CN217934904U - Temporary power utilization engineering cable laying structure - Google Patents
Temporary power utilization engineering cable laying structure Download PDFInfo
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- CN217934904U CN217934904U CN202221790383.3U CN202221790383U CN217934904U CN 217934904 U CN217934904 U CN 217934904U CN 202221790383 U CN202221790383 U CN 202221790383U CN 217934904 U CN217934904 U CN 217934904U
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- cable
- cross arm
- isolating switch
- protective tube
- electrical engineering
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Abstract
The utility model relates to a temporary power utilization engineering cable laying structure, which comprises a fire lapping device and a cable trench, wherein the fire lapping device is provided with an insulated wire, and the insulated wire is connected with a cable; the bottom of the cable trench is provided with a supporting layer, a protection tube and a vertical grounding column are arranged in the supporting layer, and the lower end of the cable extends into the cable trench and penetrates through the protection tube; the upper surface of the supporting layer is provided with a warning belt and a backfill layer, and the backfill layer covers the warning belt. The utility model discloses utilize insulated wire connecting cable and near power cord, make the cable circular telegram, through set up a plurality of earth connection posts in the cable pit, can carry out ground protection to the cable, influence near power equipment or biological safety when preventing that the cable from leaking electricity.
Description
Technical Field
The utility model belongs to the technical field of cable laying, especially, interim power consumption engineering cable laying structure.
Background
In a certain temporary power utilization project, it is necessary to install an electrical facility such as an 800KVA box transformer, and to supply power to the electrical facility, it is necessary to lay a cable so as to connect a power line and a power utilization facility in the vicinity. At present, generally lay the cable through taking fire rod and cable pit, the cable pit does not carry out ground protection, and the security is than relatively poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a higher interim power consumption engineering cable laying structure of security is provided.
In order to solve the above problem, the utility model adopts the technical scheme that: the temporary power utilization engineering cable laying structure comprises a fire lapping device and a cable trench, wherein an insulated wire is arranged on the fire lapping device and connected with a cable;
the bottom of the cable trench is provided with a supporting layer, a protection tube and a vertical grounding column are arranged in the supporting layer, and the lower end of the cable extends into the cable trench and penetrates through the protection tube; the upper surface of the supporting layer is provided with a warning belt and a backfill layer, and the backfill layer covers the warning belt.
Furthermore, the fire taking device comprises an electric pole, a plurality of horizontal high-voltage cross arms are arranged at the upper part of the electric pole, an isolating switch cross arm is arranged below the high-voltage cross arms, an arrester cross arm is arranged below the isolating switch cross arms, a breaker bracket is arranged below the arrester cross arm, an isolating switch is arranged on the isolating switch cross arm, an arrester is arranged on the arrester cross arm, and a breaker is arranged on the breaker bracket; the insulated wire is fixed on the high-voltage cross arm and is connected with the isolating switch, the isolating switch is simultaneously connected with the lightning arrester and the circuit breaker, and the lightning arrester is connected with the grounding mechanism; the circuit breaker is connected with a cable.
Furthermore, the outer wall of the lower portion of the electric pole is provided with a vertical protection pipe, the lower end of the protection pipe extends into the protection pipe, and the cable penetrates through the protection pipe.
Further, ground mechanism includes downlead and many vertical settings in the earthing pole underground, link to each other through electrically conductive crossbeam between the earthing pole, the downlead links to each other with the earthing pole.
Furthermore, the circuit breaker is connected with a mutual inductor, and the mutual inductor is connected with a cable.
Further, the supporting layer is a fine sand layer.
Further, the protection pipe is an HDPE corrugated pipe.
Furthermore, a plurality of identification columns are pre-buried in the backfill soil layer, and the upper ends of the identification columns extend to the ground.
The beneficial effects of the utility model are that: the utility model discloses utilize insulated wire connecting cable and near power cord, make the cable circular telegram, through set up a plurality of ground posts in the cable pit, can carry out ground protection to the cable, influence near power equipment or biological safety when preventing the cable electric leakage.
Drawings
Fig. 1 is a schematic view of the present invention;
FIG. 2 is a schematic front view of the fire-setting device;
FIG. 3 is a side view of the fire apparatus;
FIG. 4 isbase:Sub>A schematic cross-sectional view A-A of FIG. 1;
reference numerals: 1-pole; 2-cable trench; 3-high voltage cross arm; 4, isolating switch cross arm; 5-lightning arrester cross arm; 6-circuit breaker support; 7, an isolating switch; 8-a lightning arrester; 9- (c) -; 10-an insulated wire; 11-a cable; 12-a support layer; 13-a ground post; 14-a protective tube; 15-warning tape; 16-backfill soil layer; 17-a protective tube; 18-a transformer; 19-a marker post; 20-down lead; 21-earth electrode; 22-conductive beam.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
The utility model discloses an interim power consumption engineering cable laying structure, as shown in fig. 1 to fig. 4, including taking fiery device and cable pit 2, take to be provided with insulated wire 10 on the fiery device, insulated wire 10 is connected with cable 11.
