CN116717297A - A ventilation flue gas pipeline structure for cable tunnel - Google Patents
A ventilation flue gas pipeline structure for cable tunnel Download PDFInfo
- Publication number
- CN116717297A CN116717297A CN202310681437.5A CN202310681437A CN116717297A CN 116717297 A CN116717297 A CN 116717297A CN 202310681437 A CN202310681437 A CN 202310681437A CN 116717297 A CN116717297 A CN 116717297A
- Authority
- CN
- China
- Prior art keywords
- prefabricated
- smoke
- pipeline
- cable tunnel
- ventilation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 10
- 239000003546 flue gas Substances 0.000 title claims description 10
- 239000000779 smoke Substances 0.000 claims abstract description 67
- 238000007789 sealing Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 14
- 231100000331 toxic Toxicity 0.000 abstract description 11
- 230000002588 toxic effect Effects 0.000 abstract description 11
- 230000002265 prevention Effects 0.000 description 6
- 238000010079 rubber tapping Methods 0.000 description 3
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
- E21F1/06—Duct connections
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/14—Air partitions; Air locks
- E21F1/145—Air locks
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Ventilation (AREA)
Abstract
The invention relates to a ventilation and smoke exhaust pipeline structure for a cable tunnel, which comprises a plurality of prefabricated pipe sections which are connected in sequence, wherein a prefabricated smoke exhaust pipeline is arranged in each prefabricated pipe section and comprises a plurality of first prefabricated pipelines, second prefabricated pipelines and third prefabricated pipelines are uniformly distributed among the first prefabricated pipelines, the first prefabricated pipelines are used for circulating smoke, the second prefabricated pipelines are used for sucking the smoke, and the third prefabricated pipelines are used for exhausting the smoke. Compared with the prior art, the invention can effectively avoid a large amount of smoke and toxic and harmful gases from gathering in a fireproof interval and prevent the smoke and toxic and harmful gases from spreading to the next fireproof interval.
Description
Technical Field
The invention relates to the technical field of ventilation design of cable tunnels, in particular to a ventilation and smoke exhaust pipeline structure for a cable tunnel.
Background
Along with the acceleration of the urban process, the construction of the power grid is gradually perfected, the electric energy demand is increased increasingly, and related facilities for power transmission must be improved as soon as possible. The application of the cable tunnel realizes the deep development of urban underground space, can slow down the phenomenon of insufficient land resource supply, improve the comprehensive utilization rate of land, and can well meet the increasing power load demands.
A cable tunnel refers to a corridor or tunnel structure for accommodating a large number of cables laid on cable supports. Because the cable tunnel is located underground environment is complicated to its inside has laid high-tension cable, in order to satisfy the fire prevention requirement, every 200 meters needs to set up a fire wall, in case the inside conflagration that breaks out of cable tunnel, then the fire door will self-closing, will produce a large amount of flue gas and poisonous harmful gas in the fire prevention interval this moment, and prevent fire door in case close the back, often need the manual work open again, there is very big potential safety hazard, in addition, after opening preventing fire door, a large amount of flue gas and poisonous harmful gas still can reach next fire prevention interval through preventing fire door, this makes the smog warning in next fire prevention interval send the warning with auto-induction, arouse unnecessary extra loss easily.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a ventilation and smoke exhaust pipeline structure for a cable tunnel, which can prevent a large amount of smoke and toxic and harmful gases from accumulating in a fireproof interval and prevent the smoke and toxic and harmful gases from spreading to the next fireproof interval.
The aim of the invention can be achieved by the following technical scheme: the utility model provides a ventilation and smoke exhaust pipeline structure for cable tunnel, includes a plurality of prefabricated tube coupling that connect gradually, install prefabricated smoke exhaust pipeline in the prefabricated tube coupling, prefabricated smoke exhaust pipeline includes a plurality of first prefabricated pipelines, the equipartition is connected with second prefabricated pipeline and third prefabricated pipeline between a plurality of first prefabricated pipelines, first prefabricated pipeline is used for circulating the flue gas, second prefabricated pipeline is used for inhaling the flue gas, third prefabricated pipeline is used for discharging the flue gas.
Further, the first prefabricated pipeline comprises an inverted trapezoid bottom plate, mounting plates are hinged to two sides of the inverted trapezoid bottom plate, and the mounting plates are fixedly connected with the inner walls of the prefabricated pipe joints.
