High-position multilayer support device for GIL bus

Abstract

The utility model discloses a high-position multilayer support device for a GIL bus, which belongs to the technical field of rigid gas insulated transmission lines and comprises a support welding device 1, the support welding device 1 comprises a plurality of support legs 102 fixed on a bottom mounting plate 101, and the support legs 102 are respectively positioned among A-phase equipment, B-phase equipment and C-phase equipment of the GIL bus; the plurality of connecting cross beams 103 are horizontally connected between the two supporting legs 102; the cross arm 105 is fixed at the tops of the two supporting legs 102, the plurality of reinforcing ribs 104 are fixed between the outer sides of the two supporting legs 102 and the bottom of the cross arm 105, and the reinforcing ribs 104, the supporting legs 102 and the cross arm 105 form a triangle. According to the high-position multi-layer support device for the GIL bus, the foundation occupied area is reduced by 65%, a large amount of civil engineering cost is saved, meanwhile, engineering arrangement is more convenient, meanwhile, a large amount of work is saved during site construction, other GIL buses are not prone to being collided, and safety is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rigid gas-insulated transmission lines, and particularly to a high-position multi-layer support device for rigid gas-insulated transmission lines. BACKGROUND

[0002] In the GIL busbar installation mode, the GIL busbar support is usually simple in structure, for example, a single-layer support is low in space utilization efficiency, so that the GIL busbar is installed by using a high-position multi-layer support device, and reasonable layout can be performed in the vertical space, but the support type of the prior art is a large-span support leg type support scheme, two support legs are respectively arranged outside the GIL three-phase shell, and a plurality of cross arms are respectively arranged on the two support legs, so that the A, B and C three phases of the GIL device are all contained in the support frame. The support leg spacing of this support type is about 3 times the GIL busbar phase spacing, and the support foundation area is also increased synchronously, which cannot meet the requirement of reasonable layout of the GIL busbar in the limited space; at the same time, since the two support legs in the support welding are located outside the A and C phase devices, the three-phase devices are all inside the support legs, and when the GIL busbar is maintained and disassembled, the A, B and C three-phase busbars cannot be directly pushed out of the support range from the side, and two cranes are required to cooperate to lift the whole to a certain angle and then horizontally move out of the support range, which is inconvenient to hoist and is easy to collide, since the GIL busbar is filled with insulating gas during operation, collision may cause gas leakage and other faults. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to provide a method for solving the problems of low space utilization efficiency and inconvenient hoisting of the GIL busbar support installation.

[0004] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0005] A high-position multi-layer support device for a GIL busbar, comprising: a support welding, the support welding comprising: a plurality of first support legs fixed on a bottom mounting plate, the first support legs being respectively located between the devices of A phase, B phase and C phase of the GIL busbar; a plurality of connecting cross beams horizontally connected between the first support legs; a first cross arm fixed at the top of the plurality of first support legs; and a first reinforcing rib fixed between the outside of the first support leg and the bottom of the first cross arm.

[0006] Optionally, the high-position multi-layer support device for the GIL busbar further comprises: a detachable support assembly, the detachable support assembly comprising: a plurality of second support legs, the second support legs being respectively located between the devices of A phase, B phase and C phase of the GIL busbar; a second cross arm, the top of the plurality of second support legs being fixed with the second cross arm; and a plurality of second reinforcing ribs, the second reinforcing ribs being fixed between the outside of the second support leg and the bottom of the second cross arm.

[0007] Optionally, the high-position multi-layer support device for the GIL bus further comprises a GIL support structure, the A-phase, B-phase and C-phase of the GIL bus are installed on the GIL support structure; a connecting bolt, the second leg is installed on the first cross arm and the second cross arm via the connecting bolt, and the GIL support structure is installed on the first cross arm and the second cross arm via the connecting bolt; and a magnetic isolation gasket, the magnetic isolation gasket is arranged between the second leg and the first cross arm and the second cross arm.

