CN212998098U - Spraying fire-fighting system - Google Patents

Abstract

The utility model discloses a spray fire-fighting system, including spraying water injection well choke and powder nozzle, spray the water injection well choke and be connected with fire-fighting water pipeline, powder nozzle and defeated powder union coupling, the direction of spun fire extinguishing agent powder in the powder nozzle be configured into with spout rivers or water smoke mix and whereabouts in the air in the water injection well choke that sprays. The technical bottleneck that sodium polyacrylate resin powder is used as a fire extinguishing agent in the prior art is solved, and the sodium polyacrylate resin powder can be smoothly and continuously sprayed into a fire scene of a closed space or the surfaces of a building and a storage tank without blocking a powder spraying port.

Description

Spraying fire-fighting system

Technical Field

The utility model relates to a fire-fighting equipment technical field, concretely relates to can be with the fire extinguishing agent powder especially super absorbent resin powder and rivers water smoke mix the fountain and hang fire extinguishing system in the air.

Background

In the prior art, fire extinguishing and smoke dust reduction in buildings or specific closed spaces, or fire extinguishing and temperature reduction in storage tanks for storing flammable and explosive substances are generally realized by directly spraying water flow and water mist through a top-fixed spray head. For example, chinese patent CN207376690U, as shown in fig. 1, discloses a water supply and drainage system based on a high-rise building, which includes a water supply system, a drainage system, and a fire fighting system, where the fire fighting system includes a fire pool a, a fire pool B disposed above the fire pool a, a main fire water pipe communicating the fire pool a with the fire pool B, a plurality of fire branch pipes communicating with the main fire water pipe, and a plurality of fire sprinklers disposed on the fire branch pipes; the main fire-fighting water pipe is provided with a fire-fighting pump, and the fire-fighting pump is connected with a control system; the main fire-fighting water pipe and the fire-fighting branch pipe are provided with a booster pump, and the booster pump is connected with the control system. For example, as shown in fig. 2, CN201426931Y discloses a fixed fire-fighting cooling water spray device for fire-fighting spray of a storage facility, which comprises a water supply pipeline and a spray device, wherein the fixed fire-fighting cooling water spray device comprises a water supply pipeline and a water spray ring pipe connected with the water supply pipeline and distributed at the periphery of the storage facility, and the water spray ring pipe is provided with a spray head. The water supply pipeline is a water supply vertical pipe arranged on the side part of the storage facility, a plurality of branch pipes are arranged on the water supply vertical pipe at intervals, and the water spray ring pipe is communicated with the water supply vertical pipe through the branch pipes. The fixed fire-fighting cooling water spray device can efficiently, stably and reliably spray water for cooling, fire control and extinguishing, and protection and isolation for flammable and explosive gas, liquid medium or operating or storage facilities such as a tower, a combustible liquid storage tank, a liquefied hydrocarbon storage tank, an oil immersed transformer and the like which are easy to cause fire due to temperature rise.

However, the top-fixed type spray fire-fighting system only has one fire-extinguishing medium, although water is still the most common fire-extinguishing agent so far, and has the advantages of low price, easy obtainment, no pollution to the environment and the like. However, because of good water fluidity, most of water is lost after being sprayed to a fire scene in a building space, which causes waste, and for fire disasters with large fire area, rapid fire development, easy reburning and high fire suppression difficulty, the top-fixed spraying system has the main function of controlling the fire spread, reducing the influence of smoke dust on people and being difficult to timely and effectively suppress the fire.

In addition, there is a spraying system for spraying mixed fire extinguishing agent in the prior art, for example, chinese patent CN 109603056 a, as shown in fig. 3, which discloses a fire-fighting spraying system for chlor-alkali production plants, comprising a fire-fighting water pipe, wherein a joint is arranged on the fire-fighting water pipe, the joint is connected with any one of the above-mentioned spray water automatic feeding structures, and a branch pipe is connected with an absorbent supply device. The spray water forms negative pressure through the Venturi tube, an adsorption effect is generated in the branch pipe, and the liquid material is automatically pressed into the inner cavity of the pipe body by the atmospheric pressure and is mixed with the spray water.

However, such mixed spraying systems generally use common industrial fire extinguishing agents, and although the fire extinguishing effect is improved, most of the existing fire extinguishing agents have great influence on human beings, so that casualty accidents can be caused directly or indirectly after people inhale the fire extinguishing agents, and the environmental pollution caused by residues of the fire extinguishing agents is serious. Moreover, the chemical fire extinguishing agent mainly plays a role in extinguishing fire, and generally has poor fire prevention effect, because the mobility of the water-based fire extinguishing agent is very difficult to control, and a stable fire-proof layer is difficult to form on the surface of an object to be protected.

