CN116889696A - High-pressure carbon dioxide fire extinguishing system, operation method thereof and ship - Google Patents

Abstract

The invention discloses a high-pressure carbon dioxide fire extinguishing system, an operation method thereof and a ship, and belongs to the technical field of ships. The high-pressure carbon dioxide fire extinguishing system comprises a pipeline, a first nozzle, a second nozzle, a gas cylinder group, a regional valve group, a gas cylinder releasing station, a valve box releasing assembly, a monitoring system and an alarm system, wherein the first nozzle and the second nozzle are connected with the pipeline; the release valve box assembly comprises a manual release valve and a manual control valve which are arranged in the box body, the manual release valve is used for opening the corresponding area valve, the manual control valve is used for opening the bottle head valve, and the carbon dioxide fire extinguishing agent with corresponding strength can be sprayed according to the actual fire extinguishing area, so that effective fire extinguishing is ensured, and the carbon dioxide consumption is not wasted.

Description

High-pressure carbon dioxide fire extinguishing system, operation method thereof and ship

Technical Field

The invention relates to the technical field of ships, in particular to a high-pressure carbon dioxide fire extinguishing system, an operation method thereof and a ship.

Background

Carbon dioxide is liquefied under high pressure, is canned and stored, and rapidly expands in volume and absorbs a large amount of heat during spraying, so that the temperature of a fire scene can be reduced, and meanwhile, the oxygen concentration of a protected space is diluted to achieve the effect of asphyxiation and extinguishment. Carbon dioxide is an inert gas, has low price, does not pollute the fire scene environment when in fire extinguishment, and can quickly dissipate and leave no trace after fire extinguishment, so that the carbon dioxide is widely applied to ships.

In the prior art, the carbon dioxide automatic fire extinguishing system is divided into a total submerged fire extinguishing system mode and a local application fire extinguishing system mode according to the design and application form. The total submerged fire extinguishing system means a fire extinguishing system which sprays fire extinguishing agent with a certain concentration into a protection area within a certain period of time and enables the protection area to be uniformly filled with fire extinguishing agent. The fire disaster protection is carried out by adopting a total submerged fire extinguishing system mode for the closed protection area where the fire disaster generation part cannot be predicted in advance. The local application fire extinguishing system mode directly sprays fire extinguishing agent to the protection object with designed spraying intensity and the fire extinguishing mode lasts for a certain time. The local place without enclosed enclosure where the fire disaster can be expected in advance is protected by adopting a local application fire extinguishing system mode. However, none of the above fire extinguishing systems can open the corresponding spray intensity of carbon dioxide fire extinguishing agent according to the actual fire extinguishing area, resulting in insufficient fire extinguishing intensity or wasted carbon dioxide usage.

Disclosure of Invention

The invention aims to provide a high-pressure carbon dioxide fire extinguishing system, an operation method thereof and a ship, which can spray carbon dioxide fire extinguishing agent with corresponding strength according to an actual fire extinguishing area, achieve a certain discharge vector, ensure effective fire extinguishing and do not waste carbon dioxide consumption.

To achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, a high pressure carbon dioxide fire suppression system is provided, comprising a pipe to which is connected:

a first nozzle and a second nozzle;

the gas cylinder group comprises a plurality of high-pressure carbon dioxide gas cylinders;

the regional valve group comprises a first regional valve and a second regional valve, when the first regional valve is opened and the head valve of the high-pressure carbon dioxide gas cylinder is opened, the first regional can be extinguished through the first nozzle, and when the second regional valve is opened and the head valve of the high-pressure carbon dioxide gas cylinder is opened, the second regional can be extinguished through the second nozzle;

a releasing gas cylinder station comprising a first nitrogen cylinder and a second nitrogen cylinder;

the release valve box assembly comprises a first manual release valve, a first manual control valve, a second manual release valve and a second manual control valve which are arranged in the box body; when the first nitrogen cylinder is opened, the first area valve can be opened through the opened first manual release valve, and the second area valve can be opened through the opened second manual release valve; when the second nitrogen gas cylinder is opened, a first preset number of high-pressure carbon dioxide gas cylinders can be opened through the opened first manual control valve, and a second preset number of high-pressure carbon dioxide gas cylinders can be opened through the opened second manual control valve;

the monitoring system is respectively in communication connection with the alarm system, the gas releasing cylinder station, the gas releasing valve box assembly, the cylinder head valve and the regional valve group, and when a fire disaster occurs, the alarm system can send out corresponding alarm signals and open the first nitrogen cylinder and the second nitrogen cylinder.

