Underwater comprehensive pipe gallery drainage ditch fire partition passing structure
By using a combination of drainage ditches, water seal wells, UPVC pipes, fire-blocking rings and liquid level sensors in the underwater integrated pipeline corridor, the problem of the drainage ditch of the underwater integrated pipeline corridor crossing the fire partition is solved, effective isolation in case of fire and connectivity under normal circumstances are achieved, and equipment investment and maintenance costs are reduced.
Patent Information
- Application Number
- CN202422840602.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-11-21
AI Technical Summary
In the existing technology, the drainage ditch of the underwater integrated pipeline corridor cannot cross the fire compartment, which may cause the fire to spread from one fire compartment to another. In addition, a drainage pump room needs to be set up in each fire compartment, resulting in duplicate investment and construction risks.
A combination of drainage ditches, water seal wells, UPVC pipes, fire-blocking rings and liquid level sensors is used to achieve drainage across fire compartments through the evaporation of water in the water seal wells and the expansion and sealing of the fire-blocking rings, and to provide timely alarms and fire extinguishing in case of fire.
It achieves effective separation of fire partitions in the event of a fire, reduces equipment investment and maintenance costs, and at the same time maintains the connectivity of drainage ditches under normal circumstances, improving the safety and reliability of fire partitions.
Smart Images
Figure CN223343329U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fire prevention of an underwater integrated pipe gallery and the technical field of engineering drainage, in particular to a fire prevention partition structure of a drainage ditch of an underwater integrated pipe gallery. Background Art
[0002] With the acceleration of urbanization and the continuous development of urban infrastructure, the construction and management of comprehensive pipeline corridors, as an underground comprehensive pipeline corridor facility that integrates comprehensive pipeline systems such as electricity, communications, water supply, and drainage, have become an important part of urban development. Underground comprehensive pipeline corridors are as short as a few kilometers and as long as dozens of kilometers. There is a high possibility of fire inside the corridor due to damage and aging of the lines or the presence of dangerous gases. In order to ensure the fire safety of the entire comprehensive pipeline corridor, it is often necessary to divide the entire corridor into several fire zones. When a fire occurs, the fire can be confined to a certain local space for a certain period of time to prevent the fire from spreading. At the same time, the partitions of the fire zones also have a barrier effect on smoke.
[0003] According to the Code for Fire Protection Design of Buildings (GB50016-2014), the integrity and airtightness of fire compartments should be ensured, drainage ditches should not pass through fire compartments, and underground integrated pipeline corridors are generally divided into fire compartments every 200m. When the integrated pipeline corridor crosses the sea or river, since it is an underwater integrated pipeline corridor, there is generally no intermediate ventilation shaft. If the drainage ditch cannot pass through the fire compartment, it will lead to the installation of a drainage pump room in each fire compartment. On the one hand, it will cause repeated investment in equipment and difficulty in subsequent maintenance. On the other hand, for pipeline corridors constructed by underwater shield method, excavating pump pits will damage the shield segments, causing greater construction risks due to fire.
[0004] Therefore, if effective measures can be taken to make the drainage ditch cross the fire partition, then it is only necessary to set up a wastewater pump room at the lowest point of the integrated pipeline corridor. This can not only save investment costs, but also minimize the subsequent maintenance costs. However, this method destroys the airtightness of the fire partition. If there are no effective measures, the fire will extend from the drainage ditch to the adjacent fire partition, making the fire partition ineffective. Utility Model Content
[0005] Based on the problem that existing underground pipeline corridor engineering fields cannot achieve drainage across fire partitions, the utility model provides an underwater comprehensive pipeline corridor drainage ditch through the fire partition structure to ensure the effective separation of windproof partitions under fire conditions, while ensuring the smooth drainage of the drainage ditch across fire partitions under normal circumstances, effectively solving the problem of drainage across fire partitions and having high engineering promotion value.
[0006] The technical solution adopted by the utility model is: an underwater integrated pipe gallery drainage ditch over-fire partition structure, comprising:
[0007] Drainage ditch, water seal well, UPVC pipe, fireproof ring, liquid level sensor and fire door, the drainage ditch is symmetrically arranged in two sections with the fire door as the boundary, and the water seal well is symmetrically arranged in two sections with the fire door as the boundary.
