Grounding device

Abstract

The ground device belongs to the field of electrical construction installation, and comprises a grounding pole, an oil tank and a plurality of ground wire connecting terminals. One end of the grounding pole is inserted into the oil tank, and the other end of the grounding pole is located outside the oil tank. The grounding pole and the oil tank are insulated and sealingly matched with each other. The ground wire connecting terminals are connected to the grounding pole, and the ground wire connecting terminals are located in the oil tank. The tank wall of the oil tank is provided with an oil inlet, an oil outlet and a ground wire inlet. Due to the protection of the oil tank, the ground wire connecting terminals can be prevented from being corroded by rainwater and snow water. The tank wall of the oil tank is provided with an oil inlet and an oil outlet. In use, insulating oil can be injected into the oil tank through the oil inlet, and the ground wire connecting terminals are immersed in the oil, thereby avoiding contact between the ground wire connecting terminals and air, further slowing down the corrosion speed of the ground wire connecting terminals, and helping to avoid the phenomenon of disconnection of the connecting terminals and eliminate safety hazards.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of electrical construction installation, in particular to a grounding device. BACKGROUND

[0002] Grounding refers to the connection of the neutral point of a power system and electrical device, exposed conductive parts of electrical equipment and device external conductive parts to the ground via a conductor, which can be divided into working grounding, lightning protection grounding and protective grounding.

[0003] The grounding grid is a general term for a grounding body composed of a plurality of grounding electrodes buried in the ground at a certain depth and a conductor connecting the grounding electrodes to each other to form a mesh structure. It is widely used in power, construction, computer, industrial and mining enterprises, communication and many other industries, and plays a role in safety protection, shielding, etc. At present, when making the grounding grid, the grounding wire of the electrical equipment is usually connected to the flat steel by a bolt after being crimped to the terminal.

[0004] Due to the long-term corrosion of rainwater, snowwater, and corrosive gases in the air on the terminal and the flat steel, the connection between the terminal and the flat steel is prone to rust, which increases the contact resistance, and when the corrosion is severe, the terminal may be disconnected, especially in coastal areas with high salinity, where electrochemical corrosion is more severe and the terminal is more likely to be disconnected, posing a safety hazard to the safe operation of the equipment. SUMMARY

[0005] The embodiment of the present disclosure provides a grounding device which can avoid the disconnection of the terminal and eliminate the safety hazard. The technical scheme is as follows:

[0006] The embodiment of the present disclosure provides a grounding device, which comprises a grounding electrode, an oil tank for containing insulating oil, and a plurality of ground wire connection terminals for connecting the grounding wire of the electrical equipment. One end of the grounding electrode is inserted into the oil tank, the other end of the grounding electrode is located outside the oil tank, the grounding electrode and the oil tank are insulated and sealingly matched with each other, the ground wire connection terminals are connected to the grounding electrode, and the ground wire connection terminals are located in the oil tank. The tank wall of the oil tank has a filling port, a draining port and a ground wire inlet for the grounding wire of the electrical equipment.

[0007] Optionally, the grounding device further comprises an oil filling funnel, and the smaller end of the oil filling funnel is in communication with the filling port.

[0008] Optionally, the oil tank has opposite top and bottom walls, the oil filling funnel is located on the top surface of the oil tank, and the draining port is located on the bottom wall of the oil tank.

[0009] Optionally, the larger end of the oil filling funnel is provided with a detachable sealing cover.

[0010] Optionally, a drain valve is connected to a position on the oil tank corresponding to the oil drain port.

[0011] Optionally, the oil tank comprises a tank body and a tank cover, the tank cover is detachably connected to the tank body, the oil filling port, the oil drain port, the ground wire inlet and the grounding electrode are all located on the tank body.

[0012] Optionally, a magnetic sealing strip is arranged between the tank cover and the tank body.

[0013] Optionally, the grounding electrode comprises a grounding rod and a steel band, one end of the grounding rod is connected to the steel band, the grounding rod is located outside the oil tank, and at least part of the steel band is located inside the oil tank.

[0014] Optionally, the grounding device comprises a plurality of ground wire connection terminals, and the plurality of ground wire connection terminals are arranged at intervals along the length direction of the steel band.

[0015] Optionally, a sealing rubber sleeve is arranged in the ground wire inlet.

