Ground switching station with overhanging platform

Abstract

The utility model belongs to the technical field of hydropower station engineering, and particularly relates to a ground switching station with an overhanging platform. The system comprises a GIS building, an auxiliary factory building, an exhaust machine room, outgoing line equipment and a mountain platform arranged outside an outgoing line adit, the GIS building, the auxiliary factory building and the exhaust machine room are arranged on the mountain platform, and the GIS building and the auxiliary factory building are arranged in the area of the side, close to the outgoing line adit, of the mountain platform and are arranged at intervals in the width direction of the outgoing line adit. An extending platform is arranged in the area of the side, away from the wire outlet adit, of the GIS building, the extending platform comprises a supporting frame and a platform floor arranged on the top of the supporting frame, the wire outlet equipment is arranged on the platform floor of the extending platform, and the exhaust machine room is arranged on the side, away from the wire outlet adit, of the GIS building and arranged in the area below the platform floor of the extending platform. According to the utility model, the earthwork excavation volume and the slope excavation height can be reduced, so that the project investment is reduced, and the field safety of the switching station is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydropower station engineering, and specifically relates to a platform-extended ground switch station. Background Art

[0002] The switch station is one of the components of the water transmission and power generation system in the hydropower project. It is used to distribute high and medium voltage electric energy and selectively connect or disconnect the power system through the switch device. The ground switch station requires a certain area of ​​flat land for the layout of buildings and equipment including GIS building, ground auxiliary plant, outgoing line equipment, exhaust fan room, etc. Among them, "GIS" refers to the combination of electrical appliances, including circuit breakers, knife switches, and high-voltage busbars. If placed in a building, this building is called a GIS building. "Ground auxiliary plant" refers to a room dedicated to the layout of various electrical control equipment, power distribution devices, public auxiliary equipment, and production scheduling, maintenance, testing, etc. The outgoing line equipment mainly refers to equipment such as lightning arresters, SF6 / air outgoing line bushings, voltage transformers, and outgoing line structures.

[0003] Nowadays, many hydropower projects are built between high mountains and valleys, and ground switch stations are often arranged on steep slopes. Therefore, such switch stations will have a large amount of earth and stone excavation and a higher slope excavation height. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a platform-extended ground switch station which can reduce the amount of earth and stone excavation and lower the height of slope excavation.

[0005] In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: a platform-extended ground switch station, comprising a GIS building, an auxiliary plant, an exhaust fan room, an outgoing line equipment and a mountain platform arranged outside the outgoing line tunnel, the GIS building, the auxiliary plant and the exhaust fan room are arranged on the mountain platform, the GIS building and the auxiliary plant are both arranged in the area on the side of the mountain platform close to the outgoing line tunnel, and are arranged at intervals along the width direction of the outgoing line tunnel, an outgoing platform is arranged on the side of the GIS building away from the outgoing line tunnel, the outgoing platform comprises a support frame and a platform floor slab arranged on the top of the support frame, the support frame comprises a platform main beam, a platform column, a first diagonal brace and a concrete support, the platform The main beam includes a platform crossbeam and a platform longitudinal beam which are connected to each other. One end of the platform crossbeam is fixedly connected to the lower part of the structural column of the GIS building. The middle area of ​​the platform crossbeam is supported and fixed by the top of the platform column. The lower end of the platform column is fixedly set on the mountain platform. The end of the platform crossbeam away from the GIS building is supported and fixed by the top of the first diagonal brace. The lower end of the first diagonal brace is fixedly set on the concrete support. The concrete support is fixedly set on the slope below the mountain platform and anchored by anchor rods. The outgoing line equipment is arranged on the platform floor of the extended platform. The exhaust fan room is arranged on the side of the GIS building away from the outgoing line flat tunnel and is arranged in the lower area of ​​the platform floor of the extended platform.

[0006] A further preferred solution is that each first diagonal brace corresponds to a concrete support, and two adjacent first diagonal braces are connected by a second diagonal brace.