Super Absorbent Resin (SAR) is a novel functional polymer material which contains strong hydrophilic groups such as carboxyl, amido and the like and has a water swelling type and three-dimensional network structure with a certain crosslinking degree. It is insoluble in water and organic solvent, and has unique performance of strong water absorption and water retention. Compared with the traditional water absorption materials such as sponge, cotton, cellulose and silica gel, the super absorbent resin has large water absorption capacity, can rapidly absorb liquid water with dozens of times or even thousands of times of self weight, has strong water retention, is not easy to lose water even under heating and pressurization, and simultaneously has some characteristics of a high molecular material. Due to these characteristics, the research and development of the super absorbent resin is very rapid, and the super absorbent resin has been widely applied to various fields such as agriculture, forestry, gardening, medical health, food industry, petrochemical industry, building materials and the like.

Superabsorbent polymers have been rapidly developed and diversified, and are classified into various methods mainly according to the source of raw materials, hydrophilization method, type of hydrophilic group, crosslinking method, and product form, and the most commonly used classification methods include starch-based superabsorbent polymers, cellulose-based superabsorbent polymers, synthetic superabsorbent polymers, protein-based superabsorbent polymers, blend and composite superabsorbent polymers, and the like.

Superabsorbent resins are capable of absorbing hundreds or even thousands of times their own mass of water because they have two conditions: one is that it has hydrophilic groups such as carboxyl group, hydroxyl group, amide group, sulfonic acid group, etc., making water absorption possible. And secondly, the water-absorbing material has a three-dimensional space network structure and is insoluble in water, so that the water absorption becomes a reality. The super absorbent resin is a three-dimensional network polymer which has hydrophilic groups and is slightly crosslinked, can absorb a large amount of water, swell and keep the water not to flow out, and has the advantages of high water absorption rate, strong water retention performance and the like.

The application of the high-water-absorption resin, in particular the high-molecular hydrogel of the polyacrylic acid high-water-absorption resin, in the field of fire extinguishment has the following advantages:

1. in the super absorbent resin, after side groups of the polyelectrolyte meet water, corresponding anion hydrophilic groups and cations (mobile ions) are ionized, and negative anions are arranged on a main chain network framework and cannot move, and the repulsion action between the negative anions and the cations generates the power for network expansion. Although the cations have certain mobility, the cations exist in the network due to the attraction and the constraint of opposite charges of the network framework, so that the concentration of the cations in the network is greater than that of the cations in external water, ions generate osmotic pressure inside and outside the network, and in addition, water can enter the three-dimensional network in a large amount in a short time due to the fact that the polyelectrolyte has groups with strong hydrophilic capacity. Under the condition of high temperature, the super absorbent resin fixed with a large amount of free water has quite large heat capacity, and can consume a large amount of heat when losing water, thereby forming effective insulation for a heat source and being beneficial to controlling fire behavior.

2. The super absorbent resin forms elastic gel after absorbing water, and the gel particles are tightly connected together without gaps for air to enter, so that the contact between a fire source and air can be isolated in a hydrogel state, the reignition of a blind fire can be prevented, objects in a fire scene covered by the gel can be protected, and the effect of quickly extinguishing the fire can be achieved.

3. The super absorbent resin forms gel after absorbing water, has excellent chemical stability, thermal stability and compatibility, has very high viscosity and very good adhesion capability, can cover the surface of an object without falling after being sprayed on a vertical surface to form enough adhesion thickness, and can effectively improve the fireproof effectiveness of unburnt objects in a fire scene.

4. The super absorbent resin is high polymer powder, is safe in storage, transportation and the like, has storage (airtight anti-water absorption) stability of more than two years, and is non-toxic; in strong fire, the resin is burnt into carbon dioxide and water after being heated and dehydrated, and is nontoxic to people and livestock; after the fire is extinguished, the residual resin in the fire scene can be naturally degraded within several months, so that the fire-extinguishing agent is non-toxic and pollution-free to people and environment, and is green and environment-friendly.

5. The super absorbent resin powder has light specific gravity and strong water absorption capacity, can absorb water more than 300 times of the self weight in a very short time, and the resin powder content in the whole water absorbent gel is generally between 0.05 and 0.5 percent of the weight of the water. Generally about 0.1 percent, a large amount of fire extinguishing gel can be formed only by little super absorbent resin powder, the fire extinguishing and preventing effect is excellent, the water can be continuously absorbed, the secondary damage caused by the flowing of the excessive water is avoided, and the water-saving effect is achieved.

