CN220621933U - Cable tunnel ventilation system - Google Patents
Cable tunnel ventilation system Download PDFInfo
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- CN220621933U CN220621933U CN202321957492.4U CN202321957492U CN220621933U CN 220621933 U CN220621933 U CN 220621933U CN 202321957492 U CN202321957492 U CN 202321957492U CN 220621933 U CN220621933 U CN 220621933U
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- 238000009423 ventilation Methods 0.000 title claims abstract description 68
- 239000004567 concrete Substances 0.000 claims abstract description 42
- 239000000779 smoke Substances 0.000 claims abstract description 32
- 239000011150 reinforced concrete Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000035939 shock Effects 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 241000238631 Hexapoda Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000271566 Aves Species 0.000 description 1
- 241000699670 Mus sp. Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model discloses a cable tunnel ventilation system, which comprises a cable tunnel, wherein the top of the cable tunnel is provided with at least one tunnel air inlet and at least one tunnel air outlet, an air inlet concrete well chamber is arranged above the tunnel air inlet, and an air exhaust concrete well chamber is arranged above the tunnel air outlet; an air inlet pavilion is arranged at the top of the air inlet concrete well chamber; the top of the air exhaust concrete well chamber is provided with an air exhaust pavilion, and a vertical fire-fighting smoke exhaust fan is arranged in the air exhaust pavilion. The ventilation effect in the cable tunnel is improved by adopting a mode of combining natural air inlet and mechanical air exhaust; the air inlet/outlet concrete well chambers and the air inlet/outlet pavilion are arranged above the cable tunnel, so that the structure is compact, and the occupied area is small; a vertical fire-fighting smoke exhaust fan is arranged in the air exhaust booth, so that the air exhaust booth is economical, energy-saving and environment-friendly.
Description
Technical field:
the utility model relates to the technical field of tunnel ventilation, in particular to a cable tunnel ventilation system.
The background technology is as follows:
due to the continuous development of the socialization, the proportion of the power line in the whole power transmission and transformation project is continuously improved by adopting the transmission mode of the power cable, and the cable tunnel as the main channel of the power cable has the characteristics of safety, reliability and easy operation, inspection and management of the line, and the construction proportion is also increasingly greater in the whole country, and the importance is increasing day by day. The cable tunnel accommodates a large number of cables, and typically lays up thirty or more power cables. If ventilation in the cable tunnel is not smooth, on one hand, the air quality cannot be ensured, and the personal safety of overhaulers cannot be ensured; on the other hand, heat generated in the operation process of the cable cannot be timely discharged, so that the temperature in the tunnel can be increased, the current-carrying capacity of the cable is reduced, the service life of the cable is shortened, and a fire disaster can be possibly caused. In order to ensure safe and reliable operation of the power cable in the tunnel, the cable tunnel is required to be provided with a ventilation system.
The cable tunnel usually adopts a ventilation mode of combining natural air inlet and mechanical air exhaust. The conventional cable tunnel ventilation system is arranged in a form shown in fig. 1 and 2, independent air inlet machine systems and independent air exhaust systems are arranged on two sides of a tunnel, the tunnel ventilation system comprises an underground air inlet/exhaust machine room and an underground air inlet/exhaust vertical shaft, the tops of the underground air inlet/exhaust vertical shafts are respectively provided with an on-ground air inlet/exhaust pavilion, and the occupied area is large. In addition, a high-power horizontal fire-fighting smoke exhaust fan is arranged in the air exhaust machine room and used for exhausting air, and accessory equipment matched with the horizontal fan is also arranged in the air exhaust machine room, wherein the accessory equipment comprises a muffler, an air pipe check valve, a full-automatic smoke exhaust fireproof valve, a spring hanger, a round air pipe, hanger angle steel and the like; the equipment greatly increases engineering investment, and the underground exhaust machine room is large in construction difficulty and engineering quantity, and the later operation and maintenance and inspection are time-consuming and labor-consuming.
The utility model comprises the following steps:
the utility model aims to provide a cable tunnel ventilation system with low cost, low construction difficulty and good ventilation effect.
