CN-122000825-A - Multistable flexible supporting device suitable for tunnel GIL pipeline is anti large deformation

CN122000825ACN 122000825 ACN122000825 ACN 122000825ACN-122000825-A

Abstract

The invention discloses a multistable flexible supporting device suitable for large deformation resistance of a tunnel GIL pipeline, which comprises a horizontal supporting unit, a vertical supporting unit and a connecting unit, wherein the horizontal supporting unit and the vertical supporting unit are respectively provided with a supporting device, the supporting devices are formed by an upper layer of dislocation component, a lower layer of dislocation component and a middle dislocation component, the upper layer of dislocation component, the lower layer of dislocation component and the middle dislocation component are in relatively dislocation occlusion connection through a gear structure, the middle dislocation component is clamped between the upper layer of dislocation component and the lower layer of dislocation component, and the connecting unit is matched with the GIL pipeline and is fixed with the middle dislocation component of the horizontal supporting unit. Through the synergistic effect of the two units, the synchronous adaptation of horizontal and vertical bidirectional dislocation displacement is realized, the friction damping generated by gear meshing dislocation is utilized to absorb deformation energy, the displacement amplitude of the GIL pipeline is effectively reduced, dislocation damage is avoided, the structure is stable, the installation is convenient, and the requirement of large deformation resistance of the long-distance GIL pipeline is adapted.

Inventors

YANG ZHENYU
HE WENYU
MA YUHONG
LU YUKANG
ZHAO GUIFENG

Assignees

广州大学

Dates

Publication Date: 20260508
Application Date: 20260107

Claims (10)

1. A multistable flexible supporting device suitable for large deformation resistance of a tunnel GIL pipeline is characterized by comprising The horizontal support unit is used for adapting to the dislocation displacement of the GIL pipeline in the horizontal direction; the vertical supporting unit is connected with the horizontal supporting unit and is used for adapting to the dislocation displacement of the GIL pipeline in the vertical direction; And one end of the connecting unit is connected with the horizontal supporting unit, and the other end of the connecting unit is used for being detachably connected with the GIL pipeline.
2. The multi-stable flexible supporting device suitable for large deformation resistance of tunnel GIL pipeline according to claim 1, wherein the horizontal supporting unit and the vertical supporting unit are respectively provided with supporting devices, and the supporting devices have the same structure and are respectively horizontally arranged on the horizontal supporting unit and vertically arranged on the vertical supporting unit.
3. The multi-stable flexible supporting device suitable for large deformation resistance of tunnel GIL pipeline according to claim 2, wherein the supporting device comprises an upper layer of dislocation component, a lower layer of dislocation component and a middle dislocation component, wherein both the upper layer of dislocation component and the lower layer of dislocation component are provided with engagement structures, both the upper side and the lower side of the middle dislocation component are provided with engagement structures which are matched with the engagement structures, and the middle dislocation component is clamped between the upper layer of dislocation component and the lower layer of dislocation component, and the engagement connection capable of relative dislocation is realized through the engagement structures and the engagement structures.
4. The multi-stable flexible supporting device suitable for large deformation resistance of tunnel GIL pipeline according to claim 3, wherein the engagement structure and the matching structure are both gear structures, and the top end of the gear is a smooth curved surface.
5. The multi-stable flexible supporting device suitable for large deformation resistance of tunnel GIL pipeline according to claim 3, wherein the supporting device is further provided with a limiting baffle plate, the limiting baffle plate is arranged on the outer sides of the upper layer of dislocation component and the lower layer of dislocation component and used for limiting the middle dislocation component to separate, the limiting baffle plate is provided with a baffle plate fixing hole, and the baffle plate fixing hole is used for fixing and installing the limiting baffle plate.
6. The multi-stable flexible supporting device for large deformation resistance of tunnel GIL pipeline according to claim 3, wherein the middle dislocation component is provided with a plane section along the vertical direction of the cross section of the matching structure, and the connecting unit is fixedly installed at the plane section.
7. The multi-stable flexible supporting device suitable for large deformation resistance of tunnel GIL pipeline according to claim 3, wherein the horizontal supporting unit and the vertical supporting unit are respectively provided with a horizontal supporting shell and a vertical supporting shell, the horizontal supporting shell and the vertical supporting shell are fixedly connected through L-shaped metal sheets, the vertical supporting shell is provided with a bolt hole, the vertical supporting shell is fixedly connected with a tunnel wall body through the bolt hole, and the upper layer of dislocation component and the lower layer of dislocation component are respectively provided with a component fixing hole and are fixedly connected with the horizontal supporting shell and the vertical supporting shell through the component fixing holes.
8. The multi-stable flexible supporting device for large deformation resistance of tunnel GIL pipeline according to claim 7, wherein the horizontal supporting shell and the vertical supporting shell are hollow structures, the cross section of which is U-shaped, arc-shaped or combined curved, and the top surfaces of the horizontal supporting shell and the vertical supporting shell are provided with notches.
9. The multi-stable flexible supporting device for large deformation resistance of tunnel GIL pipeline according to claim 1, wherein the connecting unit comprises a fitting part adapting to the shape of the GIL pipeline and a fixing part connected with the middle dislocation component, wherein the fitting part is of an annular, semi-annular or arc structure, and the fixing part is provided with an assembling hole.
10. A multistable flexible supporting device for tunnel GIL line with high deformation resistance according to claim 3, wherein at least two groups of upper layer dislocation elements are arranged in parallel with the lower layer dislocation elements.

