CN103490347B - A kind of cable laying method solving the cable heat expansion amount of stretching - Google Patents
A kind of cable laying method solving the cable heat expansion amount of stretching Download PDFInfo
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- CN103490347B CN103490347B CN201310391066.3A CN201310391066A CN103490347B CN 103490347 B CN103490347 B CN 103490347B CN 201310391066 A CN201310391066 A CN 201310391066A CN 103490347 B CN103490347 B CN 103490347B
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- cable
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- shaft body
- cleat
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910000838 Al alloy Inorganic materials 0.000 claims description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 230000008676 import Effects 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 241001465754 Metazoa Species 0.000 abstract description 4
- 241000270295 Serpentes Species 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a kind of cable laying method solving the cable heat expansion amount of stretching, comprise the steps: 1) cable laying well; 2) installing cables; 3) shutoff underground pillar.The invention provides a kind of cable laying method solving the cable heat expansion amount of stretching; its rational cable arrangements; adopt cable arc change absorbing cable thermal expansion length increment, guarantee that pillar waterproof and snake class animal enter simultaneously, efficiently solve power cable and lay thermal expansion problem down over long distances.
Description
Technical field
The present invention and a kind of cable laying method solving the cable heat expansion amount of stretching.
Background technology
At present; China is in urbanization and rapid economic development period; the people improve constantly electricity needs; wish that transmission line and environment are lived integrally harmonious simultaneously; power cable underground laying is the perfect means of urban electricity supply; adopt new technology simultaneously, new technology, construction method is constantly brought forth new ideas, and not only protection of the environment but also the power cable trenchless installation Technique Popularizing economized the land resource application were deeply on both sides of the Changjiang River.
Power cable no-dig technique river crossing is applied, successively successful implementation 250m, 380m, 500m, 680m, crosses over width and constantly breaks through, and along with power cable monomer length increases, power cable thermal expansion length increment problem is also given prominence to gradually.
Summary of the invention
For solving the problem; the object of the present invention is to provide a kind of cable laying method solving the cable heat expansion amount of stretching; its rational cable arrangements; adopt cable arc change absorbing cable thermal expansion length increment; guarantee that pillar waterproof and snake class animal enter simultaneously, efficiently solve power cable and lay thermal expansion problem down over long distances.
The present invention reaches above-mentioned object, and the present invention adopts following technical scheme:
Solve a cable laying method for the cable heat expansion amount of stretching, comprise the steps:
1) cable laying well
First offer cable shaft in underground, then in cable shaft, install fire compartment wall, described fire compartment wall and the two-port of cable shaft are positioned at same straight line; Then at the both sides of fire compartment wall difference installing cables joint, and the both sides of cable joint are separately installed with cable cleat, described cable cleat and fire compartment wall at right angle setting;
2) installing cables
First the import and export of cable shaft misplace vertical being connected with underground pillar respectively, then the cable in the pillar of underground is divided into 2 groups, 2 groups of cables are successively by the import of cable shaft, the outlet of first cable cleat, cable joint, second cable cleat and cable shaft, and described 2 groups of cables lay respectively at the both sides of fire compartment wall; Then every root cable is passed through cable joint, the cable cleat being simultaneously arranged on cable joint two ends is fixed the cable through this cable joint;
3) shutoff underground pillar
Waterproof packing material is installed in the pillar of underground seal between underground pillar and cable, thus completes the provided underground of whole cable.
Described cable shaft comprises the first cable shaft body, the second cable shaft body, the 3rd cable shaft body, the first described cable shaft body, the second cable shaft body are connected with the 3rd cable shaft body entire body, and the width of the first described cable shaft body is greater than the second cable shaft body and the 3rd cable shaft body respectively.
The described cable be arranged between 2 cable cleats is the cable being in pass-through state, and the cable between cable wellhead and cable cleat is the cable being in arc bending shape state.