In some possible embodiments, the gas cylinder release station further includes a time delay gas cylinder, the first nitrogen gas cylinder is in communication connection with the monitoring system, the time delay gas cylinder is connected between the first nitrogen gas cylinder and the second nitrogen gas cylinder, the time delay gas cylinder can be automatically opened after the first nitrogen gas cylinder is opened, and the time delay gas cylinder can be automatically inflated for the second nitrogen gas cylinder to open the second nitrogen gas cylinder.

In some possible embodiments, the time delay gas cylinder is capable of being delayed for a time in the range of 20 seconds to 40 seconds.

In some possible embodiments, the release valve housing assembly includes a first housing and a second housing, the first manual release valve and the first manual control valve are both disposed within the first housing, and the second manual release valve and the second manual control valve are both disposed within the second housing.

In some possible embodiments, a plurality of second manual control valves are provided in the second tank, and each of the plurality of second manual control valves is capable of opening a corresponding number of high-pressure carbon dioxide cylinders.

In some possible embodiments, the alarm system is capable of emitting a lamppost alarm signal and a light alarm signal, one of the first area and the second area emitting a lamppost alarm signal when a fire occurs and the other emitting a light alarm signal when a fire occurs.

In a second aspect, there is provided a method of operating a high pressure carbon dioxide fire suppression system as described above, comprising:

s100, when a fire disaster occurs in a first area, the monitoring system controls the alarm system to send an alarm signal to prompt the fire disaster occurs in the first area, and the monitoring system controls the first nitrogen cylinder and the second nitrogen cylinder to be opened;

s200, manually operating to open a first manual release valve and keep a second manual release valve closed, wherein the first nitrogen cylinder is ventilated through the first manual release valve to open a first area valve; according to the fire situation, the first manual control valve or the second manual control valve is manually operated to open the corresponding number of high-pressure carbon dioxide gas cylinders to extinguish the fire in the first area.

In some possible embodiments, at step S200, it includes:

s210, manually operating to open a first manual release valve and keep a second manual release valve closed, wherein the first nitrogen cylinder is ventilated through the first manual release valve to open a first area valve;

and S220, according to the fire situation, manually operating to open the first manual control valve or the second manual control valve to open the high-pressure carbon dioxide gas cylinders with corresponding quantity to extinguish the fire in the first area.

In some possible embodiments, between step S100 and step S200 further comprises:

s110, confirming that all people in the first area are evacuated;

s120, closing all doors and windows and channels, and closing a fan and an oil pump.

In a third aspect there is provided a vessel comprising a first region, a second region and a high pressure carbon dioxide fire suppression system as described above, one of the first region and the second region being a nacelle and the other being a cargo hold.

The invention has the beneficial effects that:

according to the high-pressure carbon dioxide fire extinguishing system, the operation method thereof and the ship, the monitoring system is used for monitoring the occurrence of fire, and the alarm system is used for sending out corresponding alarm signals to prompt the fire in the corresponding area. Fire extinguishing is performed on the corresponding zone by opening the first manual release valve or the second manual release valve to correspondingly open the first zone valve and the second zone valve. The fire is extinguished by opening the first manual control valve or the second manual control valve to open a corresponding number of high pressure carbon dioxide cylinders, i.e. by spraying carbon dioxide in a corresponding number of carbon dioxide cylinders. Specifically, the gas cylinder group is provided with a plurality of high-pressure carbon dioxide gas cylinders filled with carbon dioxide. The release amount of carbon dioxide in the high-pressure carbon dioxide cylinder is a fixed value, the release amount of carbon dioxide required for fire extinguishment is calculated according to the volumes of the first area and the second area, the specific calculation method is only needed by referring to the prior art, and the specific calculation method is not repeated, and then the first preset amount and the second preset amount are obtained according to the release amount. Thereby realizing corresponding fire extinguishing measures of the high-pressure carbon dioxide fire extinguishing system according to the actual fire extinguishing area, achieving some fire extinguishing, ensuring effective fire extinguishing and not wasting the carbon dioxide consumption.

