Universal support and method for gas insulation transformer

Abstract

The invention relates to a universal support and method for a gas insulation transformer, and belongs to the technical field of gas insulation transformers. According to the technical scheme, when the transformer is transported, the dry air bottle support is used for enabling the dry air bottle to occupy the space of an original control box, and when the gas insulation transformer is in a working state, after the dry air bottle support is detached, a back fixing plate and a bottom supporting frame on a gas box serve as the support of the control box; the control box and the dry air bottle support share one back fixing plate, and only space needed by the control box needs to be reserved when the wall of the air box is arranged. The control box needs to be disassembled and transported during transportation, the dry air bottle only needs to be installed during transportation, the dry air bottle occupies the original space of the control box during product transportation, and the dry air bottle support is disassembled in other time without occupying the space of the wall of the air box. The device can be used for both a gas tank wall plane part and a gas tank wall curved surface part. The device has the characteristics of multiple functions, small occupied space, convenience in arrangement and high universality.

Description

Technical Field

[0001] This invention relates to a universal support and method for gas-insulated transformers, belonging to the technical field of gas-insulated transformers. Background Technology

[0002] Gas-insulated transformers are disaster-resistant power equipment that uses SF6 gas as the insulating and cooling medium. Their enclosures are pressure vessel structures. A control box and a dry air cylinder need to be installed on the gas tank of a gas-insulated transformer. The control box is an essential component for the normal operation of the transformer; however, to ensure that the transport dimensions do not exceed limits (relevant departments have clear regulations regarding the transport of large items), the control box is designed as a detachable structure for transport. It is disassembled during transport and then reassembled at the transformer installation site. The dry air cylinder is also necessary for the transformer's transport because the gas tank needs to be filled with dry air for transport. However, once the transformer is installed and operating normally, the dry air cylinder is no longer needed.

[0003] Both the control box and the dry air cylinder need to be mounted on the outer wall of the gas tank using their respective brackets (or mounting bases). Existing technology designs the two brackets separately, requiring each to have its own mounting base welded to the gas tank wall, with sufficient space allocated for each. However, when the available space on the gas tank wall is limited, arranging two brackets on the outer wall is challenging. Furthermore, because the gas tank of a gas-insulated transformer is elliptical, different bracket designs are needed for the flat and curved sections of the tank wall, resulting in poor versatility and increasing the workload for designers. Summary of the Invention

[0004] The purpose of this invention is to provide a universal bracket and method for gas-insulated transformers, which can be used as both a control box bracket and a dry air cylinder bracket. The control box and dry air cylinder brackets share a single back fixing plate, saving space in the gas tank wall, reducing welding operations, and lowering the difficulty of gas tank wall layout. It can be used on both flat and curved parts of the gas tank wall, increasing the versatility of the design, reducing the workload of designers, and solving the aforementioned problems existing in the prior art.

[0005] The technical solution of this invention is: A universal support for gas-insulated transformers includes a bottom support frame, a back fixing plate, and a dry air cylinder support. The back fixing plate is mounted on the side wall of the gas tank via a long curved plate, and a short curved plate is fixed to the side wall of the gas tank below the back fixing plate. The bottom support frame is constructed of an L-shaped base plate and angle steel. The L-shaped base plate is composed of a concave base plate and a vertical plate that are perpendicular to each other. The concave base plate is a rectangular plate with a groove on its outer side. The vertical plate has wire-passing holes and is welded to the angle steel, which is connected to the short curved plate. The L-shaped base plate is installed on the side wall of the gas tank below the back fixing plate. The concave base plate is perpendicular to the back fixing plate and the side wall of the gas tank, and the groove opening on the side of the concave base plate faces outward. The dry air cylinder support is constructed of U-bolts, a cylinder body guard plate, and a bottom support plate. The cylinder body guard plate is partially fixed to the bottom support plate. The bottle body guard plate, serving as the back plate of the dry air cylinder support, has multiple mounting holes 2. The back fixing plate has multiple mounting holes 1. The bottle body guard plate is detachably mounted on the back fixing plate by bolts 1 and 2, matching the mounting holes 1 and 2. The opening of the semi-enclosed structure of the bottle body guard plate faces outward. The dry air cylinder of the gas-insulated transformer is placed on the bottom support plate of the dry air cylinder support. The two ends of the U-bolt are respectively connected to the bottle body guard plate, positioning the dry air cylinder on the bottom support plate. After removing the dry air cylinder support plate from the back fixing plate, the back of the gas-insulated transformer control box is mounted on the back fixing plate by bolts 2. The bottom of the control box is set on the concave bottom plate of the bottom support frame. The cable of the gas-insulated transformer is arranged along the gas box wall, passing through the wire holes and grooves on the L-shaped bottom plate in sequence before connecting to the bottom of the control box.

