CN211208697U

CN211208697U - Grounding device

Info

Publication number: CN211208697U
Application number: CN201922376148.6U
Authority: CN
Inventors: 王普军; 张起钧; 张德新; 姬丙和; 侯万斌; 屈中志; 王超; 徐继富; 沙泉
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-08-07
Anticipated expiration: 2029-12-25

Abstract

The utility model provides a grounding device belongs to electrical construction installation field. This earthing device includes earthing pole, oil tank and a plurality of ground wire connecting terminal, the one end of earthing pole is inserted and is established in the oil tank, the other end of earthing pole is located outside the oil tank, the earthing pole with the oil tank is insulating and sealed cooperation each other, ground wire connecting terminal is connected on the earthing pole, just ground wire connecting terminal is located in the oil tank, oil filler hole, oil discharge opening and ground wire import have on the tank wall of oil tank. Due to the protection of the oil tank, the ground wire connecting terminal can be prevented from being corroded by rainwater and snow water. The oil filling port and the oil discharging port are formed in the wall of the oil tank, when the oil tank is used, insulating oil can be injected into the oil tank through the oil filling port, the ground wire connecting terminals are prevented from being in contact with air through the oil immersing ground wire connecting terminals, the corrosion speed of the ground wire connecting terminals is further delayed, the phenomenon that the connecting terminals are broken and disengaged is favorably avoided, and potential safety hazards are eliminated.

Description

Grounding device

Technical Field

The disclosure relates to the field of electrical construction and installation, in particular to a grounding device.

Background

The grounding refers to the connection of the neutral point of the power system and the electrical device, the exposed conductive part of the electrical equipment and the conductive part outside the device with the ground through conductors, and can be divided into working grounding, lightning protection grounding and protection grounding.

The ground net is a general term for a ground body which is composed of a plurality of ground electrodes buried in the ground to a certain depth and a net structure formed by connecting the ground electrodes with each other by a conductor. The novel shielding device is widely applied to various industries such as electric power, buildings, computers, industrial and mining enterprises, communication and the like, and plays roles in safety protection, shielding and the like. At present, when a grounding grid is manufactured, a grounding wire of electrical equipment is usually connected with a flat steel through a bolt after being pressed and connected with a wiring terminal.

The corrosion gas in rainwater, snow water and air corrodes the wiring terminal and the flat steel for a long time, so that the connecting part of the wiring terminal and the flat steel is easily corroded, the contact resistance is increased, the phenomenon that the wiring terminal breaks off can also occur when the corrosion is serious, particularly in regions with high salinity such as coastal areas, the electrochemical corrosion is serious and serious, the phenomenon that the wiring terminal breaks off can occur more easily, and hidden dangers are hidden for human safety and equipment safe operation.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a grounding device, which can avoid the phenomenon that a wiring terminal is broken and disconnected and eliminate potential safety hazards. The technical scheme is as follows:

the embodiment of the utility model provides an earthing device, including earthing pole, a plurality of ground wire connecting terminal that is used for holding the oil tank of insulating fluid and is used for connecting the earth connection of electrical equipment, the one end of earthing pole is inserted and is established in the oil tank, the other end of earthing pole is located outside the oil tank, the earthing pole with the oil tank is insulating and sealed cooperation each other, ground wire connecting terminal connects on the earthing pole, just ground wire connecting terminal is located in the oil tank, the earth connection import that the earth connection that has oil filler hole, oil discharge opening and supply electrical equipment on the tank wall of oil tank passes through.

Optionally, the grounding device further comprises an oil filling funnel, and one end with the smaller inner diameter of the oil filling funnel is communicated with the oil filling port.

Optionally, the tank has opposing top and bottom walls, the filler funnel is located on the top surface of the tank, and the drain port is located on the bottom wall of the tank.

Optionally, the end with the larger inner diameter of the refueling funnel is provided with a detachable sealing cover.

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

Optionally, the oil tank includes box and case lid, the case lid with the connection can be dismantled to the box, the oil filler hole, the oil discharge outlet the earth connection import with the earthing pole all is located on the box.

Optionally, a magnetic sealing strip is clamped between the box cover and the box body.

Optionally, the ground electrode includes a ground rod and a steel strip, one end of the ground rod is connected to the steel strip, the ground rod is located outside the oil tank, and at least part of the steel strip is located inside the oil tank.

Optionally, the grounding device comprises a plurality of ground connection terminals, and the plurality of ground connection terminals are arranged at intervals along the length direction of the steel strip.