Drawings

FIG. 1 is a schematic diagram of the operation of a high pressure carbon dioxide fire suppression system provided in accordance with an embodiment of the present invention;

FIG. 2 is a layout of a high pressure carbon dioxide fire suppression system provided in an embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

fig. 4 is a flow chart of a method of operating a high pressure carbon dioxide fire suppression system provided in accordance with an embodiment of the present invention.

In the figure:

1. a gas cylinder group; 11. a high pressure carbon dioxide cylinder; 12. a bottle valve; 13. a one-way valve;

2. a regional valve bank; 21. a first zone valve; 22. a second zone valve; 23. a third zone valve;

3. releasing the gas cylinder station; 31. a first nitrogen cylinder; 32. a second nitrogen cylinder; 33. a time delay gas cylinder;

4. releasing the valve box assembly; 41. a first manual release valve; 42. a first manual control valve; 43. a second manual release valve; 44. a second manual control valve; 45. a third manual release valve; 46. a third manual control valve; 47. a first case; 48. a second case; 49. a third case;

5. an alarm system; 6. an alarm box; 7. a pipe;

100. a first region; 200. a second region; 300. and a third region.

Detailed Description

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The embodiment provides a high-pressure carbon dioxide fire extinguishing system, which is shown in fig. 1-3, and comprises a pipeline 7, wherein a first nozzle, a second nozzle, a gas cylinder group 1, a regional valve group 2, a gas cylinder releasing station 3, a valve box releasing assembly 4, a monitoring system and an alarm system 5 are connected to the pipeline 7. Wherein the gas cylinder group 1 comprises a plurality of high-pressure carbon dioxide gas cylinders 11; the zone valve group 2 includes a first zone valve 21 and a second zone valve 22, and can extinguish fire in the first zone 100 through the first nozzle when the first zone valve 21 is opened and the head valve 12 of the high-pressure carbon dioxide gas cylinder 11 is opened, and can extinguish fire in the second zone 200 through the second nozzle when the second zone valve 22 is opened and the head valve 12 of the high-pressure carbon dioxide gas cylinder 11 is opened; the releasing gas cylinder station 3 includes a first nitrogen gas cylinder 31 and a second nitrogen gas cylinder 32; the relief valve housing assembly 4 includes a first manual relief valve 41, a first manual control valve 42, a second manual relief valve 43, and a second manual control valve 44 provided in the housing; when the first nitrogen gas cylinder 31 is opened, the first area valve 21 can be opened by the opened first manual release valve 41, and the second area valve 22 can be opened by the opened second manual release valve 43; when the second nitrogen gas cylinder 32 is opened, the first preset number of high-pressure carbon dioxide gas cylinders 11 can be opened by the opened first manual control valve 42, and the second preset number of high-pressure carbon dioxide gas cylinders 11 can be opened by the opened second manual control valve 44; the monitoring system is respectively in communication connection with the alarm system 5, the gas releasing cylinder station 3, the releasing valve box assembly 4, the cylinder head valve 12 and the regional valve group 2, and when a fire disaster occurs, the alarm system 5 can send out corresponding alarm signals and open the first nitrogen cylinder 31 and the second nitrogen cylinder 32.

The principle of the high-pressure carbon dioxide fire extinguishing system is that oxygen in air is expelled by utilizing the characteristics of high density and no combustion supporting of carbon dioxide gas, and the function of isolating the air is started, so that the fire extinguishing is realized.

When the monitoring system monitors the first area 100 for fire, the alarm system 5 issues a first alarm signal and opens the first nitrogen gas cylinder 31 and the second nitrogen gas cylinder 32. The first manual release valve 41 and the first area valve 21 are connected in series to the same pipe 7, the first manual release valve 41 is opened manually, and the first nitrogen gas cylinder 31 is inflated into the pipe 7 to open the first area valve 21. The first manual control valve 42 (or the second manual control valve 44) is manually opened, and the second nitrogen gas cylinder 32 is inflated into the pipeline 7 to open the first preset number of high-pressure carbon dioxide gas cylinders 11, so that carbon dioxide in the carbon dioxide gas cylinders is sprayed to the first area 100 through the first nozzle to extinguish the fire.