[0006] The back fixing plate is a strip plate, and there are two of them, which are installed parallel to each other on their respective long curved plates.

[0007] The upright plate of the bottom support frame is equipped with a reinforcing plate, which is welded to the bottom of the L-shaped base plate.

[0008] The number of reinforcing plates is two, which are arranged perpendicular to the L-shaped base plate. The inner side of the reinforcing plates is welded to the upright plate, and the top of the two reinforcing plates is welded to the bottom surface of the two side walls of the concave base plate groove, respectively.

[0009] The number of U-bolts is multiple.

[0010] The dry air cylinder support has a three-sided enclosed body panel, which protects the dry air cylinder. There is a second mounting hole on the side of the body panel that faces the air box. This hole serves two purposes: it is used to connect with the first mounting hole on the back mounting plate and to fix the U-bolt. The dry air cylinder is fixed to the body panel by the U-bolt. The bottom support plate supports and protects the dry air cylinder.

[0011] A method for using a universal bracket for gas-insulated transformers: during transformer transportation, the bracket serves as a dry air cylinder bracket, allowing the dry air cylinder to occupy the original space of the control box. When the gas-insulated transformer is in operation, the dry air cylinder bracket is removed, and the back fixing plate and bottom support frame on the gas box serve as the bracket for the control box. The control box and the dry air cylinder bracket share a back fixing plate, and only the space required for the control box needs to be reserved when arranging the gas box wall.

[0012] Using this invention, only long and short curved plates of appropriate length need to be welded to the gas box wall to install the back fixing plate and bottom support frame, respectively. No additional curved plates for installing the dry air cylinder bracket need to be welded to the gas box wall. This invention fully considers the operability of installation on curved gas box walls.

[0013] The beneficial effects of this invention are: the bracket can serve as a control box bracket during operation and also as a transport bracket for air dryer cylinders during transformer transportation. Since the control box needs to be disassembled for transport, while the air dryer cylinder only needs to be installed during transport, this invention fully utilizes this characteristic. During product transportation, the air dryer cylinder occupies the space originally occupied by the control box; at other times, the air dryer cylinder bracket can be removed, not occupying space in the gas box wall. When arranging the gas box wall, only the space required for the control box needs to be reserved, making the arrangement more convenient and concise. The control box and the air dryer cylinder bracket share a single back fixing plate, reducing welding operations. Furthermore, this universal bracket can be used on both flat and curved sections of the gas box wall. Therefore, this bracket has the characteristics of multiple functions, small space occupation, convenient arrangement, and strong versatility. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of the control box installation kit according to an embodiment of the present invention; Figure 2 This is a top view of the mounting plate on the back of the control box according to an embodiment of the present invention; Figure 3 This is a top view of the installation of the bottom support frame of the control box according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the installation of the dry air bottle according to an embodiment of the present invention; Figure 5 This is a top view schematic diagram of the dry air bottle support according to an embodiment of the present invention; Figure 6 This is a front view schematic diagram of the bottom support frame according to an embodiment of the present invention; Figure 7 This is a side view of the bottom support frame according to an embodiment of the present invention; Figure 8 This is a top view of the bottom support frame according to an embodiment of the present invention; In the diagram: 1. Back fixing plate; 2. Concave base plate; 3. Reinforcing plate; 4. Angle steel; 5. Control box; 6. Long curved plate; 7. Short curved plate; 8. Bottle body guard plate; 9. Bottom support plate; 10. Dry air bottle; 11. Air box; 12. Groove; 13. Mounting hole one; 14. U-bolt; 15. Upright plate; 16. Cable hole; 17. Mounting hole two. Detailed Implementation

[0015] The invention will be further described below with reference to the accompanying drawings and examples.