[0016] The technical scheme provided by the embodiments of the present disclosure has at least the following beneficial effects:

[0017] By arranging the grounding electrode, the oil tank and the ground wire connection terminal, one end of the grounding electrode is inserted into the oil tank, the other end of the grounding electrode is located outside the oil tank, and the end of the grounding electrode located outside the oil tank can be used to insert into the ground and connect with the grounding net. The ground wire connection terminal is located inside the oil tank and connected with the grounding electrode, and can be used to connect the ground wire of the electrical equipment. Due to the protection of the oil tank, the ground wire connection terminal can be prevented from being corroded by rainwater and snowwater. The oil tank has the ground wire inlet on the tank wall, which can make the ground wire of the electrical equipment introduced into the oil tank through the ground wire inlet, and facilitate the connection of the ground wire of the electrical equipment with the ground wire connection terminal. The oil tank has the oil filling port and the oil drain port on the tank wall, and when in use, the insulating oil can be injected into the oil tank through the oil filling port, and the ground wire connection terminal can be immersed in the oil, so as to avoid the contact of the ground wire connection terminal with air, further slow down the corrosion speed of the ground wire connection terminal, and help to avoid the disconnection of the terminal and eliminate the safety hazard. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present disclosure, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 is a structural schematic view of a grounding device provided by the embodiments of the present disclosure;

[0020] Figure 2 This is an exploded structural diagram of a fuel tank provided in an embodiment of this disclosure;

[0021] Figure 3 This is a schematic diagram of the structure of a ground wire connection terminal provided in an embodiment of this disclosure. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of a grounding device provided in an embodiment of this disclosure. Figure 1 As shown, the grounding device includes a grounding electrode 10, an oil tank 20 for holding insulating oil, and several grounding connection terminals 30 for connecting the grounding wire of electrical equipment. One end of the grounding electrode 10 is inserted into the oil tank 20, and the other end of the grounding electrode 10 is located outside the oil tank 20. The grounding electrode 10 and the oil tank 20 are insulated from each other and sealed together. The grounding connection terminals 30 are connected to the grounding electrode 10 and are located inside the oil tank 20. The tank wall of the oil tank 20 has an oil filling port 20a, an oil drain port 20b, and a grounding wire inlet 20c through which the grounding wire of the electrical equipment passes.

[0024] By setting up a grounding electrode, an oil tank, and grounding connection terminals, one end of the grounding electrode is inserted into the oil tank, while the other end is located outside the tank. The end of the grounding electrode outside the tank can be inserted underground to connect to the grounding grid. The grounding connection terminals, located inside the oil tank and connected to the grounding electrode, can be used to connect the grounding wire of electrical equipment. Due to the protection of the oil tank, the grounding connection terminals are protected from corrosion by rainwater and snowmelt. The oil tank wall has a grounding wire inlet 20c, allowing the grounding wire of electrical equipment to be introduced into the oil tank through this inlet, facilitating the connection of the grounding wire to the grounding connection terminals. The oil tank wall has an oil filler and an oil drainer. During use, insulating oil can be injected into the tank through the oil filler. The oil submerges the grounding connection terminals, preventing them from contacting air and further slowing down corrosion. This helps prevent terminal breakage and eliminates safety hazards.

[0025] The grounding electrode 10 and the oil tank 20 are insulated from each other, which means that the oil tank 20 is made of insulating material or the oil tank 20 is made of metal material, and the grounding electrode 10 and the oil tank 20 are isolated by insulating material, such as ceramic.

[0026] The sealing fit between the grounding electrode 10 and the oil tank 20 means that there is no leakage gap between the grounding electrode 10 and the oil tank 20, or that the gap between the grounding electrode 10 and the oil tank 20 is filled.

[0027] The oil tank 20 can have opposite top and bottom walls 2011, 2012 and side walls connecting the top and bottom walls 2011, 2012. The oil outlet 20b can be located on the bottom wall 2012 of the oil tank 20 to facilitate the discharge of oil in the oil tank 20 for maintenance or cleaning of the structure in the oil tank 20. The oil inlet 20a can be located on the top wall 2011 of the oil tank 20 to facilitate oiling of the oil tank 20. The ground wire inlet 20c can be provided on the side wall 2013 to facilitate the introduction of the ground wire into the oil tank 20. The oil tank 20 can have a plurality of ground wire inlets 20c, each of which can be located on the same side wall 2013 of the oil tank 20 to facilitate centralized management of multiple ground wires in the case of multiple ground wires. Each ground wire inlet 20c can also be located on different side walls 2013 to facilitate the introduction of ground wires in different directions into the oil tank 20. After the oil tank 20 is filled with oil, the ground wire inlet 20c can be located on the oil surface to avoid leakage at the ground wire inlet 20c.