Similarly, when the monitoring system monitors the second area 200 for a fire, the alarm system 5 sends out a second alarm signal and opens the first nitrogen gas cylinder 31 and the second nitrogen gas cylinder 32. The second manual release valve 43 and the second area valve 22 are connected in series to the same pipe 7, the second manual release valve 43 is opened manually, and the second nitrogen gas bottle 32 is inflated into the pipe 7 to open the second area valve 22. The second manual control valve 44 (which may be the first manual control valve 42) is manually opened and the second nitrogen gas cylinder 32 is inflated into the pipeline 7 to open the second preset number of high pressure carbon dioxide gas cylinders 11 so that carbon dioxide in the carbon dioxide gas cylinders is sprayed through the second nozzle to the second area 200 for fire extinguishment.

The fire is monitored by the monitoring system, and the alarm system 5 sends out a corresponding alarm signal to prompt the fire in the corresponding area. The fire is extinguished in the corresponding zone by opening the first manual release valve 41 or the second manual release valve 43 to correspondingly open the first zone valve 21 and the second zone valve 22. By opening the first manual control valve 42 or the second manual control valve 44 to open the corresponding number of high-pressure carbon dioxide cylinders 11, that is, the carbon dioxide in the corresponding number of carbon dioxide cylinders is used for fire-extinguishing by spraying. Specifically, the cylinder group 1 is provided with a plurality of high-pressure carbon dioxide cylinders 11 filled with carbon dioxide. The release amount of carbon dioxide in the high-pressure carbon dioxide cylinder 11 is a fixed value, the release amount of carbon dioxide required for fire extinguishment is calculated according to the volumes of the first area 100 and the second area 200, the specific calculation method is only needed by referring to the prior art, and the detailed description is omitted, and the first preset amount and the second preset amount are obtained according to the release amount. Thereby realizing corresponding fire extinguishing measures of the high-pressure carbon dioxide fire extinguishing system according to the actual fire extinguishing area, achieving some fire extinguishing, ensuring effective fire extinguishing and not wasting the carbon dioxide consumption.

The regional valve can be opened remotely through the first nitrogen cylinder 31, danger is kept away from, and the corresponding quantity of high-pressure carbon dioxide gas cylinders 11 are opened remotely through the second nitrogen cylinder 32, so that the plurality of high-pressure carbon dioxide gas cylinders 11 are prevented from being opened one by one, time is saved, and operation is convenient.

In one embodiment, the gas cylinder group 1 includes a gas cylinder connection main pipeline and a plurality of gas cylinder connection branch pipelines, a plurality of high-pressure carbon dioxide gas cylinders 11 are connected in series through the gas cylinder connection main pipeline, a one-way valve 13 is arranged on the gas cylinder connection pipeline, the gas cylinder connection branch pipeline is communicated with the gas cylinder connection main pipeline, a gas cylinder head valve 12 is connected on the gas cylinder connection branch pipeline, a first gas cylinder head valve 12 is opened to correspondingly open the high-pressure carbon dioxide gas cylinders 11 with a first preset quantity, a second gas cylinder head valve 12 is opened to correspondingly open the high-pressure carbon dioxide gas cylinders 11 with a second preset quantity, and a third gas cylinder head valve 12 is opened to correspondingly open the high-pressure carbon dioxide gas cylinders 11 with a third preset quantity, which is not repeated.

The first manual control valve 42 and the first bottle head valve 12 are connected to the same pipeline 7, the first manual control valve 42 is opened, and the second nitrogen bottle 32 is inflated into the pipeline 7 so as to open the first bottle head valve 12, namely, the first preset number of high-pressure carbon dioxide cylinders 11 can be correspondingly opened by opening the first manual control valve 42. Similarly, the second manual control valve 44 and the second bottle head valve 12 are connected to the same pipeline 7, the second manual control valve 44 is opened, and the second nitrogen bottle 32 is inflated into the pipeline 7 so as to open the second bottle head valve 12, namely, the opening of the second manual control valve 44 can correspondingly open the high-pressure carbon dioxide bottle 11 with a second preset quantity is realized.

