Transformer substation lightning protection grounding device convenient to disassemble

Abstract

The utility model discloses a transformer station lightning protection grounding device convenient to disassemble, which is characterized in that the upper surface and the lower surface of a mounting column are fixedly connected with fixing bolts, the annular surface of each fixing bolt is movably connected with an insulating spacer, and the annular surface of each fixing bolt is in threaded connection with an insulating knocking block; the threaded surface of the fixing bolt is fixedly connected with a ground-entering nail, the inner side surface of the ground-entering nail is fixedly connected with an insulating layer, the inner side surface of the mounting column is fixedly connected with a heat insulating layer, and the inner side surfaces of the left end and the right end of the mounting column are provided with T-shaped grooves. Through the above structure, the fixing bolt and the insulating spacer enable the grounding device to be convenient to disassemble and replace parts during later maintenance, the strength of the connection part of the grounding device can be enhanced, and the installation column and the ground nail can protect conductive parts after the grounding device is buried through the structural arrangement of the heat insulation layer and the insulating layer. And the service life of parts is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to power supply field especially, and relates to a substation lightning protection grounding device convenient to disassemble. BACKGROUND

[0002] The conventional lightning protection grounding of the substation grounding grid is an important and indispensable part to ensure the safe operation of various large operating equipment in the station. If the grounding resistance value is large, it will cause the grounding grid potential to abnormally rise, which not only threatens the operation of the equipment and personnel, but also damages the insulation of the secondary equipment, and even causes high voltage to enter the control room, causing the equipment and control equipment to malfunction or refuse to operate and expand the accident.

[0003] During the application, the applicant found that a "pre-cabin type substation lightning protection grounding device" was disclosed in a Chinese patent with the application number "CN202022715997.2". The patent mainly uses an integrated grounding device with an integrated connection device. The connection device can only be installed by connecting the line to discharge electricity, and the installation method is to directly nail into the ground, which has a high safety risk, making the maintenance steps in the later stage more complicated and increasing the replacement cost.

[0004] Therefore, we propose a substation lightning protection grounding device convenient to disassemble. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a substation lightning protection grounding device convenient to disassemble, the inner side surface of the installation column is installed with the heat insulating layer, the heat insulating layer is used to prevent the crack or melting of the grounding device due to high temperature, the inside of the ground nail is provided with an insulating layer, the insulating layer is installed on the lower surface of the conductive pipe, the insulating layer is used to introduce the electricity into the ground through the grounding device and the service life of the ground nail, the insulating gasket is installed on the annular surface of the fixed bolt at the upper and lower ends of the installation column, the graphite conductive strip is installed with the ground nail after aligning the conductive pipe at the lower end of the installation column, the insulating knocking block is installed at the upper end of the installation column, and the grounding device can be fixed in the preset position by knocking the insulating knocking block with a hammer or other instruments, the segmented installation design can facilitate the disassembly and replacement of parts during the later maintenance, and the configuration of the heat insulating layer and the insulating gasket can improve the service life of the grounding device.

[0006] In order to achieve the above object, the utility model provides a substation lightning protection grounding device convenient to disassemble, including the mounting column, its characterized in that the upper and lower surfaces of mounting column are fixedly connected with fixed bolt, the annular surface of fixed bolt is movably connected with insulating washer, the annular surface of fixed bolt is threadedly connected with insulating knock block, and the annular surface of fixed bolt is threadedly connected with ground nail. The fixed bolt and the insulating washer are arranged to enhance the safety and strength of the connecting structure of the grounding device, and the segmented connection mode facilitates the disassembly and replacement of parts during later maintenance and reduces the maintenance and replacement cost. The insulating knock block is arranged to facilitate the burial of the grounding device, reduce the hidden danger during equipment use and improve the safety of equipment use.

[0007] According to the substation lightning protection grounding device convenient to disassemble, the inner side surface of the mounting column is fixedly connected with a heat insulation layer, the inner side surfaces of the left and right ends of the mounting column are provided with T-shaped grooves, the inner side surface of the mounting column is fixedly connected with a graphite conductive strip, and the left and right side surfaces of the graphite conductive strip are fixedly connected with strip-shaped copper plates. The T-shaped grooves are arranged to fixedly connect galvanized flat steel, so that the galvanized flat steel can be connected with the grounding device and connected with other grounding devices in series. The graphite conductive strip and the strip-shaped copper plates are arranged to guide the flow of electric current and disperse the energy of the electric current.

