CN220139211U - Arrangement structure of double-bin cable tunnel - Google Patents
Arrangement structure of double-bin cable tunnel Download PDFInfo
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- CN220139211U CN220139211U CN202321221707.6U CN202321221707U CN220139211U CN 220139211 U CN220139211 U CN 220139211U CN 202321221707 U CN202321221707 U CN 202321221707U CN 220139211 U CN220139211 U CN 220139211U
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- 238000009434 installation Methods 0.000 claims abstract description 50
- 238000007689 inspection Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- 238000010276 construction Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model provides an arrangement structure of a double-bin cable tunnel, which comprises cable layers respectively arranged at two sides of an equipment installation bin, wherein the cable layers are arranged along the extending direction parallel to the cable tunnel, personnel channels are arranged between the cable layers at two sides, and the distance between the axes of the cable layers at two sides is larger than a first preset distance; the cable joint layers are respectively arranged on two sides of the equipment installation bin, the cable joint layers are arranged along the direction parallel to the extending direction of the cable tunnel, and the distance between the centers of the cable joint layers on two sides is larger than a first preset distance. The utility model solves the problem that the requirement of the number of the cable returns cannot be met due to the small space of the cable tunnel through the arrangement structure, and reduces the operation difficulty of maintaining and replacing the underground power equipment.
Description
Technical Field
The embodiment of the utility model relates to the technical field of cable tunnels, in particular to an arrangement structure of a double-bin cable tunnel.
Background
In recent years, as urban population grows, edges expand, and urban power load demands increase. Although the high-voltage and extra-high-voltage overhead lines distributed on the periphery of the early-rise city relieve the power supply requirement of the city, the high-voltage overhead lines influence the appearance of the city, occupy larger space on the ground, have higher requirements on safety distance and cannot be continuously used in the city. Therefore, demand for high voltage power cables of 110 to 500 kv around cities and their associated facilities is increasing, and construction of cable tunnels and the like for laying power cables is being perfected gradually.
The supporting facility cable tunnels of the power cable are built underground, so that the construction difficulty is high, the construction damage to the pavement, the upper green belt and other buildings is large, the excavation area is large, and the construction cost is high, so that the cable tunnels are generally required to be built into the dimensions suitable for the requirements of the current period and the long-term laying in order to reduce the economic loss, the basic laying requirements of the cable are met, and the safe and stable operation of the cable is ensured. Meanwhile, the laying requirements of the power cable are higher, and the laying requirements of the cable with 110kV and 330kV voltage levels are different. Thus, there is an urgent need for a dual-bin cable tunnel for laying 330 voltage classes.
The cable tunnel constructed by the open cut method is mostly used for small-section tunnels of 110kV cable grades, and occupies small underground space, but the space in the cable tunnel under the section is smaller, the number of cable laying returns is smaller, and the working space of construction and operation staff is smaller. But the urban underground power grid is expanded rapidly, the voltage level is gradually increased, and the small-section tunnel can not meet the cable laying and even power supply requirements. For cables with voltage levels of 330kV and above, the diameter of the cable is larger, and a joint layer special for placing joints is needed to be arranged, so that the number of cable laying returns and the space in a tunnel are greatly limited.
Disclosure of Invention
The utility model provides an arrangement structure of a double-bin cable tunnel, which aims to solve the problem that a cable tunnel constructed by an open cut method in the prior art cannot meet the power supply requirement of high voltage and the problem of power facility transformation, and comprises the following steps:
the cable layers are respectively arranged at two sides of the equipment installation bin, the cable layers are arranged along the extending direction parallel to the cable tunnel, a personnel channel is arranged between the cable layers at two sides, and the distance between the axes of the cable layers at two sides is larger than a first preset distance;
the cable joint layers are respectively arranged on two sides of the equipment installation bin, the cable joint layers are arranged along the direction parallel to the extending direction of the cable tunnel, and the distance between the centers of the cable joint layers on two sides is larger than a first preset distance.
Preferably, the cable layer includes:
the cable layer cross arm group is fixed on the side wall of the equipment installation bin;
the cable group is arranged on the cable layer cross arm group;
the cable joint layer includes:
cable joint layer cross arm groups fixed on two sides of the equipment installation bin;
and the cable joint group is arranged on the cable joint layer cross arm group.
Preferably, the cable layer cross arm group comprises a first cable cross arm and a second cable cross arm which are sequentially arranged on the inner side wall of the equipment installation bin along the vertical direction;
the cable set includes:
a first cable disposed on the first cable cross arm;
and the second cable is arranged on the second cable cross arm.
Preferably, the cable joint layer cross arm group is arranged between the first cable cross arm and the second cable cross arm.
