CN110601121A - Double-layer visual fireproof cable trench - Google Patents
Double-layer visual fireproof cable trench Download PDFInfo
- Publication number
- CN110601121A CN110601121A CN201910910860.1A CN201910910860A CN110601121A CN 110601121 A CN110601121 A CN 110601121A CN 201910910860 A CN201910910860 A CN 201910910860A CN 110601121 A CN110601121 A CN 110601121A
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- cable
- layer
- pit
- trench
- cable trench
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Installation Of Indoor Wiring (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a double-layer visual fireproof cable trench, and relates to the technical field of electric power facilities. The double-deck visual fire prevention cable pit include the cable pit, the cable pit pass through the baffle will upper cable pit and lower floor's cable pit are cut apart into to the cable pit, the upper end of upper cable pit is provided with upper cable pit apron. The lateral wall of upper cable pit and lower floor's cable pit on be provided with cable support respectively, be located the cable support of upper cable pit is used for bearing power cable, and the cable support that is located lower floor's cable pit is used for bearing control cable. The middle part of baffle is provided with visual apron, visual apron adopt fire prevention glass to make and form. The power cable and the control cable are clearly partitioned in the cable trench, the cables are arranged in an upper layer and a lower layer according to the standard requirements, the cutting and the installation of a field fireproof partition plate are omitted, and the fireproof requirements can be met by utilizing the structure of the cable trench.
Description
Technical Field
The invention relates to the technical field of electric power facilities, in particular to a double-layer visual fireproof cable trench.
Background
At present, most of cable ditches used in domestic transformer substations are single-channel cable ditches, and internal cable supports can be arranged in layers and in side-by-side mode according to the size of the cable ditches. Due to the fact that the power cable generates heat due to large through-flow current, the power cable and the control cable are mixed and laid, the ignition problem of the power cable on fire is caused, the control system of the whole transformer substation loses power and control signals, and the accident is enlarged. For this purpose, fire protection is provided between the control cable and the power cable in the same channel.
The power cable is laid in a fire-resistant cable trough box or on different layers of the same side bracket or on two sides of the same channel, but fire-proof partition plates are arranged between layers and between two sides, and the fire-resistant limit of the fire-proof partition plates is not lower than 2 h. As the fireproof partition plate needs to be cut and installed on site, the installation process is rough, and the gap between the plates is large. For the cable trench with higher fireproof performance requirement, the target fireproof performance is difficult to achieve after field installation.
In addition, fire barriers are not easy to install and patrol. Because the inside asbestos structure that is mostly of fire barrier, the mounting hole dismouting many times of being not convenient for, unable used repeatedly. Therefore, after the installation, the cable is of a totally-enclosed structure, the fireproof plate is inconvenient to disassemble and assemble, and the daily cable trench patrol is not facilitated. And during the extension, the original fireproof partition plate needs to be dismantled and purchased again, and the reuse rate is low.
Disclosure of Invention
Aiming at the problems, the invention provides a double-layer visual fireproof cable trench, which definitely divides a power cable and a control cable into regions, arranges the cables in an upper layer and a lower layer according to the standard requirements, cancels the cutting and installation of a field fireproof clapboard, and can achieve the fireproof requirement by utilizing the structure of the cable trench.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a double-layer visual fireproof cable trench comprises a cable trench, wherein the cable trench is divided into an upper-layer cable trench and a lower-layer cable trench by a partition plate, and an upper-layer cable trench cover plate is arranged at the upper end of the upper-layer cable trench;
the lateral wall of upper cable pit and lower floor's cable pit on be provided with cable support respectively, be located the cable support of upper cable pit is used for bearing power cable, and the cable support that is located lower floor's cable pit is used for bearing control cable.
Further, the middle part of baffle is provided with visual apron.
Furthermore, the visual cover plate is made of fireproof glass.
Further, the cable support include with cable pit lateral wall fixed connection's stand, the stand on be provided with a plurality of bracket perpendicularly, be located the stand of the cable support of upper cable pit and only be provided with a bracket, the equipartition is provided with a plurality of brackets on the stand of the cable support of the cable pit of lower floor.
Furthermore, one end of the bracket is rotatably connected with the upright post through a hinge.
Further, the hinged end of the bracket is provided with a groove, the side surface of the groove, which is far away from the hinged end of the bracket, is a plane perpendicular to the bracket, and when the bracket and the upright post are in a perpendicular state, the side surface of the groove, which is far away from the hinged end of the bracket, is tightly pressed on the outer side surface of the upright post.
Further, the width of the upper layer cable trench is larger than that of the lower layer cable trench.