[0007] A further preferred solution is that a protective railing is provided on the top surface of the platform floor of the extended platform on the side facing the air.

[0008] A further preferred solution is that the exhaust outlet of the exhaust fan room is arranged on a side of the exhaust fan room away from the GIS building.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the outgoing line equipment is arranged on the platform floor of the extended platform, and the main structure of the extended platform is mainly supported and fixed by structures such as anchor rods, concrete supports, and the first diagonal brace arranged on the slope below the mountain platform, which can reduce the amount of earth and stone excavation on the site and the slope, and reduce the investment in the project; in addition, the specific layout structure of the extended platform also reduces the excavation height of the slope, increases the safety of the switch station site, and at the same time reasonably utilizes the space at the bottom of the extended platform to set up the exhaust fan room, making the layout more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the planar layout structure of the utility model.

[0011] Figure 2 for Figure 1 AA elevation diagram.

[0012] Figure 3 for Figure 1 BB elevation diagram.

[0013] Parts markings in the figure: outgoing line tunnel 1, mountain platform 2, GIS building 3, extended platform 4, platform beam 5, platform column 6, first diagonal brace 7, concrete support 8, anchor rod 9, auxiliary plant 10, exhaust fan room 11, guardrail 12, second diagonal brace 13, lightning arrester 14, SF6 / air outgoing line bushing 15, voltage transformer 16, outgoing line structure 17, road 18. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] See also Figures 1 to 3The utility model includes a GIS building 3, an auxiliary plant 10, an exhaust fan room 11, an outlet equipment and a mountain platform 2 arranged outside the outlet flat tunnel 1. The GIS building 3, the auxiliary plant 10 and the exhaust fan room 11 are arranged on the mountain platform 2. The GIS building 3 and the auxiliary plant 10 are arranged in the area of ​​the mountain platform 2 on the side close to the outlet flat tunnel 1, and are arranged at intervals along the width direction of the outlet flat tunnel 1. The GIS building 3 is provided with an extended platform 4 on the side away from the outlet flat tunnel 1. The extended platform 4 includes a support frame and a platform floor slab arranged on the top of the support frame. The support frame includes a platform main beam, a platform column 6, a first diagonal brace 7 and a concrete support 8. The platform main beam includes platform cross beams connected to each other. 5 and the platform longitudinal beam, one end of the platform crossbeam 5 is fixedly connected to the lower part of the structural column of the GIS building 3, the middle area of ​​the platform crossbeam 5 is supported and fixed by the top of the platform column 6, the lower end of the platform column 6 is fixedly set on the mountain platform 2, and the end of the platform crossbeam 5 away from the GIS building 3 is supported and fixed by the top of the first diagonal brace 7, the lower end of the first diagonal brace 7 is fixedly set on the concrete support 8, the concrete support 8 is fixedly set on the slope below the mountain platform 2 and anchored by the anchor rod 9; the outgoing line equipment is arranged on the platform floor of the extended platform 4, the exhaust fan room 11 is arranged on the side of the GIS building 3 away from the outgoing line flat tunnel 1, and is arranged in the lower area of ​​the platform floor of the extended platform 4. Among them, the outgoing line equipment mainly includes lightning arrester 14, SF6 / air outgoing line bushing 15, voltage transformer 16, outgoing line frame 17 and other equipment, which can be constructed and arranged according to the specifications of the existing switch station. The key technical point of the utility model is that, based on the GIS building 3 and the mountain platform 2, an extended platform 4 is added to arrange the outgoing line equipment. "Extended platform 4" means that one end extends out of the cliff. During the specific construction, the mountain is excavated first, the mountain platform 2 is arranged, and the slope support is carried out, and then the necessary building facilities such as the GIS building 3 and the auxiliary plant 10 are arranged on the mountain platform 2. After the concrete structure of the GIS building 3 is maintained, the extended platform 4 is arranged. After the extended platform 4 is arranged, the outgoing line equipment can be placed on the extended platform, and the SF6 / air outgoing line bushing 15 is led from the GIS building 3 to the extended platform 4.

