CN217311692U - Wet-type fire extinguishing system for ship - Google Patents
Wet-type fire extinguishing system for ship Download PDFInfo
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- CN217311692U CN217311692U CN202221249262.8U CN202221249262U CN217311692U CN 217311692 U CN217311692 U CN 217311692U CN 202221249262 U CN202221249262 U CN 202221249262U CN 217311692 U CN217311692 U CN 217311692U
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Abstract
The utility model discloses a boats and ships wet-type fire extinguishing system, include: a main fire pump; the water inlet end of the main fire pump is connected with a seawater main pipe; a plurality of fire hydrants; the fire hydrants are respectively arranged on the decks; a fire chief; the water outlet end of the main fire pump is communicated with the water inlet end of the fire main pipe through a first stop check valve, and the fire hydrants are communicated with the fire main pipe through branch pipes; a high-level pressure maintaining water tank; the high-level pressure maintaining water tank is positioned at the top end of the fire fighting system, a water inlet of the high-level pressure maintaining water tank is communicated with a water outlet end of the main fire fighting pump through a water supply pipeline, and a water supplementing remote control valve is installed on the water supply pipeline; the utility model discloses in can make whole fire-fighting piping be full of fire water constantly, compare conventional wet-type fire extinguishing system and need be equipped with equipment such as special pressurize jar, guarantor's pump and realize the pressurize, the utility model discloses wet-type fire extinguishing system design is simple, and comprehensive configuration cost, construction cost and maintenance cost are lower.
Description
Technical Field
The utility model belongs to the technical field of the fire extinguishing system, especially, relate to a boats and ships wet-type fire extinguishing system.
Background
The seawater fire-fighting system is a set of pipeline system which is standard on modern ships, mainly used for fire extinguishing and disaster relief and flushing the open deck when necessary, and the design principle of the system is almost similar to that of the water fire-fighting system of the land mid-low-rise building. Marine seawater fire fighting systems can be simply classified into dry and wet types.
The conventional dry-type fire-fighting system takes one or more large centrifugal fire-fighting water pumps as a water supply device, fire-fighting seawater is supplied to fire hydrants in all areas of the whole ship through a branch pipe network design, and the dry-type fire-fighting system is full of air in the pipe system at ordinary times, and when fire is to be extinguished, the fire hydrants are opened and then exhausted, and then water can be discharged, so that the water discharge time is delayed, and the timeliness of fire extinguishment and disaster relief is influenced.
The pipe network design of the conventional wet-type fire-fighting system is similar to that of a dry-type system, the wet-type fire-fighting system is provided with one or more large centrifugal water pumps as a main fire-fighting pump and is also provided with a pressure maintaining tank, a pressure stabilizing water pump, a corresponding sensor, a remote control switch valve and other matched control devices on a water supply device, so that the interior of the wet-type fire-fighting system is filled with fire-fighting water with certain pressure at any time; because the working pressure of the pressure maintaining tank can reach 10bar according to the needs of the system, and the pressure maintaining tank belongs to a III-grade pressure container of a ship, a series of processes of design, examination, manufacture, inspection, evidence obtaining and the like of the pressure maintaining tank have higher requirements, and corresponding cost needs to be paid out; in addition, because the design specification has the minimum requirement (usually 2.5-3.0 bar) for the water outlet pressure of the fire hydrant at the tail end of the ship, the pressure maintaining pressure of the wet fire-fighting system is usually higher and is usually not lower than 8 bar-10 bar, and the higher the superstructure is, the higher the pressure maintaining pressure of the wet fire-fighting system of the ship is. And since the conventional wet fire fighting system usually arranges the pressure maintaining device at the lower part of the system, the pressure maintaining device needs higher design pressure to maintain the outlet water pressure of the top fire hydrant of the system. And because the pipeline and the valve accessory which are positioned at the low position of the pipe network exist the potential difference, the internal hydrostatic pressure even exceeds the set pressure of the pressure maintaining tank, the high pressure is maintained for a long time, and the problems of leakage, leakage and the like easily occur at the pipeline connection part, the valve accessory and the like, thereby providing higher requirements for the regular maintenance and overhaul of the system.