Preferably, the arrangement structure further comprises weak current layers respectively arranged at two sides of the inside of the equipment installation bin;
the weak current layer includes:
the weak current cross arm group is arranged on the side wall of the equipment installation bin;
and the weak current groove box sets are respectively arranged above the weak point cross arm sets.
Preferably, the distance between the two weak point groove box groups located on the opposite side walls is larger than a first preset distance, the distance from the second weak current cross arm to the third cable cross arm is larger than a second preset distance, and the first preset distance is larger than the second preset distance.
Preferably, the arrangement structure further comprises drainage ditches arranged at the bottom ends of two sides of the inside of the equipment installation bin.
Preferably, the arrangement further comprises:
the inspection robot is in sliding connection with the top end inside the equipment installation bin;
the dry powder fire extinguishers are arranged at the top end inside the equipment installation bin and are uniformly distributed along the extending direction parallel to the cable tunnel;
the inspection robot is used for acquiring real-time video images in the equipment installation bin.
Preferably, the arrangement structure further comprises a plurality of temperature sensors arranged at the top end inside the equipment installation bin, and the temperature sensors are uniformly distributed along the extending direction parallel to the cable tunnel;
the temperature sensor is used for acquiring the temperature in the equipment installation bin.
The utility model provides an arrangement structure of a double-bin cable tunnel, which comprises cable layers respectively arranged at two sides of an equipment installation bin, wherein the cable layers are arranged along the extending direction parallel to the cable tunnel, personnel channels are arranged between the cable layers at two sides, and the distance between the axes of the cable layers at two sides is larger than a first preset distance; the cable joint layers are respectively arranged on two sides of the equipment installation bin, the cable joint layers are arranged along the direction parallel to the extending direction of the cable tunnel, and the distance between the centers of the cable joint layers on two sides is larger than a first preset distance. The utility model solves the problem that the requirement of the number of the cable returns cannot be met due to the small space of the cable tunnel through the arrangement structure, and reduces the operation difficulty of maintaining and replacing the underground power equipment.
Drawings
In order to more clearly illustrate the technical solution of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a front cross-sectional view of an arrangement of a dual-compartment cable tunnel of the present utility model;
FIG. 2 is a front cross-sectional view of one cable tunnel arrangement in a dual-compartment cable tunnel arrangement of the present utility model;
FIG. 3 is a split view of a cable set in the arrangement of a dual-bin cable tunnel of the present utility model;
FIG. 4 is a split view of a cable layer cross arm assembly in the arrangement of a dual-bin cable tunnel of the present utility model;
FIG. 5 is a split view of cable joint layers in a dual-bin cable tunnel arrangement according to the present utility model;
fig. 6 is a split view of a weak current layer in the arrangement structure of the double-cabin cable tunnel of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As can be seen from fig. 1, the present embodiment provides a front view cross-section of an arrangement structure of a dual-bin cable tunnel, where it is to be noted that, the arrangement structure provided in the present embodiment is disposed in two equipment installation bins inside the cable tunnel, and the two equipment installation bins are disposed adjacently, unlike a conventional single-bin cable tunnel, the arrangement structure and the dual-bin cable tunnel with the same provided in the present embodiment implement a problem that if a return cable in one side bin fails during operation, another return cable in the other side bin is not affected, thus greatly increasing the reliability of the cable operation and guaranteeing the power transmission stability of the power grid.
The arrangement comprises:
the cable layer 1 that sets up respectively the equipment erection bin both sides, cable layer 1 is along the parallel cable tunnel extending direction sets up, is equipped with personnel passageway between the cable layer 1 of both sides, and the distance between the cable layer 1 axle center of both sides is greater than first preset interval, specifically, in this embodiment, cable layer 1 is used for settling the underground cable, through settle cable layer 1 in equipment erection bin both sides can be by a wide margin promote the area of laying of cable to satisfy the demand of higher voltage.
The cable joint layer 2 that sets up respectively in equipment installation storehouse both sides, cable joint layer 2 is along the parallel cable tunnel extending direction sets up, and the distance between the center is greater than first preset interval in the cable joint layer 2 of both sides, and is specific in this embodiment, sets up in every solitary bin cable joint layer 2 ensures that high voltage class cable has comparatively independent space, ensures the safe and stable operation of cable, and satisfies the horizontal snakelike laying of cable.
As can be seen with reference to fig. 3, 4 and 5, further, in some embodiments, the cable layer 1 comprises:
a cable layer cross arm group 11 fixed on the side wall of the equipment installation bin;
a cable group 12 disposed above the cable layer crossarm group 11;
specifically, in this embodiment, the cable layer cross arm groups 11 are disposed in each independent bin, so that the cables are prevented from being directly contacted with the ground, corrosion of the cables is reduced, and the service life of the whole electric power facility is prolonged.