[0016] The platform main beam, platform column 6, first diagonal brace 7 and other structural members can preferably adopt steel structural members. When they are specifically connected with concrete structures (such as structural columns of GIS building 3 and concrete support 8), the steel structural members can be connected to the corresponding concrete structure by means of anchor plates and bolts. Of course, in some alternative embodiments, the platform main beam, platform column 6 and other structural members can also be made of reinforced concrete structural members as a whole or in part. When the anchor rod 9 of the concrete support 8 is constructed, the influence of geological conditions should be fully considered and appropriate parameters should be selected to ensure the stability and safety of the platform structure.

[0017] To further improve the structural reliability of the extended platform 4, each first diagonal brace 7 generally corresponds to a concrete support 8, and two adjacent first diagonal braces 7 are connected by a second diagonal brace 13. The connection point of the second diagonal brace 13 is usually set near the concrete support 8 and the platform cross beam 5.

[0018] In order to further improve the safety of the extended platform 4 , a protective railing 12 is provided on the top surface of the platform floor of the extended platform 4 on the side facing the air.

[0019] In order to further reduce the influence of the exhaust equipment on the switch station during operation, the exhaust outlet of the exhaust fan room 11 is arranged on the side of the exhaust fan room 11 away from the GIS building 3, that is, the exhaust outlet is arranged on the side close to the cliff.

[0020] It is understandable that in addition to the necessary buildings and equipment mentioned above, the switch station can also add roads 18 according to the overall layout of the above structure. The internal roads of the switch station itself usually adopt ring roads, and then a guard room is set at a suitable location according to the layout of the road.

[0021] The ground switch station of the utility model is suitable for being arranged in steep mountainous areas and river valley areas.

Claims

1. A platform-extended ground switch station, comprising a GIS building (3), an auxiliary plant (10), an exhaust fan room (11), outgoing line equipment and a mountain platform (2) arranged outside the outgoing line flat tunnel (1), wherein the GIS building (3), the auxiliary plant (10) and the exhaust fan room (11) are arranged on the mountain platform (2), and characterized in that: The GIS building (3) and the auxiliary plant (10) are both arranged in the area of ​​the mountain platform (2) close to the outlet tunnel (1) and are arranged at intervals along the width direction of the outlet tunnel (1). An extended platform (4) is arranged in the area of ​​the GIS building (3) away from the outlet tunnel (1). The extended platform (4) includes a support frame and a platform floor slab arranged on the top of the support frame. The support frame includes a platform main beam, a platform column (6), a first diagonal brace (7) and a concrete support (8). The platform main beam includes a platform cross beam (5) and a platform longitudinal beam connected to each other. One end of the platform cross beam (5) is fixedly connected to the lower part of the structural column of the GIS building (3). The middle area is supported and fixed by the top of the platform column (6), the lower end of the platform column (6) is fixedly arranged on the mountain platform (2), the end of the platform crossbeam (5) away from the GIS building (3) is supported and fixed by the top of the first diagonal brace (7), the lower end of the first diagonal brace (7) is fixedly arranged on a concrete support (8), and the concrete support (8) is fixedly arranged on the slope below the mountain platform (2) and anchored by an anchor rod (9); the outgoing line equipment is arranged on the platform floor slab of the extended platform (4), and the exhaust fan room (11) is arranged on the side of the GIS building (3) away from the outgoing line flat hole (1), and is arranged in the area below the platform floor slab of the extended platform (4).

2. The platform-extended ground switch station according to claim 1, characterized in that: Each first diagonal brace (7) corresponds to a concrete support (8), and two adjacent first diagonal braces (7) are connected via a second diagonal brace (13).

3. The platform-extended ground switch station according to claim 1, characterized in that: A protective railing (12) is arranged on the top surface of the platform floor of the extended platform (4) on the side facing the air.

4. The platform-extended ground switch station according to any one of claims 1 to 3, characterized in that: The exhaust port of the exhaust fan room (11) is arranged on a side of the exhaust fan room (11) away from the GIS building (3).

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