The power line is generally erected on the power transmission tower, and the fire lapping device is used for conducting the power line with the cable 11 so as to enable the cable 11 to be communicated with the power line.
Take the fire device specifically as shown in fig. 2 and fig. 3, including pole 1, 1 plants near the power transmission tower of pole, can adopt the hollow post of metal, also can adopt hollow or solid concrete cylinder, can be the round platform shape, and the top external diameter is less than the bottom external diameter, reduces the focus, and the post-planting stability is higher.
The upper portion of pole 1 is provided with many horizontally high-voltage cross arms 3, and the below of high-voltage cross arm 3 is provided with isolator cross arm 4, and isolator cross arm 4's below is provided with arrester cross arm 5. High-voltage cross arm 3, isolator cross arm 4 and arrester cross arm 5 all regard as a supporting beam with section bars such as angle steel, channel-section steel, steel sheet, and a supporting beam can pass through the staple bolt fastening on pole 1. An insulator or a high-voltage suspension bottle is arranged on the support beam of the high-voltage cross arm 3 and used for suspending the insulated wire 10.
The isolating switch cross arm 4 is provided with an isolating switch 7, the isolating switch 7 adopts a GW9-10/630 high-voltage isolating switch, and when the construction is suspended and the equipment connected with a live line is powered off, the isolating switch 7 can isolate the power-off equipment and the insulated wire 10 to protect the power-off equipment. The lightning arrester 8 is arranged on the lightning arrester cross arm 5, the lightning arrester 8 adopts an HY5WS-17/50 zinc oxide lightning arrester, and the lightning arrester 8 can protect the cable 11 and the electrical equipment from being damaged by lightning overvoltage, operation overvoltage and power frequency transient overvoltage impact. A breaker support 6 is arranged below the lightning arrester cross arm 5, a breaker 9 is arranged on the breaker support 6, the breaker 9 adopts a ZW32-12F/630A-25kA column vacuum breaker, and the circuit can be protected, namely when the current in a fire line is too large, the circuit can be automatically disconnected, and the effect of protecting the cable 11 and equipment is achieved.
The insulated conductor 10 is fixed on the high-voltage cross arm 3 and is connected with the isolating switch 7, the isolating switch 7 is simultaneously connected with the lightning arrester 8 and the circuit breaker 9, the lightning arrester 8 is connected with the grounding mechanism, and the circuit breaker 9 is connected with the cable 11 to form a grounding circuit and a temporary power line. The lightning arrester 8 is grounded, and when electric leakage occurs, electric charges can be rapidly introduced into the ground to prevent people from getting an electric shock.
The cable trench 2 is then used for embedding a cable 11, in particular: the bottom of the cable trench 2 is provided with a supporting layer 12, a protective tube 14 and a vertical grounding column 13 are arranged in the supporting layer 12, and the lower end of the cable 11 extends into the cable trench 2 and penetrates through the protective tube 14; the upper surface of the supporting layer 12 is provided with a warning tape 15 and a backfill layer 16, and the backfill layer 16 covers the warning tape 15.
The support layer 12 may be made of soft material such as fine sand, soft soil, etc., and the fine sand is sand with a particle size of less than 2 mm. The support layer 12 may serve to absorb shock and cushion, and when the protection pipe 14 is impacted from the ground or both sides, the support layer 12 is deformed to prevent the protection pipe 14 from being damaged. The protective tube 14 is used to protect the cable 11 from mechanical damage. The protection pipe 14 may be a metal pipe or a plastic pipe, preferably a HDPE corrugated pipe, which has certain strength, light weight, and is easy to move and install.
The grounding post 13 can be made of angle steel, channel steel, rectangular steel, flat iron and other profiles, the lower end of the grounding post 13 is driven into the soil below the cable trench 2, and the upper part of the grounding post is close to the protection pipe 14. The cable 11 can be grounded, and when the cable 11 leaks electricity, the charges are guided into the ground through the grounding column 13, so that the charges are prevented from being accumulated on the ground surface and damaging the safety of equipment or personnel. The surface of the grounding pole 13 is galvanized to improve the corrosion resistance.
The warning tape 15, which may be a metal plate or a concrete plate, preferably a concrete plate, is provided above the protective pipe 14, and when a person or a construction unit punches a hole downward, the warning tape 15 may block the punching apparatus, thereby functioning to protect the protective pipe 14. The upper surface of the warning belt 15 can be written with warning words, such as 'cable is arranged below' and the like. In order to indicate more clearly, a plurality of identification columns 19 are embedded in the backfill layer 16, and the upper ends of the identification columns 19 extend to the ground. The marking columns 19 can be metal columns or concrete columns, and can be cylindrical or prismatic, the outer wall of each marking column 19 is written with a cable, no excavation is required, and the distance between every two adjacent marking columns 19 is 50-60 meters.