Generally, a wet fire protection system is more complex than a dry system, the system design is more complex, and the comprehensive configuration cost, the construction cost and the maintenance cost of the system are higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the utility model provides a boats and ships wet-type fire extinguishing system, aims at solving current wet-type fire extinguishing system design complicacy, and pipe network lower part pipeline pressure is too high, leads to synthesizing configuration cost, construction cost and the higher problem of maintenance cost.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a marine wet pipe fire protection system, comprising:
a main fire pump; the water inlet end of the main fire pump is connected with a seawater main pipe;
a plurality of fire hydrants; the fire hydrants are respectively arranged on the decks;
a fire chief; the water outlet end of the main fire pump is communicated with the water inlet end of the fire main pipe through a first stop check valve, and the fire hydrants are communicated with the fire main pipe through branch pipes;
a high-level pressure maintaining water tank; the high-order pressurize water tank is located fire extinguishing system's top, and the water inlet of high-order pressurize water tank is linked together through the delivery line and the play water end of main fire pump, installs the moisturizing remote control valve on the delivery line, and the delivery port of high-order pressurize water tank is linked together through two and the top of the fire control person in charge of by check valve.
Preferably, the method further comprises the following steps:
a low liquid level switch: the low liquid level switch is arranged at the bottom of the side wall of the high-level pressure maintaining water tank and is used for monitoring the low water level of the high-level pressure maintaining water tank;
a high liquid level switch; the high liquid level switch is arranged at the top of the side wall of the low liquid level switch and used for monitoring the high water level of the high pressure maintaining water tank;
a controller; the controller is respectively and electrically connected with the low liquid level switch, the high liquid level switch, the main fire pump and the water replenishing remote control valve.
Preferably, a main switch valve is connected between the seawater main pipe and the water inlet end of the main fire pump.
Preferably, a filter is connected between the switch main valve and the main fire pump.
Preferably, the bottom end of the fire main pipe is connected with a relief valve.
Preferably, the top of the high-level pressure maintaining water tank is provided with a vent pipe.
Preferably, a third stop check valve is installed between the water inlet of the high-level pressure maintaining water tank and the water supply pipeline.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model discloses in, can make whole fire-fighting piping be full of fire water constantly, compare conventional wet-type fire extinguishing system and need be equipped with equipment such as special pressurize jar, pressurize pump and realize the pressurize, the utility model discloses wet-type fire extinguishing system design is simple, and comprehensive configuration cost, construction cost and maintenance cost are lower.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The labels in the figure are: 100. a deck; 1. a main fire pump; 101. a seawater main pipe; 2. a fire hydrant; 3. a fire chief; 301. a first stop check valve; 4. a high-level pressure maintaining water tank; 401. a water supply line; 402. a water replenishing remote control valve; 403. a second stop check valve; 404. a third stop check valve; 5. a low level switch; 6. a high liquid level switch; 7. switching on and off a main valve; 8. a filter; 9. a relief valve; 10. a gas permeable pipe; 11. and a controller.
Detailed Description
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1, a wet pipe fire protection system for a ship includes:
a main fire pump 1; the water inlet end of the main fire pump 1 is connected with a seawater main pipe 101, and external seawater can enter the main fire pump 1 through the seawater main pipe 101, so that a water source for fire fighting or cleaning of the deck 100 can be provided;
a plurality of fire hydrants 2; the fire hydrants 2 are respectively arranged on the deck 100 of the plurality of layers, and the fire hydrants 2 are arranged at each position of the ship so as to be used for fire fighting at the first time when a fire disaster happens;
a fire main 3; the water outlet end of the main fire pump 1 is communicated with the water inlet end of the fire main pipe 3 through a first stop check valve 301, and the fire hydrants 2 are communicated with the fire main pipe 3 through branch pipes; when the main fire pump 1 runs, seawater can be transmitted to the fire main 3 along the first stop check valve 301, and the fire main 3 can supply water to the fire hydrants 2;
a high-level pressure maintaining water tank 4; the high-level pressure maintaining water tank 4 is positioned at the top end of the fire fighting system, a water inlet of the high-level pressure maintaining water tank 4 is communicated with a water outlet end of the main fire pump 1 through a water supply pipeline 401, and the main fire pump 1 can supply water to the interior of the high-level pressure maintaining water tank 4;
the water supply pipeline 401 is provided with the water replenishing remote control valve 402, when the main fire pump 1 supplies water to the fire main pipe 3 for fire fighting or deck 100 cleaning operation, the water replenishing remote control valve 402 is closed, so that the situation that the main fire pump 1 continuously supplies water to the high-level pressure maintaining water tank 4 during fire fighting or deck 100 cleaning operation is avoided;
