such as fire-blocking covering cloth. The electric welding blanket with the thickness less than 0.6mm is used vertically, so that spark breakdown of the electric welding blanket can be avoided; the electric welding blanket with the thickness more than 0.6mm is horizontally used.

All the above-mentioned can not guarantee the importance of the normal use of electric power communication when the conflagration takes place and carry out the comprehensive consideration. The product is developed aiming at the current situation of the pipeline communication optical cable. The application in power communication is less, a foundation is laid for the popularization of subsequent optical cable fireproof products, and the application prospect and the popularization prospect are wide.

Disclosure of Invention

The utility model discloses to the fire prevention requirement of optical cable, provide a novel pipeline optical cable fire prevention device, take effectual fire protection to the optical cable.

The utility model discloses an adopt following technical scheme to realize:

the utility model provides an electric power pipeline ditch communication optical cable fire prevention device, includes the U type channel that adopts the preparation of inflation PLASTIC LAMINATED, optical cable has been placed to U type channel, the optical cable is equipped with the optical cable sheath outward, the optical cable sheath coats outward and has the fire protection coating, the optical cable sheath wraps up in the fire prevention clothing.

Preferably, a fire-proof box is arranged on the U-shaped channel, and a fire-proof material is filled in the fire-proof box.

Preferably, the refractory material is fine sand or an oxide material. The oxide material can be selected from alumina, silicon carbide and the like.

Preferably, the expansion fireproof plate is composed of a four-layer structure, the inner core of the expansion fireproof plate is a layer of organic/inorganic composite elastic fireproof plate, one side of the inner core is bonded with the inner side plate, the other side of the inner core is structurally reinforced by a protective net, and the surface of the inner core is covered by aluminum foil.

Preferably, fireproof asbestos is filled between the U-shaped channel and the optical cable, and further the fireproof function is achieved.

Preferably, the fireproof coating is a non-toxic expansion fireproof coating, and the thickness of the fireproof coating is 2 mm-5 mm.

Preferably, the fireproof clothes are composite aluminum foil fireproof cloth or composite aluminum foil asbestos cloth.

Preferably, the optical cable sheath is at least wrapped by three layers of fireproof clothes.

Preferably, the thickness of the U-shaped channel ranges from 10mm to 15 mm.

When the pipeline optical cable fire-proof device faces a fire source, under the condition of high temperature, the expansion fireproof plate outside the U-shaped channel is expanded into high-temperature-resistant carbide at first, the whole optical cable is wrapped, the fireproof box is prepared from a heat-labile material and only needs to meet certain strength, the fireproof box is melted and broken quickly under the condition of high temperature in combustion, the fireproof material is leaked to be matched with the asbestos material to cover the optical cable, and the fire source is further flame-retardant. The optical cable can effectively prolong the damage of a fire source to the optical cable under the further protection of the fireproof coating and the fireproof clothing, and win longer time for extinguishing the fire source.

The utility model discloses combine the flame retardant properties research of optical cable, optical cable fire prevention protection system realizes mainly adopting the principle realization of multiple fire prevention protection product combination to reach the requirement that increases optical cable fire prevention protective properties.

The first important protection is that a fireproof coating is added outside the optical cable sheath, and the flexibility, adhesive force, stability, constructability and other functions of the coating are improved by matching with a high-performance flame-retardant system. The system proportion is adjusted to achieve the purposes of balanced and stable functions and outstanding fireproof and flame-retardant performances.

The second protection is to wrap the fireproof clothing outside the optical cable with the fireproof coating. The fireproof outer protective layer with super-strong flexibility adopts advanced production lines such as automatic attaching and drying, and achieves perfect structural compounding of various base materials of the fireproof clothes.

The third protection is to use a U-shaped expansion fireproof partition plate which adopts an outer protective plate which is difficult to corrode as a support, a fireproof base material and a physical expansion system, so that the fireproof base material is quickly carbonized and expanded when being on fire to form a flame-retardant heat-insulating layer; the stability of the expanded carbon layer when the substrate is heated is greatly improved.

The utility model has reasonable design, and provides the fire protection of the electric power pipeline ditch communication optical cable for the first time; combining multiple fireproof materials to achieve the complementation of fireproof protection functions; each fireproof single product is optimally selected in fireproof performance and accessory performance; has good popularization value in the practical application process.

Drawings

Fig. 1 shows a schematic structural diagram of the present invention.

In the figure, 1-optical cable, 2-optical cable sheath, 3-fireproof coating, 4-fireproof coat, 5-U-shaped channel and 6-fireproof box.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, which are not intended to limit the invention.

A fire protection device for an optical cable for electric power pipeline ditch communication is shown in figure 1 and comprises a U-shaped channel 5 made of an expansion fire-proof plate, wherein an optical cable 1 is placed in the U-shaped channel 5, an optical cable sheath 2 is arranged outside the optical cable 1, a fire-proof coating 3 is coated outside the optical cable sheath 2, and a fire-proof coat 4 is coated outside the optical cable sheath 2.

