CN114191740A

CN114191740A - Storage tank fire extinguishing device and outer floating roof storage tank

Info

Publication number: CN114191740A
Application number: CN202111367673.7A
Authority: CN
Inventors: 王洪光; 肖吉; 赵志敏; 高桂芳; 王文彬; 孙苏林
Original assignee: Beidou Qiming Beijing Energy Science And Technology Service Co ltd
Current assignee: Beidou Qiming Beijing Energy Science And Technology Service Co ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-03-18

Abstract

The application discloses a storage tank fire extinguishing device, which at least comprises a tank body, a floating top, a sealing structure and a fire extinguishing mechanism, wherein the floating top and the sealing structure are arranged in the tank body; the sealing structure is arranged between the floating top and the inner wall of the tank body, and a vacant area is formed between the sealing mechanism and the inner wall of the tank body; when a fire breaks out in the tank body, the fire extinguishing mechanism sprays fire extinguishing medium into the vacant area. This application is through the direct fire extinguishing medium that sprays in the vacant region between sealing mechanism and the internal wall of jar of putting out a fire mechanism for it is quicker to put out a fire.

Description

Storage tank fire extinguishing device and outer floating roof storage tank

Technical Field

The application relates to the field of storage tank fire extinguishing, in particular to a storage tank fire extinguishing device and an external floating roof storage tank.

Background

Along with the rapid development of domestic industry, the demand for crude oil is more and more, and in order to meet the current industrial development and ensure that the crude oil reserve can reach the national energy reserve safety, the demand for crude oil storage tanks is increased year by year, wherein, the common crude oil storage tanks comprise an outer floating roof storage tank and an inner floating roof storage tank.

Taking an external floating roof storage tank as an example, the method adopted for the floating plate fire of the external floating roof storage tank is to arrange a foam fire-fighting pipe at the top of the storage tank, and when the fire occurs, the fire-fighting foam is downwards ejected through equipment such as a pipeline at the top, and the like to extinguish the fire of a floating plate sealing ring of the storage tank so as to achieve the purpose of foam fire-fighting and fire-extinguishing.

However, the above fire extinguishing method has the following problems in the actual fire extinguishing process: 1. when a fire disaster happens, the distributed fire-fighting foam spraying is carried out from the top of the storage tank, the flame temperature caused by the combustible materials of the crude oil and the sealing ring can reach more than 1000 ℃, the fire-fighting foam is extinguished from above the fire disaster and is easily vaporized after being broiled by high-temperature flame, so that the fire-fighting effect is reduced, and the fire-fighting difficulty is increased; 2. the outer floating roof storage tanks are all provided with stainless steel rain baffles, fire hazards occur to the sealing rings, fire fighting foam is sprayed from the tank tops, the rain baffles prevent the fire fighting foam from entering the space below the rain baffles, and the fire hazards below the rain baffles are difficult to completely extinguish; 3. when the storage tank floating disc operates at a low liquid level, the distance between the fire-fighting foam and the floating disc sealing ring can reach more than 15 meters, the foam is easy to disperse and not concentrate in the descending process, and simultaneously contacts with a large amount of air, so that the fire-fighting foam contains a large amount of oxygen, combustion-supporting gas such as air is provided in the fire-fighting process, the fire extinguishment speed is low, the effect is poor, and the potential safety hazard is brought to the tank area.

Disclosure of Invention

An object of this application is to provide a storage tank extinguishing device and outer floating roof storage tank can put out a fire to the storage tank fast.

In order to achieve the above object, one aspect of the present application provides a fire extinguishing apparatus for a storage tank, comprising at least a tank body, a floating roof, a sealing structure and a fire extinguishing mechanism, wherein the floating roof and the sealing structure are disposed in the tank body; the sealing structure is arranged between the floating top and the inner wall of the tank body, and a vacant area is formed between the sealing mechanism and the inner wall of the tank body; when a fire breaks out in the tank body, the fire extinguishing mechanism sprays fire extinguishing medium into the vacant area.