6. The water absorption gel is weakly acidic, weakly alkaline or neutral, and does not corrode fire-fighting equipment.

In the prior art, a technology for preparing gel fire extinguishing by adopting an acrylic polymer exists, for example, Chinese patent CN107497088A discloses a hydrogel fire extinguishing agent and an implementation method thereof, wherein the hydrogel fire extinguishing agent is used by dissolving the hydrogel fire extinguishing agent in water, stirring for no more than 1 minute to prepare a solution with the mass concentration of 3-5 per mill, and the solution can be used for fire extinguishing; CN107789085A discloses a novel polymer gel water-based extinguishing agent, wherein when in use, the novel environment-friendly polymer gel water-based extinguishing agent is added into water with the mass of 600-1000 times, and polymer gel can be formed after stirring for 3-5 minutes and used for extinguishing fire; CN207101696U discloses a novel environment-friendly fire fighting truck, which comprises the steps of firstly putting materials into a high polymer fire extinguishing material storage tank, enabling the fire extinguishing materials to enter a fire monitor pipeline, enabling water to come out of the water tank and enter the fire monitor pipeline through a water inlet of a fire pump, enabling the water and the high polymer materials to be fully mixed in a spiral pipeline under the action of a rotary mixing device, and then sending out the water from a fire monitor; CN100444912C discloses the application of a super absorbent resin water-absorbing gel fire extinguishing agent, which is to mix synthetic resin sodium polyacrylate with 1000 times of water to generate water-absorbing gel in half an hour, the gel can be sprayed to fire by a water gun, fine powder of sodium polyacrylate is mixed with 1000 times of water and sprayed to the fire part from a spray gun, and the gel is generated to play a fire extinguishing role in 15-60 seconds.

However, these high water-absorbent resin fire extinguishing agents have significant drawbacks in their use. The process the utility model discloses people long-term test, the super absorbent resin powder expands rapidly after absorbing water to along with the increase of the volume of absorbing water, viscosity becomes bigger and bigger, until finally being close to the solidification state, the resin after the stirring is very thick and solidify very easily, hardly finds suitable mode and launches these gel water absorbent resin that are close solid-state, spray out rather than using manpower or machine to throw away together. Further, the resin may severely block the piping of the fire fighting equipment during expansion, resulting in non-sustained spray and even equipment damage due to poor water flow and closed piping. While lowering the content of the super absorbent resin powder at a glance, it is difficult to achieve an excellent fire extinguishing effect because an effective gel-like resin isolation layer cannot be formed due to too small a resin content. Therefore, the application of the above fire extinguishing system is greatly limited. Especially, in a top-fixed type spray fire-fighting system, various pipelines are used in a large quantity, and the premixed fire-fighting mode is completely unavailable.

In view of the above, there is a need in the market for a sprinkler fire protection system that can use super absorbent resin powder and water as fire extinguishing agents without clogging nozzles, continuously and stably spray a mixed gel solution to most locations in an indoor space or on an exterior surface of a building, and form a stable fire protection layer on a surface of an object to perform a fire extinguishing or preventing function.

Disclosure of Invention

The utility model aims to solve the technical problem that a spray fire extinguishing system is provided, can enough use super absorbent resin powder and water can not block up the nozzle again as fire extinguishing agent, can continuously stably spray the gel solution after mixing in the space or the whole positions on object surface.

The technical scheme of the utility model is a spraying fire-fighting system, including setting up in the space that needs the fire prevention of putting out a fire or the spray water injection well choke and the power spray nozzle on surperficial upper portion, spray the water injection well choke and be connected with fire control conduit, power spray nozzle and defeated powder union coupling, the direction of spun fire extinguishing agent powder is configured into and sprays the water injection well choke in spun rivers or water smoke and mix in the air.

Furthermore, the fire extinguishing agent powder is super absorbent resin powder, in particular to sodium polyacrylate resin powder.

Furthermore, a plurality of spray water nozzles form a spray node at the top, and water flow or water mist sprayed by the spray water nozzles can cover an area below which fire extinguishment or fire prevention treatment is needed.

Furthermore, a plurality of powder nozzles are arranged right above the spraying nodes, in the middle of the nodes or above the middle of the nodes.

Furthermore, the powder spray nozzle is arranged above and/or on the side of the spray water nozzle, and the powder spray nozzle is configured to spray extinguishing agent powder in a direction which is mixed with water flow or water mist sprayed from the spray water nozzle from the upper part and/or the side in the air.

Furthermore, the powder spray nozzle is arranged below the spray water nozzle, a water retaining cover is arranged above the powder spray nozzle, and the powder spray direction is configured to spray all around.

Further, the fire protection system is mounted above the top and/or laterally above the tank, and the spray nozzle is configured such that the emitted water stream or mist may substantially cover the top and side walls of the tank.

Furthermore, the direction of the water flow or the water mist sprayed by the spraying water nozzle is configured not to directly cover the powder spraying nozzle.