When the expansion fireproof plate is specifically implemented, the expansion fireproof plate is composed of four layers, the inner core is an organic/inorganic composite elastic fireproof plate, one side of the inner core is bonded with the galvanized steel plate, the other side of the inner core is structurally reinforced by the protection net, and the surface of the inner core is covered by the aluminum foil. Specifically, the inner core of the fireproof plate is an organic/inorganic composite elastic fireproof plate, one side of the inner core is bonded with a No. 28 galvanized steel plate, the other side of the inner core is structurally reinforced by a hexagonal wire mesh and the surface of the inner core is covered by an aluminum foil. Fire protection plates are typically designed to block large through-penetrations in walls or floors and may also be used as fire barriers to protect cable trays, sleeves, ventilation ducts or important production equipment to prevent radiation heat, flame spread and smoke hazards. The fire-proof plate can be used as an effective interval fire-retardant partition on the laying length of a horizontal/vertical cable bridge and can be well suitable for new projects and reconstruction projects. The thickness of the fireproof plate is about 7.6mm, the maximum fireproof aging can reach 4 hours, and the fireproof plate is light in weight and can be conveniently installed by using a common hand tool. When the fire shield is exposed to a fire (at temperatures above 121 degrees), its volume begins to expand, up to 8 to 10 times its original size, and forms a high strength char layer to prevent heat conduction. This expansion process is referred to as "thermal expansion". Under normal conditions, the fire protection plate is a good heat conductor, which allows unnecessary heat generated in production and control equipment to be dissipated in time, and also minimizes the impact of the fire protection material on the current carrying capacity of the cable. The fireproof plate is used for plugging through holes of the fireproof wall and the floor slab, and is used for cable bridges, cables, pipelines and large openings. It is used for sealing the opening of concrete block or floor slab in any shape, and its protection time for preventing fire and smoke from penetrating can be up to 4 hr. The fireproof plate can also be used as a heat shield to protect a cable bridge, a sleeve, a ventilation pipeline, a control panel, a control valve and production equipment sensitive to heat; and protection is provided for the circuit relay, the distribution box and the electric cabinet, and the horizontal and vertical cable bridge frames are arranged with interval fireproof separation.

In the specific implementation, fireproof asbestos, also called asbestos fiber, is filled between the U-shaped channel 5 and the optical cable 1, and is a general name of certain silicate minerals capable of being split into elastic fiber filaments. The chemical formula is as follows: 3 MgO.2 SiO₂·2H₂O, is fibrous, green-yellow or white, white when split into wadding, silky luster, fiber rich in elasticity, and asbestos is a poor conductor of heat and electricity with acid, alkali and heat resistance. The longer fiber is used for manufacturing fireproof textile fabrics such as asbestos ropes, asbestos tapes, asbestos cloth and the like, and the shorter fiber is used for manufacturing asbestos cement products, asbestos sound insulation materials, asbestos heat insulation materials (asbestos magnesium carbonate heat insulation powder) and low-voltage electrical appliance insulation materials and the like.