The utility model is implemented by the following technical scheme:
the cable tunnel ventilation system comprises a cable tunnel, wherein the top of the cable tunnel is provided with at least one tunnel air inlet and at least one tunnel air outlet, an air inlet concrete well chamber is arranged above the tunnel air inlet, and an air exhaust concrete well chamber is arranged above the tunnel air outlet; the top of the air inlet concrete well chamber is provided with an air inlet pavilion, the air inlet pavilion comprises an air inlet pavilion main body, the side wall of the air inlet pavilion main body is provided with an air inlet pavilion air inlet, and the air inlet pavilion air inlet is provided with an air inlet pavilion ventilation window; an air inlet pavilion air outlet is formed in the bottom of the air inlet pavilion main body, the air inlet pavilion air outlet is communicated with an air inlet of the air inlet concrete well chamber, and an air outlet of the air inlet concrete well chamber is communicated with the tunnel air inlet; the top of the air exhaust concrete well chamber is provided with an air exhaust pavilion, the air exhaust pavilion comprises an air exhaust pavilion main body, the side wall of the air exhaust pavilion main body is provided with an air exhaust pavilion air outlet, and the air exhaust pavilion air outlet is provided with an air exhaust pavilion ventilating window; a vertical fire-fighting smoke exhaust fan is arranged in the air exhaust booth main body; the tunnel air outlet is communicated with the air inlet of the air exhaust concrete well chamber, and the air outlet of the air exhaust concrete well chamber is communicated with the air inlet of the vertical fire-fighting smoke exhaust fan.
Fresh air enters the air inlet booth main body through the air inlet booth ventilation window, and then passes through the air inlet concrete well chamber and enters the cable tunnel through the tunnel air inlet; under the effect of the vertical fire-fighting smoke exhaust fan, air in the cable tunnel flows towards the direction of the tunnel air outlet and passes through the air exhaust concrete well chamber, is exhausted into the air exhaust booth main body by the vertical fire-fighting smoke exhaust fan, and is then exhausted into the atmosphere by the air exhaust booth ventilation window. The ventilation of the cable tunnel is realized by adopting a mode of combining natural air inlet and mechanical air exhaust.
Preferably, the cable tunnel, the air inlet concrete well chamber, the air inlet booth main body, the air exhaust concrete well chamber and the air exhaust booth main body are all reinforced concrete structures.
Preferably, a plurality of openable and closable fire-proof walls are arranged in the cable tunnel, and divide the cable tunnel into a plurality of ventilated fire-proof areas; each ventilation fireproof area is provided with one tunnel air inlet and one tunnel air outlet; the tunnel air intake sets up and is being close to the one end in ventilation fire prevention district, the tunnel air exit sets up and is being close to the other end in ventilation fire prevention district. In view of fire safety, an openable firewall is arranged in the cable tunnel, and when the firewall is opened, the ventilation efficiency of the cable tunnel is effectively improved through the arrangement of a plurality of tunnel air inlets and tunnel air outlets of the cable tunnel; when the fire wall is closed, ventilation is not smooth in the ventilation fireproof area, so that the position of the end part of each ventilation fireproof area is respectively provided with one tunnel air inlet and one tunnel air outlet, ventilation of each ventilation fireproof area is facilitated, and no dead angle exists in ventilation.
Preferably, the tunnel air inlet and the tunnel air outlet are both provided with protective nets. The protection net can prevent birds, mice and insects, and reduce damage to cables and ventilation systems.
Preferably, a water interception ditch is arranged in the middle of the bottom of the cable tunnel along the extending direction of the cable tunnel; and the two sides of the bottom of the cable tunnel are inclined towards the intercepting ditch at a gradient value of 0.5%. If water is carelessly fed into the cable tunnel, the intercepting ditch is arranged for preventing the cable in the cable tunnel from being soaked and damaged, so that water in the cable tunnel is conveniently collected into the intercepting ditch.
Preferably, the air inlet pavilion ventilation window and the air outlet pavilion ventilation window are rain-proof shutters, and the rain-proof shutters comprise blades and frames; the blades are transversely arranged from top to bottom, and the height of each blade is reduced from inside to outside. The rain-proof shutter can reduce the probability that rainwater, birds and insects enter the air inlet booth main body or the air exhaust booth main body.
Preferably, an air inlet pavilion top cover is arranged at the top of the air inlet pavilion main body; the center of the top cover of the air inlet pavilion is sloped to the periphery with a slope value of 2-5%; the top cover of the air inlet pavilion is of a reinforced concrete structure. The precipitation is convenient to flow down along the top cover of the air inlet pavilion.