In order to achieve the above object, the present application also provides an external floating roof tank, including the above fire extinguishing apparatus for a tank, wherein the floating roof floats in the tank body.

Therefore, according to the technical scheme provided by the application, the vacant area is formed between the sealing mechanism and the inner wall of the tank body, when a fire breaks out in the tank body, the fire extinguishing mechanism directly sprays fire extinguishing medium into the vacant area, so that the fire extinguishing is quicker, the problem that fire extinguishing foam cannot enter the sealing ring to directly extinguish the fire due to the blocking of the rain baffle plate in the existing top fire extinguishing foam fire extinguishing process is solved, and the problem that the fire extinguishing foam is dispersed and contacted with a large amount of air to reduce the fire extinguishing effect due to the fact that the fire extinguishing foam descends from a high position in a top fire extinguishing mode is solved;

simultaneously, because the fire control foam gets into from conflagration upper portion, the outer flame temperature of conflagration is high, and the vaporization is serious, and this application adopts direct injection to flame bottom, and the vaporization of fire control foam is low, and fire control effect is better.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a fire suppression apparatus for a storage tank according to an embodiment of the present disclosure;

FIG. 2 is a schematic top view of a tank fire suppression apparatus in one embodiment provided herein;

FIG. 3 is a schematic view of the construction of a defoaming collar in one embodiment provided herein;

FIG. 4 is a schematic cross-sectional view of a fire suppression apparatus for a storage tank according to another embodiment of the present disclosure;

FIG. 5 is a schematic top view of a tank fire suppression arrangement in another embodiment provided herein;

FIG. 6 is a schematic view of a portion of a fire suppression apparatus for a storage tank in accordance with another embodiment provided herein;

FIG. 7 is a schematic diagram of the overall dispenser configuration in another embodiment provided herein;

in the figure: 1. a tank body; 2. floating the top; 3. a sealing structure; 31. an edge seal; 32. a rain shield; 41. a fire fighting foam supply; 42. a pipeline conveying assembly; 421. a first tap; 422. a main pipeline; 423. a branch line; 43. a fire-fighting foam ring pipe; 44. a spray head; 45. a master distributor; 451. an inlet; 452. an outlet; 453. an electrically controlled valve; 46. switching pipelines; 47. a second tap; 5. an empty area; 6. a barrier plate.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings. Terms such as "upper," "above," "lower," "below," "first end," "second end," "one end," "another end," and the like, used herein to denote relative spatial positions, are used for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Furthermore, the terms "mounted", "disposed", "provided", "connected", "slidably connected", "fixed" and "sleeved" are to be understood in a broad sense. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The device is used for rapidly extinguishing fire and preventing fire from expanding when a sealing ring of the outer floating roof storage tank is in fire.

In the related art, the method for the floating plate fire of the external floating roof storage tank is to arrange a foam fire-fighting pipe at the top of the storage tank, and fire-fighting foam is downwards sprayed out through equipment such as a pipeline at the top when the fire occurs, so that the fire is extinguished by the floating plate sealing ring of the storage tank, and the purpose of foam fire-fighting and fire-extinguishing is achieved.

Therefore, there is a need for a fire extinguishing apparatus for storage tank and an external floating roof storage tank to solve these problems, so as to achieve the purpose of controlling the fire to expand and quickly extinguish the fire, and quickly extinguish the fire when a fire occurs, thereby ensuring the safety of the tank area and energy.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. It should be apparent that the embodiments described in this application are only some embodiments of the present application, and not all embodiments of the present application. All other embodiments, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application, are within the scope of protection of the present application.