[0008] According to the substation lightning protection grounding device convenient to disassemble, the annular surface of the lower end of the graphite conductive strip is fixedly connected with a conductive pipe, the conductive pipe is installed on the inner side surface of the ground nail, the inner side surface of the ground nail is fixedly connected with an insulating layer, the upper surface of the insulating layer is fixedly connected to the lower surface of the conductive pipe, the annular surfaces of the left and right sides of the conductive pipe are fixedly connected with a plurality of insertion rods, the lower surfaces of the insertion rods are fixedly connected to the upper surface of the insulating layer, the inner side surface of the ground nail is provided with a cavity, and the insertion rods are fixedly connected to the inner side surface of the ground nail through the cavity. The conductive pipe and the insertion rods are arranged to introduce residual electricity into the ground, disperse electric power and improve the working safety of the substation. The insulating layer is arranged to control the flow of electric current, improve the safety of the device and the service life of the device.

[0009] The utility model discloses a beneficial effect: the inner side surface of its installation column is equipped with the heat insulating layer, and the heat insulating layer's effect is to prevent the crack or melting condition of grounding device temperature being too high, and the inside of ground nail is provided with insulating layer, and the insulating layer is installed on the lower surface of the conductive pipe, and the effect of insulating layer is to make grounding device can pass the electric introduction of inserting rod and protect the service life of ground nail, and installs the insulating gasket on the annular surface of fixed bolt of installation column upper and lower both ends, and the lower end of installation column needs to install ground nail after the alignment of graphite conductive strip and conductive pipe, and after the installation of insulating knock block of the upper end of installation column, can use hammer and the like instrument to knock insulating knock block to the grounding device downwards, and fix the grounding device in the position of predetermining, and the sectional type installation design can conveniently dismantle the replacement parts of later period maintenance and the configuration of heat insulating layer and insulating gasket can improve the service life of grounding device.

[0010] The additional aspects and advantages of the utility model will be partly given in the following description, and some will become obvious from the following description or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model is further illustrated below in connection with the drawings and examples;

[0012] Fig. 1 It is the whole structure schematic diagram of the utility model of a kind of convenient disassembly's lightning protection grounding device of transformer substation;

[0013] Fig. 2 It is the conductive structure schematic diagram of the utility model of a kind of convenient disassembly's lightning protection grounding device of transformer substation;

[0014] Fig. 3 It is the conductive structure planing surface schematic diagram of the utility model of a kind of convenient disassembly's lightning protection grounding device of transformer substation;

[0015] Fig. 4 It is the installation fixed structure planing surface schematic diagram of the utility model of a kind of convenient disassembly's lightning protection grounding device of transformer substation.

[0016] LEGEND:

[0017] 1, installation column;2, insulating gasket;3, insulating knock block;4, T type recess;5, ground nail;6, fixed bolt;7, graphite conductive strip;8, strip copper plate;9, heat insulating layer;10, conductive pipe;11, inserting rod;12, insulating layer. DETAILED DESCRIPTION

[0018] The detailed embodiments of the utility model will be described in detail in this part, the preferred embodiment of the utility model is shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0019] Referring to Figs. 1 to 4 The utility model discloses a substation lightning protection grounding device convenient to dismount, it includes the mounting column 1, the upper and lower surface fixed connection of mounting column 1 has fixed bolt 6, the annular surface movable connection of fixed bolt 6 has insulating spacer 2, the annular surface screw thread connection of fixed bolt 6 has insulating knock block 3, the annular surface screw thread connection of fixed bolt 6 has ground nail 5, and the fixed bolt 6 inner surface of mounting column 1 and ground nail 5 connecting portion is provided with the cavity for the connection of graphite conductive strip 7 and conductive pipe 10, and mounting column 1 is bisected, uses insulating spacer 2, insulating knock block 3 and ground nail 5 splicing fixed.

[0020] The inner side surface of mounting column 1 is fixedly connected with a heat insulation layer 9, and the inner side surfaces of the left and right ends of the mounting column 1 are provided with T-shaped grooves 4; the inner side surface of the mounting column 1 is fixedly connected with a graphite conductive strip 7; the left and right side surfaces of the graphite conductive strip 7 are fixedly connected with strip-shaped copper plates 8; and the T-shaped grooves 4 are additionally provided with insulating plates on the two sides to fix galvanized flat steel so that the galvanized flat steel cannot fall off.

[0021] The annular surface of the lower end of the graphite conductive strip 7 is fixedly connected with a conductive pipe 10, the conductive pipe 10 is installed on the inner side surface of the ground nail 5, the inner side surface of the ground nail 5 is fixedly connected with an insulating layer 12, the upper surface of the insulating layer 12 is fixedly connected to the lower surface of the conductive pipe 10, the annular surfaces of the left and right sides of the conductive pipe 10 are fixedly connected with a plurality of insertion rods 11, the lower surfaces of the insertion rods 11 are fixedly connected to the upper surface of the insulating layer 12, the inner side surface of the ground nail 5 is provided with a cavity, the insertion rods 11 are fixedly connected to the inner side surface of the ground nail 5 through the cavity, and the sharp ends of the insertion rods 11 are in contact with the soil through the ground nail 5. Such a design is to better disperse the current in the soil.