Further, two sides of the inverted trapezoid bottom plate are hinged with the mounting plate through movable hinges respectively, through holes for mounting expansion bolts are formed in the mounting plate, and rubber gaskets are sleeved on the expansion bolts.
Further, a sealing strip is arranged on the movable hinge.
Further, the second prefabricated pipeline comprises an inverted trapezoid bottom plate, mounting plates are hinged to two sides of the inverted trapezoid bottom plate, the mounting plates are fixedly connected with the inner walls of the prefabricated pipe joints, smoke-proof and fire-proof valves are mounted on the inverted trapezoid bottom plate, and smoke-proof fans are mounted on the smoke-proof and fire-proof valves.
Further, the smoke-proof fire-proof valve includes a plurality of electrically controlled on-off valve flaps.
Further, the third prefabricated pipeline comprises an inverted trapezoid bottom plate, mounting plates are hinged to two sides of the inverted trapezoid bottom plate, the mounting plates are fixedly connected with the inner walls of the prefabricated pipe joints, and a smoke exhaust fan is mounted at one end of an inlet of the third prefabricated pipeline.
Further, the two adjacent first prefabricated pipelines, the first prefabricated pipeline and the second prefabricated pipeline and the first prefabricated pipeline and the third prefabricated pipeline are all connected with each other through connecting plates.
Further, self-tapping screws are mounted on the connecting plates.
Further, the third prefabricated pipeline is installed in a mounting hole formed in the top of the firewall in the fireproof section.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, a plurality of prefabricated pipe sections which are sequentially connected are designed to be used as a cable tunnel main body, and the prefabricated smoke exhaust pipeline is arranged in the prefabricated pipe sections, the prefabricated smoke exhaust pipeline comprises a plurality of first prefabricated pipelines, a second prefabricated pipeline and a third prefabricated pipeline are uniformly distributed among the plurality of first prefabricated pipelines, smoke is circulated by the first prefabricated pipelines, the smoke is sucked by the second prefabricated pipelines, and the smoke is exhausted by the third prefabricated pipelines. Therefore, when a fire disaster occurs, the smoke can be timely sucked into the pipeline to circulate and the cable tunnel is discharged from the pipeline, so that a large amount of smoke and toxic and harmful gases can be prevented from being gathered in a fireproof interval for a long time, and the risk that the smoke spreads to the next fireproof interval is also avoided.
2. The invention designs the first prefabricated pipeline, the second prefabricated pipeline and the third prefabricated pipeline, realizes a spliced prefabricated smoke exhaust pipeline, and can flexibly adjust different collocation connection modes according to actual conditions, thereby being well applicable to different application scenes and having better universality.
3. In the invention, the smoke-proof and fire-proof valve is arranged on the inverted trapezoid bottom plate of the second prefabricated pipeline and consists of a plurality of electric control opening and closing valve sheets, and the smoke-absorbing fan is arranged on the smoke-proof and fire-proof valve, so that the smoke and toxic and harmful gases are effectively ensured to enter the second prefabricated pipeline through the opening/closing of the valve sheets and the operation of the smoke-absorbing fan.
4. In the invention, the smoke exhaust fan is arranged at one end of the inlet of the third prefabricated pipeline, and the smoke and the toxic and harmful gas can be reliably exhausted out of the cable tunnel through the work of the smoke exhaust fan.
5. In the invention, in the first prefabricated pipeline, the second prefabricated pipeline and the third prefabricated pipeline, the two sides of the inverted trapezoid bottom plate are hinged with the mounting plates through the movable hinges respectively, so that the prefabricated pipeline can be reliably and stably connected to the prefabricated pipe joint, in addition, the movable hinges are provided with sealing strips, the tightness in the pipeline is further ensured, and the leakage of smoke is prevented.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a first prefabricated pipe according to the present invention;
FIG. 3 is a schematic view of a second preformed tube according to the present invention;
FIG. 4 is a schematic view of a third preformed tube according to the present invention;
FIG. 5 is a schematic view of the connection installation of the connection plate of the present invention;
the figure indicates: 1. the cable tunnel, 2, prefabricated pipe sections, 3, prefabricated smoke exhaust pipelines, 31, through holes, 32, mounting plates, 33, movable hinges, 34, sealing strips, 35, inverted trapezoid bottom plates, 36, rubber gaskets, 37, expansion bolts, 38, valve plates, 39, smoke exhaust fans, 40, smoke exhaust fans, 41 and connecting plates.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
Examples
As shown in fig. 1, a ventilation and smoke exhaust pipeline suitable for a cable tunnel comprises a prefabricated pipe section 2 and a prefabricated smoke exhaust pipeline 3 arranged in the prefabricated pipe section 2, wherein the cable tunnel 1 is formed by connecting a plurality of prefabricated pipe sections 2. Wherein, prefabricated exhaust duct 3 includes first prefabricated pipeline, second prefabricated pipeline and third prefabricated pipeline, and prefabricated exhaust duct 3 is formed through the prefabricated pipeline connection of different models.