[0028] Optionally, a sealing rubber sleeve 204 can be provided in the ground wire inlet 20c. When the ground wire of the electrical equipment is introduced into the oil tank 20, the ground wire cooperates with the sealing rubber sleeve 204 to improve the sealing performance and avoid possible oil leakage or entry of foreign matter into the oil tank 20.

[0029] Each ground wire inlet 20c can be used to accommodate one ground wire or two or more ground wires. Accommodating one ground wire in each ground wire inlet 20c can facilitate cooperation between the ground wire inlet 20c and the ground wire and improve the sealing performance.

[0030] Figure 2 is a schematic exploded view of an oil tank provided by an embodiment of the present disclosure. As shown in Figure 2 The oil tank 20 can include a tank body 201 and a tank cover 202. The tank cover 202 is detachably connected to the tank body 201. The oil inlet 20a, the oil outlet 20b, the ground wire inlet 20c and the grounding electrode 10 are all located on the tank body 201. By providing a detachable tank cover 202, the tank cover 202 can be detached first during use, and then the ground wire of the electrical equipment and the ground terminal 30 can be connected in the tank body 201, facilitating operation. Moreover, the interior of the oil tank 20 can be conveniently cleaned. By locating the oil inlet 20a, the oil outlet 20b, the ground wire inlet 20c and the grounding electrode 10 on the tank body 201 instead of on the tank cover 202, the tank cover 202 can be conveniently detached and attached. The tank cover 202 and the tank body 201 can be connected by bolts.

[0031] Figure 2 The oil tank 20 shown as an example is a rectangular parallelepiped. In other possible implementations, the oil tank 20 can also have other shapes, such as a cylindrical shape.

[0032] As shown in Figure 2 , a magnetic sealing strip 203 can be arranged between the tank cover 202 and the tank body 201. By arranging the magnetic sealing strip 203, not only the sealing between the tank cover 202 and the tank body 201 can be enhanced to avoid leakage of oil in the oil tank 20, but also when the tank cover 202 is disassembled, the tank cover 202 can be first adsorbed to the tank body 201 by the magnetism of the magnetic sealing strip 203, and then fixed, facilitating disassembly and assembly of the tank cover 202.

[0033] The bottom wall 2012 of the oil tank 20 can have an opening 20d for accommodating the grounding pole 10. After the grounding pole 10 is inserted into the opening, the opening can be welded to avoid leakage of the oil tank 20, and the weld can be subjected to corrosion prevention treatment to avoid corrosion at the welded portion to cause leakage.

[0034] Referring to Figure 1 , the grounding device can further include a fuel filler funnel 40, and the smaller end of the fuel filler funnel 40 is in communication with the oil filler opening 20a. By arranging the fuel filler funnel 40, it is convenient to add oil to the oil tank 20.

[0035] The fuel filler funnel 40 can be located on the top surface of the oil tank 20, so that it is convenient to use the fuel filler funnel 40 to add oil.

[0036] As shown in Figure 1 , the larger end of the fuel filler funnel 40 can be provided with a detachable sealing cover 401. By sealing the fuel filler funnel 40 with the sealing cover 401, rainwater and other impurities can be prevented from falling into the oil tank 20.

[0037] The sealing cover 401 can have a handle 402 to facilitate opening of the sealing cover 401.

[0038] As shown in Figure 1 , the oil tank 20 can be connected with a drain valve 50 at a position corresponding to the oil drain opening 20b. The drain valve 50 is in a closed state when the grounding device is working, and can be opened when oil needs to be drained. The drain valve 50 is an optional structure. If the drain valve 50 is not arranged, the oil drain opening 20b can be plugged to prevent oil from leaking out, and the oil drain opening 20b can be opened when oil is drained. For example, a plug can be used to plug the oil drain opening 20b.

