Wet-type seawater fire-fighting system with anti-freezing function
By installing normally open fire pumps and circulating pumps in the fire protection pipeline to maintain seawater circulation, the problem of slow response speed of dry seawater fire protection systems in low-temperature environments is solved, achieving rapid response and antifreeze functions, and improving fire protection efficiency.
Patent Information
- Application Number
- CN202422914586.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing dry seawater fire suppression systems have a slow response time in low-temperature environments, which can easily cause delays in fire response. Current technologies are unable to respond quickly and effectively extinguish fires in low-temperature environments.
A wet seawater fire suppression system is adopted, which uses a normally open fire pump and a circulating pump in the fire pipeline to keep the fire pipeline always filled with seawater and kept flowing. The high temperature of seawater prevents the pipeline from freezing. At the same time, flow regulating valves and pressure sensors are installed to ensure the stability of seawater circulation and the appropriate flow rate.
This technology ensures that the seawater in the fire hydrant pipeline remains usable even in low-temperature environments, shortening the response time of fire hydrants, improving fire extinguishing speed and efficiency, and avoiding the problem of pipeline freezing.
Smart Images
Figure CN223774211U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to offshore fire fighting field especially, a kind of wet type seawater fire fighting system with anti-freezing function. BACKGROUND
[0002] Seawater fire fighting system is the conventional fire fighting system on ship and offshore platform, and is widely applied.In some ships where temperature is too low in working environment, cold-proof measures need to be considered, and freezing prevention needs special consideration.For freezing prevention, the existing fire fighting system has dry fire fighting system, i.e., fire water pipeline is discharged clean in non-working state, so as to avoid freezing.
[0003] However, this form of fire fighting system, when encountering fire, needs to extract water from the sea to the pipeline, and then uses water to extinguish fire, which is slow in response speed, easy to cause fire delay and cause greater loss. INVENTION CONTENTS
[0004] The utility model provides a kind of wet type seawater fire fighting system with anti-freezing function to overcome the above problems.
[0005] A kind of wet type seawater fire fighting system with anti-freezing function, comprising: fire pump, circulating pump, fire hydrant and fire pipeline;
[0006] The fire hydrant is provided on the fire pipeline, and the fire pump and the circulating pump are connected in parallel in the fire pipeline, the fire pipeline has water inlet and water outlet, the water inlet and the water outlet are communicated with seawater, and a drain valve is arranged at the water outlet.
[0007] The water inlet and the water outlet of the fire pipeline are in normal open state, and the circulating pump is in normal open state, so that seawater enters the fire pipeline from the water inlet and is discharged from the water outlet, so that the fire pipeline is kept in seawater storage and flowing state.
[0008] When fire occurs, the fire pump is opened, and the drain valve is closed.
[0009] Further, a flow regulating valve and a pressure sensor are further arranged at the water outlet, and the flow regulating valve and the pressure sensor are connected with a control panel arranged in fire control room.
[0010] Further, the fire pump and the circulating pump are arranged in engine room, and the fire pump has two, and the two fire pumps are connected in parallel.
[0011] Further, the fire hydrant is arranged on the main pipe of the fire pipeline, a tee joint is arranged on the main pipe, and the fire hydrant is connected with the tee joint.
[0012] Further, the fire fighting pipeline is provided with an isolation valve, which is closed when a fire occurs upstream of the isolation valve.
[0013] Further, the fire fighting pipeline is provided with a relief valve, which is arranged at a low point of the fire fighting pipeline.
[0014] Further, the fire fighting pipeline comprises a portside pipeline and a starboard pipeline connected in parallel, and the starboard pipeline is provided with an orifice plate to balance the flow of the starboard pipeline and the portside pipeline.
[0015] The utility model discloses a wet type sea water fire fighting system with anti-freezing function, through the always open circulating pump, the fire fighting pipeline is always full of fire water, once having the fire, can open the fire hydrant immediately and extinguish the fire, simultaneously, the sea water is always circulated in the fire fighting pipeline, and the temperature of sea water is higher, always keeps flowing, avoids the ice in the pipeline, can make the water in the fire fighting pipeline keep the state of ready for use. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be to the embodiment or prior art description needed to use the drawing a simple introduction, obviously, the following description in the drawing is some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.
