CN-122025237-A - Insulating tubular bus of dampproofing corrosion-resistant shielding layer for underground track traffic tunnel

CN122025237ACN 122025237 ACN122025237 ACN 122025237ACN-122025237-A

Abstract

The invention relates to the technical field of cable manufacture, and discloses a moistureproof corrosion-resistant shielding layer insulating tubular bus for an underground track traffic tunnel, which aims to solve the problems of uneven thickness of an insulating layer and a semi-conductive layer and distortion of an electric field caused by dead weight sagging and train vibration of the existing bus, the bus consists of a conductor tube, an inner semi-conductive layer, the insulating layer, an outer semi-conductive layer, a corrosion-resistant shielding layer, a pressure equalizing component and a slippage adjusting component, the sliding adjustment assembly adopts the bottom splayed pushing block, the top overlapping block and the circumferential gradual depth guide groove to be matched, the vertical extrusion force at the lower part of the bus can be converted into full circumferential inward pressure, the homogenization of the compression deformation of the insulating layer is realized, and the pressure equalizing assembly provides arc support.

Inventors

NAN HAO
JIA FEI
XIA XIONG
ZHANG GUOHUA

Assignees

湖北兴和电力新材料股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260312

Claims (10)

1. The utility model provides a dampproofing corrosion-resistant shielding layer insulating tubular busbar for underground track traffic tunnel which characterized in that, includes the conductor tube, the outside coaxial parcel of conductor tube has interior semiconductive layer, the outside coaxial parcel of interior semiconductive layer has the insulating layer, and the outside coaxial parcel of insulating layer has outer semiconductive layer, the outside parcel of outer semiconductive layer has corrosion-resistant shielding layer, the outside of corrosion-resistant shielding layer is provided with the voltage-sharing subassembly, the outside of voltage-sharing subassembly is provided with the slip adjustment subassembly; The sliding adjustment assembly comprises a first sliding block and a second sliding block, the first sliding block and the second sliding block are respectively attached to the left side and the right side of the pressure equalizing assembly, the first sliding block and the second sliding block are enclosed to form an annular sleeve, a first pushing block is integrally arranged at the bottom end of the first sliding block, a second pushing block is integrally arranged at the bottom end of the second sliding block, the first pushing block and the second pushing block jointly form a splayed structure with an upward opening, the top end of the first sliding block is integrally connected with a first lamination block, the top end of the second sliding block is integrally connected with a second lamination block, the first lamination block is overlapped above the second lamination block, and the first lamination block and the second lamination block are in sliding connection; When the gravity of the conductor tube and the inner semi-conductive layer acts on the inner wall of the sliding adjustment assembly, the downward gravity drives the pressure equalizing assembly to push the first pushing block and the second pushing block downwards, and the downward force is converted into the force of the first sliding block and the second sliding block sliding along the circumferential direction under the action of the splayed structure with the upward opening, so that the overlapping part between the first overlapping block and the second overlapping block is increased.
2. The insulated tubular bus with the dampproof corrosion-resistant shielding layer for the underground track traffic tunnel of claim 1, wherein the slip adjusting assembly is externally wrapped with an outer sheath, a plurality of guide grooves are formed in the inner wall of the outer sheath at equal intervals, and the groove depth of the guide grooves gradually becomes shallow from bottom to top.
3. The insulated tubular bus of the dampproof corrosion-resistant shielding layer for the underground track traffic tunnel of claim 2, wherein the first sliding block and the second sliding block are fixedly connected with a third sliding block on the outer wall, and the third sliding block is slidably connected inside the guide groove.
4. The insulated tubular bus of the dampproof corrosion-resistant shielding layer for the underground railway traffic tunnel of claim 1, wherein the voltage equalizing component comprises a lower supporting block and an upper supporting block which are symmetrically arranged at the bottom and the top of the corrosion-resistant shielding layer respectively.
5. The insulated tubular bus of the dampproof corrosion-resistant shielding layer for the underground railway traffic tunnel of claim 4, wherein a flexible buffer strip is arranged between the lower supporting block and the upper supporting block, the top of the flexible buffer strip is fixedly connected with the upper supporting block, and the bottom of the flexible buffer strip is fixedly connected with the lower supporting block.
6. The insulated tubular bus bar of the dampproof corrosion-resistant shielding layer for the underground railway traffic tunnel of claim 5, wherein the flexible buffer strips are symmetrically arranged in two groups about the vertical central axis of the lower support block, and the lower support block, the upper support block and the two groups of flexible buffer strips are jointly enclosed into an annular sleeve shape.
7. The insulated tubular bus bar of the dampproof corrosion-resistant shielding layer for the underground track traffic tunnel of claim 4, wherein the outer wall of the lower supporting block is fixedly connected with a first sliding block, the outer wall of the upper supporting block is fixedly connected with a second sliding block, limit grooves are formed in the inner walls of the first sliding block and the second sliding block, and the first sliding block and the second sliding block are slidably connected in the limit grooves.
8. The insulated tubular bus with the dampproof and corrosion-resistant shielding layer for the underground track traffic tunnel according to claim 2, wherein a plurality of mounting clamps are arranged at equal intervals on the outer part of the outer sheath, the mounting clamps are used for mounting and fixing the outer sheath, and the first lamination block and the second lamination block are located above the voltage equalizing component and the first extrusion block and the second extrusion block are located below the voltage equalizing component after the mounting.
9. The insulated tubular bus bar of the dampproof corrosion-resistant shielding layer for the underground track traffic tunnel of claim 8, wherein the mounting fixture comprises a mounting block, a first fixing fixture block is fixedly connected to the top of the mounting block, a second fixing fixture block is arranged on the top of the first fixing fixture block, the first fixing fixture block and the second fixing fixture block are clamped outside the outer sheath together, fixing bolts are mounted at two ends of the first fixing fixture block, and the fixing bolts are used for fixing the first fixing fixture block and the second fixing fixture block.
10. The insulated tubular bus bar with the dampproof and corrosion resistant shielding layer for the underground railway traffic tunnel according to claim 9, wherein the inner walls of the first fixed clamping block and the second fixed clamping block are fixedly connected with a protection pad, and the protection pad is attached to the outer wall of the outer sheath.