Furthermore, the spraying water nozzle and the powder spraying nozzle are integrally arranged.

Further, the powder spraying pipe is connected with a powder storage tank, and the powder storage tank is connected with a high-pressure air source; the powder storage tank and the high-pressure gas source can be connected with a plurality of independent powder spraying pipes to protect a plurality of objects or spaces to be protected.

Compared with the prior art, the utility model discloses an advantage embodies:

1. the idea of adding the super absorbent resin powder fire extinguishing agent into the spraying system and directly spraying water mist or water flow from the outside including the lower part, the side surface or the upper part of the fire extinguishing agent powder is creatively provided, so that the pipeline blockage is avoided. In the prior art, the powdery fire extinguishing agent generally needs to be fully mixed with water flow to be dissolved and exert the best fire extinguishing effect, so a designer generally thinks that the powder of the fire extinguishing agent is mixed in a pipeline in advance and then sprayed out, so that the powder and the water flow can be better mixed together, and the powder is conveyed farther by utilizing the force of the water flow, and the powder leakage cannot occur. Such agents are either insoluble in water or soluble in water, but neither agent used will turn into a high viscosity gel upon adsorption of some water. However, when the super absorbent resin powder is used as a fire extinguishing agent, the super absorbent resin powder is rapidly swollen after absorbing water and becomes a gel to seal the pipe in such a mixing manner. Therefore, the company creatively provides a technical scheme for separating the powder nozzle from the spray nozzle. The separation design makes the most of the physical properties of the super absorbent resin, especially the sodium polyacrylate resin, so that the high water absorption capacity and the high water absorption rate are not barriers to using the sodium polyacrylate as the fire extinguishing agent, but become an advantage. Experiments prove that the fire fighting system with the structure can continuously work without blockage. Under the scheme, the powder spray nozzle is arranged on the upper surface or the lateral upper surface of the spray water nozzle under most conditions, water mist sprayed by the spray water nozzle forms a water mist area at the lower side of the spray water nozzle, and then resin powder sprayed by the powder spray nozzle is sprayed or sprayed into the water mist from the upper side or the lateral surface, so that the possibility that the powder spray nozzle is wet is basically avoided. On the other hand, the powder nozzle can also be arranged below the spray nozzle, but the design needs to pay special attention to the fact that the powder nozzle is directly covered by the spray water flow, so a water retaining cover is usually added, and the nozzle is designed to a certain degree, the super absorbent resin powder is preferably sprayed to the periphery instead of being sprayed to the right lower side, and then the powder is excessively concentrated in certain areas, so that the covering degree of a fire source or a tank body is reduced, and the fire extinguishing and fire preventing effects are influenced. Basically eliminates the chance that the fire extinguishing agent powder directly enters the area near the water spraying port, can exert the advantages of the super absorbent resin to the maximum extent and reduce the disadvantages of the super absorbent resin.

2. The use mode that the super absorbent resin is used as the fire extinguishing agent in the prior fire fighting field is changed, the resin powder and the water flow do not need to be mixed in any closed or semi-closed space, and the resin powder and the water flow are directly mixed in the air from the prior pre-mixing and then used, namely the mixture is sprayed and used, so that the fire extinguishing efficiency is greatly improved; the novel fire extinguishing device does not need extra stirring equipment, equivalently, the traditional spraying fire extinguishing mode is not changed, only a group of powder spraying devices are added above or on the side surface of the spraying water nozzle, a new fire extinguishing mode for spraying powder on sprayed water mist is formed, the water and the powder are mixed and absorbed while descending, full water absorption and mixing are completed within a few seconds when the ignition point is reached, and fire extinguishing gel is just formed when the water mist reaches the ignition point. In fact, this is also the unique fire extinguishing mode that adopts sodium polyacrylate class super absorbent resin as fire extinguishing agent, and general powder fire extinguishing agent uses the utility model discloses this kind of fire extinguishing mode, degree of mixing and mixed effect can not reach the effect among the prior art completely.

3. In addition to the traditional fire extinguishing operation, the characteristic that sodium polyacrylate powder and water are mixed to generate a gel-like substance is creatively utilized, the gel-like substance is directly sprayed on the surface of a building or a storage tank and is accumulated to form a certain thickness to be attached to the surface of the building or the storage tank, and the excellent effects of fire source isolation and heat insulation are achieved. This is particularly important for the developed national field of heavy industry, because petroleum, chemical industry, smelting and other heavy industries usually store a large amount of flammable and combustible substances, and the storage capacity is large and the storage is concentrated, which is very easy to cause bad chain reaction and seriously threatens the lives and properties of people. The utility model discloses a spraying system installs the top at each storage tank, in case take place the condition of a fire, just can spout rivers to the storage tank surface immediately, and meanwhile, a large amount of sodium polyacrylate powder are sprayed in the rivers, form a large amount of gels in the short time, and finally utilize its viscidity to form the insulating layer that has certain thickness on the storage tank surface, the high temperature that can guarantee last thousand degrees also can not pierce through the insulating layer, compare in the present adoption to spraying foam or direct water cooling on the storage tank, the effect promotes huge, can effectively protect not the storage tank that catches fire by the storage tank of next door and light. Avoiding serious danger caused by the chain explosion of the dangerous chemical storage tank.