The specific structures of the cable layer cross arm group 11 and the cable group 12 are as follows:
the cable layer cross arm group 11 comprises a first cable cross arm 111 and a second cable cross arm 112 which are sequentially arranged on the inner side wall of the equipment installation bin along the vertical direction;
the cable set 12 includes:
a first cable 121 disposed above the first cable crossarm 111;
a second cable 122 disposed above the second cable cross arm 112.
Specifically, in this embodiment, there are four cable-installable positions in a single compartment, i.e., the overall dual-compartment cable tunnel can accommodate 8-pass cables, with a significant increase in the number of cable installations compared to existing underground cable-installation compartments.
It should be noted that, in this embodiment, the cable is a cable with a voltage level of 330kV or above, and the voltage level of the cable may be adjusted according to different requirements.
The cable joint layer 2 includes:
cable joint layer cross arm groups 21 fixed on both sides of the equipment installation bin;
and a cable joint group 22 disposed above the cable joint layer cross arm group 21.
Specifically, in this embodiment, the cable joint layer cross arm groups 21 are disposed in each independent bin, so that the cable joints are prevented from being directly contacted with the ground, corrosion of the cables is further reduced, and the service life of the whole electric power facility is prolonged.
Wherein, the cable connector group 22 is arranged to comprise 4-time 330kV and above voltage class cable connectors, and the voltage class of the cable connectors can be adjusted according to different requirements.
The cable joint layer cross arm group 21 is disposed between the first cable cross arm 111 and the second cable cross arm 112, and in such an arrangement structure, connection of cables is facilitated.
As can be further seen with reference to fig. 6, in some embodiments, the arrangement further comprises weak current layers 3 disposed on either side of the interior of the device mounting bin;
the weak current layer 3 includes:
a weak current cross arm group 31 arranged on the side wall of the equipment installation bin;
and a weak current slot box group 32 arranged above the weak current cross arm group 31.
Specifically, in this embodiment, 8 layers of weak current groove boxes can be laid in the cable tunnel space in the double-cabin, the electric arrangement in the tunnel complies with the principle that the low voltage class is up and the high voltage class is down, and the cables with different voltage classes are laid on different sides, so that the weak current groove box group 32 is laid on the highest layer in the independent sector of the tunnel, the voltage class cable layer 1 and the cable joint layer 2 with 330kV and above below are arranged, the independent space of the high voltage class cable is ensured, and the safe and stable operation of the cable is ensured.
It should be noted that, the distance between two weak point groove box sets 32 located on opposite side walls is greater than a first preset distance, the distance from the second weak current cross arm 312 to the third cable cross arm 113 is greater than a second preset distance, the first preset distance is greater than the second preset distance, specifically, in this embodiment, through such a design, the cable tunnel space in the double bins meets the unimpeded operation of operators, facilitates the activities and the later operation and maintenance of the constructors, and meets the specification requirements.
The tunnel is divided into two independent 3m multiplied by 3m tunnels by adopting left and right type bin division arrangement, the thickness of a vertical plate of a vertical division space is 300mm, the influence of mutual interference is avoided, and the limited space is fully utilized.
As can be seen from fig. 2, further, in some embodiments, the arrangement structure further comprises drainage ditches 4 arranged at the bottom ends of two sides of the interior of the installation bin, specifically, in this embodiment, by arranging the drainage ditches 4 at the bottom in the bin, the problem that the cable is wet or corroded due to rainwater and condensed water is avoided.
Further, in some embodiments, the arrangement further comprises:
the inspection robot 5 is in sliding connection with the top end inside the equipment installation bin;
the dry powder fire extinguishers 6 are arranged at the top end inside the equipment installation bin, and the dry powder fire extinguishers 6 are uniformly distributed along the extending direction parallel to the cable tunnel;
the inspection robot 5 is used for acquiring real-time video images in the equipment installation bin.
Specifically, in this embodiment, the inspection robot 5 inspects the cable tunnel through the guide rail laid at the top end inside the equipment installation bin, and obtains the real-time video image in the equipment installation bin, so as to monitor the condition of the real-time cable tunnel in real time, and the dry powder fire extinguisher 6 can quickly solve the problem of cable fire.
Further, in some embodiments, the arrangement structure further comprises a plurality of temperature sensors 7 arranged at the top end inside the equipment installation bin, and the temperature sensors 7 are uniformly distributed along the extending direction parallel to the cable tunnel;
the temperature sensor 7 is used for acquiring the temperature in the equipment installation bin.
