CN210490424U - From integration cable tunnel of taking ventilation and smoke exhaust pipe - Google Patents
From integration cable tunnel of taking ventilation and smoke exhaust pipe Download PDFInfo
- Publication number
- CN210490424U CN210490424U CN201921512610.4U CN201921512610U CN210490424U CN 210490424 U CN210490424 U CN 210490424U CN 201921512610 U CN201921512610 U CN 201921512610U CN 210490424 U CN210490424 U CN 210490424U
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- prefabricated
- galvanized steel
- pipe
- air channel
- ventilation
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Abstract
An integrated cable tunnel with ventilation and smoke exhaust pipelines comprises a plurality of first pipe sections and one or more second pipe sections; a prefabricated air channel I is arranged in the first pipe joint, the prefabricated air channel I comprises a galvanized steel sheet, a prefabricated air channel II is arranged in the second pipe joint, the prefabricated air channel II comprises a galvanized steel sheet, a rectangular opening is formed above the galvanized steel sheet of the prefabricated air channel II, a full-automatic smoke-proof fire-proof valve is installed at the rectangular opening, and a louver air port is fixed below the full-automatic smoke-proof fire-proof valve; the first pipe joints are connected with each other and the first pipe joints and the second pipe joints through flanges at the end parts of the galvanized steel sheets. Compared with the prior art, the utility model provides a install the prefabricated wind channel in the prefabricated tube coupling in tunnel in advance, be applicable to the long distance underground cable tunnel that shield structure/push pipe method laid, guaranteed whole cable tunnel system ventilation and smoke exhaust effect to simplify the complexity of tunnel ventilation smoke exhaust system design and construction, reduce maintenance personnel work load.
Description
Technical Field
The utility model relates to a from integration cable tunnel of taking ventilation and exhaust pipe concurrently belongs to cable tunnel technical field.
Background
Along with the construction of the power grid and the proposal and development of the concept of the urban underground comprehensive pipe gallery in China, the construction quantity of the long-distance cable tunnels is correspondingly increased. When the laying conditions are limited, or on the premise of avoiding great influence on the road surface, the cable tunnel needs to be laid in the modes of pipe jacking, shield tunneling and the like, and the laying modes are widely applied to the construction of the cable tunnel. Due to the fact that the tunnel is buried too deeply, the surrounding underground environment is complex, and the construction cost is high, the ventilation shafts in the corresponding sections cannot be frequently arranged according to the length of the fireproof subarea, and the distance between the adjacent ventilation shafts is far beyond the range of 200 meters required by the fireproof distance. The ventilation and smoke exhaust of such areas need to be realized by specially arranging a ventilation and smoke exhaust pipeline connected with an air shaft, so that the residual heat in the tunnel can be timely removed and the fire protection requirement can be guaranteed. However, the ventilation and smoke exhaust pipeline of the tunnel system is complex in design, and corresponding construction and maintenance are also very complex, so that the simplification of the ventilation and smoke exhaust design is very important, and the design is simplified through the integration of the ventilation and smoke exhaust pipeline and the prefabricated pipe joints, so that the potential failure rate of the system is reduced, and the workload of construction and maintenance personnel is correspondingly reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a from integrated cable tunnel of taking ventilation and exhaust pipe concurrently.
The technical scheme of the utility model specifically does:
an integrated cable tunnel with ventilation and smoke exhaust pipelines comprises a plurality of first pipe sections and one or more second pipe sections; the first pipe joint comprises a prefabricated pipe joint and a prefabricated air channel I arranged in the prefabricated pipe joint, the prefabricated air channel I comprises a galvanized steel plate, and the end part of the galvanized steel plate is provided with a flange; the second pipe joint comprises a prefabricated pipe joint and a prefabricated air channel II arranged in the prefabricated pipe joint, the prefabricated air channel II comprises a galvanized steel plate, the end part of the galvanized steel plate is provided with a flange, a rectangular opening is arranged above the galvanized steel plate of the prefabricated air channel II, a full-automatic smoke-proof fire-proof valve is arranged at the rectangular opening, and a shutter air port is fixed below the full-automatic smoke-proof fire-proof valve; the first pipe joints are connected with each other and the first pipe joints and the second pipe joints through flange bolts at the end parts of the galvanized steel sheets.