As shown in fig. 2, the first prefabricated pipe includes a through hole 31, a mounting plate 32, a movable hinge 33, a sealing strip 34, an inverted trapezoidal bottom plate 35, a rubber gasket 36, and an expansion bolt 37. The first prefabricated pipeline is a trapezoid pipeline, wherein the mounting plate 32 is connected with the inverted trapezoid bottom plate 35 through the movable hinges 33 so as to adapt to different mounting environments, gaps between the movable hinges are filled through the sealing strips 34, tightness in the pipeline can be ensured, and gas leakage is avoided.
In this embodiment, two through holes 31 are distributed on the mounting plate 32, and a rubber gasket 36 is sleeved on the expansion bolt 37 to play a role of fixing and preventing slipping, and the expansion bolt 37 is driven into the wall surface of the prefabricated pipe section 2 through the through hole 31, so that the first prefabricated pipeline is fixed at the top position of the cable tunnel.
As shown in fig. 3, the second prefabricated pipeline is basically identical to the first prefabricated pipeline in structure, and the difference is that a smoke-proof fire-proof valve 40 is arranged at the bottom of the inverted trapezoid bottom plate 35 of the second prefabricated pipeline, a smoke-absorbing fan 39 is mounted on the smoke-proof fire-proof valve 40, and specifically, mounting bases are arranged at four corners of the smoke-proof fire-proof valve 40 to fix the smoke-absorbing fan 39. The smoke-proof and fire-proof valve 40 is composed of a plurality of electrically controlled opening and closing valve plates 38, and the smoke and toxic and harmful gas are ensured to enter the second prefabricated pipeline through the opening/closing of the valve plates 38 and the operation of the smoke suction fan 39.
As shown in fig. 4, the third prefabricated pipeline is basically identical to the first prefabricated pipeline in structure, except that a smoke exhaust fan 40 is disposed at the left side (i.e., the inlet side) of the inverted trapezoidal bottom plate 35 of the third prefabricated pipeline, and can be fixedly mounted in a welding manner, and the smoke and toxic and harmful gases are exhausted out of the pipeline 35 through the operation of the smoke exhaust fan 40.
The second prefabricated pipeline opens the smoke-proof fire-proof valve 40 after fire disaster, the smoke suction fan 39 starts to work, and the smoke in the cable tunnel 1 is sucked into the second prefabricated pipeline and circulated; the smoke exhaust fan 40 on the third prefabricated pipeline starts to work, and the smoke in the pipeline is discharged out of the pipeline along the radial direction.
In addition, in practical application, the third prefabricated pipeline is fixed in the top of the fire wall of fire prevention interval, installs a plurality of first prefabricated pipelines in whole fire prevention interval, and wherein equidistant the inserting connection has second prefabricated pipeline, third prefabricated pipeline. The adjacent first prefabricated pipeline, the second prefabricated pipeline and the first prefabricated pipeline and the third prefabricated pipeline are all connected through connecting plates 41, and as shown in fig. 5, the connecting plates 41 can be fixed on the two prefabricated smoke exhaust pipelines through self-tapping screws to play a role in connection. The connecting plate 41 can be used for connecting different types of prefabricated pipelines of the prefabricated smoke exhaust pipeline 3, the connecting plate 41 is fixed on two prefabricated pipelines, and the prefabricated pipelines are fixed after self-tapping screws penetrate through holes.