Described in the pillar of underground install 2 pieces of aluminium alloy clamping plate, between 2 pieces of aluminium alloy clamping plate, then fill waterproof plasticine underground pillar sealed; Described 1 of pillar piece of aluminium alloy clamping plate outer surface and the underground pillar mouth end face of closely descending is positioned at same plane.
Be provided with 3 pieces of anticorrosion fan-shaped iron plates outside described aluminium alloy clamping plate, described anticorrosion fan-shaped iron plate is connected with well body of wall by bolt.
Beneficial effect of the present invention is: the invention provides a kind of cable laying method solving the cable heat expansion amount of stretching; its rational cable arrangements; adopt cable arc change absorbing cable thermal expansion length increment; guarantee that pillar waterproof and snake class animal enter simultaneously, efficiently solve power cable and lay thermal expansion problem down over long distances.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
The left view of Fig. 2 Fig. 1;
Fig. 3 is the structural representation that cable of the present invention occurs when stretching;
Fig. 4 is the amplification view of underground pillar;
Fig. 5 is the structural representation that cable shaft installs fan-shaped iron plate.
Embodiment
Embodiment 1
As shown in Figure 1, the present embodiment provides a kind of cable laying method solving the cable heat expansion amount of stretching, and comprises the steps: the first, cable laying well.First offer cable shaft 1 in underground, then in cable shaft 1, install fire compartment wall 11, described fire compartment wall 11 is positioned at same straight line with the two-port of cable shaft 1; Then at the both sides of fire compartment wall 11 difference installing cables joint 12, and the both sides of cable joint 12 are separately installed with cable cleat 13, described cable cleat 13 and fire compartment wall 11 at right angle setting.Cable shaft 1 comprises the first cable shaft body 14, second cable shaft body 15, the 3rd cable shaft body 16, the first described cable shaft body 14, second cable shaft body 15 is connected with the 3rd cable shaft body 16 entire body, and the width of the first described cable shaft body 14 is greater than the second cable shaft body 15 and the 3rd cable shaft body 16 respectively.
The second, installing cables.First the import and export of cable shaft 1 misplace vertical being connected with underground pillar 3 respectively, then the cable 2 in underground pillar 3 is divided into 2 groups, 2 groups of cables 2 are successively by the import of cable shaft 1, the outlet of first cable cleat 13, cable joint 12, second cable cleat 13 and cable shaft 1, and described 2 groups of cables 2 lay respectively at the both sides of fire compartment wall 11; Then every root cable 2 is passed through cable joint 12, the cable cleat 13 being simultaneously arranged on cable joint 12 two ends is fixed the cable 2 through this cable joint 12.Be arranged on cable 2 between 2 cable cleats 13 for being in the cable 2 of pass-through state, the cable 2 between cable wellhead and cable cleat 13 is for being in the cable 2 of arc bending shape state.
3rd, shutoff underground pillar.Waterproof packing material is installed in underground pillar 3 seal between underground pillar 3 and cable 2.In underground pillar 3,2 pieces of aluminium alloy clamping plate 31 are installed, between 2 pieces of aluminium alloy clamping plate 31, then fill waterproof plasticine 32 pairs of underground pillars 3 seal; Described 1 of pillar 3 piece of aluminium alloy clamping plate 31 outer surface and underground pillar 3 mouthfuls of end faces of closely descending are positioned at same plane.Be provided with 3 pieces of anticorrosion fan-shaped iron plates 33 outside described aluminium alloy clamping plate 31, described anticorrosion fan-shaped iron plate 33 is connected with well body of wall by bolt, thus completes the provided underground of whole cable.
As shown in Figure 1, the import and export of cable shaft 1 misplace vertical being connected with underground pillar 3 respectively.After cable 1 in underground pillar 3 continues straight line, 2 groups of cables 1 turn round respectively and enter the well room of fire compartment wall 11, cable 1 fill on the grade beam of well room cable cleat 13 fixing after, carry out cable joint 12.It is " straight-curved-straight " that cable 1 is exported to cable cleat 13 fixing point floor projection from underground pillar 3, and side projection is dislocation vertical arrangement to three line horizontal registration.