4. The utility model discloses powder nozzle and spray water injection well choke independent setting or integration setting separately, simple structure to can utilize fixing device to make up into a whole with a plurality of shower nozzles, the shower nozzle position can set up as required, can accomplish comprehensive cover in the space, the position of powder nozzle also can set up in a flexible way, can set up and spraying between the water injection well choke, and fire control effect is good. The installation and the dismantlement are more convenient and fast, and the maintenance or the replacement part is very simple, easily operation.

5. The production and modification costs are low. According to our scheme, the existing top-spraying fire-fighting system can be continuously used, and only a set of powder spraying system is added on the outside. For the manufacturer of the pipeline powder spraying system, the utility model relates to a system of singly spraying powder does not set up very complicated part, need not to make material change to current equipment and can accomplish production. To the user, current fire extinguishing system also need not to do big change, under the condition of pursuing cost balance, will reach the technical effect of the utility model, can directly utilize original water injection well choke that sprays, install powder spraying device additional alone can, greatly reduced the transformation cost.

Drawings

FIG. 1 is a schematic diagram of a spraying device in the prior art;

FIG. 2 is a schematic diagram of a spraying device in the prior art;

FIG. 3 is a schematic diagram of a spraying apparatus in the prior art;

FIG. 4 is a schematic structural view of an embodiment of the fire fighting system of the present invention;

FIG. 5 is a schematic top view of an embodiment of the fire fighting system of the present invention;

FIG. 6 is a schematic structural view of an embodiment of the fire fighting system of the present invention;

fig. 7 is a schematic structural view of an embodiment of the fire fighting system of the present invention.

Detailed Description

The following embodiments of the present invention will be described in detail, and the following embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.

Referring to fig. 4-7, the utility model relates to a fire-fighting equipment technical field provides a spray fire extinguishing system, including setting up in the spray water injection well choke 1 and the powder nozzle 2 that need put out a fire the space or surperficial upper portion of preventing fires (including setting up in the indoor space top, perhaps upper portions such as outdoor building, storage tank, housing construction, large-scale production facility), spray water injection well choke 1 and fire control conduit 3 are connected, powder nozzle 2 is connected with defeated powder pipe 6, the direction of spun fire extinguishing agent powder is configured into in the powder nozzle 2 and sprays rivers or water smoke of spun in water injection well choke 1 and mix in the air.

The utility model discloses the people has carried out the test of longer a period, mainly goes on around spraying equipment among the prior art, because there has been the top of extinguishing agent and water smoke blowout formula spraying fire control equipment of putting out a fire together among the prior art, saved development cost, the test cost is very low. But the good mixing effect cannot be achieved through a series of tests. The main problem is that the existing top-spraying two-phase mixed-spraying fire-fighting equipment basically has the water spraying ports and the powder spraying ports which are mutually nested, water spraying and powder spraying are carried out simultaneously, water and powder are mutually wrapped and sprayed out, because the high-pressure water mist has high pressure, the collision between waterlines is violent, and splashed water splash and water mist are very easy to enter the periphery of the powder spraying ports. If the super absorbent resin is used instead, compared with the existing powder extinguishing agent, the super absorbent resin is the biggest difference that the super absorbent resin is not dissolved in water and is not hydrophobic, rapidly expands after meeting water, rapidly increases in viscosity and becomes gel, the gel gradually becomes solid state and seals the peripheral inner wall of the powder spraying port 4, and finally the powder spraying port 4 is completely sealed, so that the resin serving as the extinguishing agent cannot be sprayed.