Referring specifically to fig. 1-7, in one realizable embodiment, a storage tank fire suppression apparatus includes at least a tank body 1, a floating roof 2, a sealing structure 3, and a fire suppression mechanism, wherein the floating roof 2 and the sealing structure 3 may be disposed in the tank body 1; the sealing structure 3 is arranged between the floating top 2 and the inner wall of the tank body 1, and a vacant area 5 is formed between the sealing structure 3 and the inner wall of the tank body 1; when a fire breaks out in the tank 1, the fire extinguishing means sprays the extinguishing medium into the vacant area 5.

In the embodiment, the storage tank fire extinguishing device is not only applied to the outer floating roof storage tank, but also applied to the inner floating roof storage tank and the like; the floating roof 2 and the sealing structure 3 are used for dividing the interior of the tank body 1 into two areas, namely an oil storage area below the floating roof 2 and the sealing structure 3 and an air area above the floating roof 2 and the sealing structure 3; in order to avoid the problems encountered in the fire extinguishing mode, the fire extinguishing mechanism directly sprays fire extinguishing medium into the vacant area 5 formed by the sealing structure 3 and the tank body 1, so that the problem that fire extinguishing foam cannot enter the sealing ring to directly extinguish fire due to the blocking of the rain baffle 32 in the fire extinguishing foam fire extinguishing process of the existing top fire extinguishing mode is solved, and the problems that the fire extinguishing foam falls from a high position in the top fire extinguishing mode, so that the foam is dispersed and contacts with a large amount of air to reduce the fire extinguishing effect are solved; and, because the fire control foam gets into from conflagration upper portion, the outer flame temperature of conflagration is high, and the vaporization is serious, and this application adopts direct injection to flame bottom, and the vaporization of fire control foam is low, and fire control effect is better.

In practical application, the tank body 1 is generally cylindrical, correspondingly, the floating top part 2 is disc-shaped and is arranged in the tank body 1, and the floating top part 2 floats on the liquid storage surface of the tank body 1 under the buoyancy action of liquid in the tank body 1; the sealing structure 3 is annular and is used for sealing between the tank body 1 and the floating part 2 in contact, the floating top part 2 and the sealing structure 3 jointly form a covering layer on the liquid storage surface of the tank body 1, and the floating top part and the sealing structure float up and down along with the liquid storage amount of the liquid storage in the tank body 1, so that the liquid storage in the tank body 1 is completely separated from the atmosphere, the evaporation and the loss of the liquid storage in the storage process are reduced, and the pollution of external rainwater and air to the liquid storage is avoided; it is noted that the fire extinguishing medium sprayed by the fire extinguishing mechanism in the present application may be foam, dry powder, dry ice, etc., and is not limited to foam, but the present application is preferably foam for the fire extinguishing medium because the external floating roof storage tank is commonly used for storing crude oil.

Wherein, referring in particular to fig. 1, the sealing structure 3 may comprise a rim seal 31 and a rain shield 32; the edge seal 31 is attached to the side of the floating roof 2; one end of the rain shield 32 is connected above the edge sealing member 31, the other end of the rain shield 32 is attached to the inner wall of the tank body 1, and the rain shield 32 is used for preventing external rainwater from entering the liquid storage of the tank body 1.

Referring to fig. 1, 2 and 3 together, the fire extinguishing mechanism includes a fire-fighting foam supply device 41, a pipeline delivery assembly 42 and a fire-fighting foam loop 43, wherein the fire-fighting foam supply device 41 is communicated with the fire-fighting foam loop 43 through the pipeline delivery assembly 42, so that the fire-fighting foam generated by the fire-fighting foam supply device 41 is delivered through the pipeline delivery assembly 42 to the fire-fighting foam loop 43; a fire fighting foam collar 43 may be provided in the vacant area 5, and a plurality of nozzles 44 are provided at intervals on the fire fighting foam collar 43.