[0008] Furthermore, the water seal well is connected to the drainage ditch, and the depth of the water seal well is greater than the depth of the drainage ditch.
[0009] Furthermore, the UPVC pipe is connected to the two water seal wells, and the installation position of the UPVC pipe is lower than the bottom surface of the drainage ditch.
[0010] Furthermore, the liquid level sensor is fixedly installed in the water seal well.
[0011] Furthermore, the fire arrester ring is installed in the middle section of the UPVC pipe and just below the fire door.
[0012] Furthermore, the firestop ring is a plastic pipe firestop ring.
[0013] The beneficial effects of the utility model are:
[0014] 1. Through the reasonable combination of components such as drainage ditches, water seal wells, UPVC pipes, fire arrester rings and liquid level sensors, the drainage ditches are divided into fire zones and effective separation between different fire zones is achieved.
[0015] 2. Once the fire-blocking ring takes effect, the entire UPVC pipe will be unable to be used and a new pipe section must be replaced later, which is labor-intensive and time-consuming. Therefore, in order to reduce the occurrence of this situation, the utility model adopts two fire-proof partition mechanisms, namely, different barrier mechanisms are respectively exerted under the two working conditions of "small fire" and "large fire": when the fire is small, the fire is not enough to evaporate the water in the water seal well. Due to the presence of water, smoke and fire will not be able to cross the fire partition; when the fire is large and the water in the water seal well is completely evaporated, the fire-blocking ring will expand due to the heat, squeezing the UPVC pipe, blocking the pipe in a relatively short time, and preventing the fire from spreading to another fire partition.
[0016] 3. By installing a liquid level sensor in the water seal well, an alarm signal will be issued when the water level in the water seal well suddenly drops to a certain value in a short period of time. The staff will then control and coordinate the fire-fighting and ventilation equipment to extinguish the fire and perform maintenance and repairs. This is equivalent to providing an insurance policy for the fire-proof partition of the drainage ditch.
[0017] 4. The utility model takes effective measures to make the drainage ditch cross the fire partition. It is only necessary to set up a wastewater pump room at the lowest point of the underwater integrated pipeline corridor. Compared with the traditional method of setting up a water pump unit in each fire partition, it saves investment and minimizes the subsequent maintenance cost.
[0018] 5. In summary, under normal circumstances, the drainage ditch is connected across the fire compartments, and different fire compartments can adopt a unified drainage system; under fire conditions, the water seal well and fire barrier ring will respectively play the role of fire prevention and smoke prevention, thereby realizing the drainage ditch across the fire compartments and achieving effective separation between different fire compartments. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a planar schematic diagram of the utility model under normal working conditions;
[0020] Figure 2 It is a cross-sectional schematic diagram of the utility model under normal working conditions;
[0021] Figure 3 It is a cross-sectional schematic diagram of the utility model under a small fire condition;
[0022] Figure 4 It is a cross-sectional schematic diagram of the utility model under a large fire condition.
[0023] The following are marked in the figure:
[0024] 1. Drainage ditch; 2. Water seal well; 3. UPVC pipe; 4. Fire arrester ring; 5. Liquid level sensor; 6. Fire door. DETAILED DESCRIPTION
[0025] In the description of the present invention, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.
[0027] The following is combined with Figure 1-4The utility model is further described.
[0028] In order to solve the problems existing in the background technology, this application proposes the following technical solutions:
[0029] An underwater integrated pipe gallery drainage ditch over fire protection partition structure, comprising: a drainage ditch 1, a water seal well 2, a UPVC pipe 3, a fire arrester ring 4, a liquid level sensor 5 and a fire door 6;
[0030] The drainage ditch 1 is symmetrically arranged in two sections with the fire door 6 as the boundary, and the water seal well 2 is symmetrically arranged in two sections with the fire door 6 as the boundary.
