Tunnel fire-fighting structure

Abstract

The utility model discloses a tunnel fire-fighting structure which comprises a drainage ditch, a water collecting well, a filter, a partition plate, a fire-fighting mechanism and a first drainage mechanism, the drainage ditch and the water collecting well communicated with the drainage ditch are both arranged at the bottom of a tunnel, the filter is arranged in the water collecting well, and the partition plate is arranged in the water collecting well and divides the water collecting well into a settling area and a clear water area. The fire extinguishing end of the fire fighting mechanism is arranged at the top of the tunnel, the input end of the fire fighting mechanism is arranged in the clear water area, the input end of the first drainage mechanism is arranged in the settling area, and the output end of the first drainage mechanism is arranged outside the tunnel. The utility model has the advantages that the water-collecting well is arranged in a partitioned manner, so that the water-collecting well has the function of a fire pool, rainwater is recycled to be used as later fire-fighting water of a fire-fighting mechanism, rainwater resources are fully utilized, the civil engineering and water resource cost for independently constructing the fire pool is greatly saved in a dual-purpose mode, and the fire-fighting cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of fire safety technology, specifically to a tunnel fire protection structure. Background Technology

[0002] With rapid urban development, the number of traffic tunnels has surged. While these tunnels save above-ground space, their enclosed structure, difficulty in smoke dispersion, and challenges in personnel evacuation also present significant fire risks. Therefore, equipping them with reliable fire protection systems from the initial construction stage is crucial. However, the most numerous type III and IV short tunnels typically only require fire extinguishers and do not need a complete fire water supply system. This makes these tunnels, although relatively less dangerous in a single fire, the most frequent weak points for fires. Equipping them with the high-cost fire suppression systems used in traditional long tunnels would present a significant economic burden. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to reduce the cost of tunnel fire protection.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A tunnel fire protection structure includes a drainage ditch, a sump, a filter, a baffle, a fire protection mechanism, and a first drainage mechanism. The drainage ditch and the sump connected to the drainage ditch are both located at the bottom of the tunnel. A filter is installed in the sump. A baffle is installed in the sump and divides the sump into a sedimentation zone and a clear water zone. The top surface of the baffle is lower than the bottom surface of the drainage ditch. The filter is located in the sedimentation zone. The fire extinguishing end of the fire protection mechanism is located at the top of the tunnel, and the input end is located in the clear water zone. The input end of the first drainage mechanism is located in the sedimentation zone, and the output end is located outside the tunnel.

[0006] The tunnel's fire protection structure is divided into sections by water collection wells, which enables it to function as a fire water tank. Rainwater is recycled for use by the fire department, making full use of rainwater resources. This "one tank, two uses" model significantly reduces the civil engineering and water resource costs of building a separate fire water tank, thereby greatly reducing fire protection costs.

[0007] Preferably, the fire protection system includes fire pipes and sprinklers. One end of the fire pipe is located at the top of the tunnel and connected to multiple sprinklers, while the other end of the fire pipe is located in the clean water area.

[0008] Preferably, the fire protection system also includes temperature detectors and flame detectors installed at the top of the tunnel.

[0009] By combining sprinklers, temperature detectors, flame detectors, and fire alarm buttons, a complete fire protection system with detection, alarm, and sprinkler fire suppression functions is provided for the tunnel, significantly improving safety assurance capabilities.

[0010] Preferably, the first drainage mechanism includes a first water pump and a first drainage pipe. The first water pump is located in the sedimentation area, and one end of the first drainage pipe is connected to the first water pump, while the other end is located outside the tunnel.

[0011] Preferably, the first drainage mechanism further includes a first check valve disposed on the first drainage pipe.

[0012] Preferably, it also includes a second drainage mechanism, which includes a second water pump and a second drainage pipe. The second water pump is located in the clean water area, and one end of the second drainage pipe is connected to the second water pump, while the other end is located outside the tunnel.

[0013] Preferably, the second drainage mechanism further includes a second check valve disposed on the second drain pipe.

[0014] Preferably, the input end of the fire-fighting device is connected to the second drain pipe.

[0015] Preferably, a first valve is installed on the second drainage pipe between the input end of the fire-fighting mechanism and the outside of the tunnel, and a second valve is installed at the input end of the fire-fighting mechanism.