the water outlet of the high-level pressure maintaining water tank 4 is communicated with the top end of the fire main pipe 3 through a second stop check valve 403; the water in the high-level pressure maintaining water tank 4 can be transmitted to the whole fire main 3 and a fire fighting system along the direction from the high position to the bottom, the high-level pressure maintaining water tank 4 ensures that the whole fire fighting pipe system is filled with fire fighting water all the time, and the fire hydrant 2 can spray water for fire extinguishing at the first time when a fire disaster occurs;
specifically, through the mutually matched arrangement of the high-position pressure maintaining water tank 4 and the fire main pipe 3, the whole fire fighting piping system can be constantly filled with fire water, and compared with a conventional wet-type fire fighting system, the system needs to be provided with equipment such as a special pressure maintaining tank, a pressure maintaining pump and the like to realize pressure maintaining, the wet-type fire fighting system only needs to be additionally provided with the high-position pressure maintaining water tank 4 on the basis of the configuration of a conventional dry-type system (which is equivalent to a fire fighting system consisting of the fire main pipe 3, a fire hydrant 2 and other components), so that the wet-type pressure maintaining of the whole fire fighting piping system can be realized, and compared with the pressure maintaining tank in the existing wet-type fire fighting system, the high-position pressure maintaining water tank 4 has lower cost; the high-level pressure maintaining water tank 4 is positioned at the topmost end of the whole fire fighting system, the pressure of the bottommost pipeline and parts of the fire fighting system is only hydrostatic pressure caused by height difference under the ordinary state, the pressure is usually 3.0-4.5 bar according to the actual condition of an ordinary large-scale commercial ship, the pressure is only about half of that of a conventional wet fire fighting system of a ship at the same level, the leakage of the bottom pipeline is obviously improved, the workload of maintenance is obviously reduced, the maintenance cost is lower, the main problem that the water outlet of the conventional dry fire fighting system is lagged is further avoided, and the problems that the conventional wet fire fighting system is complex in design, the pipeline pressure at the lower part of a pipe network is overhigh, and the comprehensive configuration cost, the construction cost and the maintenance cost are higher are also avoided;
in addition, the problem of overlong water outlet of the conventional dry fire-fighting system is completely solved, due to the incompressible characteristic of water, a fire-extinguishing water column meeting the standard requirement can be obtained at any fire hydrant on a ship as long as the fire pump is successfully started, the water outlet time is only limited by the starting speed of the main fire pump, and the water outlet speed can even reach the conventional wet fire-fighting system;
the working principle is as follows:
the utility model provides a boats and ships wet-type fire extinguishing system has boats and ships fire control and deck 100 flushing function concurrently, and at the daily operation in-process of boats and ships, this system has the state of three kinds of differences, is respectively: normal state, deck 100 flushing operation state, fire fighting operation state;
normal state
In this state, the fire-fighting water in the ship wet-type fire-fighting system of the utility model has no active loss, but because of the leakage of the pipe system and the natural evaporation in the high-level pressure-maintaining water tank 4, the fire-fighting water amount in the pipeline of the fire-fighting system is gradually reduced, which is expressed as the liquid level of the high-level pressure-maintaining water tank 4 is reduced; at the moment, the water replenishing remote control valve 402 is opened, the main fire pump 1 is opened, and seawater can be replenished to the high-level pressure maintaining water tank 4 along the seawater main pipe 101, the main fire pump 1 and the water supply pipeline 401; in addition, due to the existence of the second stop check valve 403, the seawater supplied after the main fire pump 1 is started cannot enter the fire-fighting pipe network through the first stop check valve 301, and only enters the high-level pressure-maintaining water tank 4 from the opened water replenishing remote control valve 402;
When the ship wet fire-fighting system is used for flushing the deck 100, the main fire pump 1 needs to be manually started for supplying water, the water-supply remote control valve 402 cannot be automatically opened at the moment, and the water supplied by the main fire pump 1 is sprayed out from the opened fire hydrant 2 through a fire-fighting pipe system; during the operation of the main fire pump 1, the internal pressure of the fire fighting pipeline is greater than the hydrostatic pressure generated by the high-level pressure maintaining water tank 4, so that a second stop check valve 403 at the water outlet of the high-level pressure maintaining water tank 4 is in a closed state, and the liquid level of the high-level pressure maintaining water tank 4 cannot change; after the flushing operation of the deck 100 is finished, the main fire pump 1 needs to be shut down manually;
fire fighting working state
The process of performing fire extinguishing work using the ship wet fire fighting system is the same as the working principle of the process of flushing the deck 100, and only the target work is different.