Specifically, in this embodiment, the temperature sensor 7 is used to obtain the temperature in the installation cabin of the equipment, and the temperature sensor 7 is connected with the dry powder fire extinguisher 6 in a communication manner, so as to achieve the technical effect of timely extinguishing the fire which is not found by the inspection robot 5.
The reserved height among the layers in the arrangement structure in the embodiment meets the requirement of vertical serpentine laying of the cable, effectively absorbs the length change of the cable line caused by expansion with heat and contraction with cold, prevents mechanical stress damage of the cable joint and the terminal, and ensures safe and stable operation of the cable.
Claims (9)
1. An arrangement structure of double-bin cable tunnel, its characterized in that, arrangement structure sets up respectively in two equipment installation storehouse inside the cable tunnel, and two equipment installation storehouse are adjacent to be set up, arrangement structure includes:
the cable layers (1) are respectively arranged at two sides of the equipment installation bin, the cable layers (1) are arranged along the extending direction parallel to the cable tunnel, a personnel channel is arranged between the cable layers (1) at two sides, and the distance between the axes of the cable layers (1) at two sides is larger than a first preset distance;
the cable joint layers (2) are respectively arranged on two sides of the equipment installation bin, the cable joint layers (2) are arranged along the extending direction of the cable tunnel in parallel, and the distance between the axes of the cable joint layers (2) on two sides is larger than the first preset distance.
2. Arrangement of a double-compartment cable tunnel according to claim 1, characterized in that the cable layer (1) comprises:
a cable layer cross arm group (11) fixed on the side wall of the equipment installation bin;
a cable set (12) disposed above the cable layer cross arm set (11);
the cable joint layer (2) comprises:
cable joint layer cross arm groups (21) fixed on two sides of the equipment installation bin;
and the cable joint group (22) is arranged above the cable joint layer cross arm group (21).
3. The arrangement structure of a double-cabin cable tunnel according to claim 2, characterized in that the cable layer cross arm group (11) comprises a first cable cross arm (111) and a second cable cross arm (112) which are sequentially arranged on the inner side wall of the equipment installation cabin in the vertical direction;
the cable set (12) comprises:
a first cable (121) disposed above the first cable crossarm (111);
and a second cable (122) disposed above the second cable crossarm (112).
4. A double-compartment cable tunnel arrangement according to claim 3, characterized in that the cable joint layer cross arm group (21) is arranged between the first cable cross arm (111) and the second cable cross arm (112).
5. The arrangement structure of a double-cabin cable tunnel according to claim 4, characterized in that the arrangement structure further comprises weak current layers (3) respectively provided on both sides inside the equipment installation cabin;
the weak current layer (3) comprises:
a weak current cross arm group (31) arranged on the side wall of the equipment installation bin;
and the weak current slot box group (32) is arranged above the weak current cross arm group (31).
6. The arrangement of a double-compartment cable tunnel according to claim 5, characterized in that the distance between two of the weak point box sets (32) located at opposite side walls is larger than a first preset distance, the distance from the second weak current cross arm (312) to the third cable cross arm (113) is larger than a second preset distance, and the first preset distance is larger than the second preset distance.
7. The arrangement structure of the double-cabin cable tunnel according to claim 1, further comprising drainage ditches (4) provided at both side bottom ends inside the equipment installation cabin.
8. The arrangement of a dual-compartment cable tunnel of claim 7, further comprising:
the inspection robot (5) is in sliding connection with the top end inside the equipment installation bin;
the dry powder fire extinguishers (6) are arranged at the top end inside the equipment installation bin, and the dry powder fire extinguishers (6) are uniformly distributed along the extending direction parallel to the cable tunnel;
the inspection robot (5) is used for acquiring real-time video images in the equipment installation bin.
9. The arrangement structure of the double-cabin cable tunnel according to claim 8, further comprising a plurality of temperature sensors (7) arranged at the top end inside the equipment installation cabin, wherein the temperature sensors (7) are uniformly distributed along the extending direction of the cable tunnel;
the temperature sensor (7) is used for acquiring the temperature in the equipment installation bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321221707.6U CN220139211U (en) | 2023-05-19 | 2023-05-19 | Arrangement structure of double-bin cable tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321221707.6U CN220139211U (en) | 2023-05-19 | 2023-05-19 | Arrangement structure of double-bin cable tunnel |
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| Publication Number | Publication Date |
|---|---|
| CN220139211U true CN220139211U (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321221707.6U Active CN220139211U (en) | 2023-05-19 | 2023-05-19 | Arrangement structure of double-bin cable tunnel |
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| Country | Link |
|---|---|
| CN (1) | CN220139211U (en) |
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2023
- 2023-05-19 CN CN202321221707.6U patent/CN220139211U/en active Active
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