[0017] Figure 1 It is a wet type sea water fire fighting system structure schematic diagram with anti-freezing function for the utility model embodiment 1 discloses;
[0018] Figure 2 It is the cabin structure schematic diagram for the utility model embodiment 1 discloses;
[0019] Figure 3 It is the fire fighting pipeline schematic diagram at the bow for the utility model embodiment 1 discloses;
[0020] Figure 4 It is a wet type sea water fire fighting system structure schematic diagram with anti-freezing function for the utility model embodiment 2 discloses;
[0021] Figure 5 It is the fire hydrant installation schematic diagram for the utility model embodiment 2 discloses.
[0022] In the drawing:
[0023] 1, fire pump;2, circulating pump;3, fire hydrant;4, fire fighting pipeline;5, discharge valve;6, flow regulating valve;7, pressure sensor;8, cabin;9, tee;10, isolation valve;11, relief valve;12, orifice plate. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0025] Example 1
[0026] like Figures 1-3 As shown, this embodiment discloses a wet seawater fire protection system with antifreeze function, characterized in that it includes: a fire pump 1, a circulating pump 2, a fire hydrant 3, and a fire pipeline 4;
[0027] The fire hydrant 3 is installed on the fire pipeline 4. The fire pump 1 and the circulating pump 2 are connected in parallel in the fire pipeline 4. The fire pipeline 4 has an inlet and an outlet. Both the inlet and the outlet are connected to seawater. A drain valve 5 is installed at the outlet.
[0028] The inlet and outlet of the fire-fighting pipeline 4 are both normally open, and the circulating pump 2 is normally open, so that seawater enters the fire-fighting pipeline 4 from the inlet and is discharged from the outlet, so that the fire-fighting pipeline 4 keeps the seawater stored and flowing.
[0029] In the event of a fire, the fire pump 1 is turned on and the exhaust valve 5 is turned off.
[0030] This utility model discloses a wet seawater fire-fighting system with antifreeze function. Through a normally open circulating pump, the fire-fighting pipeline is always filled with fire-fighting water. Once a fire occurs, the fire hydrant can be opened immediately to extinguish the fire. At the same time, seawater is always circulating in the fire-fighting pipeline. The seawater is warm and always flowing, which prevents the pipeline from freezing and keeps the water in the fire-fighting pipeline always available.
[0031] The fire protection system disclosed in this utility model has a small circulating pump capacity, which only needs to maintain a certain amount of seawater to meet the antifreeze requirements, while the fire pump has a large capacity and can provide enough seawater for fire extinguishing.
[0032] In this embodiment, the engine room 8 is equipped with the fire pump 1 and the circulation pump 2. There are two fire pumps 1 connected in parallel. Both the fire pump 1 and the circulation pump 2 draw seawater from the sea and discharge it from the hull valves at the bow and / or stern. In low-temperature environments, the outdoor temperature of the ship is far below freezing, while the temperature of the seawater drawn from the hull by the circulation pump 2 is above zero degrees Celsius. The continuous supply of seawater heats the pipelines in the low-temperature environment, achieving the purpose of antifreeze. At the same time, the seawater always fills the fire pipelines and is in a pressurized state, which can effectively shorten the response time of the fire hydrants and improve the response speed.
[0033] In this embodiment, a flow regulating valve 6 and a pressure sensor 7 are also provided at the water outlet. Both the flow regulating valve 6 and the pressure sensor 7 are connected to the control panel located in the fire control room. The pressure sensor monitors the pressure at the outlet, and the flow regulating valve adjusts the outlet flow rate to ensure that there is always circulating water in the pipeline at a suitable flow rate.
