CN202869509U - Optical fiber sensing transition box - Google Patents

Abstract

The utility model discloses an optical fiber sensing transition box. The optical fiber sensing transition box comprises an optical fiber sensing transition chip. The optical fiber sensing transition chip comprises a signal processing unit. The signal processing unit is connected with a photoelectric conversion module and a signal output. The photoelectric conversion module is connected with a laser transceiver. The laser transceiver is connected with an optical fiber. The signal processing unit, the photoelectric conversion module, and the laser transceiver are respectively connected with a power supply distribution unit. The optical fiber sensing transition box is applied to optical fiber sensing transition of a flammable and combustible object hazard real-time monitoring safety pre-warning system.

Description

The Fibre Optical Sensor transfer trunk

Technical field

The utility model relates to a kind of Fibre Optical Sensor transfer trunk.

Background technology

All have nature of dangers such as blast, inflammable, murder by poisoning, burn into radioactivity, in transportation, loading and unloading, production, use, storage, keeping process, under certain condition, can cause burning, blast, cause the chemical substance of the accidents such as personal injury and property loss, be referred to as Dangerous Chemical Substances or Hazardous Chemicals.At present common, purposes is wider has approximately more than 2200 to plant.

China State Bureau of Technical Supervision once in, nineteen ninety successively issue in 1986 " dangerous cargo product famous-brand clock " (GB6944-86) and " dangerous cargo product famous-brand clock " (GB12268-90), dangerous goods are divided into nine large classes, and have stipulated the name of an article and the numbering of dangerous cargo.

So-called inflammable and explosive chemical substance means among the standard GB/T 12268-90 " dangerous cargo product famous-brand clock " the inflammable and explosive chemical substance of part in pressure gas, liquid gas, flammable liquid, inflammable solid, spontaneously combustible and dangerous when wet, oxygenant and organic peroxide take burning, blast as key property and poisonous substances, the corrosives.At present common, purposes is wider that kind more than 1000 is arranged.The Ministry of Public Security had once issued " inflammable and explosive chemical substance fire prevention monitoring management method " (Ministry of Public Security＜1994〉the 18th command) in 1994, in the way concrete regulation has been made in the fire supervision management of the production of inflammable and explosive chemical substance, use, storage, operation, transportation.

Inflammable and explosive chemical substance has larger fire risk, in case disaster accident occurs, often harm is large, impact is large, loss is large, the difficulty etc. of putting out a fire to save life and property.

As: August in 1989, Qingdao of Shandong province Huang Island on the 12nd stock tank caused on fire from explosionly because of thunderbolt, and cofiring burnt 104 hours before and after the big fire, burnt 3.6 ten thousand tons of crude oil, burnt 5 of large oil tanks.Current big fire causes 3,540 ten thousand yuan of direct economic losses, and 14 firefighters sacrifices are arranged in big fire is puted out a fire to save life and property, and 56 people are injured; 5 oil depot workers sacrifice, and 12 people are injured.About 4 o'clock afternoon on the 5th of March in 1998, one the 400 cubic metres ball-type gas tank bottom valves explosion of Xian City, Shanxi Province management station of Gas Company air storage tank field, cause liquefied petroleum gas (LPG) to be revealed in a large number, liquefied petroleum gas (LPG) stands in organizes the relevant personnel to carry out in the carrier Process of Leaking Stoppage, because mishandling, suddenly 11 people dead (wherein firefighters 7 people) that cause on fire blasted about at 6 o'clock in afternoon, it is 31 injured that (wherein 9 people are severely injured, 3 people death is arranged again) in the rescue process, 2 400 cubic metres of spherical tanks blasts are burnt in the tank field, 4 100 cubic metres of sleeping tanks are scrapped, and 7 liquefied petroleum gas tank vehicles burn.