In practice, the fire fighting foam collar 43 is located in the vacant area 5, wherein the fire fighting foam collar 43 may be attached to the rain shield 32; alternatively, the fire fighting foam collar 43 may be attached to the floating roof 2; alternatively, a fire fighting foam grommet 43 may be attached to the rim seal 31. The spray head 44 can be connected to the outer side of the fire-fighting foam ring pipe 43 and is communicated with the interior of the fire-fighting foam ring pipe 43, so that foam in the fire-fighting foam ring pipe 43 can be sprayed out; also, in order to ensure the uniformity of the foam injection, the spray heads 44 may be arranged in an annular array on the fire fighting foam collar 43, with the spray heads 44 being arranged towards the contact gap between the rim seal 31 and the tank 1; meanwhile, in order to prevent the backflow at the nozzle 44, a check valve may be disposed at the nozzle 44 to prevent external impurities or other liquid from entering the fire-fighting foam ring pipe 43; in the event of a fire, the fire fighting foam supply device 41 is activated, and the generated fire fighting foam is transported through the pipe conveyor 42 to the fire fighting foam loop 43 and finally sprayed from the spray head 44 into the vacant area 5.

It should be noted that the fire fighting foam supply device 41 is common knowledge in the art and will not be described in detail herein.

In order to ensure that the foam sprayed by the spray heads 44 on the fire-fighting foam ring pipe 43 is uniform, and avoid that the foam sprayed by a single spray head is too little to influence the fire-fighting effect; referring to fig. 1 and 2 together, in one possible embodiment, pipeline transport assembly 42 includes a first tap 421, a main pipeline 422, and a plurality of branch pipelines 423; the first sub-joint 421 is arranged on the floating roof 2, and the side surface of the first sub-joint 421 is provided with a plurality of openings which are communicated with each other inside the first sub-joint 421; one end of the main pipe 422 is communicated with the fire fighting foam supply device 41, and the other end of the main pipe 422 is communicated with one of the openings, so that the fire fighting foam generated by the fire fighting foam supply device 41 is guided into the first tap 421; one end of each branch pipeline 423 is communicated with the other openings, the other end of each branch pipeline 423 is communicated with the fire-fighting foam ring pipe 43, and the branch pipelines 423 are arranged around the first branch joint 421 in an annular array.

In this embodiment, the location of the fire fighting foam supply device 41 may be provided on the tank 1, or on the floating roof 2, or in an external area without connection to the tank; the position of the main pipeline 422 can be arranged above the floating roof 2 or in the liquid storage below the floating roof 2; first tap 421 is mainly used for distributing the fire control foam that main pipeline 422 transmitted to in a plurality of lateral conduits 423 to send the fire control foam to each region in fire control foam ring canal 43 by a plurality of lateral conduits 423, thereby make the foam of every shower nozzle 44 spun on the fire control foam ring canal 43 even, avoid single department foam to lack, influence fire extinguishing effect.

Further, in order to avoid burning out of main pipe 422 and fire fighting foam supply 41 in case of fire; the application adopts the following mode, in particular, the fire-fighting foam supply device 41 is arranged outside the tank body 1; the main pipeline 422 is arranged in the tank body 1, and the main pipeline 422 is positioned below the floating roof 2; one end of the main pipe 422 is communicated with one of the openings through the floating roof 2, and the other end of the main pipe 422 is communicated with the fire fighting foam supply device 41 through the tank 1. In other words, the foam supply device 41 is arranged outside and isolated from the tank 1, so as to prevent the foam supply device from being damaged in case of fire; simultaneously, when taking place the conflagration in the jar body 1, flame upwards kicks from the stock solution face, sets up main line 422 in stock solution face below to prevent that the conflagration from taking place the ignition to main line 422.

In practical application, the main pipeline 422 can be a hose, so that the main pipeline 422 is correspondingly unfolded or bent when the floating roof 2 moves up and down, wherein the hose can be a metal armored pipe, so that the hose can adapt to medium corrosion of liquid storage for a long time; the material of the branch pipe 423 may be carbon steel or stainless steel, and the diameter of the thickness of the pipe is determined according to the pressure and flow rate of the fire fighting foam.