[0008] Optionally, the distance between the first leg and the second leg is equal to the phase distance of the GIL bus; the first reinforcing rib, the first leg and the first cross arm form a triangle, the second reinforcing rib, the second leg and the second cross arm form a triangle; the plurality of first legs comprises two first legs, the plurality of second legs comprises two second legs, the plurality of first reinforcing ribs comprises two first reinforcing ribs, and the plurality of second reinforcing ribs comprises two second reinforcing ribs.

[0009] Optionally, the first leg and the second leg are respectively aligned in the vertical direction.

[0010] Optionally, the length of the first cross arm and the second cross arm is consistent and greater than twice the phase distance of the GIL bus, the first cross arm and the second cross arm extend to the outside of the first leg and the second leg, and the length of the extension to the outside of the first leg and the second leg is equal.

[0011] Optionally, the distance between the A-phase, B-phase and C-phase of the GIL bus is consistent, the A-phase and the C-phase of the GIL bus are located outside the first leg and the second leg, and the B-phase of the GIL bus is located inside the first leg and the second leg.

[0012] Optionally, the first cross arm and the second cross arm comprise a reserved mounting hole, and the GIL support structure is installed on the mounting hole via the connecting bolt.

[0013] Optionally, the GIL support structure is a height-adjustable structure.

[0014] Optionally, the surface of the bracket welding and the detachable bracket assembly has a zinc layer.

[0015] The installation method of the high multi-layer support device for the GIL bus provided by the application can reduce the foundation area of the high multi-layer support device for the GIL bus by 65%, save a large amount of civil engineering cost, and be more convenient in engineering arrangement. The A-phase and C-phase GIL bus equipment are placed outside the frame, and can be directly hoisted horizontally from the side of the high multi-layer support device for the GIL bus during maintenance and disassembly. Only the B-phase bus needs to be hoisted by two cranes to a certain angle and then moved horizontally out of the range of the high multi-layer support device for the GIL bus during maintenance, which saves a lot of work during on-site construction and is less likely to bump into other GIL buses, and is safer.

[0016] In order to make the above features and advantages of the application more obvious and easy to understand, the following specific examples are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the high multi-layer support device for the GIL bus. DETAILED DESCRIPTION

[0018] In order to make the above features and advantages of the application more obvious and easy to understand, the following specific examples are described in detail below with reference to the accompanying drawings.

[0019] In an embodiment of the application, please refer to Figure 1 The high multi-layer support device for the GIL bus provided by the application comprises a support welding 1, and the support welding 1 comprises a plurality of first legs 102 fixed on a bottom mounting plate 101, the first legs 102 are respectively located between A-phase, B-phase and C-phase GIL bus equipment, and the spacing size of the first legs 102 is equal to the phase spacing of the GIL bus; a plurality of connecting cross beams 103 are horizontally connected between two first legs 102; a first cross arm 105 is fixed at the top of the two first legs 102, a plurality of first reinforcing ribs 104 are fixed between the outside of the first legs 102 and the bottom of the first cross arm 105, and the first reinforcing ribs 104, the first legs 102 and the first cross arm 105 form a triangular shape.

[0020] As an example, the GIL bus high multi-layer support device provided by the application further comprises: a detachable support assembly 4, comprising: a plurality of second legs 202, a plurality of second reinforcing ribs 204, and a second cross arm 205, the second legs 202 are respectively located between the A, B, and C three-phase devices of the GIL bus, and the spacing size of the second legs 202 is equal to the phase spacing of the GIL bus; the second cross arm 205 is fixed at the top of the two first legs 102, the plurality of second reinforcing ribs 204 are fixed between the outside of the second legs 202 and the bottom of the second cross arm 205, and the second reinforcing ribs 204, the second legs 202, and the second cross arm 205 form a triangular shape. A connecting bolt 2 is used to connect the second legs 202 and the first cross arm 105, and is also used to connect the GIL support structure 5 and the first cross arm 105; the GIL support structure 5 is used to install the A, B, and C three-phase of the GIL bus, and the GIL support structure 5 adopts a structure that can adjust the height; and a magnetic shielding gasket 3 is located between the second legs 202 of the detachable support assembly 4 and the first cross arm 105.