Aiming at the problem, a powder spraying nozzle 2 is creatively arranged independently of a spraying water nozzle 1, high-water-absorption resin powder, particularly sodium polyacrylate resin powder, can be directly sprayed to water flow or water mist scattered on four sides from the upper part of the water spraying nozzle, the water mist can be quickly absorbed due to the excellent water absorption rate of the sodium polyacrylate resin powder, and the water mist flies downwards to a fire point along with the water mist, the resin powder cannot fly around under the action of compressed gas and gravity, most of the resin powder can be sprayed or dropped into the water mist, and the problem of unstable air flow in a fire scene can be well solved. If only follow the angle that two kinds of materials mix, the utility model discloses a fire extinguishing systems mixed effect is not necessarily superior to current bushing type mixed fluidic system, but the utility model provides an use new problem that new fire extinguishing agent powder brought, produced fine technological effect when using super absorbent resin powder especially sodium polyacrylate resin powder as the fire extinguishing agent, full play sodium polyacrylate resin powder's characteristic, even it is not very good that the initial mix, but in the in-process that the ignition is reachd to the water column, sodium polyacrylate still can absorb the hydrone in the rivers in a large number, still can continue to absorb the hydrone after attaching to the object that catches fire, up to absorbing more than 300 times of volume of 500 times. In contrast, if the utility model discloses an use the dry powder as fire extinguishing agent among the fire extinguishing system, then mix fire extinguishing effect can be different from the mixed efflux system of bushing type far away.

The powder spray nozzle 2 is arranged above, laterally above or on the side of the spray water nozzle 1, and the powder spray nozzle 2 is configured to mix the direction of the sprayed fire extinguishing agent powder with the water flow or water mist sprayed from the spray water nozzle 1 from the top and/or the side in the air. Referring to fig. 4, it can be seen that the powder nozzle 2 is arranged above or obliquely above the spray nozzle 1, in practice, so that the resin powder sprayed from the powder nozzle 4 can be directly sprayed onto the liquid surface of the high-pressure water mist from above. Under the normal condition, the area sprayed by the traditional spraying water nozzle 1 can cover the whole fire-fighting space area, and a position of the powder spraying nozzle 2 needs to be planned, so that the resin powder sprayed by the powder spraying nozzle 2 can be uniformly sprayed on the water mist liquid surface below. Of course, this kind of planning is more important when using traditional spray water injection well choke, because the characteristics of traditional spray water injection well choke are that the discharge is bigger, but the pressure of water is the pressure of general water pipe only, relies on the physical means to let water flow around to flow out, and the distribution of rivers concentrates on in the less scope around the water injection well choke moreover. In this case, the indiscriminate uniform spraying of the powder is somewhat irretrievable because a large amount of the fire suppressant powder cannot be contacted with the water flow for a long time, which causes delay in the formation of gel substances and affects the fire extinguishing effect. Therefore, the powder sprayed from the powder spraying nozzle 2 is directly sprayed into the water flow sprayed from the spray water nozzle 1 from the side, in this case, more than 90% of the powder sprayed from the powder spraying nozzle 2 enters the water flow sprayed from the spray water nozzle 1, and forms a gel-like substance in the descending process.

The fire extinguishing agent powder is sodium polyacrylate resin powder. Through the test of our company, not all the super absorbent resin powder can reach the optimal fire extinguishing effect, the effects of water absorption mixing and state transition among various super absorbent resin powder are obviously different, the super absorbent resin powder after absorbing water is sprayed to the ignition point, and the fire extinguishing effects are different. The index such as the rate of absorbing water, the multiple of absorbing water, viscosity, density of polyacrylic acid sodium resin powder with the utility model discloses a fire extinguishing system and hybrid method agree with very much, and its condition that forms the gel state reaches very easily, can reach outstanding fire control effect.

The spraying water nozzle 1 and the powder spraying nozzle 2 can be separately and independently arranged or integrally arranged. Referring to fig. 4 and 7, in the separated mode, the powder spray nozzle 2 is arranged independently of the spray water nozzle 1, a distance exists between the spray nozzles, and the spray water nozzle 1 moves downwards, so that most of splashed water drops can be prevented from being sprayed to the powder spray port 4, and the problem that the powder spray port is blocked by gel is solved. And the separate structures are respectively independent to form a system, so that the manufacturing is simple, the maintenance is simple, and the replacement of parts is simpler. Under integrative mode (not shown), powder nozzle 2 directly sets up directly over spraying water injection well choke 1 to can form a whole through a fixed establishment and spraying water injection well choke 1, system architecture is very succinct, and the volume reduces, and the outward appearance is beautiful, and equipment is in training, transport and the use of putting out a fire, is difficult to the condition such as damage appear.