[0039] As shown in Figure 1 , the grounding pole 10 can include a grounding rod 101 and a steel belt 102, one end of the grounding rod 101 is connected with the steel belt 102, the grounding rod 101 is located outside the oil tank 20, and at least part of the steel belt 102 is located inside the oil tank 20. The grounding rod 101 is used to be inserted into the ground, and the steel belt 102 has a large side surface, which can facilitate arrangement of the terminal 30, and the steel belt 102 can be conveniently bent laterally.

[0040] The steel strip 102 can be a galvanized steel strip. The galvanization can improve the corrosion resistance of the steel strip 102, prolong the service life, and avoid the increase of resistance caused by rust, which affects the normal grounding.

[0041] The steel strip 102 can be a steel plate with a rectangular cross section. For example, the width of the steel strip 102 is 50 mm, and the thickness is 6 mm. The length of the steel strip 102 is 300-500 mm. The width, thickness, and length of the steel strip 102 can be set according to specific needs.

[0042] As shown in Figure 1 The grounding device can include a plurality of ground wire connection terminals 30. The plurality of ground wire connection terminals 30 can be arranged at intervals along the length direction of the steel strip 102, facilitating the connection of the grounding wire with the ground wire connection terminal 30.

[0043] Figure 3 is a structural schematic diagram of a ground wire connection terminal provided by the embodiment of the present disclosure. As shown in Figure 3 The ground wire connection terminal 30 can include a connecting pipe 301 and a sleeve ring 302 for connecting with the steel strip 102. The connecting pipe 301 can be used to connect the grounding wire of the electrical equipment. The sleeve ring 302 can be pressed on the steel strip 102 by a bolt. In this way, by screwing the bolt, the installation angle of the ground wire connection terminal 30 can be adjusted, and then the bolt is fastened to press the sleeve ring 302, facilitating the connection of the grounding wire with the ground wire connection terminal 30.

[0044] The above description is only optional embodiments of the present disclosure and does not limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A grounding device, characterized in that The grounding device comprises a grounding pole (10), an oil tank (20) for containing insulating oil, and a plurality of ground wire connection terminals (30) for connecting ground wires of electrical equipment, the grounding pole (10) comprises a grounding rod (101) and a steel band (102), one end of the grounding rod (101) is connected with the steel band (102), the grounding rod (101) is located outside the oil tank (20), at least part of the steel band (102) is located inside the oil tank (20), and the steel band (102) and the oil tank (20) are in sealed and insulated fit with each other, the ground wire connection terminals (30) are connected on the grounding pole (10), and the ground wire connection terminals (30) are located inside the oil tank (20), the ground wire connection terminals (30) comprise a connecting pipe (301) for connecting ground wires of electrical equipment and a sleeve ring (302) for connecting with the steel band (102), the sleeve ring (302) is pressed on the steel band (102) by a bolt, the oil tank (20) has opposite top and bottom walls (2011) and (2012), the top wall (2011) of the oil tank (20) is provided with a filling port (20a), the bottom wall (2012) of the oil tank (20) is provided with a draining port (20b), and the side wall of the oil tank (20) is provided with a ground wire inlet (20c), the ground wire inlet (20c) is located above the oil liquid level after the oil tank (20) is filled with oil.

2. The grounding device of claim 1, wherein, The grounding device further comprises a filling funnel (40), one end of the filling funnel (40) with a smaller inner diameter is in communication with the filling port (20a).

3. The grounding device of claim 2, wherein, The filling funnel (40) is located on the top surface of the oil tank (20).

4. The grounding device of claim 2, wherein, The end of the filling funnel (40) with a larger inner diameter is provided with a detachable sealing cover (401).

5. The grounding device of claim 1, wherein, The oil tank (20) is connected with a draining valve (50) at a position corresponding to the draining port (20b).

6. The grounding device of claim 1, wherein, The oil tank (20) comprises a tank body (201) and a tank cover (202), the tank cover (202) is detachably connected with the tank body (201), the filling port (20a), the draining port (20b), the ground wire inlet (20c), and the grounding pole (10) are all located on the tank body (201).

7. The grounding device of claim 6, wherein, A magnetic sealing strip (203) is clamped between the tank cover (202) and the tank body (201).

8. The grounding device of claim 1, wherein, The grounding device comprises a plurality of ground wire connection terminals (30), and the plurality of ground wire connection terminals (30) are arranged at intervals along the length direction of the steel band (102).

9. The grounding device according to any one of claims 1 to 4, characterized in that A sealing rubber sleeve (204) is arranged in the ground wire inlet (20c).

Images