The a large amount of fact and lessons written in blood are told us, and the production, use, storage, operation, the unit of transportation, the individual that are engaged in inflammable and explosive chemical substance must establish the thought of " safety first ", grasp its characteristic and necessary fireproof fire-extinguishing knowledge.

Inflammable and explosive chemical substance has following feature:

1. easy firing blast: pressure gas and the liquid gas in " inflammable and explosive chemical substance fire prevention monitoring management product famous-brand clock ", enumerated, surpassing half is inflammable gas, the main hazard characteristic of inflammable gas is exactly inflammable and explosive, be in the inflammable gas within the burning concentration scope, meeting ignition source can both catch fire or explode, have in addition only the atomic little energy of need with regard to inflammable-explosive.Inflammable gas and flammable liquid, solid-phase ratio, easier burning, and burning rate is fast, and a combustion is namely to the greatest extent.The simple gas that becomes to be grouped into is more inflammable than the gas that complicated ingredient forms, combustion speed is fast, flame temperature is high, Fire explosion is dangerous large.The scope of the explosion limits of hydrogen, carbon monoxide, methane is respectively: 4.1% ~ 74.2%, 12.5% ~ 74%, 5.3% ~ 15%.Simultaneously, because to fill container be pressure vessel, be heated or the physical property blast also easily occurs during thermal radiation on the scene of a fire.

2. diffusivity: pressure gas and liquid gas so be very easy to diffusion, can spontaneously be full of any container because the intermolecular distance of gas is large, and interaction force is little.The diffusivity of gas is affected by proportion: lighter-than-air gas can unrestrictedly spread in air, and easy and air forms explosive mixture; After the heavier-than-air gas diffusion, often be gathered in earth's surface, irrigation canals and ditches, tunnel, factory building dead angle etc. and locate, not loose for a long time, meet ignition source burning or blast occur.Grasp proportion and the diffusivity thereof of gas, to instructing the fire supervision inspection, evaluation fire risk size is determined firebreak, selects the position of ventilating opening all to be of practical significance.

3. contractibility and swelling property: expanding with heat and contract with cold of pressure gas and liquid gas is more much bigger than liquid, solid, the breathing with gradient of temperature of its volume.Therefore container (steel cylinder) is wanted Fire Hazard Area, sun-proof, heat insulation in storage, transportation and use procedure, when filling gas in container (steel cylinder), note ultimate temperature pressure, and strict control fills, and prevents that overcharge, overtemperature, superpressure from causing the accident.

4. static behaviour: when pressure gas and liquid gas spray at a high speed from the mouth of pipe or breakage, because strong rubbing action can produce static.Whether charging property also is one of parameter of evaluation pressure gas and liquid gas fire risk, grasps its charging property and helps in actual fire supervision checks, instruct the precautionary measures such as checkout facility ground connection, flow control to implement.

5. corrosion toxic: mainly be that some are hydrogeneous, the gas of element sulphur has corrosive attack.Can both etching apparatus such as hydrogen, ammonia, sulfuretted hydrogen etc., can cause equipment crack, gas leakage when serious.To the container of this class gas, take certain anti-corrosion measure, its compressive resistance of periodic inspection, make provision against emergencies.Pressure gas and liquid gas except oxygen and pressurized air, mostly have certain toxic.

6. asphyxiating: pressure gas and liquid gas have certain asphyxiating (except oxygen and the pressurized air).Inflammable and explosive property and toxic easily arouse attention, and asphyxiating is often out in the cold, and especially those do not fire non-toxic gas, such as inert gases such as carbon dioxide, nitrogen, helium, argons, in case leak, all can make people's death by suffocation.