Further, as shown in fig. 1, a main switch valve 7 is connected between the seawater main pipe 101 and the water inlet end of the main fire pump 1; a filter 8 is connected between the main switch valve 7 and the main fire pump 1;
specifically, the operation of the whole fire fighting system can be controlled by opening and closing the main valve 7; the filter 8 can filter seawater, so that the situation that some fire-fighting pipelines are blocked is avoided;
further, as shown in fig. 1, the bottom end of the main fire fighting pipe 3 is connected with a relief valve 9;
specifically, when the main fire fighting pipe 3 needs to be maintained or water is not needed inside the main fire fighting pipe 3, the water inside the main fire fighting pipe 3 can be discharged through the discharge valve 9;
further, as shown in fig. 1, a vent pipe 10 is installed at the top of the high-level pressure maintaining water tank 4;
specifically, the internal air pressure of the high-level pressure maintaining water tank 4 can be communicated with the external air pressure through the vent pipe 10, so that the situation that the internal pressure of the high-level pressure maintaining water tank 4 is too high is avoided;
further, as shown in fig. 1, a third stop check valve 404 is installed between the water inlet of the high-level pressure maintaining water tank 4 and the water supply pipeline 401;
specifically, the third stop check valve 404 can prevent the water inside the high-level pressure maintaining water tank 4 from flowing back to the water supply line 401.
Example 2
A marine wet pipe fire protection system, comprising:
a main fire pump 1; the water inlet end of the main fire pump 1 is connected with a seawater main pipe 101;
a plurality of fire hydrants 2; the fire hydrants 2 are respectively arranged on the decks 100;
a fire main 3; the water outlet end of the main fire pump 1 is communicated with the water inlet end of the main fire fighting pipe 3 through a first stop check valve 301, and the fire hydrants 2 are communicated with the main fire fighting pipe 3 through branch pipes;
a high-level pressure maintaining water tank 4; the high-level pressure maintaining water tank 4 is positioned at the top end of the fire fighting system, a water inlet of the high-level pressure maintaining water tank 4 is communicated with a water outlet end of the main fire pump 1 through a water supply pipeline 401, a water supplementing remote control valve 402 is installed on the water supply pipeline 401, and a water outlet of the high-level pressure maintaining water tank 4 is communicated with the top end of the main fire fighting pipe 3 through a second stop check valve 403;
example 2 differs from example 1 in that:
further comprising: low liquid level switch 5: the low liquid level switch 5 is installed at the bottom of the side wall of the high-level pressure maintaining water tank 4 and is used for monitoring the low water level of the high-level pressure maintaining water tank 4; a high liquid level switch 6; the high liquid level switch 6 is arranged at the top of the side wall of the low liquid level switch 5 and used for monitoring the high water level of the high pressure maintaining water tank 4; a controller 11; the controller 11 is respectively electrically connected with the low liquid level switch 5, the high liquid level switch 6, the main fire pump 1 and the water replenishing remote control valve 402;
specifically, as shown in fig. 1, by the mutual cooperation of the low liquid level switch 5, the high liquid level switch 6, the main fire pump 1 and the controller 11, the low liquid level switch 5 and the high liquid level switch 6 can automatically monitor the liquid level of the high pressure maintaining water tank 4 through the controller 11, so that the liquid level of the high pressure maintaining water tank 4 is maintained between the low liquid level switch 5 and the high liquid level switch 6, and the inside of the high pressure maintaining water tank 4 is ensured to continuously maintain a reasonable liquid level, so that fire fighting water is continuously maintained in the whole fire fighting pipeline;
principle of operation