Description

Insulating tubular bus of dampproofing corrosion-resistant shielding layer for underground track traffic tunnel Technical Field The invention relates to the technical field of cable manufacture, in particular to a moistureproof corrosion-resistant shielding layer insulating tubular bus for an underground track traffic tunnel. Background The tubular bus is a rigid high-capacity power transmission component which is formed by sequentially coating an insulating layer, a semi-conductive shielding layer and an outer protective sleeve by taking a hollow metal conductive pipe as a core conductor, is mainly used for main electric energy transmission and distribution in a high-voltage power transmission and distribution system, has the advantages of large current-carrying capacity, high heat dissipation efficiency, good mechanical strength, uniform electric field distribution, strong installation adaptability and the like, is widely applied to scenes such as rail transit, transformer substations, power plants and intelligent power distribution systems, and is key power distribution equipment for guaranteeing stable power transmission. The tubular bus in the track traffic tunnel is mainly installed and laid by adopting a span, under the action of long-term dead weight, the cross-middle area of the bus can generate natural sagging deformation, so that the semiconductive layer and the insulating layer at the lower part are continuously subjected to radial extrusion, uneven thickness distribution of the semiconductive layer and the insulating layer at the upper side and the lower side of the bus is easy to be caused, the thickness of the semiconductive layer can directly reduce the electric field uniform regulation effect of the semiconductive layer, the concentricity of the semiconductive layer and an inner metal conductive pipe is easy to be influenced due to the uneven thickness of the insulating layer, meanwhile, the continuous vibration caused by train operation can further intensify stress alternation among layers, the interface bonding force of the semiconductive layer and the insulating layer is gradually attenuated, local interlayer gaps and even interface debonding defects are extremely easy to be generated, the uniformity of the electric field inside the bus is further deteriorated, the insulating reliability of the bus is reduced, and the long-term operation service life of the bus is prolonged. Disclosure of Invention The technical problem to be solved by the invention is that a tubular bus arranged in a track traffic tunnel in a span way in the prior art is easy to cause the problems of uneven thickness of an insulating layer and a semi-conductive layer, attenuation of interlayer binding force, even gap debonding and the like under the combined action of lower extrusion caused by long-term dead weight sagging and continuous vibration of a train, so that the uniformity and concentricity of an electric field are affected, and the defects of the bus such as electric performance, insulation reliability and operation life are reduced. The technical scheme is that the insulating tubular bus with the dampproof corrosion-resistant shielding layer for the underground track traffic tunnel comprises a conductor tube, wherein an inner semiconductive layer is coaxially wrapped outside the conductor tube, an insulating layer is coaxially wrapped outside the inner semiconductive layer, an outer semiconductive layer is coaxially wrapped outside the insulating layer, the corrosion-resistant shielding layer is wrapped outside the outer semiconductive layer, a voltage equalizing component is arranged outside the corrosion-resistant shielding layer, and a sliding adjusting component is arranged outside the voltage equalizing component; The sliding adjustment assembly comprises a first sliding block and a second sliding block, the first sliding block and the second sliding block are respectively attached to the left side and the right side of the pressure equalizing assembly, the first sliding block and the second sliding block are enclosed to form an annular sleeve, a first pushing block is integrally arranged at the bottom end of the first sliding block, a second pushing block is integrally arranged at the bottom end of the second sliding block, the first pushing block and the second pushing block jointly form a splayed structure with an upward opening, the top end of the first sliding block is integrally connected with a first lamination block, the top end of the second sliding block is integrally connected with a second lamination block, the first lamination block is overlapped above the second lamination block, and the first lamination block and the second lamination block are in sliding connection; When the gravity of the conductor tube and the inner semi-conductive layer acts on the inner wall of the sliding adjustment assembly, the downward gravity drives the pressure equalizing assembly to push the first pushing block