[0022] Working principle: the left and right sides of the installation column 1 are provided with T-shaped grooves 4, a plurality of strip-shaped copper plates 8 are fixedly installed on the inner side surface of the installation column 1, the left side surface of the strip-shaped copper plate 8 is fixedly connected with a graphite conductive strip 7, the inner side surface of the installation column 1 is fixedly connected with a heat insulation layer 9, the lower end of the graphite conductive strip 7 is fixedly connected to the inner side surface of the conductive pipe 10 through a fixing bolt 6, the left and right ends of the conductive pipe 10 are fixedly connected with insertion rods 11, the conductive pipe 10 and the insertion rods 11 are installed on the inner side of the ground nail 5, an insulating layer 12 is installed on the lower surface of the conductive pipe 10, after the galvanized flat steel is inserted into the inner side surface of the T-shaped groove 4, the galvanized flat steel will be in contact with the strip-shaped copper plate 8, the two sides of the T-shaped groove 4 can be additionally provided with insulating strips to reinforce the connection part of the galvanized flat steel, the installation column 1 is a combined part, after the other half of the installation column 1 is spliced with the installation column 1 on which the graphite conductive strip 7 and the strip-shaped copper plate 8 are installed, the insulating gasket 2 is installed on the annular surface of the fixing bolt 6 at the upper and lower ends of the installation column 1, the lower end of the installation column 1 needs to be installed with the ground nail 5 after the graphite conductive strip 7 is aligned with the conductive pipe 10, the upper end of the installation column 1 is installed with the insulating knocking block 3, after the installation is completed, the grounding device can be used to knock the insulating knocking block 3 with a hammer or the like to fix the grounding device in the preset position, after the current passes through the galvanized flat steel and enters the grounding device, the strip-shaped copper plate 8 will guide the current to the graphite conductive strip 7, the graphite conductive strip 7 will shunt the current, part of the current will flow downward through the graphite conductive strip 7 and enter the conductive pipe 10 and finally flow into the ground through the insertion rod 11, the other part of the current will flow to the other strip-shaped copper plate 8 through the graphite conductive strip 7 and finally flow to other grounding devices through the strip-shaped copper plate 8, the segmented installation design can facilitate the disassembly and replacement of parts during the later maintenance, and the configuration of the heat insulation layer 9 and the insulating gasket 2 can improve the service life of the grounding device.

[0023] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the above-mentioned embodiments, within the knowledge range of ordinary skill in the art, various changes can be made without departing from the purpose of the utility model.

Claims

1. A lightning protection grounding device for a transformer substation that is easy to disassemble, comprising a mounting column (1), characterized in that, The upper and lower surfaces of the mounting column (1) are fixedly connected with fixing bolts (6), the annular surfaces of the fixing bolts (6) are movably connected with insulating washers (2), the annular surfaces of the fixing bolts (6) are threadedly connected with insulating knock blocks (3), and the annular surfaces of the fixing bolts (6) are threadedly connected with ground nails (5).

2. The lightning protection grounding device of a substation convenient to disassemble according to claim 1, characterized in that, The inner side surface of the mounting column (1) is fixedly connected with a heat insulation layer (9), and the inner side surfaces of the left and right ends of the mounting column (1) are provided with T-shaped grooves (4).

3. The lightning protection grounding device of a substation convenient to disassemble according to claim 1, characterized in that, The inner side surface of the mounting column (1) is fixedly connected with a graphite conductive strip (7), and the left and right side surfaces of the graphite conductive strip (7) are fixedly connected with strip-shaped copper plates (8).

4. The lightning protection grounding device of a substation convenient to disassemble according to claim 3, characterized in that, The annular surface of the lower end of the graphite conductive strip (7) is fixedly connected with a conductive pipe (10), and the conductive pipe (10) is installed on the inner side surface of the ground nail (5).

5. The lightning protection grounding device for a substation according to claim 1, wherein The inner side surface of the ground nail (5) is fixedly connected with an insulating layer (12), and the upper surface of the insulating layer (12) is fixedly connected to the lower surface of the conductive pipe (10).

6. The easily detachable lightning protection grounding device for a transformer substation according to claim 5, characterized in that, The annular surfaces of the left and right sides of the conductive pipe (10) are fixedly connected with a plurality of insertion rods (11), and the lower surfaces of the insertion rods (11) are fixedly connected to the upper surface of the insulating layer (12).

7. The easily detachable lightning protection grounding device for a transformer substation according to claim 6, characterized in that, The inner side surface of the ground nail (5) is provided with a cavity, and the insertion rods (11) are fixedly connected to the inner side surface of the ground nail (5) through the cavity.

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