As shown in fig. 1, when the fire-fighting water in the ship wet-type fire-fighting system is not actively consumed, but the pipe system has water leakage and natural evaporation in the high-level pressure-maintaining water tank 4, the fire-fighting water amount in the pipeline of the fire-fighting system is gradually reduced, which is represented by the liquid level of the high-level pressure-maintaining water tank 4 being lowered; when the liquid level of the high-level pressure maintaining water tank 4 is lowered to the low-level switch 5, the liquid level is fed back to the controller 11, the controller 11 controls the water replenishing remote control valve 402 to be opened and the main fire pump 1 to be started, at this time, due to the existence of the second stop check valve 403, the whole fire fighting pipeline is in a closed state outwards after the first stop check valve 301, and the water supplied by the main fire pump 1 can only flow to the high-level pressure maintaining water tank 4 through the opened water replenishing remote control valve 402 through the water supply pipeline 401; when the liquid level of high-order pressurize water tank 4 rose to high liquid level switch 6, after controller 11 received signal, controller 11 control moisturizing remote control valve 402 closed, and control main fire pump 1 stops to can accomplish the automatic water supply of high-order pressurize water tank 4, need not manual monitoring, convenient to use.
Claims (7)
1. A marine wet fire protection system, comprising:
a main fire pump (1); the water inlet end of the main fire pump (1) is connected with a seawater main pipe (101);
a plurality of fire hydrants (2); the fire hydrants (2) are respectively arranged on the decks;
a fire main (3); the water outlet end of the main fire pump (1) is communicated with the water inlet end of the main fire fighting pipe (3) through a stop check valve I (301), and the fire hydrants (2) are communicated with the main fire fighting pipe (3) through branch pipes;
a high-level pressure maintaining water tank (4); the high-level pressure maintaining water tank (4) is located the top of fire extinguishing system, and the water inlet of high-level pressure maintaining water tank (4) is linked together through the water supply pipeline (401) and the play water end of main fire pump (1), installs moisturizing remote control valve (402) on water supply pipeline (401), and the delivery port of high-level pressure maintaining water tank (4) is linked together through the top of ending check valve two (403) and fire control person in charge (3).
2. The marine wet fire protection system of claim 1, further comprising:
low level switch (5): the low liquid level switch (5) is installed at the bottom of the side wall of the high-level pressure maintaining water tank (4) and is used for monitoring the low water level of the high-level pressure maintaining water tank (4);
a high level switch (6); the high liquid level switch (6) is arranged at the top of the side wall of the low liquid level switch (5) and is used for monitoring the high water level of the high pressure maintaining water tank (4);
a controller (11); the controller (11) is respectively electrically connected with the low liquid level switch (5), the high liquid level switch (6), the main fire pump (1) and the water replenishing remote control valve (402).
3. Marine wet fire fighting system according to claim 1, characterized in that a main on-off valve (7) is connected between the seawater main (101) and the water inlet end of the main fire pump (1).
4. Marine wet fire fighting system according to claim 3, characterized in that a filter (8) is connected between the main switching valve (7) and the main fire pump (1).
5. Marine wet fire fighting system according to claim 1, characterized in that a discharge valve (9) is connected to the bottom end of the main fire fighting pipe (3).
6. Marine wet fire fighting system according to claim 1, characterized in that a gas permeable tube (10) is mounted on top of the high-level holding water tank (4).
7. Marine wet fire fighting system according to claim 1, characterized in that a third stop check valve (404) is installed between the water inlet of the high-level holding water tank (4) and the water supply line (401).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221249262.8U CN217311692U (en) | 2022-05-20 | 2022-05-20 | Wet-type fire extinguishing system for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221249262.8U CN217311692U (en) | 2022-05-20 | 2022-05-20 | Wet-type fire extinguishing system for ship |
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| Publication Number | Publication Date |
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| CN217311692U true CN217311692U (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221249262.8U Active CN217311692U (en) | 2022-05-20 | 2022-05-20 | Wet-type fire extinguishing system for ship |
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- 2022-05-20 CN CN202221249262.8U patent/CN217311692U/en active Active
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