Description

Multistable flexible supporting device suitable for tunnel GIL pipeline is anti large deformation Technical Field The invention relates to the technical field of GIL pipeline supporting devices, in particular to a multistable flexible supporting device suitable for large deformation resistance of a tunnel GIL pipeline. Background GIL is used as a novel gas-insulated metal-enclosed transmission line, and is widely applied to world ultra-high voltage and extra-high voltage power transportation based on the characteristics of good reliability, environmental adaptability, operation and maintenance convenience, large transmission capacity and the like, and the installation length of the global GIL at present exceeds thousands of kilometers. GIL transmission pipelines are widely applied to the field of ultra-high and extra-high voltage transmission as novel transmission line equipment for replacing the traditional overhead transmission line. Although the fault occurrence rate of GIL is smaller, once the equipment fails, serious consequences are caused to the equipment and peripheral equipment, so that the operation safety of the whole power network is affected, and huge life and property losses are caused due to the higher operation voltage level of GIL and the important role of GIL in the power transmission process. At present, the GIL is widely arranged in an underground tunnel and is greatly influenced by earthquake and vibration, the ground and soil body are possibly deformed during strong earthquake, the length of a GIL line is large, the soil body deformation can cause the tunnel to generate dislocation deformation so as to cause the dislocation deformation of the GIL, the GIL equipment is finally damaged, a flexible supporting device is added at the bracket for installing the GIL pipeline in the tunnel, the damping level of the GIL pipeline bracket in the tunnel is improved, and the method is the most effective at present for reducing the dislocation deformation caused by the large deformation of the GIL pipeline due to the earthquake. The existing supporting device suitable for the tunnel GIL pipeline has the obvious defects that the supporting device can only provide buffering for deformation in a horizontal or vertical single direction, cooperative adaptation of horizontal and vertical double-direction dislocation displacement cannot be realized, a pipeline full-dimension displacement scene caused by tunnel deformation is difficult to cover, meanwhile, the existing supporting device has limited damping effect of a dislocation structure, deformation energy cannot be effectively absorbed under extreme working conditions such as strong shock, the requirement of large deformation resistance of a long-distance GIL pipeline is difficult to meet, and pipeline dislocation damage is easy to cause. Disclosure of Invention The invention provides a multistable flexible supporting device suitable for large deformation resistance of a tunnel GIL pipeline, which aims to solve the problems that the conventional tunnel GIL pipeline supporting device is difficult to adapt to horizontal and vertical double-direction dislocation displacement at the same time, so that when the tunnel is deformed due to the influence of geological activities such as earthquake, the bidirectional displacement of the pipeline cannot be effectively buffered, the GIL pipeline is easily broken and damaged, and the power transmission safety is further influenced. In order to achieve the above purpose, the present invention provides the following technical solutions: A multistable flexible supporting device suitable for large deformation resistance of a tunnel GIL pipeline comprises The horizontal support unit is used for adapting to the dislocation displacement of the GIL pipeline in the horizontal direction; the vertical supporting unit is connected with the horizontal supporting unit and is used for adapting to the dislocation displacement of the GIL pipeline in the vertical direction; and one end of the connecting unit is connected with the horizontal supporting unit, and the other end of the connecting unit is used for being detachably connected with the GIL pipeline. Further, the horizontal supporting unit and the vertical supporting unit are respectively provided with a supporting device, and the supporting devices have the same structure and are respectively horizontally arranged on the horizontal supporting unit and vertically arranged on the vertical supporting unit. Further, the supporting device comprises an upper layer of dislocation component, a lower layer of dislocation component and a middle dislocation component, wherein the upper layer of dislocation component and the lower layer of dislocation component are respectively provided with an engagement structure, the upper side and the lower side of the middle dislocation component are respectively provided with a matching structure adapting to the engagement structure, the middle di