In specific implementation, the fireproof coating 3 is made of nontoxic intumescent fireproof paint. The fireproof coating is characterized in that the fireproof capacity of the material can be improved, the flame spread and propagation speed can be slowed down, or the burning can be stopped within a certain time by brushing the coating on the surface of flammable materials, and the coating is called fireproof coating or flame-retardant coating. The fireproof paint is used forThe surface of the flammable base material can reduce the flammability of the surface of the coated material, retard the rapid spread of fire and is a special coating for improving the fire endurance of the coated material. The fire retardant is applied to the surface of a flammable base material to change the burning characteristics of the surface of the material and retard the rapid spread of fire; or special coatings applied to building components to increase the fire endurance of the component, known as fire-retardant coatings. The fire-proof principle of the fire-proof coating can be roughly summarized into the following five points: 1. the fireproof coating has flame retardancy or incombustibility, so that the protected substrate is not directly contacted with air, the fire of an object is delayed, and the combustion speed is reduced. 2. In addition to being inherently flame retardant or non-flammable, the fire-retardant coating also has a relatively low thermal conductivity, which retards the transfer of flame temperatures to the substrate to be protected. 3. The fire-proof coating is heated to decompose incombustible inert gas, and dilute the combustible gas decomposed by the heated protected object, so that the protected object is not easy to burn or the burning speed is reduced. 4. The nitrogen-containing fire-proof coating is heated to decompose NO and NH₃And the like, and the organic free radical is combined, so that the chain reaction is interrupted, and the temperature is reduced. 5. The expansion type fireproof coating expands and foams by heating to form a carbonaceous foam heat insulation layer to seal a protected object, so that the transfer of heat and a base material is delayed, and the object is prevented from catching fire and burning or the strength is prevented from being reduced due to the rise of temperature. The thick-coating fireproof coating for the steel structure basically comprises the following components: cementing materials (Portland cement, magnesium oxychloride, inorganic high-temperature adhesive and the like), aggregates (expanded vermiculite, expanded perlite, aluminum silicate fibers, mineral wool, rock wool and the like), chemical additives (modifiers, hardening agents, waterproof agents and the like) and water. The steel structure fire-retardant coating base material comprises Portland cement, magnesium oxychloride cement and inorganic adhesive, wherein the common inorganic adhesive comprises alkali metal silicate, phosphate and the like. However, free alkali metal ions, acid gases in the air and CO are often present in alkali metal silicates₂Etc. will react chemically therewith. When the alkali metal silicate is used alone as a base material of the coating, the coating film is not waterproof, not moisture-resistant and poor in weather resistance, and the coating is easy to crack, remove powder and the like. Therefore, if the alkali metal silicate is used as the base material of the steel structure fireproof coating, the key problem to be solved is firstlyThe problem is to modify it, i.e. to solve the problem of suppression of free alkali metal ions. The phosphate adhesive is also a common inorganic adhesive, and when the phosphate adhesive is used as a base material of the fireproof coating, the problem of reaction of alkaline oxides and acidic gases in the air is avoided, so that the physical and chemical performance indexes of the coating, such as weather resistance, water resistance and the like, are improved. However, the molar ratio of M/P (M means metal, P means phosphorus) in the phosphate-based binder has a direct influence on various properties such as storage stability of the coating material, water resistance, and adhesion between the coating material and the steel substrate. Therefore, in the development of phosphate-based fire-retardant coatings for steel structures, control of the molar ratio of the binders is important. The coating of the thick steel structure fireproof coating is thick and the using amount is large, so the self weight of the building is increased. Therefore, care should be taken in the coating to add some lightweight materials and high efficiency insulation aggregate to reduce the density of the coating. The most used lightweight insulating aggregates are mainly expanded vermiculite and expanded perlite. Vermiculite is aluminosilicate mineral containing iron and magnesium, and has a layered structure with crystal water between layers. It will creep like leech when it is heated and expanded, so it is called vermiculite. The vermiculite is dried, crushed and screened, and calcined at the temperature of 850-1000 ℃, so that particles can expand by more than 20 times to form expanded vermiculite. The density of the powder is 80-200 kg/m³The heat conductivity is 0.17-0.25W/(m.K), the fireproof performance is strong, the sound absorption and insulation performance is good, and the coating is nontoxic and tasteless and is an important doped material of the fireproof coating. Perlite is a vitreous rock, which can be expanded to about 20 times after being crushed, screened, preheated and instantaneously roasted to form expanded perlite with a honeycomb foam structure. The expanded perlite has extremely light weight, the volume weight of 80-250 kg/m3 and the thermal conductivity of 0.042-0.076W/(m.K), has the characteristics of heat preservation, heat insulation, non-combustion, no toxicity, good chemical stability and the like, and is also an important filler in the fireproof coating. The non-intumescent fire-retardant coating is mainly used for fire prevention of boards such as wood, fiber boards and the like and is used on the surfaces of wood structure roof trusses, ceilings, doors and windows and the like. The intumescent fire-retardant coating comprises a nontoxic intumescent fire-retardant coating, an emulsion intumescent fire-retardant coating and a solvent intumescent fire-retardant coating. The nontoxic intumescent fire-retardant coating can be used as fire-retardant coating or fire-retardant putty for protecting cables, polyethylene pipelines and insulation boards. Emulsion and method of makingThe intumescent fire-retardant coating and the solvent-based intumescent fire-retardant coating can be used for fire prevention of buildings, power and cables. A construction method of a fireproof coating. Knife coating method: the paint is manually scraped by using a metal or nonmetal scraper such as a hard rubber sheet, a glass fiber reinforced plastic scraper, a horn scraper and the like, and is used for scraping various thick paste type fireproof coatings and putty. Roll coating method: the roller is a hollow cylinder with small diameter, the surface of the roller is adhered with long fluff made of synthetic fiber, two ends of the cylinder are provided with 2 washers, the center of the cylinder is provided with a hole, a bent handle passes through the hole, when the roller is used, the roller is firstly soaked in paint and then is rolled on the required surface by force. Roller coating devices have been developed that use an air compressor to deliver the coating. Brushing: the brushing method is suitable for brushing objects with any shape, and most fireproof coatings can be constructed by the method. The brush coating method is easily penetrated into fine pores of the metal surface, and thus can enhance adhesion to the metal surface. The defects are that the production efficiency is low, the labor intensity is high, brush marks are left on the surface of the coating sometimes, and the decoration of the coating is influenced. The spraying method comprises the following steps: the construction method for atomizing paint by using compressed air and spray gun features uniform quality of sprayed coating and high productivity. The disadvantage is that a part of the coating is lost and the physical health of the operator is affected due to the large evaporation of the solvent. The key equipment for air spraying is the spray gun. Spray guns are generally classified into 3 types, gravity type, suction type and pressure type, depending on the paint supply method, and into two types, small-sized and large-sized, depending on the spraying capability. The coating has high viscosity, the required air pressure is large, and the nozzle has a large caliber; the coating has low viscosity and small pressure, and the nozzle can be selected to have a small aperture. The air pressure of the air spraying is generally 0.3-0.6 MPa.