Further, the cable support that is located upper cable pit is located the lower part of upper cable pit.
Furthermore, a water guide groove is arranged on the bottom surface of the lower layer cable trench.
The invention has the beneficial effects that:
1. and (3) designing the cable trench in an upper-lower layered mode, and dividing the space of an upper region and a lower region according to the quantity of power and control cables. Power cable is placed on the upper layer, and control cable is placed on the lower layer, so that influence on control cable when the power cable catches fire is reduced. The thickness of the layered cement cover plate is 50mm, the cable laying space is not affected, the fireproof performance of the cable trench is improved to 6-8 hours, and sufficient fire fighting time is provided for maintenance personnel.
(2) The cable trench which is arranged in an upper-lower layered mode adopts a structure with a wide upper part and a narrow lower part, so that the power cable is convenient to lay, and the power cable is close to the ground and has a better heat dissipation space; thirdly, the visual cover plate is convenient to take out; and fourthly, the maintenance personnel have a movable space in the lower layer space of the cable trench, so that the cables are convenient to lay and install.
(3) The visual cover plate is made of heat-resistant fireproof glass cover plate, so that the visual cover plate is lighter than the cement prefabricated plate, and is convenient to take and mount and dismount; the control cable is made of transparent materials, so that the control cable can be patrolled without lifting a cover plate; thirdly, the heat-resistant type is adopted, the fireproof performance can reach 3h, the temperature of the back fire surface is low, and the influence on the control cable is small when the power cable is on fire.
(4) The cable trench which is arranged in a layered manner from top to bottom adopts a structure with shallow top and deep bottom, so that the quantity of power and control cables is fully considered, the space waste of the cable trench with the same depth of the top layer and the bottom layer is avoided, the excavation amount of civil engineering is reduced, and the construction cost is reduced; the depth of the lower-layer cable trench and the space in the trench facilitate cable laying personnel to lay and overhaul cables in the trench; thirdly, the integral depth of the upper layer and the lower layer of the cable trench does not exceed 70% of the height of the patrol personnel, and the patrol personnel can conveniently go in and out from the upper layer and the lower layer.
(5) The rotary cable support can select the number of the supports according to the number of the cable layers, and the supports can be placed and stored according to the number of the cables, so that the cable support can be mounted at any time, and is convenient and fast to install; when one deck or one side cable laying, accomodate lower floor or offside support, increased the interior fortune dimension space of ditch.
(6) The bottom of the lower layer cable trench is provided with the water guide groove, so that rainwater can be guided conveniently when raining, rainwater is not accumulated in the cable trench, and the influence of a wet and rainwater soaking environment on the cable is reduced.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is an enlarged schematic view of portion B of FIG. 1;
FIG. 4 is an enlarged schematic view of a portion C of FIG. 1;
FIG. 5 is a side view of the cable support in the lower cable trench;
FIG. 6 is a top view of the cables positioned in the lower cable trench;
FIG. 7 is an enlarged view of portion D of FIG. 6;
fig. 8 is an enlarged schematic view of a portion E in fig. 6.
In the figure: 1-upper cable trench, 2-lower cable trench, 21-water chute, 3-clapboard, 31-visual cover plate, 4-upper cable trench cover plate, 5-power cable, 6-control cable, 7-cable support, 71-upright post, 72-bracket, 73-hinge, 8-anchor bar.
Detailed Description
As shown in figure 1, a visual fire prevention cable pit of double-deck includes the cable pit, the cable pit in be provided with baffle 3, just baffle 3 will the cable pit separate into upper cable pit 1 and lower floor's cable pit 2. An upper cable trench cover plate 4 is arranged at the upper end of the upper cable trench 1.
The upper cable trench 1 and the lower cable trench 2 are internally positioned on the side walls of the cable trenches and are respectively provided with a cable support 7, and the cable support 7 is fixedly connected with the side walls of the cable trenches through anchor bars 8. Wherein the cable support 7 that is located upper cable pit 1 is used for bearing power cable 5, and the cable support 7 that is located lower floor's cable pit 2 is used for bearing control cable 6.
In a specific embodiment, the partition 3 and the upper cable trench cover 4 are made of cement precast slabs.
Further, as shown in fig. 1 and 3, a visual cover plate 31 is disposed in the middle of the partition plate 3, and as a specific embodiment, the visual cover plate 31 in this embodiment is made of fireproof glass with a fire endurance of 3h, which has the characteristic of high fire resistance and heat insulation.