The upper end of cable 11 links to each other with insulated conductor 10, leaks outward in the air, receives the damage easily, consequently, is provided with vertical protective tube 17 at the outer wall of 1 lower part of pole, and protective tube 17 adopts the steel pipe, fixes at 1 outer wall of pole through the staple bolt, and protective tube 17's lower extreme stretches into protection tube 14, and cable 11 runs through protective tube 17. The protective tube 17 protects the cable 11 which is positioned outside the cable trench 2 and is lower in position, and prevents the cable 11 from being damaged due to movement of personnel.
The grounding mechanism comprises a down conductor 20 and a plurality of grounding electrodes 21 vertically arranged underground, the grounding electrodes 21 are connected through a conductive cross beam 22, and the down conductor 20 is connected with the grounding electrodes 21. Earthing pole 21 is a plurality of, sets up around the pole 1, and electrically conductive crossbeam 22 constitutes grounding network with earthing pole 21, and the ground connection is effectual. The grounding electrode 21 can be made of galvanized angle steel and other sectional materials, and the burial depth of the upper end of the grounding electrode is not less than 0.75 m; the conductive beam 22 is made of galvanized flat steel.
The circuit breaker 9 is connected with a mutual inductor 18, and the mutual inductor 18 is connected with the cable 11. The transformer 18 adopts a JLSZV-10W 50/5A outdoor combined transformer, can convert voltage or current into standard low voltage or small current, and can separate the cable 11 from a high-voltage system so as to ensure the safety of personnel and equipment.
In addition, the mutual inductor 18 can be connected with an FKGA42-KCG3 type special transformer acquisition terminal, and can realize the acquisition of electric energy meter data, the monitoring of the working condition of electric energy metering equipment and the quality of power supply and the monitoring of electric load and electric energy.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. Temporary power consumption engineering cable laying structure, its characterized in that: the cable structure comprises a fire lapping device and a cable trench (2), wherein an insulated wire (10) is arranged on the fire lapping device, and the insulated wire (10) is connected with a cable (11);
the bottom of the cable trench (2) is provided with a supporting layer (12), a protective tube (14) and a vertical grounding column (13) are arranged in the supporting layer (12), and the lower end of the cable (11) extends into the cable trench (2) and penetrates through the protective tube (14); the upper surface of the supporting layer (12) is provided with a warning belt (15) and a backfill layer (16), and the backfill layer (16) covers the warning belt (15).
2. A temporary electrical engineering cabling structure according to claim 1, wherein: the fire taking device comprises an electric pole (1), wherein a plurality of horizontal high-voltage cross arms (3) are arranged on the upper portion of the electric pole (1), an isolating switch cross arm (4) is arranged below the high-voltage cross arm (3), an arrester cross arm (5) is arranged below the isolating switch cross arm (4), a breaker bracket (6) is arranged below the arrester cross arm (5), an isolating switch (7) is arranged on the isolating switch cross arm (4), an arrester (8) is arranged on the arrester cross arm (5), and a breaker (9) is arranged on the breaker bracket (6); the insulated conductor (10) is fixed on the high-voltage cross arm (3) and is connected with the isolating switch (7), the isolating switch (7) is simultaneously connected with the lightning arrester (8) and the circuit breaker (9), and the lightning arrester (8) is connected with a grounding mechanism; the circuit breaker (9) is connected with a cable (11).
3. A temporary electrical engineering cabling structure according to claim 2, wherein: the outer wall of pole (1) lower part is provided with vertical protective tube (17), protective tube (14) is stretched into to the lower extreme of protective tube (17), protective tube (17) is run through in cable (11).
4. A temporary electrical engineering cabling construction according to claim 2, wherein: the grounding mechanism comprises a down lead (20) and a plurality of grounding electrodes (21) vertically arranged underground, the grounding electrodes (21) are connected through a conductive beam (22), and the down lead (20) is connected with the grounding electrodes (21).
5. A temporary electrical engineering cabling structure according to claim 2, wherein: the circuit breaker (9) is connected with a mutual inductor (18), and the mutual inductor (18) is connected with the cable (11).
6. A temporary electrical engineering cabling arrangement as claimed in claim 1, wherein: the supporting layer (12) is a fine sand layer.
7. A temporary electrical engineering cabling arrangement as claimed in claim 1, wherein: the protection pipe (14) is an HDPE corrugated pipe.
8. A temporary electrical engineering cabling structure according to claim 1, wherein: a plurality of identification columns (19) are embedded in the backfill soil layer (16), and the upper ends of the identification columns (19) extend to the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221790383.3U CN217934904U (en) | 2022-07-12 | 2022-07-12 | Temporary power utilization engineering cable laying structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221790383.3U CN217934904U (en) | 2022-07-12 | 2022-07-12 | Temporary power utilization engineering cable laying structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217934904U true CN217934904U (en) | 2022-11-29 |
Family
ID=84188771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221790383.3U Active CN217934904U (en) | 2022-07-12 | 2022-07-12 | Temporary power utilization engineering cable laying structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217934904U (en) |
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2022
- 2022-07-12 CN CN202221790383.3U patent/CN217934904U/en active Active
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