A plurality of spray water injection well choke 1 constitutes latticed or other spraying node that is fit for spraying rivers or water smoke at enclosure space or storage tank top, and the rivers or the water smoke of spray water injection well choke 1 spun can cover the below and need put out a fire or the region of fire prevention processing. Under the design, the water spraying direction of the spraying water nozzle 1 is positioned below the horizontal direction, and at least part of water mist is sprayed out to the periphery. The arrangement positions of the spray water nozzles 1 can be determined according to the working conditions of the spray water nozzles, generally speaking, the water mist or water flow sprayed by the spray water nozzles 1 is approximately in a circular shape and is diffused to the periphery, and the latticed spray nodes are the simplest and most direct mode for ensuring that the spray covers the whole range in the space. The arrangement of the spray water nozzles 1 can be completed only by simple calculation, and even if the coverage areas among the nozzles are overlapped to some extent, the spray effect cannot be greatly influenced. Meanwhile, after the position of the spraying water nozzle 1 is determined, the position of the powder spraying nozzle 2 can be roughly estimated and designed according to a flow chart of water mist sprayed by the spraying water nozzle 1 below, so that the powder spraying amount and the water spraying amount have a basically corresponding relation, and the condition that the powder spraying amount in a certain area is too small or too much is avoided. Preferably, the powder nozzles 2 are arranged right above the spraying node, in the middle of the node or above the middle of the node. Referring to fig. 6, the powder spray nozzle 2 is arranged in the middle of the spray water nozzle, and referring to fig. 5, the powder spray nozzle 2 is arranged approximately above the middle of the spray water nozzle.

The powder spray nozzle 2 is arranged below the spray water nozzle 1, a water retaining cover 9 is arranged above the powder spray nozzle 2, and the powder spray direction is configured to spray all around. Because the spray water nozzle 1 sprays water flow or water mist from the upper part of the powder spray nozzle 2, and usually sprays in a scattered mode, the spray water nozzle cannot be designed to avoid a certain area intentionally, although the powder spray nozzle 2 sprays powder downwards, the powder spray nozzle 4 generally cannot be continuously stained with water, various factors can exist, the contact between the water mist and resin powder can be generated near the powder spray nozzle 4, once the resin is contacted, the resin absorbs water rapidly and becomes gel, and then the powder spray nozzle 4 is blocked, but if a component capable of preventing the water flow from falling near the powder spray nozzle 4 is arranged, such as the water retaining cover 9, the problem can be solved simply, the effect is good, and the cost is low. Even if the super absorbent resin powder falls on the water retaining cover and absorbs water to become gel, the powder spraying port 4 cannot be blocked.

The spray water nozzle 1 belongs to a part of a traditional spray fire-fighting system, is connected with a fire-fighting water delivery pipeline 3, and can spray high-pressure water flow or water mist to cover all areas in a closed space. Referring to fig. 4 and 5, it can be seen that the fire extinguishing system of the present invention can be transformed from most of the existing fire fighting devices, and the integrated or separated powder spraying system can be added to the original spray fire extinguishing system, so as to obtain the fire extinguishing system of the present patent. This is also a big contribution of the utility model, and not simply simple put two existing equipment together, but to the characteristics of fire extinguishing agent, selected the best combination configuration mode among current fire control unit, separated powder spraying device from bushing type mixed jet equipment to set up in best position, make under the condition that uses sodium polyacrylate resin powder as fire extinguishing agent, played its maximum efficiency, and furthest reduced the cost of entire system.

Referring to fig. 4, the powder spraying pipe 6 is connected with the powder storage tank 7, and the powder storage tank 7 is connected with the high-pressure air source 8; the powder storage tank 7 and the high-pressure gas source 8 can be connected with a plurality of independent powder spraying pipes 6 to protect a plurality of objects or spaces to be protected. Powder nozzle 2 is connected with dusting pipe 6, and this also is conventional powder spray device's configuration, only the utility model discloses an embodiment independently sets up this part outside water jet equipment, simple structure, and the maintenance is disassembled easily. Of course, the powder feeding device is directly connected with other types of powder feeding devices, and the effect of the utility model is not influenced. The core is also the fire extinguishing agent sprayed by the powder spraying device, and the fire extinguishing agent can be sprayed to the liquid level of the falling water flow from the side and/or from the top, and as for the specific powder spraying mode, the skilled person can select the fire extinguishing agent according to the actual requirement.

Referring to fig. 6, which is another embodiment of the present invention, the spray nozzle 1 and the powder nozzle 2 may be disposed in the same plane. The structure has simple processing, controllable small volume and well guaranteed spraying area. Only the spray water nozzle 1 and the powder spray nozzle 2 are relatively close to each other, and there is no height difference, so the direction of the water flow or the water mist sprayed from the spray water nozzle 1 is preferably configured not to directly cover the powder spray nozzle 2.

Referring to fig. 7, the fire fighting system is installed above the top and/or above the sides of the tank 10, and the spray nozzle 1 is configured such that the sprayed water stream or mist can substantially cover the top and side walls of the tank 10. The utility model discloses an among the fire prevention usage, the core is under the condition that storage tank 10 has not caught fire yet, spouts the surface of storage tank top and lateral wall to a large amount of water and sodium polyacrylate powder together, because the gel material that both produced has very good stickness, can not be like the water cooling, need be continuous spout water on jar body surface, and only need several minutes time, it can to the surface of full jar of body of rivers spraying. Also, the gel layer adhering to the surface of the can insulates all heat outside the can, thereby keeping the temperature inside the can low. In the experiment, after the surface of the furnace with the furnace temperature of 500 ℃ is coated with the mixture of water and sodium polyacrylate powder, the temperature outside the heat insulation layer is only less than 40 ℃. Flammable and explosive substances in the tank can be well protected, and the wall hanging effect can last for more than 3 days.

