GIL bus butt joint tool

Abstract

The invention provides a GIL bus butt joint tool which comprises a supporting plate, and the upper end of the supporting plate is provided with a bearing face used for bearing a GIL bus. The supporting plate is provided with a positioning sliding groove extending downwards from the bearing face, and the length of the positioning sliding groove meets the requirement that when the positioning sliding groove corresponds to a bolt reserved in a GIL cylinder end flange hole and the supporting plate is inserted into a gap from bottom to top from the gap between two GIL cylinder end flanges, the GIL bus can be borne through the bearing face. The supporting plate is further provided with a mounting hole corresponding to the position of a cylinder end flange hole. According to the GIL bus supporting structure, the positioning sliding groove corresponds to a bolt reserved on the flange plate, and the supporting plate slides to the bearing surface along the bolt to be attached to the GIL bus, so that coaxial matching of the mounting hole and the through hole in the flange plate can be completed, and the positioning and mounting process of the GIL bus supporting structure is simplified.

Description

Technical Field

[0001] The invention relates to the field of GIL busbar assembly equipment, and in particular to a GIL busbar docking tool. Background Art

[0002] GIL is a gas-insulated combined circuit for high-voltage switches. Long-distance GIL lines require the GIL line units to be connected to each other. The prior art generally uses a retractable lifting trolley with an arc-shaped support structure to lift the cylinder of the GIL line unit. The Chinese utility model patent with announcement number CN218364378U provides a GIL cylinder connection and lifting tooling, which places the GIL cylinder on its arc-shaped support surface and uses a motor to drive the support shaft to lift the GIL cylinder to complete the connection or disassembly of the GIL line units.

[0003] However, there are some problems in the prior art when disassembling the GIL line unit, such as Figure 1-4 The disassembly and assembly process of the two sets of GIL line units shown in FIG. Figure 1 , Figure 2 The figure shows two groups of GIL line units that have been butted together. The GIL cylinder 11 is supported by the cylinder support 13. The GIL busbar 10 is supported by multiple support insulators 12 inside the two groups of GIL cylinders 11 that have been connected. The two groups of GIL busbars 10 are plug-in connected by the conductor connector 14 set at the end of the GIL busbar 10 and the contact finger connector 15 at the end. The two groups of GIL cylinders 11 are butted together by threaded fasteners through the GIL cylinder end flanges 6 of the two GIL line units. When disassembling, Figure 3 , the GIL tube end flanges 6 of the two sets of GIL line units are separated by a gap, but the two sets of GIL busbars 10 are not completely separated; Figure 4 , because there is only one support insulator 12 (set at the left end in the figure) at the overlap of the two sets of GIL busbars 10, and the support insulator 12 on the right GIL busbar 10 closest to the overlap is at a certain distance from the overlap, after the two sets of GIL line units are completely separated, the connection end of the right GIL busbar 10 will sink due to its own gravity G, and at the same time, an upward force F will be generated on the support insulator 12 through which the right GIL busbar 10 passes, which may damage the right support insulator 12. Therefore, during the disassembly of the two sets of GIL line units, if the two sets of GIL busbars 10 are not separated (such as Figure 3 ), it is necessary to provide temporary support for the GIL busbar 10 (the GIL busbar 10 on the right in the figure) that lacks end support.

[0004] The Chinese invention patent with announcement number CN110544898B provides a tooling auxiliary device for installing a conductive rod. The device is an assembled support structure installed on the flange plate at the end of the GIL cylinder. When installing the GIL busbar in the GIL cylinder, it temporarily supports the GIL busbar and ensures that the GIL busbar is on the axis. When disassembling two groups of GIL line units, the device can be used to provide temporary support for the GIL busbar. Specifically, the butt flange of the GIL cylinder is first disassembled to separate the two GIL cylinder end flanges to leave a gap sufficient to install the support structure, keep the two GIL busbars from being completely separated, and install the support structure on the GIL cylinder flange plate where the GIL busbar without support is located to ensure that the GIL busbar without support will not sink or bend during the disassembly process.

[0005] However, this device is not specifically used for supporting the busbar when disassembling the GIL line unit, and there are many inconveniences in its use. When disassembling two sets of GIL line units, in order to ensure that the GIL busbar without support will not fall off, it is necessary to ensure that the interval between the two sets of GIL cylinders is very small to ensure that the two GIL busbars are not completely separated. Under this premise, temporary support is provided for the GIL busbar; in a narrow environment, the operator cannot quickly connect the mounting holes at both ends of the support structure with the flange holes at the GIL cylinder end, and the positioning and installation operations are complicated and time-consuming. Summary of the invention

[0006] The object of the present invention is to provide a GIL busbar docking tooling to solve the problems of difficult positioning and installation and long installation time of the GIL busbar docking auxiliary tooling in the prior art.