[0034] In this embodiment, the fire-fighting pipeline 4 is equipped with an isolation valve 10. When a fire occurs upstream of the isolation valve 10, the isolation valve 10 closes. After the isolation valve 10 closes, the upstream fire hydrant can have sufficient water flow, which is beneficial for fire extinguishing.
[0035] In this embodiment, the fire-fighting pipeline 4 is equipped with a drain valve 11, which is located at the lowest point of the fire-fighting pipeline 4. The drain valve 11 can be used to drain residual water in the pipeline during maintenance operations.
[0036] Example 2
[0037] like Figure 4 As shown, this embodiment differs from Embodiment 1 in that, in this embodiment, the fire-fighting pipeline 4 includes parallel port and starboard pipelines. The starboard pipeline is equipped with a throttling orifice plate 12 to balance the flow rates of the starboard and port pipelines. In this embodiment, the pipeline pressure is adjusted by the throttling orifice plate 12 to ensure consistent pressure drop and balanced flow rates, thus avoiding poor antifreeze performance caused by uneven flow rates.
[0038] like Figure 5 As shown, in this embodiment, the fire hydrant 3 is installed on the main pipe of the fire pipeline 4, and a tee fitting 9 is provided on the main pipe. The fire hydrant 3 is connected to the tee fitting 9. Direct connection of the fire hydrant 3 to the tee fitting 9 shortens the distance between the fire hydrant 3 and the main pipe, allowing heat from the main pipe to be transferred to the fire hydrant and preventing it from freezing. In this embodiment, where the fire pipeline cannot reach the site in a straight line, the main pipe of the fire pipeline is bent into an Ω shape to avoid long branch lines, thereby preventing the fire hydrant from freezing. Simultaneously, this facilitates stress release and deformation of the main pipe.
[0039] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A wet-type sea water fire extinguishing system having a freeze prevention function, characterized by comprising: The invention relates to a fire-fighting system for a ship, comprising: a fire pump (1), a circulation pump (2), a hydrant (3) and a fire pipe (4); the hydrant (3) is arranged on the fire pipe (4), the fire pump (1) and the circulation pump (2) are arranged in parallel in the fire pipe (4), the water inlet and the water outlet of the fire pipe (4) are connected to seawater, and a drain valve (5) is arranged at the water outlet; the water inlet and the water outlet of the fire pipe (4) are in a normally open state, and the circulation pump (2) is in a normally open state, so that seawater enters the fire pipe (4) from the water inlet and is discharged from the water outlet, and the fire pipe (4) is kept in a seawater storage and flowing state; when a fire occurs, the fire pump (1) is turned on, and the drain valve (5) is closed.
2. The wet sea water fire extinguishing system having a freeze prevention function according to claim 1, wherein a flow regulating valve (6) and a pressure sensor (7) are arranged at the water outlet, and the flow regulating valve (6) and the pressure sensor (7) are connected to a control panel arranged in a fire control room.
3. The wet sea water fire extinguishing system with anti-freezing function according to claim 1, characterized in that, the fire pump (1) and the circulation pump (2) are arranged in a machinery room (8), and the fire pump (1) has two pumps in parallel.
4. The wet sea water fire extinguishing system with anti-freezing function according to claim 1, characterized in that, the hydrant (3) is arranged on a main pipe of the fire pipe (4), a three-way piece (9) is arranged on the main pipe, and the hydrant (3) is connected to the three-way piece (9).
5. The wet sea water fire extinguishing system with anti-freezing function according to claim 1, characterized in that, the fire pipe (4) is provided with an isolation valve (10), and the isolation valve (10) is closed when a fire occurs upstream of the isolation valve (10).
6. The wet sea water fire extinguishing system having anti-freezing function according to claim 1, wherein the fire pipe (4) is provided with a relief valve (11), and the relief valve (11) is arranged at a low point of the fire pipe (4).
7. The wet sea water fire extinguishing system with anti-freezing function according to claim 1, characterized in that, the fire pipe (4) comprises a left side pipe and a right side pipe in parallel, the right side pipe is provided with an orifice plate (12), so that the flow of the right side pipe is balanced with the flow of the left side pipe.