[0021] As an example, the embodiment of the application comprises two first legs 102, two second legs 202, two first reinforcing ribs 104, and two second reinforcing ribs 204.

[0022] As an example, the two first legs 102 and the two second legs 202 are respectively aligned in the vertical direction, the lengths of the first cross arm 105 and the second cross arm 205 are consistent and greater than twice the phase spacing of the GIL bus, the first cross arm 105 and the second cross arm 205 extend to the outside of the first legs 102 and the second legs 202, and the lengths of the extensions to the outside of the first legs 102 and the second legs 202 are equal; the heights of the first legs 102 and the second legs 202 are adjusted according to the construction needs.

[0023] As an example, the spacing of the A, B, and C three-phase of the GIL bus is consistent, the A and C phases are located outside the first legs 102 and the second legs 202, and the B phase is located inside the first legs 102 and the second legs 202.

[0024] As an example, the installation method of the GIL bus high multi-layer support device of the application can comprise the following steps: S1-S3.

[0025] In step S1, before installing the GIL bus high multi-layer support device, the support welding assembly 1 needs to be welded first, the support welding assembly 1 is integrally welded and formed, and the whole is subjected to hot galvanizing treatment after welding and forming to prevent corrosion.

[0026] As an example, the height of the support welding assembly 1 is determined by engineering arrangement, and the overall height of the support welding assembly 1 can be changed by adjusting the height of the first leg 102. The overall height of the detachable support assembly 4 can also be changed by adjusting the height of the second leg 202.

[0027] In step S2, the support welding 1 is first lifted into position on the support foundation and then fixed.

[0028] As an example, the fixing of the support welding 1 can be by welding to a pre-embedded iron plate on the foundation, or by installing a mechanical or chemical anchor on the cement foundation.

[0029] In step S3, after the support welding 1 is fixed in position, the first layer of GIL bus is installed.

[0030] As an example, the GIL support structure 5 is first installed in position on the first cross arm 105 at the pre-arranged mounting hole, and is fixed with connecting bolts 2. After the GIL support structure 5 is in position, the A, B, and C three-phase GIL bus is installed in sequence. The GIL support structure 5 has an adjustable height structure, and after the three-phase GIL bus is in position, the height of the GIL support structure 5 is adjusted in combination with height measurement and levelness measurement, so that the GIL three-phase bus reaches the design elevation.

[0031] As an example, after the first layer of GIL bus is complete, the detachable support assembly 4 is installed. After the detachable support assembly 4 is in position at the mounting position, a magnetic isolation gasket 3 is inserted between the support leg of the detachable support assembly 4 and the first cross arm 105 of the support welding 1, to avoid forming a closed ferromagnetic body around the B-phase of the first layer of GIL bus between the first cross arm 105, the second support leg 202, and the second cross arm 205, to prevent the GIL bus high-level multi-layer support device from abnormally heating due to the electromagnetic induction of the GIL bus. When installing the detachable support assembly 4, attention should be paid to the protection of the installed GIL bus to prevent damage from bumps, gas leakage accidents, etc.

[0032] Further, after the first layer of GIL bus equipment is installed, the second layer of GIL bus equipment is installed, and the installation method is the same as that of the first layer of GIL bus, which will not be repeated here.

[0033] Further, according to the needs of the project layout, the required number of layers of detachable support assemblies 4 can be further arranged upward for the installation of multi-layer GIL bus.

[0034] As an example, the application provides a high multi-layer support device for GIL bus, after installation, when disassembly is needed, since the A and C phases of the GIL bus are outside the first leg 102 and the second leg 202, without the block of the first leg 102 and the second leg 202, the A and C phase bus can be directly pushed out of the range of the high multi-layer support device for GIL bus from the side after disassembly, and during installation, the high multi-layer support device for GIL bus can also be pushed into the installation position from the side.

