CN214176850U - Cable down-leading structure in transformer substation power transmission tower - Google Patents
Cable down-leading structure in transformer substation power transmission tower Download PDFInfo
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- CN214176850U CN214176850U CN202022826232.6U CN202022826232U CN214176850U CN 214176850 U CN214176850 U CN 214176850U CN 202022826232 U CN202022826232 U CN 202022826232U CN 214176850 U CN214176850 U CN 214176850U
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Abstract
The utility model relates to a structure is drawn down to cable in transformer substation's transmission tower relates to cable transport technical field, and it includes the cable support pole, installs stick type post insulator and the fixed gold utensil of generating line on the cable support pole, and the cable support pole has two at least, is connected with the cable on the fixed gold utensil of generating line, the cable support pole including installation pole and with installation pole along axis fixed connection's dead lever, the dead lever surface has spiral helicine shirt rim, and dead lever end fixing has sharp portion. When sand ground circuit was carried, the fixed unstable problem in cable cradling piece and ground has improved the security of whole structure.
Description
Technical Field
The application relates to the technical field of cable transportation, in particular to a cable leading-down structure in a power transmission tower of a transformer substation.
Background
When electric power from a thermal power plant, a photovoltaic power plant, and a wind power plant is drawn for use, it is necessary to perform circuit transmission of electric power generated by the power plant. In the process of circuit transmission, the substation leads out the cable terminal line on the electric tower through multiple structures, and then the power transmission can be carried out.
The utility model patent with the related art and the publication number of CN210430870U discloses a cable leading-down structure in a transformer substation power transmission tower, which comprises a suspension type lightning arrester, a cable terminal and a cable bracket; a cable on the power transmission tower is connected with a cable terminal through a suspension type arrester and then passes through a cable bracket to be arranged underground, and the suspension type arrester is positioned above the cable terminal; the cable terminal comprises a cable terminal head and a cable protection pipe, and after the cable terminal head is connected with a lead cable, the cable penetrates through the cable protection pipe; the cable support comprises a cable support frame rod and a lower connecting channel steel. The utility model discloses a create the structure cooperation design cable can lead to the underground when can satisfying the transformer substation transmission of electricity and carry the demand, need not to set up the iron tower and carry out the cable switching outside the station, reduced the resource consumption and the space that the iron tower was built and occupy, also avoided the restriction of the environment outside the station simultaneously, and use the suspension type arrester and place in the requirement that can satisfy low pressure 35KV transmission of electricity above the cable terminal.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the cable cradling piece of cable downlead structure passes through rivet fixed with ground in the transmission tower of transformer substation, when desert photovoltaic power generation station carries out the circuit transport, needs to be at sand ground conveying circuit, and the cable cradling piece is fixed unstably with sand ground, has the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
In order to improve when sand ground circuit carries, the fixed unstable problem in cable support pole and sand ground, this application provides a structure is drawn down to cable in transformer substation's transmission tower.
The application provides a structure adopts following technical scheme under cable draws in transmission tower of transformer substation:
the utility model provides a structure is drawn down to cable in transformer substation's transmission tower, includes cable support pole, installs stick type post insulator and the fixed gold utensil of generating line on the cable support pole, is connected with the cable on the fixed gold utensil of generating line, and cable support pole has two at least, cable support pole including installation pole and with installation pole along axis fixed connection's dead lever, the dead lever surface has spiral helicine shirt rim, and the dead lever end fixing has sharp portion.
Through adopting above-mentioned technical scheme, the dead lever can dig into the underground through sharp-pointed part and can be fixed firmly with ground through spiral helicine shirt rim, when having reduced sand ground circuit and having carried, the fixed unstable possibility in cable support pole and ground has improved the security of whole structure.
Optionally, the mounting rod is provided with a support frame for reinforcing the cable support rod.
Through adopting above-mentioned technical scheme, the cable cradling piece can further be consolidated to the support frame, prevents that cable cradling piece from rocking.
Optionally, the support frame is provided with support legs, and the support legs are provided with spike teeth for grabbing the ground.
Through adopting above-mentioned technical scheme, the spike tooth can be grabbed ground, prevents that the support frame from sliding, has further strengthened the fixed stability in cable support pole and ground.
Optionally, the cable jacket is provided with a protective tube.
Through adopting above-mentioned technical scheme, the cable can alternate in the protective tube, and the protection tube can play the guard action to the cable, prevents that the animal from gnawing the cable.
Optionally, the protective tube includes an inner insulating layer and an outer metal layer.
Through adopting above-mentioned technical scheme, the insulating layer can prevent the cable electric leakage, and the metal level can play the guard action to the cable, can also delay the ageing speed of insulating layer when preventing that the animal from gnawing the cable, prolongs the live time of protection tube and cable.
Optionally, a heat insulation layer is disposed between the insulation layer and the metal layer.
By adopting the technical scheme, the heat insulation layer can maintain the temperature of the cable at a relatively stable temperature in summer and winter when the weather is hot or cold, the possibility of melting or frost cracking of the cable and the insulation layer is reduced, and the service time of the protection tube and the cable is prolonged.