[0016] Preferably, both the sedimentation zone and the clear water zone are equipped with liquid level sensors.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The tunnel's fire protection structure is divided into sections by water collection wells, which enables it to function as a fire water tank. Rainwater is recycled for use in the later fire-fighting operations of the fire department, making full use of rainwater resources. The "one tank, two uses" model significantly saves on the civil engineering and water resource costs of building a separate fire water tank, and greatly reduces fire protection costs.

[0019] 2. By combining sprinklers, temperature detectors, flame detectors, and fire alarm buttons, a complete fire protection system with detection, alarm, and sprinkler fire suppression functions is provided for the tunnel, significantly improving safety assurance capabilities. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model. Detailed Implementation

[0021] To facilitate understanding of the technical solution of this utility model by those skilled in the art, the technical solution of this utility model will now be further described in conjunction with the accompanying drawings.

[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited.

[0024] See Figure 1 This embodiment discloses a tunnel fire protection structure, including a drainage ditch 1, a water collection well 2, a main drainage pipe 3, a filter 4, a partition 5, a first drainage mechanism 6, a second drainage mechanism 7, a liquid level sensor 8, a fire protection mechanism 9, and a central control processor 10.

[0025] Drainage ditch 1 and water collection well 2 are both located at the bottom of tunnel 100. Drainage ditch 1 is used to collect rainwater flowing into the open section of tunnel 100. Drainage ditch 1 is connected to water collection well 2 through drainage main pipe 3, and is used to discharge rainwater in drainage ditch 1 into water collection well 2 for collection.

[0026] A baffle 5 is installed inside the water collection well 2, dividing it into a sedimentation zone 21 and a clear water zone 22. A filter 4 is installed in the sedimentation zone 21 to filter the sewage discharged from the main drainage pipe 3, intercepting large impurities. The filter 4 is cleaned regularly. It should be noted that the filter 4 is a product that can be purchased directly from the market.

[0027] The top surface of the partition 5 is lower than the bottom surface of the drainage ditch 1, ensuring that the rainwater discharged from the drainage ditch 1 first settles in the sedimentation zone 21. When the sedimentation zone 21 is full of rainwater, the rainwater will overflow from the top of the partition 5 into the clear water zone 22.

[0028] The first drainage mechanism 6 includes a first water pump 61, a first drain pipe 62, and a first check valve 63. The first water pump 61, electrically connected to the central control processor 10, is located at the bottom of the sedimentation zone 21. One end of the first drain pipe 62 is connected to the first water pump 61, and the other end is located in the municipal drainage system 200 outside the tunnel 100. The first check valve 63 is installed on the first drain pipe 62 to prevent rainwater backflow. By driving the first water pump 61, rainwater at the bottom of the sedimentation zone 21 is discharged into the municipal drainage system 200.

[0029] The second drainage mechanism 7 includes a second water pump 71, a second drain pipe 72, and a second check valve 73. The second water pump 71, electrically connected to the central control processor 10, is located at the bottom of the clear water zone 22. One end of the second drain pipe 72 is connected to the second water pump 71, and the other end is located in the municipal drainage system 200 outside the tunnel 100. The second check valve 73 is installed on the second drain pipe 72 to prevent rainwater backflow. By driving the second water pump 71, rainwater in the clear water zone 22 is discharged into the municipal drainage system 200 for drainage when the water level in the daily collection well 2 is too high.

[0030] In this embodiment, two sets of second water pumps 71 are connected in parallel. The output ends of both sets of second water pumps 71 are connected to the second drain pipe 72, and a second check valve 73 is provided on the output ends of both sets of second water pumps 71. By setting up two sets of second water pumps 71, one is used and the other is on standby.

[0031] Both the sedimentation zone 21 and the clear water zone 22 are equipped with level sensors 8 that are electrically connected to the central control processor 10 to monitor the water level in the sedimentation zone 21 and the clear water zone 22.

[0032] The fire protection system 9 includes a fire pipe 91, sprinklers 92, a temperature detector 93, a flame detector 94, and a fire alarm button 95. The output end of the fire pipe 91 is located at the top of the tunnel 100 and connected to multiple sprinklers 92. The other end of the fire pipe 91 is connected to the second drain pipe 72. The temperature detector 93 and the flame detector 94 are located at the top of the tunnel 100. The temperature detector 93 is used to monitor the internal temperature of the tunnel 100, and the flame detector 94 is used to monitor whether there is a flame inside the tunnel 100. The fire alarm button 95 is located on the side of the tunnel 100 and is used for manual alarm in case of fire. The temperature detector 93, the flame detector 94, and the fire alarm button 95 are all electrically connected to the central control processor 10.