Preferably, an exhaust booth top cover is arranged at the top of the exhaust booth main body; the center of the top cover of the exhaust booth is sloped to the periphery with a slope value of 2-5%; the top cover of the exhaust booth is of a reinforced concrete structure. The precipitation is convenient to flow down along the top cover of the exhaust booth.
Preferably, the bottom of the main body of the exhaust booth is provided with a plurality of upright posts; the frame body of the vertical fire-fighting smoke exhaust fan is fixed on the upright post through a bolt structure; a rubber shock pad is arranged between the bottom of the frame body of the vertical fire-fighting smoke exhaust fan and the top of the upright post. The vertical fire-fighting smoke exhaust fan can vibrate when running, under the action of the rubber shock pad, the rigid contact between the vertical fire-fighting smoke exhaust fan and the upright post is changed into flexible contact, and the direct impact force of the vertical fire-fighting smoke exhaust fan on the upright post can be reduced.
Preferably, the upright post is a reinforced concrete structure.
The utility model has the advantages that:
(1) The utility model provides a cable tunnel ventilation system, which adopts a mode of combining natural air inlet and mechanical air exhaust, improves the ventilation effect in a cable tunnel, not only realizes ventilation of the cable tunnel and improves personal safety guarantee of staff in the cable tunnel, but also reduces the temperature in the cable tunnel, ensures smooth heat removal air flow of the cable, increases the current carrying capacity of the cable, prolongs the service life of the cable and reduces the probability of fire occurrence caused by aging of the cable.
(2) The system is provided with the concrete well chambers and the air inlet/outlet pavilion above the cable tunnel, has compact structure and small occupied area, is convenient for the daily maintenance and overhaul of staff, and is clear at a glance when observing the operation condition of the ventilation equipment.
(3) The vertical fire-fighting smoke exhaust fan is arranged in the ground air exhaust pavilion, and on one hand, compared with the horizontal fire-fighting smoke exhaust fan, the vertical fire-fighting smoke exhaust fan has low power and low power consumption; on the other hand, the construction operation surface is on the ground, the hoisting difficulty is avoided, auxiliary equipment such as a muffler, an air pipe check valve, a full-automatic smoke discharging fireproof valve, a spring hanger, a round air pipe, hanger angle steel and the like which are matched with the horizontal fan in the underground exhaust machine room are omitted, the construction difficulty is reduced, and the device is economical, energy-saving and environment-friendly.
Description of the drawings:
in order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic side view of a cable tunnel ventilation system arrangement as described in the background;
FIG. 2 is a schematic top view of a cable tunnel ventilation system arrangement as described in the background;
FIG. 3 is a schematic diagram of a cable tunnel ventilation system of an embodiment;
FIG. 4 is a schematic diagram of an air intake kiosk of a cable tunnel ventilation system of an embodiment;
FIG. 5 is a schematic diagram of an exhaust kiosk of a cable tunnel ventilation system of an embodiment;
fig. 6 is a schematic diagram at a in fig. 5.
The drawings are as follows: 10. a cable tunnel; 11. a firewall; 12. a protective net; 13. a water intercepting ditch; 20. an air inlet concrete well chamber; 30. an air inlet pavilion; 31. an air inlet booth main body; 311. an air inlet pavilion ventilation window; 32. an air inlet pavilion top cover; 40. an exhaust concrete well chamber; 50. an exhaust booth; 51. an exhaust booth body; 511. ventilating window of exhaust booth; 512. a column; 52. top cover of exhaust booth; 53. vertical fire-fighting smoke exhaust fan; 54. rubber shock pad.
The specific embodiment is as follows:
the following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. In the description of the present utility model, it should be noted that the terms "a," "an," "the," and the like, as presented herein, are used for descriptive purposes only and are not to be construed as indicating or implying any particular importance. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
A cable tunnel ventilation system, as shown in figure 3, comprises a cable tunnel 10, wherein a plurality of openable and closable fire-proof walls 11 are arranged in the cable tunnel 10, and the fire-proof walls 11 divide the cable tunnel 10 into a plurality of ventilation fire-proof areas; the top of each ventilation fireproof area is provided with a tunnel air inlet and a tunnel air outlet; the tunnel air inlet is arranged at one end close to the ventilation fireproof area, and the tunnel air outlet is arranged at the other end close to the ventilation fireproof area; the tunnel air inlet and the tunnel air outlet are both provided with a protective net 12. The middle part of the bottom of the cable tunnel 10 is provided with a water intercepting ditch 13 along the extending direction of the cable tunnel 10; the bottom sides of the cable tunnel 10 are sloped toward the intercepting drain 13 with a slope value of 0.5%.