The side wall of the galvanized steel sheet is provided with a rubber gasket, bolt holes are formed in two ends of the side wall, and the side wall steel sheet of the galvanized steel sheet is fixed with the side wall of the inner cavity of the prefabricated pipe joint through expansion bolts.
And the side wall steel plate of the galvanized steel plate is welded and connected with the inner cavity side wall of the shield prefabricated pipe section.
Compared with the prior art, the beneficial effects of the utility model are that: to the complicated condition of air duct system design construction in the cable tunnel under shield structure method or the push pipe method laying condition, the utility model provides a install the prefabricated wind channel in the prefabricated coupling in tunnel in advance, be applicable to the long distance underground cable tunnel that shield structure/push pipe method laid, guaranteed whole cable tunnel system ventilation and smoke exhaust effect to simplify the complexity of tunnel ventilation smoke exhaust system design construction, reduce maintenance personnel work load.
Drawings
FIG. 1 is a schematic view of a prefabricated pipe section.
Fig. 2 is the overall assembly structure diagram of the present invention.
Fig. 3 is a perspective view of a first pipe section.
Fig. 4 is a perspective view of a second pipe section.
Fig. 5 is a schematic view of the structure of the internal air duct of the first pipe section.
Fig. 6 is an exploded view of the internal air duct structure of the second pipe section.
In the attached figure, 1 prefabricated pipe joint, 2 galvanized steel plates, 3 rubber gaskets, 4 expansion bolts, 5 flanges, 6 full-automatic smoke-proof and fire-proof valves and 7 shutter air ports are arranged.
Detailed Description
An integrated cable tunnel with ventilation and smoke exhaust pipelines comprises a plurality of first pipe sections and one or more second pipe sections; first tube coupling includes prefabricated tube coupling 1 and installs prefabricated wind channel I in prefabricated tube coupling 1, prefabricated tube coupling 1 contains the structure of lateral wall for the cavity, prefabricated wind channel I includes galvanized steel sheet 2, galvanized steel sheet 2's cross section is U type structure, and 2 tip of galvanized steel sheet are flange 5. The second pipe joint comprises a prefabricated pipe joint 1 and a prefabricated air channel II arranged in the prefabricated pipe joint 1, the prefabricated air channel II comprises a galvanized steel plate 2, and the end part of the galvanized steel plate 2 is provided with a flange 5; a rectangular opening is formed in the upper portion of the galvanized steel plate 2 of the prefabricated air duct II, a full-automatic smoke-proof fire-proof valve 6 is installed at the rectangular opening, and a louver air opening 7 is fixed below the full-automatic smoke-proof fire-proof valve 6. It should be noted that the first pipe section and the second pipe section are different in that: the galvanized plate of the prefabricated air duct II is provided with an opening and is provided with a louver air opening 7 and a full-automatic smoke-proof fire-proof valve 6, while the galvanized plate of the prefabricated air duct I is not provided with the opening.
In the connection relation, the first pipe joint can be connected with the first pipe joint and also can be connected with the second pipe joint in a mode of being connected through a flange 5 bolt at the end part of the galvanized steel plate 2.
Under the condition of laying the jacking pipe, install rubber gasket 3 on galvanized steel sheet 2's the U type structure lateral wall, the lateral wall both ends are equipped with the bolt hole, and galvanized steel sheet 2's lateral wall steel sheet passes through expansion bolts 4 and is fixed with the inner chamber lateral wall of prefabricated tube coupling 1, fixes galvanized steel sheet 2 on the inner chamber lateral wall of prefabricated tube coupling 1 through expansion bolts 4, and presss from both sides rubber gasket 3 in the middle of galvanized steel sheet 2 and prefabricated tube coupling 1 and can play sealed effect.
And under the condition of laying by the shield method, the side wall steel plate of the galvanized steel plate 2 is welded and connected with the side wall of the inner cavity of the prefabricated pipe joint 1.