[0035] As an example, the application provides a mounting method of the high multi-layer support device for GIL bus, which can reduce the base area of the high multi-layer support device for GIL bus by 65%, save a large amount of civil engineering cost, and be more convenient during engineering arrangement. The A and C phases of the GIL bus equipment are placed outside the frame, and during disassembly, the A and C phases can be directly hoisted horizontally from the side of the high multi-layer support device for GIL bus. Only the B phase bus needs two cranes to cooperate to hoist the whole body, tilt to a certain angle, and then move horizontally out of the range of the high multi-layer support device for GIL bus, which saves a large amount of work during on-site construction, and is not easy to knock other GIL buses, and is safer.

[0036] Although the application has been disclosed as above, it is not intended to limit the application, and anyone with ordinary knowledge in the art can make some changes and modifications without departing from the spirit and scope of the application. Therefore, the protection scope of the application shall be subject to the appended patent claim.

Claims

1. A high-level multi-layer support device for GIL busbars, characterized in that, include: The bracket welding assembly includes: multiple first legs fixed to the bottom mounting plate, the first legs being located between the equipment of phase A, phase B and phase C of the GIL busbar respectively; multiple connecting beams horizontally connected between the first legs; a first crossarm fixed to the top of the multiple first legs; and a first reinforcing rib fixed between the outer side of the first legs and the bottom of the first crossarm. The high-level multi-layer support device for the GIL busbar further includes: a detachable support assembly, which includes: multiple second legs, the second legs being located between the equipment of phase A, phase B and phase C of the GIL busbar respectively; a second crossarm, the top of the multiple second legs being fixed to the second crossarm; and multiple second reinforcing ribs, the outer side of the second legs being fixed between the second reinforcing ribs and the bottom of the second crossarm. The high-level multi-layer support device for the GIL busbar also includes: connecting bolts, and the second leg is installed on the first crossarm and the second crossarm via the connecting bolts.

2. The high-level multi-layer support device for GIL busbars as described in claim 1, characterized in that, Also includes: GIL support structure, wherein phases A, B and C of the GIL busbar are mounted on the GIL support structure, and the GIL support structure is mounted on the first crossarm and the second crossarm via the connecting bolts; magnetic shielding gasket, wherein a magnetic shielding gasket is installed between the second leg and the first crossarm and the second crossarm.

3. The high-level multi-layer support device for GIL busbars as described in claim 1, characterized in that, The spacing between the first leg and the second leg is equal to the phase spacing of the GIL busbar; the first reinforcing rib forms a triangle with the first leg and the first crossarm, and the second reinforcing rib forms a triangle with the second leg and the second crossarm; the plurality of first legs includes two first legs, the plurality of second legs includes two second legs, the plurality of first reinforcing ribs includes two first reinforcing ribs, and the plurality of second reinforcing ribs includes two second reinforcing ribs.

4. The high-level multi-layer support device for GIL busbars as described in claim 3, characterized in that, The first leg and the second leg are aligned vertically.

5. The high-level multi-layer support device for GIL busbars as described in claim 4, characterized in that, The first crossarm and the second crossarm are of the same length and are greater than twice the phase spacing of the GIL busbar. The first crossarm and the second crossarm extend to the outside of the first leg and the second leg, and the lengths extending to the outside of the first leg and the second leg are equal.

6. The high-level multi-layer support device for GIL busbars as described in claim 5, characterized in that, The spacing between phases A, B, and C of the GIL busbar is consistent. Phases A and C of the GIL busbar are located outside the first and second legs, while phase B of the GIL busbar is located inside the first and second legs.

7. The high-level multi-layer support device for GIL busbars as described in claim 2, characterized in that, The first crossarm and the second crossarm include reserved mounting holes, and the GIL support structure is mounted on the mounting holes via the connecting bolts.

8. The high-level multi-layer support device for GIL busbars as described in claim 7, characterized in that, The GIL support structure is height-adjustable.

9. The high-level multi-layer support device for GIL busbars as described in claim 1, characterized in that, The surface of the bracket welded to the detachable bracket has a zinc layer.

Images