Underground GIL pipe gallery structure for high geothermal area

Abstract

The utility model belongs to the technical field of pipe gallery structure construction, and particularly relates to an underground GIL pipe gallery structure for a high geothermal area, which comprises a pipe gallery main body, a main channel, an accident exhaust duct, a machine room, a high-voltage cable cabin I, a high-voltage cable cabin II, a GIL pipeline and a civil engineering wall surface, the wall surface cooling system comprises a bottom damp-proof layer, a framework, a bottom plate, a bottom heat insulation layer, a surface heat insulation layer, a wall surface cooling water pipe, a plastering surface layer, a water supply branch pipe, a water return branch pipe, a water supply main pipe, a water return main pipe and an outdoor cooling tower, one end of the wall surface cooling water pipe is connected to the water supply branch pipe, and the other end of the wall surface cooling water pipe is connected to the water return branch pipe; the water supply main pipe and the water return main pipe are connected to an outdoor cooling tower. The structure is beneficial to reducing the influence of terrestrial heat on the air temperature in the pipe gallery, and is beneficial to the operation of pipe gallery operators and the operation of cables in the pipe gallery.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipe gallery structure construction technical field, concretely relates to a kind of underground GIL pipe gallery structure for high geothermal area. BACKGROUND

[0002] As an important way of long-distance power transmission, underground GIL pipe gallery has higher requirements for structural design, and it needs to be stable and reliable, economical and safe. However, in the plateau region with active plate tectonics, the high geothermal environment is common due to the influence of complex geological conditions and underground heat sources. The underground GIL pipe gallery located in the high geothermal environment faces a serious internal heat damage problem: the heat transferred by high-heat rock-soil increases the air temperature in the pipe gallery, which is not conducive to the normal work of operating personnel and will affect the normal operation of various cables in the pipe gallery. If the conventional ventilation and air conditioning method is used to control the internal temperature of the pipe gallery in the high geothermal area, it will produce a large energy consumption. There is currently a lack of underground GIL pipe gallery structure suitable for high geothermal areas that includes an efficient energy-saving insulation scheme to reduce the impact of high geothermal environments on the internal environment of underground GIL pipe galleries, improve the thermal comfort of operating personnel inside the pipe gallery, and ensure the normal operation of various cables in the pipe gallery. SUMMARY

[0003] The utility model aims to avoid the adverse effects of the above-mentioned high geothermal environment on underground GIL pipe galleries and provides an underground GIL pipe gallery structure for high geothermal areas.

[0004] The utility model discloses a technical scheme: a kind of underground GIL pipe gallery structure for high geothermal area, the underground GIL pipe gallery structure for high geothermal area include pipe gallery main body, main passage, accident exhaust passage, machine room, high voltage cable storehouse I, high voltage cable storehouse II, GIL pipeline, civil wall, the main passage be arranged in the uppermost inside pipe gallery main body, the accident exhaust passage be arranged in the lowermost inside pipe gallery main body, the machine room, high voltage cable storehouse I, high voltage cable storehouse II be arranged in the region between main passage and accident exhaust passage in pipe gallery main body, high voltage cable storehouse I be arranged in the left side of machine room, high voltage cable storehouse II be arranged in the right side of machine room, the GIL pipeline be arranged in main passage, it is characterized by: the civil wall of main passage upper side, the civil wall of machine room lower side, the civil wall of high voltage cable storehouse I left side and lower side, the civil wall of high voltage cable storehouse II right side and lower side are all provided with wall cooling system, the wall cooling system includes bottom layer moisture-proof layer, framework, bottom plate, bottom layer heat insulation layer, surface layer heat insulation layer, wall cooling water pipe, plastering surface layer, water supply branch pipe, return water branch pipe, water supply main pipe, return water main pipe, outdoor cooling tower, the bottom layer moisture-proof layer is arranged on civil wall, the framework is arranged civil wall, the bottom plate is arranged on framework, the bottom layer heat insulation layer is arranged in the space between bottom plate and bottom layer moisture-proof layer, the surface layer heat insulation layer is arranged on bottom plate surface, the wall cooling water pipe is arranged on surface layer heat insulation layer surface, the plastering surface layer is arranged on surface layer heat insulation layer surface, plastering surface layer thickness is greater than the outer wall diameter of wall cooling water pipe, wall cooling water pipe one end is connected to water supply branch pipe other end is connected to return water branch pipe, the water supply branch pipe is connected to water supply main pipe, the water supply main pipe is connected to outdoor cooling tower, the return water branch pipe is connected to return water main pipe, the return water main pipe is connected to outdoor cooling tower.

[0005] The utility model has the advantages that: the bottom layer heat insulation layer and surface layer heat insulation layer of wall cooling system can reduce the transmission of geothermal to pipe gallery interior; the wall cooling system utilizes water in wall cooling water pipe to transport geothermal to outdoor, which can effectively reduce the air temperature in pipe gallery and improve the thermal comfort of operating personnel in pipe gallery and the safety of various cable operation in pipe gallery; the wall cooling system utilizes cooling tower as cold source, which has lower energy consumption than conventional air conditioning cold source. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 It is underground GIL pipe gallery structure of the utility model Figure I .

[0007] Figure 2 It is wall cooling system partial enlarged view of the utility model.