The number of the first pipe joints and the number of the second pipe joints are N in total, the number of the second pipe joints is m, the number of the first pipe joints is N, N is the difference between N and m, wherein m can be obtained by calculating the maximum value of the ventilation value and the smoke discharge value in the fireproof subarea and the rated air quantity of the louver air opening 7 according to the total air quantity = m × the rated air quantity of the louver air opening, and the value of m can be obtained by dividing the total air quantity by the rated air quantity of the louver air opening.
After the installation is finished by a pipe jacking method or a shield method, the first pipe joint is connected with the first pipe joint and the second pipe joint by flanges, and the tightness of the pipeline is checked. Because cable tunnel is formed by a plurality of first tube joints, one or more second tube joints built-up connection in same fire prevention subregion, like this when the integrated cable tunnel who takes ventilation and smoke exhaust pipe from the area lays and accomplishes the back, every fire prevention subregion should have at least one ventilation and smoke exhaust's full-automatic smoke protection fire damper 6 and tripe wind gap 7.
The full-automatic smoke-proof and fire-proof valve 6 is opened at ordinary times, the ventilation system in the tunnel normally operates, the waste heat of the cable in the tunnel is discharged through the louver air opening 7, and the normal hot and humid environment in the tunnel is maintained; when a fire disaster happens, the full-automatic smoke-proof fire-proof valve 6 is automatically closed, so that the fire disaster is prevented from spreading through the louver air opening 7; after the fire disaster is over, the full-automatic smoke-proof fire-proof valve 6 is opened remotely, the tunnel smoke exhaust system is started, and smoke in the tunnel is exhausted through the louver air opening 7.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the general inventive concept, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.
Claims (3)
1. The utility model provides a from integration cable tunnel of taking ventilation and smoke exhaust pipe which characterized in that:
comprises a plurality of first pipe sections and one or more second pipe sections;
the first pipe joint comprises a prefabricated pipe joint (1) and a prefabricated air channel I arranged in the prefabricated pipe joint (1), the prefabricated air channel I comprises a galvanized steel plate (2), and the end part of the galvanized steel plate (2) is provided with a flange (5);
the second pipe joint comprises a prefabricated pipe joint (1) and a prefabricated air channel II arranged in the prefabricated pipe joint (1), the prefabricated air channel II comprises a galvanized steel plate (2), the end part of the galvanized steel plate (2) is provided with a flange (5), a rectangular opening is formed above the galvanized steel plate (2) of the prefabricated air channel II, a full-automatic smoke-proof fire-proof valve (6) is installed at the rectangular opening, and a louver air opening (7) is fixed below the full-automatic smoke-proof fire-proof valve (6);
the first pipe joints are mutually connected and connected with the second pipe joints through the bolts of the flanges (5) at the end parts of the galvanized steel sheets (2).
2. The integrated cable tunnel with the ventilation and smoke exhaust pipeline as claimed in claim 1, wherein: rubber pad (3) are installed to galvanized steel sheet (2) lateral wall, the lateral wall both ends are equipped with the bolt hole, and the lateral wall steel sheet of galvanized steel sheet (2) passes through expansion bolts (4) and fixes with the inner chamber lateral wall of prefabricated tube coupling (1).
3. The integrated cable tunnel with the ventilation and smoke exhaust pipeline as claimed in claim 1, wherein: the side wall steel plate of the galvanized steel plate (2) is welded with the side wall of the inner cavity of the shield prefabricated pipe joint (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921512610.4U CN210490424U (en) | 2019-09-11 | 2019-09-11 | From integration cable tunnel of taking ventilation and smoke exhaust pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921512610.4U CN210490424U (en) | 2019-09-11 | 2019-09-11 | From integration cable tunnel of taking ventilation and smoke exhaust pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210490424U true CN210490424U (en) | 2020-05-08 |
Family
ID=70539842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921512610.4U Expired - Fee Related CN210490424U (en) | 2019-09-11 | 2019-09-11 | From integration cable tunnel of taking ventilation and smoke exhaust pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210490424U (en) |
-
2019
- 2019-09-11 CN CN201921512610.4U patent/CN210490424U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200508 |