CN201410250Y - Fire extinguishing apparatus for flammable liquid atmospheric storage tank - Google Patents

Abstract

The utility model relates to the field of fire fighting apparatus, and discloses a fire extinguishing apparatus which is particularly suitable for a flammable liquid atmospheric storage tank; the fireextinguishing apparatus comprises a generating device, an injection device and a probe starting device; wherein a sieve-type guide flow cylinder of the generating device is conical, the diameter of the upper part of the sieve-type guide flow cylinder is large, and the charging height of pyrotechnic fire-extinguishing agents and dry powder is controlled to lead powder surface to be far away from aflange at the top part of the generator about 2-4cm; the pyrotechnic fire-extinguishing agents and dry powder are charged in the space outside the sieve-type guide flow cylinder in the generator in adiffused-layering way; when the pyrotechnic fire-extinguishing agents and dry powder are charged, pressing is carried out for 3-5 times, and the powder has loosing inside and dense and dynamic outside wholly; the probe starting device comprises a fusible alloy probe, a temperature-sensing flame starting compound-starting lead wire, a fire fighting lead wire, a remote manual starting button and aremote starting case; a spraying head of the injection device is arranged at the top end in the storage tank. The fire extinguishing apparatus overcomes the technical problems that the probe startingdevice of the fire extinguishing apparatus in the prior art is single, explosion is easily caused owing to overhigh internal pressure and the like.

Description

Flammable liquid normal pressure basin extinguishing device

Technical field

The utility model relates to the fire-fighting equipment field, relates in particular to a kind of firebreak device that is specially adapted to the flammable liquid basin.

Background technology

At present, be used to protect the extinguishing device of normal pressure liquid storage tank mainly based on foaming system, water spray or water spray cooling system and dry powder system both at home and abroad.Above-mentioned fire extinguishing system all needs to install complicated power, conveying and injection apparatus outside jar; Its blow-off velocity is slow, tends to miss the best opportunity of fire extinguishing, and in various degree pollution can be caused to the product of being protected in fire extinguishing back.

Except that above, the extinguishing device of the inflammable and explosive normal pressure liquid storage tank of known protection is such as the extinguishing device of Chinese patent CN852032242 and CN93240293.3 proposition.The feature of the extinguishing device that proposes in the CN852032242 patent is that the smoke extinguishing agent of its smoke generator inside fills in around the sieve shape guide shell that is wound with fuse cord with bulk form, when fire takes place, by electric contact thermometer and start battery device, quick extinguishing.It has the following disadvantages: it is single that the first is surveyed starting drive, and device can only just can passively start after the inner breaking out of fire of basin, if can not in time manually boot when the basin outside or when closing on the basin breaking out of fire, plays prevention effect.Its two be sieve shape guide shell upper diameter in the device less than lower diameter, be unfavorable for that the initial stage of extinguishing chemical discharges, and can make the excessive explosion danger that causes of smoke generator internal pressure.The feature of the extinguishing device that proposes in the CN93240293.3 patent is smoke generator bottom by pack into the smoke extinguishing agent of compression moulding of powder charge frame, on extinguishing chemical, adorn an igniting tablet and electric igniter, topmost and igniting tablet and electric igniter are at a certain distance with screen cloth a certain amount of powder extinguishing agent of packing into, when fire takes place, by electric contact thermometer and start battery electric igniter, by the igniting tablet smoke extinguishing agent that ignites, carry out dry powder and implement fire extinguishing.This device has the following disadvantages: the first is the same with the described device of CN852032242 patent, and to survey starting drive single, can only passively start, and no remote manual starts function, does not have the prevention defencive function.It two is might cause the ignition trigger function of device unreliable when too much powder extinguishing agent becomes scattered about on igniting tablet and the electric igniter.It three is that smoke extinguishing agent is pressed into after the unit combination, smoke extinguishing agent is not successively to burn to cause leap up fire or detonation easily when burning in smoke generator: the gentle cognition of heat that instancy of combustion generates produces high pressure high temperature dependence in smoke generator, pressure sharply increases and the generation explosion danger, and a large amount of heats that generate cause spot fire because difficult scattering and disappearing can cause the appearance temperature of smoke generator too high.

The utility model content

The purpose of this utility model is to overcome the defective of known technology, provides a kind of simple in structure, and extinguishing property is reliable, the extinguishing device that security performance is good.

The utility model flammable liquid normal pressure basin comprises generating means, injection apparatus and detection starting drive with extinguishing device.

Generating means comprises generator, sieve type guide shell, fire-fighting lead-in wire medicine core, firework type extinguishant and powder extinguishing agent.The sieve type guide shell of generating means is taper, and upper diameter is bigger.The shot elevation of firework type extinguishant and dry powder is controlled at powder from 2～4 centimetres of generator top flange; Firework type extinguishant and dry powder are the shape layering of loosing and are loaded in the outer space of sieve type guide shell in the generator; Firework type extinguishant and dry powder powder charge time-division compress for 3～5 times, medicament integral body be outer tight in loose shape

Injection apparatus comprises leads smoke pipe, shower nozzle and potted component, is tightly connected with potted component between all smoke pipes, the shower nozzle, and shower nozzle is arranged on the basin inner tip.

Survey starting drive and comprise that fusible alloy probe, temperature-sensitive flame start compound startup lead-in wire, fire-fighting lead-in wire, remote manual start button and remote activation box.