[0031] Furthermore, the water seal well 2 is connected to the drainage ditch 1. The water seal well 2 is located close to the fire door 6. The depth of the water seal well 2 is greater than the depth of the drainage ditch 1. There is always a certain amount of water in the water seal well 2.
[0032] Furthermore, the UPVC pipe 3 is connected to the two water seal wells 2 , and the installation position of the UPVC pipe 3 is lower than the bottom surface of the drainage ditch 1 .
[0033] Furthermore, the liquid level sensor 5 is fixedly installed in the water seal well 2. The liquid level sensor 5 monitors the water level in the water seal well 2 in real time, and is set to send an alarm signal when the water level in the water seal well 2 suddenly decreases by a certain value in a short period of time.
[0034] Furthermore, the fire-stop ring 4 is installed in the middle section of the UPVC pipe 3 and just below the fire door 6. The fire-stop ring 4 is a plastic pipe fire-stop ring, and the maximum fire-resistance time is selected.
[0035] The two water seal wells 2 in the embodiment can simultaneously perform fire blocking, isolation and smoke prevention from two aspects.
[0036] The water seal well 2 and the fire stop ring 4 in this embodiment can play their respective roles in response to fires of different scales. Under normal circumstances, the water in the water seal well 2 is full, the fire stop ring 4 and the UPVC pipe 3 are also connected, and the waste water can be discharged to another fire protection partition drain ditch 1 in the order of water seal well 2 → UPVC pipe 3 → fire stop ring 4 → water seal well 2. When a local fire occurs, that is, a "small fire", the heat generated by the fire will first evaporate the water in the water seal well 2. When the water in the water seal well 2 drops rapidly in a short time, the liquid level sensor 5 will send a signal to remind the staff, and the staff will operate the fire-fighting equipment to extinguish the fire and perform inspection and maintenance. After the fire is extinguished, the water in the water seal well 2 can be replenished.
[0037] When a fire occurs inside the entire fire compartment, that is, a "big fire" occurs, the amount of water in the water seal well 2 will not be enough to offset the huge heat generated by the fire and will be completely evaporated. At this time, there will be a tendency for the fire to spread to another fire compartment through the UPVC pipe 3. When the UPVC pipe 3 is heated and transferred to the fire-blocking ring 4, the fire-blocking ring 4 will quickly expand due to the heat and crush the UPVC pipe 3, forming a complete blockage. At this time, the liquid level sensor 5 will also send out a fire alarm signal and information such as the location of the fire in time. The staff will promptly operate the fire-fighting ventilation equipment to extinguish the fire, and carry out repair work such as pipeline replacement after the fire is extinguished.
[0038] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.
[0039] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A fire protection partition structure for an underwater integrated pipe gallery drainage ditch, characterized in that: include: A drainage ditch (1), a water seal well (2), a UPVC pipe (3), a fire arrester ring (4), a liquid level sensor (5) and a fire door (6); the drainage ditch (1) is symmetrically arranged in two sections with the fire door (6) as a boundary, and the water seal well (2) is symmetrically arranged in two sections with the fire door (6) as a boundary.
2. The fire protection partition structure of the underwater integrated pipe gallery drainage ditch according to claim 1 is characterized in that: The water seal well (2) is connected to the drainage ditch (1), and the depth of the water seal well (2) is greater than the depth of the drainage ditch (1).
3. The fire protection partition structure of the underwater integrated pipeline gallery drainage ditch according to claim 1 is characterized in that: The UPVC pipe (3) is connected to the two water seal wells (2), and the installation position of the UPVC pipe (3) is lower than the bottom surface of the drainage ditch (1).
4. The fire protection partition structure of the underwater integrated pipeline gallery drainage ditch according to claim 1 is characterized in that: The liquid level sensor (5) is fixedly installed in the water seal well (2).
5. The fire protection partition structure of the underwater integrated pipeline gallery drainage ditch according to claim 1 is characterized in that: The fire arrester ring (4) is installed in the middle section of the UPVC pipe (3) and directly below the fire door (6).
6. The fire protection partition structure of the underwater integrated pipe gallery drainage ditch according to claim 5 is characterized in that: The fire arrester ring (4) is a plastic pipe fire arrester ring.