[0033] A first valve 300 is installed on the second drain pipe 72 between the fire-fighting pipeline 91 and the municipal drainage system 200, and a second valve 400 is installed at the inlet end of the fire-fighting pipeline 91. Under normal circumstances, the first valve 300 is normally open, and the second valve 400 is normally closed. In this embodiment, both the first valve 300 and the second valve 400 are electric valves, and both electric valves are electrically connected to the central control processor 10.

[0034] The working principle of this embodiment is as follows:

[0035] When fire protection system 9 is not activated: Under normal conditions, the tunnel's fire protection structure is in rainwater collection mode. The first valve 300 is normally open, and the second valve 400 is normally closed. During rain, rainwater is collected from drainage ditch 1 to collection well 2. Liquid level sensors 8 in sedimentation zone 21 and clear water zone 22 monitor the water level in real time and transmit the signal to the central control processor 10. If the rainfall outside the tunnel 100 is large, causing the water level in collection well 2 to be too high, the central control processor 10 will determine the water level is too high through liquid level sensors 8 and then start the first water pump 61 and / or the second water pump 71 to drain the water. Generally, the first water pump 61 in sedimentation zone 21 is activated first to drain the rainwater to the municipal drainage system 200. If the water level continues to rise, the second water pump 71 in clear water zone 22 will be activated to assist in drainage and drain the rainwater to the municipal drainage system 200 to ensure that the tunnel 100 does not flood.

[0036] When the fire protection system 9 is activated: When a fire occurs in tunnel 100, the fire alarm button 95, temperature detector 93 or flame detector 94 sends a signal to the central control processor 10. When the central control processor 10 determines that there are at least two alarm signals, it issues an instruction to open the second valve 400 and close the first valve 300. At the same time, it starts the second water pump 71 in the clear water zone 22 to transport the clear water in the clear water zone 22 to the fire pipeline 91, so that the sprinklers 92 at the top of tunnel 100 can spray water to extinguish the fire, realizing a rapid and automatic emergency fire response.

[0037] In summary, the tunnel fire protection structure disclosed in this embodiment has the function of a fire water tank by setting up water collection wells in different zones. It can recycle rainwater for fire water use in the later stages of fire protection by fire protection agency 9, making full use of rainwater resources. The "one pool, two uses" model greatly saves the civil engineering and water resource costs of building a separate fire water tank and significantly reduces fire protection costs.

[0038] In addition, the coordinated installation of sprinkler heads 92, temperature detectors 93, flame detectors 94, and fire alarm buttons 95 provides tunnel 100 with a complete fire protection system that has detection, alarm, and sprinkler fire extinguishing functions, significantly improving safety assurance capabilities.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] The above-described embodiments are merely examples of implementation methods of the utility model. The scope of protection of this utility model is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model.

Claims

1. A tunnel fire protection structure, characterized by: The fire-fighting mechanism includes a fire-fighting pipeline and a spray head, one end of the fire-fighting pipeline is arranged at the top of the tunnel and is connected with the plurality of spray heads, and the other end of the fire-fighting pipeline is arranged in the clean water area.

2. A tunnel fire protection structure according to claim 1, characterised in that: The fire-fighting mechanism further includes a temperature detector and a flame detector arranged at the top of the tunnel.

3. A tunnel fire protection structure according to claim 2, wherein: The first drainage mechanism further includes a first check valve arranged on the first drainage pipeline.

4. A tunnel fire protection structure according to claim 1, wherein: The second drainage mechanism includes a second water pump and a second drainage pipeline, the second water pump is arranged in the clean water area, one end of the second drainage pipeline is connected with the second water pump, and the other end of the second drainage pipeline is arranged outside the tunnel.

5. A tunnel fire protection structure according to claim 4, characterised in that: The second drainage mechanism further includes a second check valve arranged on the second drainage pipeline.

6. A tunnel fire protection structure according to claim 1, wherein: The input end of the fire-fighting mechanism is in communication with the second drainage pipeline.

7. A tunnel fire protection structure according to claim 6, characterised in that: The second drainage pipeline between the input end of the fire-fighting mechanism and the outside of the tunnel is provided with a first valve, and the input end of the fire-fighting mechanism is provided with a second valve.

8. A tunnel fire protection structure according to claim 6, wherein: The sedimentation area and the clean water area are both provided with a liquid level sensor.

9. A tunnel fire protection structure according to claim 8, wherein: ​ 10. A tunnel fire protection structure according to claim 1, wherein: ​

Images