In order to make the fire fighting foam supply device 41 more quickly react to extinguish a fire when a fire occurs, in a realizable embodiment, the storage tank fire fighting device should also include a fire monitoring module; the fire monitoring module can be used for monitoring whether a fire disaster occurs in the tank body 1, and when the fire disaster occurs, the fire disaster area can be judged, namely, the fire disaster position is positioned.

In practical applications, the fire monitoring module includes a vision camera (not shown in the figure) and a processor; the vision camera is arranged above the tank body 1, photographs or photographs the interior of the tank body 1, so that whether dense smoke and/or flame exist or not is monitored, when dense smoke and/or flame exist, the fire is judged to be on fire, the scene is photographed and transmitted to the processor, the photographed picture is compared with a prestored picture by the processor, a fire area is determined, and meanwhile the fire-fighting foam supply device 41 is started to extinguish fire.

In the above embodiment, the fire extinguishing mechanism sprays foam to all areas in the vacant area 5 to extinguish fire, which can effectively extinguish fire, but is very large in fire-fighting foam waste, and more importantly, is inconvenient for later cleaning and maintenance; thus, the present application also provides another achievable embodiment, performing a fixed-point injection.

In another practical implementation, referring specifically to fig. 4 and 5, based on the determination principle of the fire area by the fire monitoring module, a new fire extinguishing mechanism is provided, which includes a fire fighting foam supply device 41, a distribution control mechanism and a plurality of branch pipes 423; the fire-fighting foam supply device 41 is communicated with one ends of the branch pipelines 423 through a distribution control mechanism, and the other ends of the branch pipelines 423 are positioned in the vacant area 5; the plurality of branch pipelines 423 divide the vacant area 5 into a plurality of fire extinguishing areas, and each fire extinguishing area corresponds to a certain number of branch pipelines 423; based on the fire area determined by the fire monitoring module, the distribution control means controls the fire fighting foam supply device 41 to spray fire fighting foam to the fire fighting area involved in the fire area.

That is, when a fire breaks out, the fire extinguishing area related to the fire extinguishing area is determined based on the monitored fire area, and the distribution control means distributes the fire fighting foam generated by the fire fighting foam supply device 41 into the branch pipes 423 of the fire extinguishing area related to the fire extinguishing area, so that the foam is transported to the fire extinguishing area related to the fire extinguishing area through the corresponding branch pipes 423, thereby achieving the fixed-point fire extinguishing. Meanwhile, the fire-fighting foam ring pipe 43 and the spray heads 44 thereon are saved, and the branch pipeline 423 is adopted to directly spray foam to the fire extinguishing area, and of course, in the embodiment, the spray heads 44 with one-way valves can also be installed at one end of the branch pipeline 423 located in the fire extinguishing area, so that the backflow phenomenon is prevented.

In practical applications, if the number of the branch pipes 423 is a, and the vacant area 5 needs to be divided into 3 fire extinguishing areas, a/3 of the outlet ends of the branch pipes 423 are needed to extinguish fire in each fire extinguishing area.

Further, referring to fig. 5 and 6 specifically, in order to prevent the fire-fighting foam in one of the fire extinguishing areas from spreading to the other fire extinguishing areas, a plurality of blocking plates 6 are further arranged in the vacant area 5, and two adjacent fire extinguishing areas are separated by the plurality of blocking plates 6; in use, the barrier panel 6 blocks as much as possible the propagation of fire fighting foam to the rest of the fire fighting area.