[0016] See attached document Figure 1-8 A general-purpose bracket for gas-insulated transformers includes a bottom support frame, a back fixing plate 1, and a dry air cylinder bracket. The back fixing plate 1 is arranged on the side wall of the gas box 11 via a long curved plate 6, and a short curved plate 7 is fixed on the side wall of the gas box 11 below the back fixing plate 1. The bottom support frame is composed of an L-shaped base plate and angle steel 4. The L-shaped base plate is composed of a concave base plate 2 and a vertical plate 15 that are perpendicular to each other. The concave base plate 2 is a rectangular plate with a groove 12 on its outer side. The vertical plate 15 has a wire hole 16. The vertical plate 15 is welded to the angle steel 4, and the angle steel 4 is connected to the short curved plate 7. The L-shaped base plate is installed on the side wall of the gas box 11 below the back fixing plate 1. The concave base plate 2 is arranged perpendicular to the back fixing plate 1 and the side wall of the gas box 11, and the groove 12 on the side of the concave base plate faces outward. The dry air cylinder bracket is composed of U-bolts 14, a cylinder body guard plate 8, and a bottom support plate 9. The cylinder body guard plate 8 is partially surrounded and fixed to the bottom support plate 9. On plate 9, the bottle body guard plate 8 serves as the back plate of the dry air bottle support and has multiple mounting holes 17. The back fixing plate 1 has multiple mounting holes 13. The bottle body guard plate 8 is detachably installed on the back fixing plate 1 by bolts 1 matching the mounting holes 13 and mounting holes 17. The opening of the semi-enclosed structure of the bottle body guard plate 8 faces outward. The dry air bottle 10 of the gas-insulated transformer is placed on the bottom support plate 9 of the dry air bottle support. The two ends of the U-bolt 14 are respectively connected to the bottle body guard plate 8 to position the dry air bottle 10 on the bottom support plate 9. After removing the dry air bottle support on the back fixing plate 1, the back of the control box 5 of the gas-insulated transformer is installed on the back fixing plate 1 by bolts 2. The bottom of the control box 5 is set on the concave bottom plate 2 of the bottom support frame. The cable of the gas-insulated transformer is arranged along the wall of the gas box 11, and passes through the wire hole 16 and the groove 12 on the L-shaped bottom plate in sequence before connecting to the bottom of the control box 5.

[0017] The back fixing plate 1 is a strip plate, and there are two of them, which are installed parallel to each other on their respective long curved plates 6.

[0018] The upright plate 15 of the bottom support frame is provided with a reinforcing plate 3, which is welded to the bottom of the L-shaped base plate.

[0019] The number of reinforcing plates 3 is two, which are arranged perpendicular to the L-shaped base plate. The inner side of the reinforcing plates is welded to the upright plate, and the top of the two reinforcing plates 3 are respectively welded to the bottom surface of the two side walls of the groove of the concave base plate 2.

[0020] The number of U-bolts 14 is multiple.

[0021] In this embodiment, the back fixing plate 1 is bolted to the long curved plate 6 on the side wall of the air box. The long curved plate 6 is welded to the outer wall of the air box 11 and serves to provide a fixing base for the back fixing plate 1. The long curved plate 6 is called the long curved plate because it is longer than the short curved plate 7. The back fixing plate 1 is a plate-shaped fixing plate with multiple mounting holes for mounting the control box 5 and the dry air bottle bracket. It can mount both the control box 5 and the dry air bottle bracket.

[0022] The bottom support frame consists of an L-shaped base plate, a reinforcing plate 3, and angle steel 4. The horizontal surface of the L-shaped base plate is a concave base plate 2 with a groove 12 through which the control box's cables pass. The concave base plate 2 also has mounting holes 3 for fixing the bottom of the control box 5. The vertical surface of the L-shaped base plate is a vertical plate 15 with a cable passage hole 16 in the middle. The bottom support frame has two angle steels, each with mounting holes 4 for fixing the L-shaped base plate to a short curved plate 7 on the outside of the gas box side wall. The short curved plate 7 is welded to the outer wall of the gas box to provide a fixed foundation for the bottom support frame. The cables of the gas-insulated transformer are arranged along the wall of the gas box 11, passing through the cable passage hole 16 and the groove 12 on the L-shaped base plate before connecting to the bottom of the control box. Considering that workers need a certain amount of operating space to connect the cables to the bottom of the control box 5, two independent angle steels are used to install the L-shaped base plate, so that there are no obstacles between the control box 5 and the wall of the air box 11, ensuring sufficient operating distance in both flat and curved air box wall conditions.

[0023] The dry air bottle holder has a three-sided enclosed body plate 8, which protects the dry air bottle 10. The side of the body plate 8 that faces the air box has a second mounting hole 17, which serves two purposes: connecting to the mounting hole 13 on the back fixing plate 1 and fixing the U-bolt 14. The dry air bottle 10 is fixed to the body plate 8 by the U-bolt 14. The bottom support plate 9 supports and protects the dry air bottle.

[0024] A method for using a universal bracket for gas-insulated transformers: during transformer transportation, the bracket is used as a dry air cylinder bracket, allowing the dry air cylinder to occupy the original space of the control box. When the gas-insulated transformer is in operation, the dry air cylinder bracket is removed, and the back fixing plate 1 and bottom support frame on the gas box 11 serve as the bracket for the control box 5. The control box and the dry air cylinder bracket share a back fixing plate, and only the space required by the control box needs to be reserved when arranging the gas box wall.