[0008] Figure 3 It is underground GIL pipe gallery structure of the utility model Figure II .

[0009] In the drawings, the corresponding technical features are labeled as follows:

[0010] 1-pipeline gallery main body, 2-main passage, 3-accident exhaust passage, 4-machine room, 5-high-voltage cable warehouse I, 6-high-voltage cable warehouse II, 7-GIL pipeline, 8-civil wall surface, 9-wall surface cooling system, 10-bottom layer moisture-proof layer, 11-skeleton, 12-bottom plate, 13-bottom layer thermal insulation layer, 14-surface layer thermal insulation layer, 15-wall surface cooling water pipe, 16-plastering surface layer, 17-water supply branch pipe, 18-return water branch pipe, 19-water supply main pipe, 20-return water main pipe, 21-outdoor cooling tower DETAILED DESCRIPTION

[0011] The utility model will be further described below in combination with the drawings and embodiments.

[0012] As shown in Figure 1 , Figure 2 or Figure 3 When implementing the utility model, first, the construction of the pipeline gallery main body (1) is completed, the pipeline gallery main body (1) is divided into the main passage (2), the accident exhaust passage (3), the machine room (4), the high-voltage cable warehouse I (5), the high-voltage cable warehouse II (6), the skeleton (11) and the bottom layer moisture-proof layer (11) are installed on the civil wall surface (8) on the upside of the main passage (2), the civil wall surface (8) on the downside of the machine room (4), the civil wall surface (8) on the left side and the downside of the high-voltage cable warehouse I (5) and the civil wall surface (8) on the right side and the downside of the high-voltage cable warehouse II (6), the bottom layer thermal insulation layer (13) is installed on the bottom layer moisture-proof layer (11), the bottom plate (12) is installed on the skeleton (11), the surface layer thermal insulation layer (14) is installed on the bottom plate (12), the wall surface cooling water pipe (15) is installed on the surface layer thermal insulation layer (14), the water supply main pipe (19) is installed in the machine room (4), the return water main pipe (20) is installed in the accident exhaust passage (3), the water supply branch pipe (17) is installed, the two ends of the water supply branch pipe (17) are communicated with the wall surface cooling water pipe (15) and the water supply main pipe (19) respectively, the return water branch pipe (18) is installed, the two ends of the return water branch pipe (18) are communicated with the wall surface cooling water pipe (15) and the return water main pipe (20) respectively, the outdoor cooling tower (21) is installed, the water supply main pipe (19) and the return water main pipe (20) are communicated with the outdoor cooling tower (21), the wall surface cooling water pipe (15), the water supply branch pipe (17), the return water branch pipe (18), the water supply main pipe (19), the return water main pipe (20) and the outdoor cooling tower (21) are tested for water circulation, after the test is qualified, the plastering surface layer (16) construction is completed, the GIL pipeline (7) installation is completed. The underground GIL pipeline gallery structure for high-geothermal areas can reduce the transmission of geothermal to the pipeline gallery interior and effectively reduce the air temperature in the pipeline gallery interior.

Claims

1. An underground GIL pipe gallery structure for high-geothermal areas, comprising a pipe gallery body, a main passage, an accident exhaust channel, a machine room, a high-voltage cable warehouse I, a high-voltage cable warehouse II, a GIL pipe, and a civil wall surface, wherein the main passage is arranged at the uppermost position inside the pipe gallery body, the accident exhaust channel is arranged at the lowermost position inside the pipe gallery body, the machine room, the high-voltage cable warehouse I, and the high-voltage cable warehouse II are arranged in the region between the main passage and the accident exhaust channel inside the pipe gallery body, the high-voltage cable warehouse I is arranged at the left side of the machine room, the high-voltage cable warehouse II is arranged at the right side of the machine room, and the GIL pipe is arranged in the main passage. The civil wall surface on the upside of the main channel, the civil wall surface on the downside of the machine room, the civil wall surface on the left side and downside of the high voltage cable warehouse I, and the civil wall surface on the right side and downside of the high voltage cable warehouse II are all provided with wall surface cooling systems, the wall surface cooling system comprises a bottom damp-proof layer, a framework, a bottom plate, a bottom thermal insulation layer, a surface thermal insulation layer, a wall surface cooling water pipe, a plaster surface, a water supply branch pipe, a backwater branch pipe, a water supply main pipe, a backwater main pipe and an outdoor cooling tower, the bottom damp-proof layer is arranged on the civil wall surface, the framework is arranged on the civil wall surface, the bottom plate is arranged on the framework, the bottom thermal insulation layer is arranged in the space between the bottom plate and the bottom damp-proof layer, the surface thermal insulation layer is arranged on the surface of the bottom plate, the wall surface cooling water pipe is arranged on the surface of the surface thermal insulation layer, the plaster surface is arranged on the surface of the surface thermal insulation layer, the thickness of the plaster surface is greater than the outer wall diameter of the wall surface cooling water pipe, one end of the wall surface cooling water pipe is connected to the water supply branch pipe and the other end is connected to the backwater branch pipe, the water supply branch pipe is connected to the water supply main pipe, the water supply main pipe is connected to the outdoor cooling tower, the backwater branch pipe is connected to the backwater main pipe, and the backwater main pipe is connected to the outdoor cooling tower.

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