Further, the pipeline 7 where the first manual release valve 41 and the pipeline 7 where the second manual release valve 43 of the gas cylinder releasing station 3 are located are both connected in parallel to the outlet end of the first nitrogen gas cylinder 31, and the pipeline 7 where the first manual control valve 42 and the pipeline 7 where the second manual control valve 44 are located are both connected in parallel to the outlet end of the second nitrogen gas cylinder 32.

Further, a spare release valve box assembly 4 and a release gas cylinder station 3 are further arranged, and the structure, the working principle, the working process and the like of the release valve box assembly 4 and the release gas cylinder station 3 are completely the same, so that the reliability of opening the area valve and the carbon dioxide gas cylinder is improved.

The high-pressure carbon dioxide fire extinguishing system has high release speed of carbon dioxide and irreversible release, so the safety of a release area is particularly important, and people are required to be evacuated safely. In one embodiment, the releasing gas cylinder station 3 further includes a time delay gas cylinder 33, the first nitrogen gas cylinder 31 is in communication connection with the monitoring system, the time delay gas cylinder 33 is connected between the first nitrogen gas cylinder 31 and the second nitrogen gas cylinder 32, the time delay gas cylinder 33 can be automatically opened after the first nitrogen gas cylinder 31 is opened, and the time delay gas cylinder 33 can automatically charge the second nitrogen gas cylinder 32 to open the second nitrogen gas cylinder 32. The automatic opening of the second nitrogen cylinder 32 after the preset time is realized, the control is convenient, the corresponding time is reserved for personnel to evacuate, and the safety and the reliability are ensured. Optionally, the time delay of the time delay gas cylinder 33 can be in a range of 20 seconds to 40 seconds, specifically, 20 seconds, 30 seconds, 40 seconds, etc., so that the situation that the personnel cannot be completely evacuated due to too short time is avoided, and the situation that the fire extinguishing time is delayed due to too long time is avoided. Of course, when the area is too large, the time can be correspondingly prolonged, and when the area is smaller, the time can be correspondingly shortened.

The release valve housing assembly 4 includes a first housing 47 and a second housing 48, with the first manual release valve 41 and the first manual control valve 42 both disposed within the first housing 47 and the second manual release valve 43 and the second manual control valve 44 both disposed within the second housing 48. According to the calculation in advance, when the first area 100 is in fire extinguishing, the first manual control valve 42 needs to be opened, and when the second area 200 is in fire extinguishing, the second manual valve needs to be opened, and the number of the high-pressure carbon dioxide gas cylinders 11 needs to be opened in the corresponding area is constant. By providing the first case 47 and the second case 48, the first manual release valve 41 and the first manual control valve 42 are ensured to be located in the same case, and as long as the first region 100 is in fire, only the first case 47, the first manual release valve 41 and the first manual control valve 42 are opened, and as long as the second region 200 is in fire, only the second case 48, the second manual control valve 44 and the second manual release valve 43 are opened, thereby avoiding confusion and ensuring operational convenience and reliability.

Further, the second box 48 is provided with a plurality of second manual control valves 44, and the plurality of second manual control valves 44 can respectively open a corresponding number of high-pressure carbon dioxide gas cylinders 11, and specifically, the corresponding second manual control valves 44 can be selected according to the fire disaster size of the second area 200 to open a corresponding number of high-pressure carbon dioxide gas cylinders 11. Similarly, a plurality of first manual control valves 42 may be provided, and the plurality of first manual control valves 42 may be capable of opening a corresponding number of high-pressure carbon dioxide cylinders 11, respectively, and specifically, the corresponding first manual control valves 42 may be selected to open a corresponding number of high-pressure carbon dioxide cylinders 11 according to the fire disaster size of the first area 100.

When the plurality of second manual control valves 44 are provided, nameplates are provided on the plurality of second manual control valves 44, respectively, to identify the number of openable high-pressure carbon dioxide cylinders 11, thereby preventing erroneous operation due to confusion. Similarly, when the plurality of first manual control valves 42 are provided, the plurality of first manual control valves 42 are provided with nameplates, respectively, so that the number of the opened high-pressure carbon dioxide cylinders 11 can be identified, and the wrong operation due to confusion can be prevented.