As shown in Figure 2, cable shaft 1 is arranged on the ground end of river crossing and holds with going out.Cable shaft 1 function be cable 2 when laying facility settle, cable joint 12 device; The cable 2 heat expansion amount of stretching absorbs.The import and export of cable shaft 1 misplace vertical being connected with underground pillar 3 respectively.Cable shaft 1 is by concreting.
As shown in Figure 3, when cable 2 is heated generation length increment, cable shaft 1 is imported in the slip that can rub of cable 2 increment size into, underground pillar 3 mouthfuls to grade beam fill in cable cleat 13 fixing point distance, cable 2 produces waveform and bends, cable 2 increment size is larger, and it is larger that waveform bends amplitude, and now cable 2 bending radius still at safe condition.When cable 2 cools retraction, cable 2 waveform bending amplitude reduces, and at waterproof plugging device place, friction slips into underground pillar 3 to cable 2.2 groups of 6 cables 2 are because of staggered, and each own extending space, can not affect respective wave form varies mutually.The transmission of above cable 2 length, slides in the friction of waterproof plugging device place and does not affect waterproof shutoff function.Fix owing to cable 2 grade beam filling cable cleat 13, cable joint 12 position does not affect by tension force, or position is moved.
As shown in Figure 4, after cable 2 shuttles back and forth in underground pillar 3.Waterproof, fire prevention, anti-toy shutoff must be carried out in cable 2 and underground pillar 3 gap.1st piece of aluminium alloy clamping plate 31 are loaded in underground pillar 3 and forms annular with cable 2, at underground pillar 3 and the clearance filled waterproof plasticine 31 of cable 2, then the 2nd piece of aluminium alloy clamping plate 31 are covered, formed on annular aluminium alloy clamping plate 31 and tight a bolt, make aluminium alloy clamping plate 31, waterproof plasticine 32, cable 2 and underground pillar 3, jointly form seal.Finally load onto fan-shaped iron plate 33, be fixed on wall body with expansion bolt.When cable cold and hot flexible time, cable 2 increases and decreases the length slip that can rub and imports cable shaft 1 into, and underground pillar 3 waterproof plugging device does not damage.
As shown in Figure 5, by 6 pieces of aluminium alloy clamping plate 31 and 3 blocks of fan-shaped steel plates 33, waterproof plugging device adds that screw and nut forms a unit, and every 1 underground pillar 3 mouthfuls uses 1 unit.Aluminium alloy clamping plate 31 are cast members, and fan-shaped steel plate 33 is pressing mold steel plates, and all there is preservative treatment on surface.
A kind of cable laying method solving the cable heat expansion amount of stretching described in the present embodiment; its rational cable arrangements; adopt cable arc change absorbing cable thermal expansion length increment; guarantee that pillar waterproof and snake class animal enter simultaneously, efficiently solve power cable and lay thermal expansion problem down over long distances.