Like this, not only can be when 5 on upper power cable catch fire, have fine the effect of preventing leaving to the control cable 6 of lower floor, moreover when patrolling and maintaining the cable pit, only need lift upper cable trench cover 4 and just can be to the cable behavior surveyability of upper strata and lower floor, greatly alleviateed the work load of fortune dimension, in addition, the personnel of patrolling can take out visual apron 31 under the condition that does not get into the cable pit.
As shown in fig. 1, 2 and 4, the cable support 7 includes a column 71, the column 71 is fixedly connected to the sidewall of the cable trench through an anchor 8, a plurality of brackets 72 for supporting the cable are disposed on the column 71 along the vertical direction, and the brackets 72 are disposed perpendicular to the column 71.
Furthermore, only one bracket 72 is arranged on the upright column 71 of the cable support 7 of the upper layer cable trench 1, and a plurality of brackets 72 are uniformly distributed on the upright column 71 of the cable support 7 of the lower layer cable trench 2.
Further, as shown in fig. 1, the width of the upper layer cable trench 1 is greater than the width of the lower layer cable trench 2, so that the width of the lower layer cable trench 2 is reduced on the premise of meeting the requirement of cable laying, the civil engineering excavation amount of the cable trench can be reduced, and the construction cost is reduced.
Through placing power cable 5 individual layers in upper cable pit 1, and the width of upper cable pit 1 is greater than the width of lower floor's cable pit 2, like this, power cable 5 is close to ground, has better heat dissipation space, is favorable to power cable 5's heat dissipation, reduces the probability that the conflagration took place.
Further, the cable support 7 located in the upper layer cable trench 1 is located at the lower part of the upper layer cable trench 1, so that a sufficient turning radius space is reserved above the power cable 5, the cable can be conveniently turned in and out, and the damage of the cable turning to the cable is reduced.
Further, the degree of depth of upper cable pit 1 is less than the degree of depth of lower floor's cable pit 2, just the whole degree of depth of cable pit is no longer than 70% of patrolling and examining personnel's height, makes things convenient for personnel to pass in and out from top to bottom.
Further, be provided with guiding gutter 21 on the bottom surface of lower floor's cable pit 2, cable pit lower floor's bottom has set up guiding gutter 21, is convenient for when raining water conservancy diversion rainwater, does not deposit the rainwater in the cable pit, reduces the influence of moist, rainwater soaking environment to the cable.
Further, as shown in fig. 5, 6, 7 and 8, one end of the bracket 72 is rotatably connected to the upright 71 by a hinge 73, and the hinged end of the bracket 72 is provided with a recess for receiving an outer side portion of the upright 71. The side of the groove far away from the hinged end of the bracket 72 is a plane perpendicular to the bracket 72, and the distance M from the plane to the hinged point of the hinge 73 is slightly smaller than the distance N from the outer side of the upright 71 to the hinged point of the hinge 73, namely when the bracket 72 is in a perpendicular state with the upright 71, the side of the groove far away from the hinged end of the bracket 72 is pressed on the outer side of the upright 71.
When the cable needs to be laid, the bracket 72 is rotated to the direction perpendicular to the side wall of the cable trench, and the bracket 72 is clamped by the outer side surface of the upright post 71 for laying the cable, so that the stability of the cable support 7 for laying the cable can be ensured. For the cable trench 2 at the lower layer, when cables are laid at the upper layer, the bracket 72 at the lower layer can be stored on the wall, and a lower installation and operation space is reserved; for the cable trench with the brackets on two sides, when only one cable trench is laid, the bracket on the other side is accommodated on the wall, and the transverse space of the cable trench is increased by the size of one bracket; the number of the brackets is automatically installed at each stage of engineering construction according to the number of cables, the brackets are freely opened and stored according to cable laying conditions, construction according to final scale at the initial stage is not needed, and manufacturing cost is reduced.
Claims (9)
1. The utility model provides a double-deck visual fire prevention cable pit, includes the cable pit, its characterized in that: the cable trench is divided into an upper layer cable trench and a lower layer cable trench by a partition plate, and an upper layer cable trench cover plate is arranged at the upper end of the upper layer cable trench;
the lateral wall of upper cable pit and lower floor's cable pit on be provided with cable support respectively, be located the cable support of upper cable pit is used for bearing power cable, and the cable support that is located lower floor's cable pit is used for bearing control cable.
2. The double-layer visual fireproof cable trench of claim 1, wherein: the middle part of the clapboard is provided with a visual cover plate.
3. The double-layer visual fireproof cable trench of claim 2, wherein: the visual cover plate is made of fireproof glass.