[0007] In order to solve the problems existing in the prior art, the present invention provides a GIL busbar docking tooling, including a support plate, wherein a supporting surface for supporting the GIL busbar is provided at the upper end of the support plate; a positioning slide groove extending downward from the supporting surface is provided on the support plate, and the length of the positioning slide groove satisfies: when the positioning slide groove corresponds to the bolt reserved in the GIL tube end flange hole and the support plate is inserted into the gap from bottom to top from the gap between the two GIL tube end flanges, the GIL busbar can be supported by the supporting surface; the support plate is also provided with a mounting hole corresponding to the position of the GIL tube end flange hole.

[0008] Furthermore, the supporting surface is symmetrical about the positioning groove.

[0009] Furthermore, the supporting surface is a V-shaped surface, or the supporting surface is an arc-shaped surface adapted to the outer peripheral surface of the GIL busbar.

[0010] Furthermore, the mounting holes are provided on both sides of the positioning slide groove, and the mounting holes are arranged symmetrically with respect to the positioning slide groove.

[0011] Furthermore, the length of the positioning groove satisfies: when the positioning groove corresponds to the bolts reserved in the flange hole of the GIL tube end and the support plate is inserted into the gap between the two GIL tube end flanges from bottom to top until the supporting surface supports the GIL busbar, the bottom end of the positioning groove corresponds exactly to the flange hole of the GIL tube end.

[0012] Furthermore, a hand hole is provided at the bottom of the pallet to facilitate manual grasping of the pallet and installation.

[0013] Furthermore, when the support plate is inserted into the gap between the two GIL cylinder end flanges from bottom to top until the supporting surface supports the GIL busbar, the corresponding maximum central angle between the two side edges of the support plate in the circumferential direction is no more than 180°.

[0014] Beneficial effects: The present invention provides a pioneering GIL busbar docking tool, including a support plate, the upper end of which is provided with a supporting surface for carrying the GIL busbar; a positioning slot extending downward from the supporting surface is provided on the support plate, and the length of the positioning slot satisfies: when the positioning slot corresponds to the bolt reserved in the flange hole of the GIL barrel end and the support plate is inserted into the gap between the two GIL barrel end flanges from bottom to top, the GIL busbar can be supported by the supporting surface; the support plate is also provided with a mounting hole corresponding to the position of the barrel end flange hole. By making the positioning slot correspond to a bolt reserved for installation on the flange plate and sliding the support plate along the bolt until the supporting surface fits the GIL busbar, the coaxial positioning of the mounting hole and the through hole on the flange plate can be completed, simplifying the positioning operation and installation process of the GIL busbar in a disassembled, temporary support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the connection between two groups of GIL line units; Figure 2 It is an enlarged structural diagram of area a in the schematic diagram of connecting two groups of GIL line units; Figure 3 It is a structural schematic diagram when the barrel end flanges of two sets of GIL line units are separated, but the two sets of GIL busbars are not completely separated; Figure 4 It is a schematic diagram of the structure in which two groups of GIL line units are completely separated; Figure 5 This is the overall structural main view of the GIL busbar docking tooling; Figure 6 This is a schematic diagram of the GIL busbar docking tool supporting the busbar vertically perpendicular to the busbar axis; Figure 7 This is a schematic diagram of the GIL busbar docking fixture supporting the busbar at a certain angle when the installation space at the bottom of the GIL busbar is limited; Figure 8 This is a schematic diagram of using two GIL busbar docking fixtures to support the busbar; Fig. 9 Schematic diagram of the pins used in the GIL busbar docking fixture.

[0016] In the figure: 1. support plate; 2. supporting surface; 3. positioning slide groove; 4. mounting hole; 5. hand hole; 6. GIL cylinder end flange; 7. bolt; 8. pin; 9. GIL cylinder end flange hole; 10. GIL busbar; 11. GIL cylinder; 12. supporting insulator; 13. cylinder support; 14. conductor joint; 15. finger joint. DETAILED DESCRIPTION

[0017] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0018] The principle and concept of the present invention is to design a GIL busbar docking tooling, including a support plate, a supporting surface for supporting the GIL busbar is provided on the top of the support plate, the support plate can be installed on the GIL barrel end flange, and a self-positioning structure is also provided on the support plate, including a positioning slide groove and a mounting hole for correspondingly connecting with the GIL barrel end flange hole. The positioning slide groove extends downward along the supporting surface. When disassembling two groups of GIL line units, the threaded fasteners on the two GIL barrel end flanges are first removed, and only a bolt located in the lower half of the GIL busbar is retained. The support plate is inserted into the gap between the two GIL barrel end flanges along the positioning slide groove and the bolt. When the supporting surface is in contact with the GIL busbar, the mounting hole can automatically correspond to the GIL barrel flange hole, and the support plate is fixed to the GIL barrel end flange by installing a pin in the mounting hole.