The alarm system 5 is capable of emitting a lamppost alarm signal and a light alarm signal when one of the first area 100 and the second area 200 is in fire and the other is in light.

The embodiment also provides a ship, which comprises a first area 100, a second area 200 and a high-pressure carbon dioxide fire extinguishing system, wherein one of the first area 100 and the second area 200 is a cabin, the other is a cargo hold, and the ship can extinguish fire accurately to the cabin and the cargo hold and is convenient to operate. Further, the cargo tank is divided into an upper platform and a lower platform, the ship further comprises a third area 300, the first area 100 is illustratively the upper platform, the second area 200 is the lower platform, the third area 300 is the cabin, and accordingly, the high-pressure carbon dioxide fire-extinguishing system further comprises a third nozzle, a third area valve 23, a third manual release valve 45 and a third manual control valve 46, the third area valve 23 is opened in the same way as the first area valve 21 and the second area valve 22, the third manual release valve 45 is opened in the same way as the first manual release valve 41 and the second manual release valve 43, and the third manual control valve 46 is opened in the same way as the first manual control valve 42 and the second manual control valve 44. The fire extinguishing operation principle of the third area 300 is the same as that of the first area 100 and the second area 200, and when the third area valve 23 is opened and the high-pressure carbon dioxide bottle head valve 12 is opened, the third area 300 can be extinguished by the third nozzle.

Alternatively, a plurality of spaces are arranged on the ship, such as a first space for placing the gas cylinder group 1, a second space for placing the release valve box assembly 4 and the release gas cylinder station 3, and a third space for placing the release valve box assembly 4 and the release gas cylinder station 3 ready for use.

The first space and the second space on the ship also comprise an alarm box 6, when the alarm system 5 sends out an alarm signal, the box body of the release valve box assembly 4 needs to be opened so as to be convenient for subsequently opening the high-pressure carbon dioxide gas cylinder 11, and when the box body is opened, the alarm box 6 alarms to remind people in different spaces of fire disaster, and evacuation sites are carried out.

The embodiment also provides an operation method of the high-pressure carbon dioxide fire extinguishing system, as shown in fig. 4, including:

s100, when a fire disaster occurs in the first area 100, the monitoring system controls the alarm system 5 to send out an alarm signal to prompt the fire disaster to occur in the first area 100, and controls the first nitrogen cylinder 31 and the second nitrogen cylinder 32 to be opened;

s200, the first manual release valve 41 is opened by manual operation, the second manual release valve 43 is kept closed, and the first nitrogen cylinder 31 is ventilated through the first manual release valve 41 to open the first area valve 21; depending on the fire situation, manual operation opens either the first manual control valve 42 or the second manual control valve 44 to open a corresponding number of high pressure carbon dioxide cylinders 11 to extinguish the fire in the first area 100.

The monitoring system can control the alarm system 5, and the first nitrogen cylinder 31 and the second nitrogen cylinder 32 are opened, and the alarm system 5 can prompt manual operation of corresponding manual release valves and manual control valves. The fire extinguishing function of the high-pressure carbon dioxide fire extinguishing system is realized through reasonable operation of the gas cylinder group 1, the manual release valve, the manual control valve and the like. The method is reasonable, safe, reliable, quick and convenient, and realizes the normal fire extinguishing function of the high-pressure carbon dioxide fire extinguishing system through various measures such as automation, manual operation and the like.

At step S200, it includes:

s210, the first manual release valve 41 is opened by manual operation, the second manual release valve 43 is kept closed, and the first nitrogen cylinder 31 is ventilated through the first manual release valve 41 to open the first area valve 21;

s220, according to the fire situation, the first manual control valve 42 or the second manual control valve 44 is manually operated to open the corresponding number of high-pressure carbon dioxide cylinders 11 to extinguish the fire in the first area 100.

The sequence of opening the valves is that the regional valve is opened firstly and then the bottle head valve 12 is opened, so that smoothness in release can be kept, and release blockage is avoided.