4. The double-layer visual fireproof cable trench of claim 1, wherein: the cable support include with cable pit lateral wall fixed connection's stand, the stand on be provided with a plurality of bracket perpendicularly, be located the stand of the cable support of upper cable pit and only be provided with a bracket, the equipartition is provided with a plurality of brackets on the stand of the cable support of the cable pit that is located lower floor.
5. The double-layer visual fireproof cable trench of claim 4, wherein: one end of the bracket is rotatably connected with the upright post through a hinge.
6. The double-layer visual fireproof cable trench of claim 5, wherein: the hinge end of the bracket is provided with a groove, the side surface of the groove, which is far away from the hinge end of the bracket, is a plane which is perpendicular to the bracket, and when the bracket and the stand column are in a perpendicular state, the side surface of the groove, which is far away from the hinge end of the bracket, is tightly pressed on the outer side surface of the stand column.
7. The double-layer visual fireproof cable trench of claim 1, wherein: the width of the upper layer cable trench is larger than that of the lower layer cable trench.
8. The double-layer visual fireproof cable trench of claim 1, wherein: and the cable support positioned in the upper-layer cable trench is positioned at the lower part of the upper-layer cable trench.
9. The double-layer visual fireproof cable trench of claim 1, wherein: and a water guide groove is arranged on the bottom surface of the lower-layer cable trench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910910860.1A CN110601121A (en) | 2019-09-25 | 2019-09-25 | Double-layer visual fireproof cable trench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910910860.1A CN110601121A (en) | 2019-09-25 | 2019-09-25 | Double-layer visual fireproof cable trench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110601121A true CN110601121A (en) | 2019-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910910860.1A Pending CN110601121A (en) | 2019-09-25 | 2019-09-25 | Double-layer visual fireproof cable trench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110601121A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509650A (en) * | 2020-04-24 | 2020-08-07 | 广东电网有限责任公司东莞供电局 | Visual cable trench and cable trench maintenance method |
| CN111725749A (en) * | 2020-07-01 | 2020-09-29 | 周翔 | Fireproof isolation device for laying concealed wires |
| CN111786281A (en) * | 2020-07-20 | 2020-10-16 | 常熟盈德气体有限公司 | Anti-ablation electrical high-voltage cabinet with temperature measurement system |
| CN111799041A (en) * | 2020-07-03 | 2020-10-20 | 安徽新芜金磐装饰有限公司 | Cable conductor stranding device |
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| CN201766336U (en) * | 2010-04-30 | 2011-03-16 | 金华电业局 | Fireproof cable tray |
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| CN206517022U (en) * | 2017-03-06 | 2017-09-22 | 国网宁夏电力设计有限公司 | A kind of dual-open type cable trench box |
| CN206595687U (en) * | 2017-02-22 | 2017-10-27 | 中国联合工程公司 | Strong and weak electricity separate type cable shaft structure |
| CN107508245A (en) * | 2017-09-08 | 2017-12-22 | 国网山东省电力公司淄博供电公司 | Foldable cable bearer |
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2019
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Patent Citations (6)
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| KR100923920B1 (en) * | 2009-07-23 | 2009-10-28 | (주)엠파워 | Support roller for cable spreader |
| CN201766336U (en) * | 2010-04-30 | 2011-03-16 | 金华电业局 | Fireproof cable tray |
| CN202373945U (en) * | 2011-12-19 | 2012-08-08 | 浙江省电力设计院 | Shallow buried type ground electric cable tray system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509650A (en) * | 2020-04-24 | 2020-08-07 | 广东电网有限责任公司东莞供电局 | Visual cable trench and cable trench maintenance method |
| CN111509650B (en) * | 2020-04-24 | 2022-01-18 | 广东电网有限责任公司东莞供电局 | Visual cable trench and cable trench maintenance method |
| CN111725749A (en) * | 2020-07-01 | 2020-09-29 | 周翔 | Fireproof isolation device for laying concealed wires |
| CN111725749B (en) * | 2020-07-01 | 2021-10-01 | 隆恩建设工程有限公司 | Fireproof isolation device for laying concealed wires |
| CN111799041A (en) * | 2020-07-03 | 2020-10-20 | 安徽新芜金磐装饰有限公司 | Cable conductor stranding device |
| CN111799041B (en) * | 2020-07-03 | 2021-12-07 | 山东希尔电缆有限公司 | Cable conductor stranding device |
| CN111786281A (en) * | 2020-07-20 | 2020-10-16 | 常熟盈德气体有限公司 | Anti-ablation electrical high-voltage cabinet with temperature measurement system |
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Application publication date: 20191220 |