Furthermore, the utility model also relates to a powder fire extinguishing agent and the mixed method that sprays rivers, powder nozzle 2 and spraying water injection well choke 1 set up in the upper portion of interior space or building, and the spun fire extinguishing agent powder is spout downwards in powder nozzle 2 to mix in the air with spraying water injection well choke 1 internal blowout rivers or water smoke, the powder fire extinguishing agent is super absorbent aqueous resin powder, especially sodium polyacrylate resin powder.

The powder spray nozzle 2 is arranged above, laterally above or on the side of the spray water nozzle 1, and the powder spray nozzle 2 is configured to mix the direction of the sprayed fire extinguishing agent powder with the water flow or water mist sprayed from the spray water nozzle 1 from the top and/or the side in the air.

A plurality of spray water nozzles 1 and powder nozzles 2 form grid-shaped spray nodes below the top of a closed space or above the top of a storage tank, water flow or water mist sprayed by the spray water nozzles 1 is mixed with a powder extinguishing agent to form a gel substance, and the gel substance covers an area below which fire extinguishing or fire prevention treatment is needed.

The utility model discloses useful part lies in: the technical bottleneck that sodium polyacrylate resin powder is used as a fire extinguishing agent in the prior art is solved, and the sodium polyacrylate resin powder can be smoothly and continuously sprayed into a fire field without blocking a water spraying opening and a powder spraying opening. A revolutionary fire extinguishing method is provided, which breaks the conventional practice that the fire extinguishing agent and water need to be mixed in advance and makes it possible for the resin powder with high viscosity and high water absorbability to become an excellent fire extinguishing agent.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (11)

1. The utility model provides a spray fire extinguishing system, characterized by, including setting up in the space that needs to put out a fire, prevent fires or the spray water injection well choke (1) and powder nozzle (2) on surperficial upper portion, spray water injection well choke (1) and fire control conduit (3) are connected, powder nozzle (2) are connected with defeated powder pipe (6), the orientation of spun fire extinguishing agent powder in powder nozzle (2) is configured into with spout rivers or water smoke in spray water injection well choke (1) mix in the air.

2. A fire fighting system as defined in claim 1, wherein the fire suppressant powder is a super absorbent resin powder.

3. A fire fighting system as defined in claim 1, characterized in that a number of the spray nozzles (1) form a spray node at the top, and the water flow or water mist sprayed by the spray nozzles (1) can substantially cover the area below where fire extinguishing or fire protection is desired.

4. A fire fighting system as defined in claim 3, characterized in that several powder nozzles (2) are arranged directly above, in the middle of or above the sprinkling nodes.

5. A fire fighting system as defined in claim 1, characterized in that the powder spray nozzle (2) is arranged above and/or to the side of the spray nozzle (1), the powder spray nozzle (2) being configured such that the direction of the sprayed extinguishing agent powder is mixed in the air from above and/or from the side with the water flow or water mist sprayed in the spray nozzle (1).

6. A fire fighting system as defined in claim 1, characterized in that the powder spray nozzle (2) is arranged below the spray nozzle (1), and a water retaining hood (9) is arranged above the powder spray nozzle (2), the direction of powder spray being arranged to be sprayed all around.

7. A fire fighting system as defined in claim 1, characterized in that the fire fighting system is mounted above the top and/or above the sides of a storage tank (10), and that the spray nozzle (1) is configured such that the sprayed water stream or mist can substantially cover the top and the side walls of the storage tank (10).

8. A fire fighting system as defined in claim 1, characterized in that the direction of the water flow or water mist emitted by the spray nozzle (1) is configured not to directly cover the powder nozzle (2).

9. A fire fighting system as defined in claim 1, characterized in that the spray nozzle (1) and the powder nozzle (2) are integrated.

10. A fire fighting system as defined in claim 1, characterized in that the powder conveying pipe (6) is connected to a powder storage tank (7), the powder storage tank (7) being connected to a high pressure gas source (8); the powder storage tank (7) and the high-pressure gas source (8) can be connected with a plurality of independent powder conveying pipes (6) to protect a plurality of objects or spaces to be protected.

11. A fire fighting system as defined in claim 2, wherein the super absorbent resin powder is a sodium polyacrylate resin powder.

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