As shown in fig. 4, an air inlet concrete well chamber 20 is arranged above the tunnel air inlet. An air inlet pavilion 30 is arranged at the top of the air inlet concrete well chamber 20, the air inlet pavilion 30 comprises an air inlet pavilion main body 31, an air inlet pavilion air inlet is arranged on the side wall of the air inlet pavilion main body 31, and an air inlet pavilion ventilation window 311 is arranged at the air inlet pavilion air inlet; the air inlet pavilion ventilating window 311 is a rainproof shutter, and the rainproof shutter comprises blades and a frame; the blades are transversely arranged from top to bottom, and the height of each blade is reduced from inside to outside. An air inlet booth top cover 32 is arranged at the top of the air inlet booth main body 31; the top center of the kiosk top cover 32 is sloped around at a slope value of 3%. An air inlet booth air outlet is arranged at the bottom of the air inlet booth main body 31, and is communicated with the air inlet of the air inlet concrete well chamber 20, and the air outlet of the air inlet concrete well chamber 20 is communicated with the tunnel air inlet.
As shown in fig. 5, an exhaust concrete well chamber 40 is arranged above the tunnel air outlet. The top of the air exhaust concrete well chamber 40 is provided with an air exhaust pavilion 50, the air exhaust pavilion 50 comprises an air exhaust pavilion main body 51, the side wall of the air exhaust pavilion main body 51 is provided with an air exhaust pavilion air outlet, and the air exhaust pavilion air outlet is provided with an air exhaust pavilion ventilating window 511; the ventilation window 511 of the air exhaust booth is a rainproof shutter, and the rainproof shutter comprises blades and a frame; the blades are transversely arranged from top to bottom, and the height of each blade is reduced from inside to outside. The top of the air exhaust booth main body 51 is provided with an air exhaust booth top cover 52; the top center of the kiosk top cover 52 is sloped around at a 3% slope value. The bottom of the main body 51 is provided with a plurality of upright posts 512; a vertical fire-fighting smoke exhaust fan 53 is arranged in the air exhaust booth main body 51; as shown in fig. 6, the frame of the vertical fire-fighting smoke extractor 53 is fixed to the upright column 512 by a bolt structure, and a rubber shock pad 54 is provided between the bottom of the frame of the vertical fire-fighting smoke extractor 53 and the top of the upright column 512. The tunnel air outlet is communicated with the air inlet of the air exhaust concrete well chamber 40, and the air outlet of the air exhaust concrete well chamber 40 is communicated with the air inlet of the vertical fire-fighting smoke exhaust fan 53.
The cable tunnel 10, the air inlet concrete well chamber 20, the air inlet pavilion main body 31, the air inlet pavilion top cover 32, the air outlet concrete well chamber 40, the air outlet pavilion main body 51, the air outlet pavilion top cover 52 and the upright column 512 are all reinforced concrete structures.
The working process is as follows:
fresh air enters the air inlet booth main body 31 through the air inlet booth ventilation window 311, then passes through the air inlet concrete well chamber 20 and enters the cable tunnel 10 through the tunnel air inlet; under the action of the vertical fire-fighting smoke exhaust fan 53, air in the cable tunnel 10 flows in the direction of the tunnel air outlet and passes through the air exhaust concrete well chamber 40, is exhausted into the air exhaust booth main body 51 by the vertical fire-fighting smoke exhaust fan 53, and is then exhausted into the atmosphere by the air exhaust booth ventilation window 511. The ventilation of the cable tunnel 10 is achieved by a combination of natural air intake and mechanical air exhaust.