In another implementable embodiment, as shown with particular reference to fig. 4-7, there is also provided a dispensing control mechanism, in particular, comprising main conduit 422 and total dispenser 45; an inlet 451 and a plurality of outlets 452 are arranged on the side surface of the main distributor 45, the inlet 451 and the plurality of outlets 452 are communicated with each other in the main distributor 45, an electric control valve 453 is arranged at each outlet 452, and the on-off of the corresponding outlet 452 is automatically controlled by the electric control valve 453; one end of the main pipe 422 communicates with the fire fighting foam supply device 41, and the other end of the main pipe 422 communicates with the inlet 451; each outlet 452 is connected to a second tap 47 via a transfer line 46; the open hole of each second branch joint 47 is connected with one end of a branch pipeline 423, and the other end of the branch pipeline 423 communicated with the same second branch joint 47 is positioned in the same fire extinguishing area; that is, each second tap 47 controls whether a fire suppression area is to be extinguished, respectively.

In practical applications, the second sub-joint 47 has the same function and structure as the first sub-joint 421, and will not be described herein; the aperture of the inlet 451 may be larger than the aperture of the outlet 452; main pipe 422 is used to deliver the foam generated from fire fighting foam supply 41 to main distributor 45, and then electric control valve 453 in each outlet 452 controls whether outlet 452 is opened, thereby controlling second branch 47 connected to outlet 452, and branch pipe 423 connected to second branch 47, thereby controlling whether the corresponding fire fighting area is supplied with foam; in other words, each of the electrically controlled valves 453 is used to control whether to deliver foam to a corresponding fire extinguishing area, thereby extinguishing the fire extinguishing area where the fire occurs.

In addition, for the position setting of the fire fighting foam supply device 41 and the main pipeline 422, the setting manner in the previous embodiment can be referred to, and the description thereof is omitted.

In another practical implementation mode, another practical implementation mode is provided for the fire monitoring module, and a specific fire monitoring module comprises a plurality of smoke sensors; the smoke sensors are respectively arranged in the fire extinguishing areas. That is, one smoke sensor is provided in each fire extinguishing area, and whether a fire breaks out in the area is detected by the smoke sensor, so that the foam generated by the fire fighting foam supply device 41 is delivered into the corresponding fire extinguishing area by the distribution control mechanism.

Based on the same inventive concept, the application also provides an external floating roof storage tank, which comprises the storage tank fire extinguishing device, wherein the floating roof 2 floats in the tank body 1, and the storage tank fire extinguishing device is used for extinguishing fire of the external floating roof storage tank.

Simultaneously, adopt first tap to distribute the fire control foam that the main line transmitted to come to a plurality of branch pipelines in to convey the fire control foam to each region in the fire control foam ring pipe by a plurality of branch pipelines, thereby make every shower nozzle spun foam on the fire control foam ring pipe even, avoid single department foam to lack, influence fire control effect.

Meanwhile, the main pipeline is arranged in the liquid storage tank of the tank body, so that the burning loss of the main pipeline in a fire disaster is avoided, the replacement times of the main pipeline are reduced, and the maintenance cost is reduced.

Simultaneously, storage tank extinguishing device still adopts conflagration monitoring module, and conflagration monitoring module can be used for monitoring jar internal whether the conflagration breaks out, when the conflagration breaks out, makes the more quick reaction of putting out a fire of fire control foam feeding mechanism, improves fire control effect.

Meanwhile, a fire monitoring module is adopted to judge a fire area and is matched with a distribution control mechanism for use; according to the fire area of monitoring to confirm the regional fire extinguishing area that relates of fire, distribution control mechanism distributes the produced fire control foam of fire control foam feeding mechanism to the regional branch pipeline of putting out a fire that relates to the foam passes through the corresponding branch pipeline and transmits to the regional fire extinguishing area that relates, and then realizes the fixed point and put out a fire, saves the fire control foam, realizes accurate putting out a fire.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fire extinguishing device for a storage tank is characterized by at least comprising a tank body, a floating top, a sealing structure and a fire extinguishing mechanism, wherein the floating top and the sealing structure are arranged in the tank body;

the sealing structure is arranged between the floating top and the inner wall of the tank body, and a vacant area is formed between the sealing mechanism and the inner wall of the tank body;

when a fire breaks out in the tank body, the fire extinguishing mechanism sprays fire extinguishing medium into the vacant area.