[0019] Based on the above principles and concepts, the present invention provides multiple embodiments of the GIL busbar docking tooling for further explanation.

[0020] Based on the above principles and concepts, in a basic embodiment, as Figure 5-6In the embodiment provided, the GIL busbar docking tooling includes a support plate 1, a support surface 2 for carrying the GIL busbar 10 is provided at the upper end of the support plate 1, a positioning slide groove 3 extending downward from the support surface 2 and having a certain extension length is also provided on the support plate 1, and a mounting hole 4 for coaxially cooperating with the GIL barrel end flange hole 9 is also provided on the support plate 1. When the support plate 1 is used to support the GIL busbar 10, a certain gap is removed between the two GIL barrel end flanges 6, and the two GIL busbars 10 are not completely separated, and all the parts used to connect the two GIL barrel end flanges 6 are removed. Threaded fasteners, but retain a bolt 7 on a GIL cylinder end flange hole 9 in the lower half of the GIL busbar 10, slide the reserved bolt 7 into the positioning groove 3 through the supporting surface 2, and push the support plate 1 toward the GIL busbar 10 along the bolt 7 through the positioning groove 3 until the supporting surface 2 is in contact with the circumferential surface of the GIL busbar 10. Therefore, the length of the positioning groove 3 needs to meet the requirement that when the reserved bolt 7 is in contact with the bottom of the positioning groove 3 or before being in contact, the supporting surface 2 has been in contact with the circumferential surface of the GIL busbar 10 and supports the GIL busbar.

[0021] On the basis of the above embodiment, in one embodiment, the positioning slot 3 is obliquely arranged on the support plate 1. In a more preferred embodiment, as Figure 5 In the provided embodiment, the positioning slot 3 is provided on the support plate 1 and the supporting surface 2 is symmetrical about the positioning slot 3. The positioning slot 3 provided in this way can make the pressure on the support plate 1 more uniform and improve the structural strength.

[0022] On the basis of the above embodiments, in one embodiment, the supporting surface 2 is set as a plane. The supporting surface 2 set in this way can only play a vertical supporting role for the GIL busbar 10, and cannot prevent the GIL busbar 10 from moving in other directions; in a more preferred embodiment, as Figure 5-8 In the provided embodiment, the supporting surface 2 is configured as an arc-shaped surface that fits the outer peripheral surface of the GIL busbar 10, so that while supporting the GIL busbar 10, the GIL busbar 10 can be prevented from being offset in other directions, and the force-bearing area of ​​the pressure-bearing surface 2 is increased, thereby improving the overall structural strength of the support plate 1; in another embodiment, the supporting surface 2 can also be configured as a V-shaped surface, and the supporting surface 2 of the V-shaped surface structure can adapt to GIL busbars 10 of different diameters; the supporting surface 2 of the V-shaped surface structure and the supporting surface 2 of the arc-shaped surface structure also have a certain guiding effect on the bolt 7, thereby facilitating the bolt 7 to slide into the positioning groove 3.

[0023] Based on the above embodiments, in one embodiment, Figure 5-8 In the provided embodiment, a plurality of mounting holes 4 are evenly disposed on both sides of the positioning slide groove 3 , and the plurality of mounting holes 4 are symmetrically arranged with respect to the positioning slide groove 3 .

[0024] On the basis of the above embodiments, in one embodiment, the length of the positioning slot 3 is set to be longer. When the support plate 1 is inserted into the gap between the two GIL tube end flanges 6 along the bolt 7 through the positioning slot 3, the operator can only push the support plate 1 to control the support surface 2 to fit with the GIL busbar 10, and judge whether the installation angle of the support plate 1 is correct by the coaxial matching of the mounting hole 4 and the corresponding GIL tube end flange hole 9; in another embodiment, Figure 5-8 In the provided embodiment, the bottom end of the positioning groove 3 corresponds exactly to the flange hole 9 of the GIL tube end, and the positioning groove 3 is pushed from bottom to top along the bolts 7 reserved on the flange hole 9 of the GIL tube end. When the bolts 7 are in contact with the bottom of the positioning groove 3, the supporting surface 2 can be in contact with the circumferential surface of the GIL busbar 10.