7. oxidisability: the oxidisability of pressure gas and liquid gas mainly contains two kinds of situations: a kind of is clearly to classify combustion-supporting gas as, as: oxygen, pressurized air, nitrous oxide; A kind of is to classify toxic gas as, itself does not fire, but oxidisability is very strong, with the gas that burning or blast can occur after inflammable gas mixes, mixing with acetylene such as chlorine is explosibility, and chlorine mixes with hydrogen sees the light explosibility, and fluorine gas is met hydrogen and namely exploded, the spontaneous combustion of grease contact oxygen energy, iron also can burn in oxygen, chlorine.Therefore, in fire supervision, can not ignore the oxidisability of gas, especially classify chlorine, the fluorine gas of toxic gas as, except noting its toxic, should also be noted that its oxidisability, in storing, transport and using, will separate with other inflammable gas.

Along with the progress in epoch, the application of inflammable and explosive substances is more and more extensive, and army, civilian inflammable and explosive substances spread all over all over the world, and the self-firing and self-explosion accident is of common occurrence; It is the important problem that the mankind need to be resolved hurrily that inflammable and explosive substances are implemented safe early warning.

The utility model content

The utility model technical issues that need to address just are to overcome the defective of prior art, and a kind of Fibre Optical Sensor transfer trunk is provided, and it is applied to the Fibre Optical Sensor conversion of the dangerous Real Time Monitoring safety pre-warning system of inflammable and explosive substances.

For addressing the above problem, the utility model adopts following technical scheme:

The utility model provides a kind of Fibre Optical Sensor transfer trunk, described Fibre Optical Sensor transfer trunk is equipped with the Fibre Optical Sensor conversion chip, described Fibre Optical Sensor conversion chip comprises signal processing unit, described signal processing unit is connected with photoelectric conversion module and signal output, described photoelectric conversion module connects laser transceiver, and described laser transceiver connects optical fiber.

Described signal processing unit, photoelectric conversion module and laser transceiver are connected with power distribution unit and are connected.

The utility model is used for the Fibre Optical Sensor conversion of the dangerous Real Time Monitoring safety pre-warning system of inflammable and explosive substances, be applicable to explosion-proof, the fire safety early warning such as guided missile storehouse, ammunition depot, chemicals storehouse, oil depot, fuel storage, grain depot, chemical plant, oil tanker, cargo ship, harbour, colliery, coal yard, forest, range of application is wide, has great military affairs and social benefit.

Description of drawings

Fig. 1 is Fibre Optical Sensor conversion chip theory diagram described in the utility model.

Embodiment

The utility model provides a kind of Fibre Optical Sensor transfer trunk, described Fibre Optical Sensor transfer trunk comprises the Fibre Optical Sensor conversion chip, as shown in Figure 1, described Fibre Optical Sensor conversion chip comprises signal processing unit, described signal processing unit is connected with photoelectric conversion module and signal output, described photoelectric conversion module connects laser transceiver, and described laser transceiver connects optical fiber.

Described signal processing unit, photoelectric conversion module and laser transceiver are connected with power distribution unit and are connected.

The utility model is used for the Fibre Optical Sensor conversion of the dangerous Real Time Monitoring safety pre-warning system of inflammable and explosive substances, be applicable to explosion-proof, the fire safety early warning such as guided missile storehouse, ammunition depot, chemicals storehouse, oil depot, fuel storage, grain depot, chemical plant, oil tanker, cargo ship, harbour, colliery, coal yard, forest, range of application is wide, has great military affairs and social benefit.

It should be noted that at last: obviously, above-described embodiment only is for the utility model example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being amplified out thus or change still are among the protection domain of the present utility model.

Claims (2)

1. Fibre Optical Sensor transfer trunk, it is characterized in that: described Fibre Optical Sensor transfer trunk is equipped with the Fibre Optical Sensor conversion chip, described Fibre Optical Sensor conversion chip comprises signal processing unit, described signal processing unit is connected with photoelectric conversion module and signal output, described photoelectric conversion module connects laser transceiver, and described laser transceiver connects optical fiber.

2. Fibre Optical Sensor transfer trunk as claimed in claim 1 is characterized in that: described signal processing unit, photoelectric conversion module and laser transceiver are connected with power distribution unit and are connected.

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