2. The storage tank fire suppression apparatus of claim 1, further comprising a fire monitoring module;

the fire monitoring module is used for monitoring whether a fire disaster occurs in the tank body or not and judging a fire disaster area.

3. The storage tank fire suppression apparatus of claim 1 or 2, wherein the fire suppression mechanism comprises a fire fighting foam supply, a piping transport assembly, and a fire fighting foam collar, wherein the fire fighting foam supply is in communication with the fire fighting foam collar through the piping transport assembly;

the fire-fighting foam ring pipe is arranged in the vacant area, and a plurality of nozzles are arranged at intervals on the fire-fighting foam ring pipe.

4. The storage tank fire suppression apparatus of claim 3, wherein the conduit transfer assembly comprises a first tap, a main conduit, and a plurality of branch conduits;

the first sub-joint is arranged on the floating top, a plurality of openings are formed in the side face of the first sub-joint, and the openings are communicated with each other in the first sub-joint;

one end of the main pipeline is communicated with the fire-fighting foam supply device, and the other end of the main pipeline is communicated with one of the open holes;

one end of each branch pipeline is communicated with the other openings, the other end of each branch pipeline is communicated with the fire-fighting foam ring pipe, and the branch pipelines are arranged around the first adapter in an annular array.

5. The tank fire suppression apparatus of claim 4, wherein the fire fighting foam supply is disposed outside the tank;

the main pipeline is arranged in the tank body and is positioned below the floating top;

one end of the main pipeline penetrates through the floating top to be communicated with one opening, and the other end of the main pipeline penetrates through the tank body to be communicated with the fire-fighting foam supply device.

6. The tank fire suppression apparatus of claim 2, wherein the fire suppression means comprises a fire fighting foam supply means, a distribution control means, and a plurality of branch lines;

the fire-fighting foam supply device is communicated with one ends of the branch pipelines through the distribution control mechanism, and the other ends of the branch pipelines are positioned in the vacant area;

the branch pipelines divide the vacant area into a plurality of fire extinguishing areas;

based on the fire area determined by the fire monitoring module, the distribution control mechanism controls the fire fighting foam supply device to spray fire fighting foam to the fire fighting area involved in the fire area.

7. The tank fire suppression apparatus of claim 6, wherein a plurality of baffle plates are disposed within the vacant area;

the barrier plate separates two adjacent fire extinguishing areas.

8. The storage tank fire suppression apparatus of claim 7, wherein the distribution control mechanism comprises a main pipeline and a main distributor;

the side surface of the main distributor is provided with an inlet and a plurality of outlets, the inlet and the outlets are mutually communicated in the main distributor, and each outlet is provided with an electric control valve;

one end of the main pipeline is communicated with the fire-fighting foam supply device, and the other end of the main pipeline is communicated with the inlet;

each outlet is connected with a second branch joint through a switching pipeline;

the opening of each second branch joint is connected with one end of a branch pipeline, and the other end of the branch pipeline communicated with the same second branch joint is located in the same fire extinguishing area.

9. The tank fire suppression apparatus of claim 8, wherein the fire monitoring module comprises a plurality of smoke sensors;

the smoke sensors are respectively arranged in the fire extinguishing areas.

10. The tank fire suppression apparatus of claim 2, wherein the fire monitoring module comprises a visual camera;

the visual inspection camera is arranged above the tank body.

11. The storage tank fire suppression apparatus of claim 1, wherein the sealing structure comprises a rim seal and a weather shield;

the edge sealing piece is connected to the side surface of the floating top part;

one end of the rain baffle is connected above the edge sealing element, and the other end of the rain baffle is attached to the inner wall of the tank body.

12. An outer floating roof storage tank which is characterized in that: a tank fire suppression apparatus including the tank of any one of claims 1 to 11, the float top floating within the tank body.