[0025] On the basis of the above embodiment, in one embodiment, the operator holds the left and right ends of the support plate 1 to insert the support plate 1 into the gap between the two GIL cylinder flanges 6. In a more preferred embodiment, as Figure 5 In the provided embodiment, a hand hole 5 is provided near the bottom of the support plate 1, so that the operator can lift the support plate 1 and install it more conveniently, comfortably and stably.

[0026] Based on the above embodiments, in one embodiment, Figure 5 , Figure 8 In the provided embodiment, the angle between the two side edges of the support plate 1 in the circumferential direction and the support plate body does not exceed 180°. By setting the support plate 1 with an edge angle less than 180°, it is possible to set two support plates 1 on the GIL cylinder end flange 6 to increase the area of ​​the supporting surface for supporting the GIL busbar 10, thereby providing a wider angle and more stable support for the GIL busbar 10.

[0027] Based on the above embodiments, since some GIL line units are installed outdoors, due to the limitations of the installation environment, there may not be enough space to install the support plate 1 directly below the GIL busbar 10. Figure 7 In the embodiment shown, the mounting angle of the support plate 1 is adjusted to support the GIL busbar 10; or Figure 8 In the provided embodiment, support plates 1 are installed at both ends of the GIL busbar 10 to provide all-round support for the GIL busbar 10, so as to ensure that the GIL busbar 10 can also be effectively supported when the GIL cylinder 11 rolls circumferentially.

[0028] When the GIL busbar docking tool of the present invention is used, Figure 3 , Figure 5-7 , Fig. 9In the provided embodiment, two sets of GIL cylinder end flanges 6 are disassembled to create a gap. On the premise that the two sets of GIL busbars 10 are not completely separated, a bolt 7 is reserved on the GIL cylinder end flange 6, and all other bolts and nuts are removed, the supporting surface 2 of the support plate 1 is fitted with the bolt 7, the angle of the support plate 1 is adjusted, and the support plate 1 is inserted into the gap between the two GIL cylinder end flanges 6 along the bolt 7 through the positioning slide groove 3. After the bottom of the positioning slide groove 3 is fitted with the bolt 7, the supporting surface 2 is fitted with the circumferential surface of the GIL busbar 10, and the mounting hole 4 on the support plate 1 is automatically coaxially matched with the GIL cylinder end flange hole 9. After the pin 8 is installed in the mounting hole 4 and the GIL cylinder end flange hole 9 to fix the support plate 1, the GIL busbar can be temporarily supported.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A GIL busbar docking tool, characterized in that: It includes a support plate, the upper end of which is provided with a supporting surface for carrying the GIL busbar; a positioning slide groove extending downward from the supporting surface is provided on the support plate, and the length of the positioning slide groove satisfies: when the positioning slide groove corresponds to the bolts reserved in the flange hole of the GIL tube end and the support plate is inserted into the gap between the two GIL tube end flanges from bottom to top, the GIL busbar can be supported by the supporting surface; the support plate is also provided with a mounting hole corresponding to the position of the flange hole of the GIL tube end.

2. A GIL busbar docking tool according to claim 1, characterized in that: The supporting surface is symmetrical about the positioning groove.

3. A GIL busbar docking tool according to claim 2, characterized in that: The supporting surface is a V-shaped surface, or the supporting surface is an arc-shaped surface adapted to the outer peripheral surface of the GIL busbar.

4. The GIL busbar docking tool according to claim 2 is characterized in that: The mounting holes are provided on both sides of the positioning slide groove, and the mounting holes are arranged symmetrically with respect to the positioning slide groove.

5. A GIL busbar docking tool according to any one of claims 1 to 4, characterized in that: The length of the positioning slot satisfies that: when the positioning slot corresponds to the bolts reserved in the flange hole of the GIL tube end and the support plate is inserted from bottom to top into the gap between the two GIL tube end flanges until the supporting surface supports the GIL busbar, the bottom end of the positioning slot exactly corresponds to the flange hole of the GIL tube end.

6. A GIL busbar docking tool according to any one of claims 1 to 4, characterized in that: There is a hand hole at the bottom of the pallet to facilitate manual grabbing and installation of the pallet.

7. A GIL busbar docking tool according to any one of claims 1 to 4, characterized in that: When the support plate is inserted into the gap between the two GIL cylinder end flanges from bottom to top until the supporting surface supports the GIL busbar, the corresponding maximum central angle between the two side edges of the support plate in the circumferential direction is not greater than 180°.

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