Further included between step S100 and step S200 is:

s110, confirming that all people in the first area 100 are evacuated;

s120, closing all doors and windows and channels, and closing a fan and an oil pump.

It is worth noting that carbon dioxide has choking effect on human body, and the high-pressure carbon dioxide fire extinguishing system is dangerous, and the system can only be used in unmanned places, for example, when the system is installed and used in places where people often work, proper protective measures are adopted to ensure the safety of personnel. The operation time is necessary to ensure the safety evacuation of personnel, and the ventilation outlet, the oil pump equipment and the like are closed after the evacuation, so that the aim of closed fire extinguishment is fulfilled. The safety evacuation can be realized by the alarm system 5, then the closed fire extinguishing can be performed by cutting off the air oil, and the fire extinguishing function of the high-pressure carbon dioxide fire extinguishing system can be realized by the reasonable operation sequence of the gas cylinder group 1, the release box and the like.

When the high-pressure carbon dioxide fire extinguishing system is used for a ship, when the fire disaster of the engine room is confirmed, the operation flow is as follows:

first, breaking the key box cover to take out the key of the third box 49 of the release valve box assembly 4;

and in the second step, the third box body 49 is opened, and the alarm box 6 automatically sends out a pre-alarm signal, a cabin lamp post alarm signal and an air-oil cut-off reminding signal when the third box body 49 is opened.

And thirdly, confirming that all people in the fire area are evacuated.

And fourthly, closing all outlet doors, windows and channels at the fire disaster place, and closing corresponding fans and oil pumps.

And fifth, opening the box of the gas cylinder releasing station 3, and then sequentially opening the first nitrogen cylinder 31, the delayed gas cylinder and the second nitrogen cylinder 32.

A sixth step of sequentially opening the third manual release valve 45 and the third manual control valve 46.

The seventh step, the high-pressure carbon dioxide gas cylinder 11 automatically starts to release carbon dioxide gas after about 20-40 seconds.

When the fire disaster of the upper platform of the cargo hold is confirmed, the operation flow is as follows:

first, breaking the key box cover to take out the key of the first box 47 of the release valve box assembly 4;

and in the second step, the third box body 49 is opened, and the alarm box 6 automatically sends out a pre-alarm signal, an audible and visual alarm and an air-oil cut-off signal when the third box body 49 is opened, so that the fan pipeline at the corresponding position is automatically cut off.

And thirdly, confirming that all people in the fire area are evacuated.

And fourthly, closing all exit doors, windows and channels at the fire disaster place.

And fifthly, opening each nitrogen cylinder of the release cylinder station 3.

A sixth step of sequentially opening the first manual release valve 41 and the first manual control valve 42.

The seventh step, the high-pressure carbon dioxide gas cylinder 11 automatically starts to release carbon dioxide gas after about 20-40 seconds.

Further, a plurality of first manual control valves 42 may be provided, and the corresponding first manual control valves 42 (to control the opening of the carbon dioxide bottle head valve 12) may be selectively opened according to the amount of carbon dioxide currently required to be released, which is determined according to the fire situation and the loading situation. In order to prevent misoperation, a nameplate is arranged on the ball valve.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (10)

1. A high pressure carbon dioxide fire extinguishing system, characterized by comprising a pipeline (7), wherein the pipeline (7) is connected with:

a first nozzle and a second nozzle;

a gas cylinder group (1) comprising a plurality of high-pressure carbon dioxide gas cylinders (11);

the regional valve group (2) comprises a first regional valve (21) and a second regional valve (22), when the first regional valve (21) is opened and a bottle head valve (12) of the high-pressure carbon dioxide gas bottle (11) is opened, the first regional (100) can be extinguished through the first nozzle, and when the second regional valve (22) is opened and the bottle head valve (12) of the high-pressure carbon dioxide gas bottle (11) is opened, the second regional (200) can be extinguished through the second nozzle;

a releasing gas cylinder station (3) comprising a first nitrogen cylinder (31) and a second nitrogen cylinder (32);