Optionally, the cable support rod is provided with a clamping assembly, and the clamping assembly comprises a connecting rod fixedly connected with the mounting rod and a clamping claw mounted on the connecting rod and used for fixing the cable.
Through adopting above-mentioned technical scheme, the gripper jaw can the centre gripping protection tube, prevents that the protection tube from rocking.
Optionally, the supporting frame is fixedly connected with the mounting rod through a bolt, and a rubber sleeve is sleeved at the joint of the supporting frame and the mounting rod through the bolt.
Through adopting above-mentioned technical scheme, can reduce the bolt that support frame and installation pole junction receive the possibility that the rainwater corrodes, conveniently twist and change the bolt and dismantle the support frame and maintain.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the cable support rod can be drilled into the ground through the sharp part of the fixing rod and can be firmly fixed with the ground through the skirt edge on the fixing rod, the support frame on the cable support rod can further improve the stability of the cable support rod, the possibility that the cable support rod is fixed with the ground unstably during sand circuit conveying is reduced, and the safety of the whole structure is improved;
2. the cable is inserted into the protection tube, the protection tube can prevent animals from biting the cable, meanwhile, the temperature of the cable in the protection tube can be maintained, the possibility of frost cracking or melting of the cable is reduced, the aging speed of the cable is reduced, and the service life of the cable is prolonged;
3. the clamping claw can clamp the protection tube inserted by the cable, so that the possibility of shaking the protection tube is reduced.
Drawings
Fig. 1 is a schematic overall structural view of a cable lead-down structure in a substation transmission tower according to an embodiment of the present application;
FIG. 2 is a cross-sectional view taken along plane A-A of FIG. 1;
fig. 3 is a schematic diagram of a cable lead-down structure in a substation transmission tower in a sand installation state.
Description of reference numerals: 1. a cable support pole; 11. mounting a rod; 12. fixing the rod; 121. a skirt edge; 13. a sharp portion; 14. a support frame; 141. a support leg; 1411. nailing teeth; 15. a rubber sleeve; 2. protecting the tube; 21. an insulating layer; 22. a metal layer; 23. a thermal insulation layer; 3. a clamping assembly; 31. a connecting rod; 32. a gripper jaw; 4. a cable; 5. a rod-type post insulator; 6. a bus fixing hardware fitting; 7. and (4) sand ground.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a cable leading-down structure in a power transmission tower of a transformer substation. Referring to fig. 1, the cable down-lead structure in a substation transmission tower includes a cable support pole 1 and a cable 4 mounted on the cable support pole 1. The cable support rod 1 can be two, and the cable support rod 1 comprises a mounting rod 11 and a fixing rod 12 welded with the mounting rod 11 along the axis of the mounting rod 11. The installation pole 11 is kept away from 12 one end fixedly connected with bar post insulator 5 of dead lever and generating line fixed fitting 6, and fixedly connected with cable 4 on the generating line fixed fitting 6, cable 4 follow vertical direction downwardly extending to the underground. The surface of the fixing rod 12 is integrally formed with a skirt 121 of a spiral structure, and the end of the fixing rod 12 is welded with a sharp part 13. Cable support rod 1 bores into sand through sharp portion 13 to fix in sand underground through shirt rim 121, shirt rim 121 has increased dead lever 12 and ground area of contact, has strengthened the stability of dead lever 12, when having reduced sand ground circuit and having carried, cable support rod 1 and the fixed unstable possibility in ground have improved the security of whole structure.
Referring to fig. 1, in order to further enhance the stability of fixing the cable support rod 1 to the ground, the side surface of the mounting rod 11 is bolted with support frames 14, the number of the support frames 14 can be 3, and 3 support frames 14 are uniformly distributed around the cable support rod 1. In other embodiments of the present application, the number of the supporting frames 14 may also be 4, and four supporting frames 14 are uniformly distributed around the cable support rod 1. The whole support frame 14 is a long rod, one end of the support frame 14 is fixedly connected with the installation rod 11 through a bolt, the other end of the support frame is welded or bolted with the support leg 141, the support leg 141 can be a rectangular plate, the rectangular plate is tightly attached to the ground, the support leg 141 is tightly attached to one side of the ground to form a plurality of spike teeth 1411 in an integrated forming mode, the length of the spike teeth 1411 is 10-15cm, and the spike teeth 1411 can be connected with the ground more firmly. The joint cover with support frame 14 on the installation pole 11 is equipped with rubber sleeve 15, and rubber sleeve 15 can reduce the bolt of junction and receive the possibility that the rainwater corrodes, conveniently dismantles support frame 14 and changes.