In specific implementation, the fireproof clothes 4 is composite aluminum foil fireproof cloth or composite aluminum foil asbestos cloth. The optical cable sheath 2 is at least wrapped with three layers of fireproof clothes 4. The fire-proof clothes are made of the following materials: composite aluminum foil fireproof cloth or composite aluminum foil asbestos cloth. The characteristics are as follows: the fireproof heat-insulating material is fireproof, heat-insulating, metal-splashing-preventing, radiation-heat-resisting, wear-resisting, folding-resisting and flame-retardant, the radiation-heat-resisting temperature is 1000 ℃, and the environmental temperature is 200 ℃. The application is as follows: the protective clothing worn during high-temperature occasions in the industries of petroleum, chemical engineering, metallurgy, glass and the like is widely applied to occasions of oil fields, petrochemical engineering, electrician electric power, metallurgy, machinery, field fire fighting clothing and the like.

During specific implementation, the fireproof box 6 is further arranged on the U-shaped channel 5, the fireproof box 6 can also play a role of a cover plate, a fireproof material is arranged in the fireproof box 6, the refractoriness is an inorganic non-metal material with the refractoriness of not lower than 1580 ℃, and the refractoriness refers to the temperature at which the refractory material cone sample resists high temperature action and does not soften and melt down under the condition of no load. The refractory material is selected from fine sand or oxide material. The melting point of oxide materials such as alumina, lanthanum oxide, beryllium oxide, calcium oxide, zirconia, uranium oxide, magnesium oxide, cerium oxide, thorium oxide and the like is 2050-3050 ℃. Refractory compound materials such as carbides (silicon carbide, titanium carbide, tantalum carbide, etc.), nitrides (boron nitride, silicon nitride, etc.), borides (zirconium boride, titanium boride, hafnium boride, etc.), silicides (molybdenum disilicide, etc.) and sulfides (thorium sulfide, cerium sulfide, etc.) have a melting point of 2000-3887 ℃, with the most refractory being carbides.

It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several modifications and applications can be made, and these modifications and applications are also considered as the protection scope of the present invention.

Claims (9)

1. The utility model provides an electric power pipeline ditch communication optical cable fire prevention protector which characterized in that: the cable comprises a U-shaped channel (5) made of an expansion fireproof plate, wherein an optical cable (1) is placed in the U-shaped channel (5), an optical cable sheath (2) is arranged outside the optical cable (1), a fireproof coating (3) is coated outside the optical cable sheath (2), and a fireproof coat (4) is wrapped outside the optical cable sheath (2).

2. The electrical conduit trench communication optical cable fire protection device of claim 1, wherein: a fire-proof box (6) is arranged on the U-shaped channel (5), and a fire-proof material is arranged in the fire-proof box (6).

3. The electrical conduit trench communication optical cable fire protection device of claim 2, wherein: the described expansion fire-resisting plate is formed from four layers of structure, its internal core is a layer of organic/inorganic composite elastic fire-resisting plate, one side of internal core is bonded with internal side plate, and another side of internal core is structurally reinforced by using protection net and its surface is covered with aluminium foil.

4. The electrical conduit trench communication optical cable fire protection device of claim 2, wherein: fireproof asbestos is filled between the U-shaped channel (5) and the optical cable (1).

5. The electrical conduit trench communication optical cable fire protection device of claim 4, wherein: the fireproof coating (3) is made of nontoxic intumescent fireproof paint.

6. The electrical conduit trench communication optical cable fire protection device of claim 2, wherein: the refractory material is fine sand or an oxide material.

7. The electrical conduit trench communication optical cable fire protection device of claim 1, wherein: the fireproof clothes (4) are composite aluminum foil fireproof cloth or composite aluminum foil asbestos cloth.

8. The electrical conduit trench communication optical cable fire protection device of claim 7, wherein: the optical cable sheath (2) is wrapped with at least three layers of fireproof clothes (4).

9. The electrical conduit trench communication optical cable fire protection device of claim 1, wherein: the thickness of the U-shaped channel (5) is 10-15 mm.

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