a release valve housing assembly (4) comprising a first manual release valve (41), a first manual control valve (42), a second manual release valve (43) and a second manual control valve (44) disposed in the housing; when the first nitrogen cylinder (31) is opened, the first area valve (21) can be opened by the opened first manual release valve (41), and the second area valve (22) can be opened by the opened second manual release valve (43); when the second nitrogen cylinders (32) are opened, a first preset number of the high-pressure carbon dioxide cylinders (11) can be opened through the opened first manual control valves (42), and a second preset number of the high-pressure carbon dioxide cylinders (11) can be opened through the opened second manual control valves (44);

the monitoring system is respectively in communication connection with the alarm system (5), the gas releasing cylinder station (3), the gas releasing valve box assembly (4), the cylinder head valve (12) and the regional valve group (2), and when a fire disaster occurs, the alarm system (5) can send out corresponding alarm signals and open the first nitrogen cylinder (31) and the second nitrogen cylinder (32).

2. The high-pressure carbon dioxide fire extinguishing system according to claim 1, wherein the release gas cylinder station (3) further comprises a time-delay gas cylinder (33), the first nitrogen gas cylinder (31) is in communication connection with the monitoring system, the time-delay gas cylinder (33) is connected between the first nitrogen gas cylinder (31) and the second nitrogen gas cylinder (32), the time-delay gas cylinder (33) can be automatically opened after the first nitrogen gas cylinder (31) is opened, and the time-delay gas cylinder (33) can automatically charge the second nitrogen gas cylinder (32) to open the second nitrogen gas cylinder (32).

3. A high pressure carbon dioxide fire suppression system according to claim 2, characterized in that the time delay cylinder (33) is capable of being delayed for a time in the range of 20 seconds to 40 seconds.

4. The high pressure carbon dioxide fire suppression system according to claim 1, wherein the relief valve box assembly (4) comprises a first box (47) and a second box (48), the first manual relief valve (41) and the first manual control valve (42) are both disposed within the first box (47), and the second manual relief valve (43) and the second manual control valve (44) are both disposed within the second box (48).

5. The high-pressure carbon dioxide fire extinguishing system according to claim 4, wherein a plurality of second manual control valves (44) are provided in the second tank (48), and the plurality of second manual control valves (44) are each capable of opening a corresponding number of high-pressure carbon dioxide cylinders (11).

6. The high pressure carbon dioxide fire suppression system according to any one of claims 1-5, wherein the alarm system (5) is capable of emitting a lamppost alarm signal and a light alarm signal, one of the first zone (100) and the second zone (200) emitting a lamppost alarm signal when a fire occurs and the other emitting a light alarm signal when a fire occurs.

7. A method of operating the high pressure carbon dioxide fire suppression system of any one of claims 1-6, comprising:

s100, when a fire disaster occurs in a first area (100), a monitoring system controls an alarm system (5) to send out an alarm signal to prompt the fire disaster to occur in the first area (100), and the monitoring system controls a first nitrogen cylinder (31) and a second nitrogen cylinder (32) to be opened;

s200, manually operating to open the first manual release valve (41) and keep the second manual release valve (43) closed, wherein the first nitrogen cylinder (31) is ventilated through the first manual release valve (41) to open the first area valve (21); according to a fire situation, the first manual control valve (42) or the second manual control valve (44) is manually operated to open a corresponding number of high-pressure carbon dioxide gas cylinders (11) to extinguish the fire in the first area (100).

8. The method of operating a high pressure carbon dioxide fire suppression system according to claim 7, comprising, at step S200:

s210, manually operating to open the first manual release valve (41) and keep the second manual release valve (43) closed, wherein the first nitrogen cylinder (31) is ventilated through the first manual release valve (41) to open the first area valve (21);

s220, according to the fire situation, manually operating to open the first manual control valve (42) or the second manual control valve (44) to open the high-pressure carbon dioxide gas cylinders (11) with corresponding numbers to extinguish the fire in the first area (100).

9. The method of operating a high pressure carbon dioxide fire suppression system of claim 7, further comprising, between step S100 and step S200:

s110, confirming that all people in the first area (100) are evacuated;

s120, closing all doors and windows and channels, and closing a fan and an oil pump.

10. A vessel comprising a first area (100), a second area (200) and a high pressure carbon dioxide fire suppression system according to any one of claims 1-6, one of the first area (100) and the second area (200) being a cabin and the other being a cargo hold.