[0025] Using this invention, only a long curved plate 6 and a short curved plate 7 of appropriate length need to be welded to the wall of the gas box 11 to install the back fixing plate 1 and the bottom support frame, respectively. No additional curved plate for installing the dry air cylinder bracket needs to be welded to the gas box wall. This invention fully considers the operability of installation on the curved gas box wall.

Claims

1. A universal support for gas-insulated transformers, characterized in that: The system includes a bottom support frame, a back fixing plate (1), and a dry air cylinder bracket. The back fixing plate (1) is arranged on the side wall of the air box (11) via a long curved plate (6), and a short curved plate (7) is fixed on the side wall of the air box (11) below the back fixing plate (1). The bottom support frame is composed of an L-shaped base plate and angle steel (4). The L-shaped base plate is composed of a concave base plate (2) and a vertical plate (15) that are perpendicular to each other. The concave base plate (2) is a rectangular plate with a groove (12) on its outer side. The vertical plate (15) is provided with a wire hole. (16) The upright plate (15) is welded to the angle steel (4), and the angle steel (4) is connected to the short curved plate (7). The L-shaped base plate is installed on the side wall of the air box (11) below the back fixing plate (1). The concave base plate (2) is arranged perpendicularly to the back fixing plate (1) and the side wall of the air box (11). The groove (12) on the side of the concave base plate opens outward. The dry air bottle support is composed of U-bolts (14), bottle body guard plate (8) and bottom support plate (9). The bottle body guard plate (8) is partially fixed to the bottom support plate (9). The bottle body guard plate (8) serves as the back plate of the dry air bottle support and is provided with multiple mounting holes 2 (17). The back fixing plate (1) is provided with multiple mounting holes 1 (13). The bottle body guard plate (8) is detachably installed on the back fixing plate (1) by matching the mounting holes 1 (13) and mounting holes 2 (17) with bolts 1. The opening of the semi-enclosed structure of the bottle body guard plate (8) faces outward. The dry air bottle (10) of the gas insulation transformer is placed on the bottom support plate (9) of the dry air bottle support. The two U-bolts (14) The ends are connected to the bottle body guard plate (8) respectively, and the dry air bottle (10) is positioned on the bottom support plate (9); the dry air bottle bracket on the back fixing plate (1) is removed, and the back of the gas insulation transformer control box (5) is installed on the back fixing plate (1) by bolt two. The bottom of the control box (5) is set on the concave bottom plate (2) of the bottom support frame. The cable of the gas insulation transformer is arranged along the box wall of the gas box (11), and passes through the wire hole (16) and groove (12) on the L-shaped bottom plate in sequence before connecting to the bottom of the control box (5).

2. A universal support for gas-insulated transformers according to claim 1, characterized in that: The back fixing plate (1) is a strip plate, and there are two of them, which are installed parallel to each other on their respective long curved plates (6).

3. A universal support for gas-insulated transformers according to claim 1 or 2, characterized in that: The bottom support frame has a reinforcing plate (3) on its upright plate (15), which is welded to the bottom of the L-shaped base plate.

4. A universal support for gas-insulated transformers according to claim 3, characterized in that: The number of reinforcing plates (3) is two, arranged perpendicularly to the L-shaped base plate. The inner side of the reinforcing plates is welded to the upright plate, and the tops of the two reinforcing plates (3) are respectively welded to the bottom surface of the two side walls of the groove of the concave base plate (2).

5. A universal support for gas-insulated transformers according to claim 1, characterized in that: The number of U-bolts (14) is multiple.

6. A universal support for gas-insulated transformers according to claim 1 or 2, characterized in that: The bottle body guard plate (8) of the dry air bottle bracket is a three-sided enclosed type, which serves to protect the dry air bottle (10). There is a second mounting hole (17) on the side of the bottle body guard plate (8) that is against the air box. It serves two purposes: it is used to connect with the first mounting hole (13) on the back fixing plate (1) and to fix the U-bolt (14). The dry air bottle (10) is fixed on the bottle body guard plate (8) by the U-bolt (14). The bottom support plate (9) serves to support and protect the dry air bottle.

7. A method of using a universal support for gas-insulated transformers as described in any one of claims 1-6, characterized in that: When the transformer is being transported, it is used as a dry air bottle support, allowing the dry air bottle to occupy the space of the original control box. When the gas-insulated transformer is in operation, the dry air bottle support is removed, and the back fixing plate (1) and bottom support frame on the gas box (11) serve as the support for the control box (5). The control box and the dry air bottle support share a back fixing plate, and only the space required by the control box needs to be reserved when arranging the gas box wall.

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