The vertical fire-fighting smoke exhaust fan used in the embodiment is a JSF-630-RS vertical fire-fighting smoke exhaust fan purchased from Zhejiang poly-English fan industry Co., ltd., rotation speed 1450r/min, power 0.3-0.85kW, air quantity 7200-9500m 3 And/h, air pressure 195Pa, compared with the horizontal fire-fighting smoke exhaust fan (HTF-8-I-A horizontal fire-fighting smoke exhaust from Zhejiang poly-English fan industry Co., ltd.) described in the background artFan with rotation speed 1450r/min, power 1.1kW, air volume 3410-4912m 3 And/h, the wind pressure is 750 Pa), the power is smaller, and the power consumption is low.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. The cable tunnel ventilation system comprises a cable tunnel and is characterized in that at least one tunnel air inlet and at least one tunnel air outlet are formed in the top of the cable tunnel, an air inlet concrete well chamber is arranged above the tunnel air inlet, and an air exhaust concrete well chamber is arranged above the tunnel air outlet;
the top of the air inlet concrete well chamber is provided with an air inlet pavilion, the air inlet pavilion comprises an air inlet pavilion main body, the side wall of the air inlet pavilion main body is provided with an air inlet pavilion air inlet, and the air inlet pavilion air inlet is provided with an air inlet pavilion ventilation window; an air inlet pavilion air outlet is formed in the bottom of the air inlet pavilion main body, the air inlet pavilion air outlet is communicated with an air inlet of the air inlet concrete well chamber, and an air outlet of the air inlet concrete well chamber is communicated with the tunnel air inlet;
the top of the air exhaust concrete well chamber is provided with an air exhaust pavilion, the air exhaust pavilion comprises an air exhaust pavilion main body, the side wall of the air exhaust pavilion main body is provided with an air exhaust pavilion air outlet, and the air exhaust pavilion air outlet is provided with an air exhaust pavilion ventilating window; a vertical fire-fighting smoke exhaust fan is arranged in the air exhaust booth main body; the tunnel air outlet is communicated with the air inlet of the air exhaust concrete well chamber, and the air outlet of the air exhaust concrete well chamber is communicated with the air inlet of the vertical fire-fighting smoke exhaust fan.
2. The cable tunnel ventilation system of claim 1, wherein the cable tunnel, the air intake concrete well, the air intake booth body, the air exhaust concrete well, and the air exhaust booth body are all reinforced concrete structures.
3. The cable tunnel ventilation system according to claim 1, wherein a plurality of openable and closable fire walls are arranged in the cable tunnel, and the fire walls divide the cable tunnel into a plurality of ventilation fire-proof areas; each ventilation fireproof area is provided with one tunnel air inlet and one tunnel air outlet; the tunnel air intake sets up and is being close to the one end in ventilation fire prevention district, the tunnel air exit sets up and is being close to the other end in ventilation fire prevention district.
4. A cable tunnel ventilation system according to any of claims 1-3, characterized in that both the tunnel air intake and the tunnel air exhaust are provided with protective screening.
5. The cable tunnel ventilation system according to claim 1, characterized in that a middle part of a bottom of the cable tunnel is provided with a water interception ditch along an extending direction of the cable tunnel; and the two sides of the bottom of the cable tunnel are inclined towards the intercepting ditch at a gradient value of 0.5%.
6. The cable tunnel ventilation system of claim 1, wherein the air intake booth ventilation window and the air exhaust booth ventilation window are both rain-proof louvers comprising vanes and a frame; the blades are transversely arranged from top to bottom, and the height of each blade is reduced from inside to outside.
7. The cable tunnel ventilation system of claim 1, wherein the top of the air intake booth body is provided with an air intake booth top cover; the center of the top cover of the air inlet pavilion is sloped to the periphery with a slope value of 2-5%; the top cover of the air inlet pavilion is of a reinforced concrete structure.
8. The cable tunnel ventilation system of claim 1, wherein the top of the air exhaust booth body is provided with an air exhaust booth top cover; the center of the top cover of the exhaust booth is sloped to the periphery with a slope value of 2-5%; the top cover of the exhaust booth is of a reinforced concrete structure.
9. The cable tunnel ventilation system of claim 1, wherein the bottom of the exhaust booth body is provided with a plurality of posts; the frame body of the vertical fire-fighting smoke exhaust fan is fixed on the upright post through a bolt structure; a rubber shock pad is arranged between the bottom of the frame body of the vertical fire-fighting smoke exhaust fan and the top of the upright post.
10. The cable tunnel ventilation system of claim 9, wherein the posts are reinforced concrete structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321957492.4U CN220621933U (en) | 2023-07-24 | 2023-07-24 | Cable tunnel ventilation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321957492.4U CN220621933U (en) | 2023-07-24 | 2023-07-24 | Cable tunnel ventilation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220621933U true CN220621933U (en) | 2024-03-19 |
Family
ID=90212788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321957492.4U Active CN220621933U (en) | 2023-07-24 | 2023-07-24 | Cable tunnel ventilation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220621933U (en) |
-
2023
- 2023-07-24 CN CN202321957492.4U patent/CN220621933U/en active Active
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