Claims (2)
1. solve a cable laying method for the cable heat expansion amount of stretching, it is characterized in that comprising the steps:
1) cable laying well
First offer cable shaft (1) in underground, then in cable shaft (1), install fire compartment wall (11), described fire compartment wall (11) is positioned at same straight line with the two-port of cable shaft (1); Then in the both sides of fire compartment wall (11) difference installing cables joint (12), and the both sides of cable joint (12) are separately installed with cable cleat (13), described cable cleat (13) and fire compartment wall (11) at right angle setting;
2) installing cables
First the import and export of cable shaft (1) misplace vertical being connected with underground pillar (3) respectively, then the cable (2) in underground pillar (3) is divided into 2 groups, 2 groups of cables (2) are successively by the outlet of the import of cable shaft (1), first cable cleat (13), cable joint (12), second cable cleat (13) and cable shaft (1), and described 2 groups of cables (2) lay respectively at the both sides of fire compartment wall (11); Then by every root cable (2) by cable joint (12), the cable cleat (13) being simultaneously arranged on cable joint (12) two ends is fixed the cable (2) through this cable joint (12);
3) shutoff underground pillar
Waterproof packing material is installed in underground pillar (3) seal between underground pillar (3) and cable (2), thus completes the provided underground of whole cable; Described step 1) cable shaft (1) comprises the first cable shaft body (14), the second cable shaft body (15), the 3rd cable shaft body (16); the first described cable shaft body (14), the second cable shaft body (15) are connected with the 3rd cable shaft body (16) entire body, and the width of the first described cable shaft body (14) is greater than the second cable shaft body (15) and the 3rd cable shaft body (16) respectively; Described step 2) be arranged on cable (2) between 2 cable cleats (13) for being in the cable (2) of pass-through state, be positioned at cable (2) between cable wellhead and cable cleat (13) for being in the cable (2) of arc bending shape state; First described step 3) installs 2 pieces of aluminium alloy clamping plate (31) in underground pillar (3), between 2 pieces of aluminium alloy clamping plate (31), then fills waterproof plasticine (32) seal underground pillar (3); Described 1 piece of aluminium alloy clamping plate (31) outer surface of pillar (3) and underground pillar (3) the mouth end face of closely descending is positioned at same plane.
2. a kind of cable laying method solving the cable heat expansion amount of stretching according to claim 1, it is characterized in that: be provided with 3 pieces of anticorrosion fan-shaped iron plates (33) outside described aluminium alloy clamping plate (31), described anticorrosion fan-shaped iron plate (33) is connected with well body of wall by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310391066.3A CN103490347B (en) | 2013-09-02 | 2013-09-02 | A kind of cable laying method solving the cable heat expansion amount of stretching |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310391066.3A CN103490347B (en) | 2013-09-02 | 2013-09-02 | A kind of cable laying method solving the cable heat expansion amount of stretching |
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| Publication Number | Publication Date |
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| CN103490347A CN103490347A (en) | 2014-01-01 |
| CN103490347B true CN103490347B (en) | 2016-04-06 |
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| CN201310391066.3A Active CN103490347B (en) | 2013-09-02 | 2013-09-02 | A kind of cable laying method solving the cable heat expansion amount of stretching |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114917509A (en) * | 2022-04-02 | 2022-08-19 | 深圳标典新材料有限公司 | Application of fire protection system in cable tunnel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08179174A (en) * | 1994-12-21 | 1996-07-12 | Hitachi Cable Ltd | Connecting joint for tube and wire-like body laying line using the same |
| CN101383492A (en) * | 2008-10-30 | 2009-03-11 | 湖北省电力勘测设计院 | Cable snake shaped laying method |
| CN201893535U (en) * | 2010-11-22 | 2011-07-06 | 宁夏凯晨电气集团有限公司 | Sealing device for pipe mouth of cable |
| CN102623935A (en) * | 2012-03-22 | 2012-08-01 | 李超 | Cable laying method and bracket thereof |
-
2013
- 2013-09-02 CN CN201310391066.3A patent/CN103490347B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08179174A (en) * | 1994-12-21 | 1996-07-12 | Hitachi Cable Ltd | Connecting joint for tube and wire-like body laying line using the same |
| CN101383492A (en) * | 2008-10-30 | 2009-03-11 | 湖北省电力勘测设计院 | Cable snake shaped laying method |
| CN201893535U (en) * | 2010-11-22 | 2011-07-06 | 宁夏凯晨电气集团有限公司 | Sealing device for pipe mouth of cable |
| CN102623935A (en) * | 2012-03-22 | 2012-08-01 | 李超 | Cable laying method and bracket thereof |
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| CN103490347A (en) | 2014-01-01 |
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