Referring to fig. 1 and 2, in order to reduce the possibility of the cable 4 being bitten by animals and at the same time reduce the rate of ageing of the surface layer of the cable 4 near the sandy ground portion, the cable 4 is sheathed with a protective tube 2. The protection tube 2 includes an insulation layer 21 and a metal layer 22, the insulation layer 21 may be a PVC layer or a rubber layer, and the metal layer 22 may be a stainless steel layer having a thickness of 0.3-0.5 mm. The protection tube 2 is the open pipe in both ends, and protection tube 2 inserts the underground, and cable 4 inserts and wears out as the circuit transport from the opening of the underground of the protection tube 2 one end of keeping away from ground. The insulating layer 21 can reduce the possibility of breakage and leakage of the cable 4. The metal layer 22 can reduce the possibility that an animal bites the cable 4 and damages the cable 4. The heat insulation layer 23 is filled between the insulation layer 21 and the metal layer 22, the heat insulation layer 23 can be a sponge layer, and the heat insulation layer 23 can reduce the possibility that the insulation layer 21 and the cable 4 are broken due to too high or too low external temperature, so that the service life of the cable 4 is prolonged.
Referring to fig. 1 and 3, in order to reduce the possibility of the protective tube 2 shaking due to wind, the clamping assembly 3 is mounted on the mounting rod 11. The clamping assembly 3 comprises a connecting rod 31 and a clamping jaw 32. The connecting rods 31 can be long rods, the connecting rods 31 can be two, and the two connecting rods 31 are oppositely and fixedly arranged on the two cable support rods 1 and are parallel to the ground. One end of the connecting rod 31 is fixedly connected with the cable support rod 1, and the other end is welded or bolted with the clamping jaw 32. The gripper jaw 32 can be the arc, and gripper jaw 32 on two connecting rods 31 can be fixed with the 2 centre gripping of protection tube, reduces protection tube 2 and receives wind force influence to sway and bring the potential safety hazard, has improved the stability of protection tube 2.
The implementation principle of the cable leading-down structure in the power transmission tower of the transformer substation is as follows: in the cable 4 of transformer substation transmission tower draws installation in the process down, earlier with the sharp-pointed part 13 of cable support pole 1 to soft sand ground, use the instrument to rotate cable support pole 1, the surface layer shirt rim 121 of dead lever 12 can increase the area of contact of dead lever 12 with ground and with the firm fixing in underground of dead lever 12, install support frame 14 simultaneously and be used for further supporting fixed mounting pole 11 on installation pole 11, when having reduced sand ground circuit transport, the fixed unstable possibility in cable support pole 1 and sand ground, the security of whole structure has been improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a structure is drawn down to cable in transformer substation's transmission tower, includes cable support pole (1), installs stick type post insulator (5) and generating line fitting (6) on cable support pole (1), is connected with cable (4) on generating line fitting (6), its characterized in that: the cable support rod (1) comprises at least two cable support rods, the cable support rods (1) comprise mounting rods (11) and fixing rods (12) fixedly connected with the mounting rods (11) along the axis, spiral skirt edges (121) are arranged on the surfaces of the fixing rods (12), and sharp parts (13) are fixed at the end parts of the fixing rods (12).
2. The substation transmission tower internal cable down-lead structure according to claim 1, characterized in that: and a support frame (14) for reinforcing the cable support rod (1) is arranged on the mounting rod (11).
3. The substation transmission tower internal cable down-lead structure according to claim 2, characterized in that: the supporting frame (14) is provided with a supporting leg (141), and the supporting leg (141) is provided with spike teeth (1411) for grabbing the ground.
4. The substation transmission tower internal cable down-lead structure according to claim 1, characterized in that: and a protective pipe (2) is sleeved outside the cable (4).
5. The substation transmission tower internal cable down-lead structure according to claim 4, characterized in that: the protective tube (2) comprises an inner insulating layer (21) and an outer metal layer (22).
6. The substation transmission tower internal cable down-lead structure according to claim 5, characterized in that: and a heat insulation layer (23) is arranged between the insulating layer (21) and the metal layer (22).
7. The substation transmission tower internal cable down-lead structure according to claim 1, characterized in that: the cable support rod (1) is provided with a clamping component (3), and the clamping component (3) comprises a connecting rod (31) fixedly connected with the mounting rod (11) and a clamping claw (32) arranged on the connecting rod (31) and used for fixing the cable (4).
8. The substation transmission tower internal cable down-lead structure according to claim 2, characterized in that: the supporting frame (14) is fixedly connected with the mounting rod (11) through bolts, and a rubber sleeve (15) is sleeved at the joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022826232.6U CN214176850U (en) | 2020-11-27 | 2020-11-27 | Cable down-leading structure in transformer substation power transmission tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022826232.6U CN214176850U (en) | 2020-11-27 | 2020-11-27 | Cable down-leading structure in transformer substation power transmission tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214176850U true CN214176850U (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022826232.6U Active CN214176850U (en) | 2020-11-27 | 2020-11-27 | Cable down-leading structure in transformer substation power transmission tower |
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| Country | Link |
|---|---|
| CN (1) | CN214176850U (en) |
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- 2020-11-27 CN CN202022826232.6U patent/CN214176850U/en active Active
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