The course of work of the utility model fire extinguisher is: after the inner breaking out of fire of basin, the fusible alloy probe melts automatically when temperature reaches 110 ℃ ± 5 ℃ and comes off; Being loaded on the inner temperature-sensitive flame startup composite leg of fusible alloy probe exposes out, automatically start at contact flame or when temperature reaches 170 ℃ ± 20 ℃ and to light the fire-fighting lead-in wire, and then ignite and be wrapped in fire-fighting lead-in wire medicine core on the sieve type guide shell with a constant pitch; After the firework type extinguishing medium is lighted in a spiral manner by fire-fighting lead-in wire medicine core, the medicament of initial combustion produces the spiral high pressure draught consistent with ignition way, firework type extinguishant in bulk is suspended state in smoke generator interior section reaction, is carrying powder extinguishing agent and is being brought into to lead by spiral high pressure draught and the gas that self produces and continue reaction in the smoke pipe; (1.3～1.8Mpa) are injected in the basin by shower nozzle the mixing firing-fighting medium that is produced with very high pressure; At first flame in the jar is carried out machine cuts, compacting flame, the mode with total flooding covers flame at last, suffocate by inert gas, the heat absorption of solia particle, chain is suppressed at the purpose that reaches fire extinguishing in the 30s.When the connecting line of basin outside or close region breaking out of fire, can artificially start package unit by the remote activation button, the basin upper space is carried out inerting in advance, reach the safety precautions purpose.

Advantage of the present utility model is: (1) has realized effective combination of firework type extinguishant and powder extinguishing agent, and without water power, easy maintenance, in the fire-fighting protection of the independent tank in remote place, have no comparable like superiority.(2) ignite and reactive mode uniqueness and the bigger structure of sieve shape guide shell top bore, avoided detonation, the explosion danger hidden danger of the firework type extinguishing medium of state filling in bulk, improved EJECTION VELOCITY and blow-off velocity, the process of generally putting out is no more than 30s.(3) avoided firework type extinguishant that complete reaction takes place in generator, the pressure and temperature of generator when having reduced systemic effect has been eliminated the danger of spot fire and blast, has improved the security of device.(4) Starting mode variation has ensured the reliability of system, and can realize the purpose of safety precautions by the remote activation button.

Description of drawings

Fig. 1 is installed in the structural representation of flammable liquid normal pressure basin for the utility model extinguishing device;

Fig. 2 is the structure and the charging means schematic diagram of the generator of the utility model extinguishing device.

Among Fig. 1, Fig. 21, generator, 2, terminal box, 3, the remote activation box, 4, lead smoke pipe, 5, the remote manual start button, 6, the fire-fighting lead-in wire, 7, fusible alloy probe, 8, temperature-sensitive flame starts compound startup lead-in wire, and 9, shower nozzle, 10, potted component, 11, sieve type guide shell, 12, firework type extinguishant, 13, powder extinguishing agent, 14, fire-fighting lead-in wire medicine core.

The specific embodiment

Further specify this use new technique scheme below in conjunction with embodiment.Wherein generating means (1) can be installed near the basin Anywhere, is not considered as the restriction to technical solutions of the utility model.

Fig. 1 is installed in the structural representation of flammable liquid normal pressure basin for the utility model extinguishing device;

Fig. 2 is the structure and the charging means schematic diagram of the generator of the utility model extinguishing device.

The utility model flammable liquid normal pressure basin comprises generating means, injection apparatus and detection starting drive with extinguishing device.

Generating means comprises generator (1), sieve type guide shell (11), fire-fighting lead-in wire medicine core (14), firework type extinguishant (12) and powder extinguishing agent (13) composition.Sieve type guide shell (11) is taper, and upper diameter is greater than lower diameter.

Injection apparatus is formed by leading smoke pipe (4), shower nozzle (9) and potted component (10), is tightly connected with potted component (10) between all smoke pipes (4), the shower nozzle (9), and shower nozzle (9) is arranged on the basin inner tip.。

The detection starting drive starts compound startup lead-in wire (8), fire-fighting lead-in wire (6), terminal box (2), remote manual start button (5) and remote activation box (3) by fusible alloy probe (7), temperature-sensitive flame and forms.

Claims (4)

1, flammable liquid normal pressure basin extinguishing device comprises generating means, injection apparatus, detection starting drive;

Generating means comprises generator, sieve type guide shell, fire-fighting lead-in wire medicine core, firework type extinguishant and powder extinguishing agent;

Injection apparatus comprises leads smoke pipe, shower nozzle and potted component;

It is characterized in that: firework type extinguishant and dry powder are the shape layering of loosing and are loaded in the outer space of sieve type guide shell in the generator; Described detection starting drive comprises that fusible alloy probe, temperature-sensitive flame start compound startup lead-in wire, fire-fighting lead-in wire, remote manual start button and remote activation box.

2, flammable liquid normal pressure basin extinguishing device as claimed in claim 1, it is characterized in that: the shot elevation of firework type extinguishant and dry powder is controlled at powder from 2～4 centimetres of generator top flange.

3, flammable liquid normal pressure basin extinguishing device as claimed in claim 1, it is characterized in that: described shower nozzle is arranged on the basin inner tip.

4, flammable liquid normal pressure basin extinguishing device as claimed in claim 1, it is characterized in that: described sieve type guide shell is taper, and upper diameter is bigger.

Images