In summary, the ventilation and smoke exhaust pipeline for the cable tunnel provided by the technical scheme avoids a large amount of smoke and toxic and harmful gases from being gathered in a fireproof interval for a long time, and the smoke can be discharged after being sent into the pipeline by timely starting the smoke exhaust fan and the smoke exhaust fan, namely, the smoke generated by a fire disaster and the toxic and harmful gases are discharged out of the cable tunnel through the smoke exhaust pipeline, so that the potential safety hazard of manually opening the fireproof door is solved, and the risk that the smoke continues to spread to the next fireproof interval is avoided. And realize the prefabricated exhaust duct of a concatenation formula, can adjust different collocation modes according to actual conditions in a flexible way, the adaptation scene is more, the commonality is good.
Claims (10)
1. A ventilation and smoke exhaust pipeline structure for cable tunnel, its characterized in that includes a plurality of prefabricated tube coupling (2) that connect gradually, install prefabricated smoke exhaust pipeline (3) in prefabricated tube coupling (2), prefabricated smoke exhaust pipeline (3) are including a plurality of first prefabricated pipelines, the equipartition is connected with second prefabricated pipeline and third prefabricated pipeline between a plurality of first prefabricated pipelines, first prefabricated pipeline is used for circulating the flue gas, second prefabricated pipeline is used for inhaling the flue gas, third prefabricated pipeline is used for discharging the flue gas.
2. A ventilation and smoke evacuation duct structure for a cable tunnel according to claim 1, wherein the first prefabricated duct comprises an inverted trapezoidal bottom plate (35), mounting plates (32) are hinged to two sides of the inverted trapezoidal bottom plate (35), and the mounting plates (32) are fixedly connected with the inner wall of the prefabricated pipe section (2).
3. The ventilation and smoke exhaust pipeline structure for the cable tunnel according to claim 2, wherein two sides of the inverted trapezoid base plate (35) are hinged with the mounting plate (32) through movable hinges (33), through holes (31) for mounting expansion bolts (37) are formed in the mounting plate (32), and rubber gaskets (36) are sleeved on the expansion bolts (37).
4. A ventilation and smoke evacuation duct structure for a cable tunnel according to claim 3, wherein said living hinge (33) is provided with a sealing strip (34).
5. A ventilation and smoke exhaust duct structure for a cable tunnel according to claim 2, characterized in that the second prefabricated duct comprises an inverted trapezoidal bottom plate (35), mounting plates (32) are hinged to two sides of the inverted trapezoidal bottom plate (35), the mounting plates (32) are fixedly connected with the inner wall of the prefabricated pipe joint (2), smoke-proof and fire-proof valves are mounted on the inverted trapezoidal bottom plate (35), and smoke-proof fans (39) are mounted on the smoke-proof and fire-proof valves.
6. A ventilation and smoke evacuation duct structure for a cable tunnel according to claim 5, wherein said smoke and fire damper comprises a plurality of electrically controlled on-off flaps (38).
7. A ventilation and smoke exhaust duct structure for a cable tunnel according to claim 2, characterized in that the third prefabricated duct comprises an inverted trapezoidal bottom plate (35), mounting plates (32) are hinged to two sides of the inverted trapezoidal bottom plate (35), the mounting plates (32) are fixedly connected with the inner wall of the prefabricated pipe joint (2), and a smoke exhaust fan (40) is mounted at one inlet end of the third prefabricated duct.
8. A ventilation and smoke evacuation duct structure for a cable tunnel according to any one of claims 1-7, wherein said adjacent two first prefabricated ducts, between the first prefabricated duct and the second prefabricated duct, between the first prefabricated duct and the third prefabricated duct are all interconnected by means of a connection plate (41).
9. A ventilation and smoke evacuation duct structure for a cable tunnel according to claim 8, wherein said connection plate (41) is provided with screws.
10. The ventilation and smoke exhaust duct structure for a cable tunnel according to claim 1, wherein the third prefabricated duct is installed in an installation hole formed in the top of a firewall in a fireproof section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310681437.5A CN116717297A (en) | 2023-06-09 | 2023-06-09 | A ventilation flue gas pipeline structure for cable tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310681437.5A CN116717297A (en) | 2023-06-09 | 2023-06-09 | A ventilation flue gas pipeline structure for cable tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116717297A true CN116717297A (en) | 2023-09-08 |
Family
ID=87869240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310681437.5A Pending CN116717297A (en) | 2023-06-09 | 2023-06-09 | A ventilation flue gas pipeline structure for cable tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116717297A (en) |
-
2023
- 2023-06-09 CN CN202310681437.5A patent/CN116717297A/en active Pending
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