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

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

through setting up earthing pole, oil tank and ground wire connecting terminal, the one end of earthing pole is inserted and is established in the oil tank, and the other end of earthing pole is located outside the oil tank, and the one end that the earthing pole is located outside the oil tank can be used for inserting underground and be connected with the earth mat. The ground wire connecting terminal is located the oil tank and is connected with the earth electrode, can be used for connecting the earth connection of electrical equipment, because the protection of oil tank, can avoid ground wire connecting terminal to receive the corruption of rainwater, snow water. The wall of the oil tank is provided with a grounding wire inlet, so that a grounding wire of the electrical equipment can be led into the oil tank through the grounding wire inlet, and the grounding wire of the electrical equipment can be conveniently connected with the grounding wire connecting terminal. The oil filling port and the oil discharging port are formed in the wall of the oil tank, when the oil tank is used, insulating oil can be injected into the oil tank through the oil filling port, the ground wire connecting terminals are prevented from being in contact with air through the oil immersing ground wire connecting terminals, the corrosion speed of the ground wire connecting terminals is further delayed, the phenomenon that the connecting terminals are broken and disengaged is favorably avoided, and potential safety hazards are eliminated.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a grounding device according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of a fuel tank according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a ground connection terminal provided in an embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a grounding device according to an embodiment of the present disclosure. As shown in fig. 1, the grounding device includes a grounding electrode 10, a tank 20 for containing insulating oil, and a plurality of ground connection terminals 30 for connecting ground wires of electrical equipment, one end of the grounding electrode 10 is inserted into the tank 20, the other end of the grounding electrode 10 is located outside the tank 20, the grounding electrode 10 and the tank 20 are insulated from each other and are in sealed fit, the ground connection terminals 30 are connected to the grounding electrode 10, the ground connection terminals 30 are located in the tank 20, and a wall of the tank 20 has an oil filling opening 20a, an oil discharge opening 20b, and a ground wire inlet 20c for passing the ground wires of the electrical equipment.

Through setting up earthing pole, oil tank and ground wire connecting terminal, the one end of earthing pole is inserted and is established in the oil tank, and the other end of earthing pole is located outside the oil tank, and the one end that the earthing pole is located outside the oil tank can be used for inserting underground and be connected with the earth mat. The ground wire connecting terminal is located the oil tank and is connected with the earth electrode, can be used for connecting the earth connection of electrical equipment, because the protection of oil tank, can avoid ground wire connecting terminal to receive the corruption of rainwater, snow water. The wall of the oil tank is provided with a grounding wire inlet 20c, so that a grounding wire of the electrical equipment can be led into the oil tank through the grounding wire inlet, and the grounding wire of the electrical equipment can be conveniently connected with a grounding wire connecting terminal. The oil filling port and the oil discharging port are formed in the wall of the oil tank, when the oil tank is used, insulating oil can be injected into the oil tank through the oil filling port, the ground wire connecting terminals are prevented from being in contact with air through the oil immersing ground wire connecting terminals, the corrosion speed of the ground wire connecting terminals is further delayed, the phenomenon that the connecting terminals are broken and disengaged is favorably avoided, and potential safety hazards are eliminated.

The grounding electrode 10 and the fuel tank 20 are insulated from each other, which means that the fuel tank 20 is made of an insulating material, or the fuel tank 20 is made of a metal material, and the grounding member 10 and the fuel tank 20 are isolated from each other by an insulating material, which may be ceramic, for example.

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

Tank 20 may have opposing top and

bottom walls

2011, 2012 and side walls connecting top and

bottom walls

2011, 2012, and drain 20b may be located on bottom wall 2012 of tank 20 to facilitate draining of oil from tank 20 for maintenance or cleaning of structures within tank 20. The filler neck 20a may be located on a top wall 2011 of the fuel tank 20 to facilitate filling of the fuel tank 20. A ground lead inlet 20c may be provided in the side wall 2013 to facilitate introduction of a ground lead into the fuel tank 20. The oil tank 20 may have a plurality of ground wire inlets 20c, each ground wire inlet 20c may be located on the same sidewall 2013 of the oil tank 20, so as to facilitate centralized management of a plurality of ground wires under the condition that there are a plurality of ground wires, and each ground wire inlet 20c may also be located on a different sidewall 2013, so as to facilitate introduction of ground wires in different directions into the oil tank 20. After the oil is filled into the oil tank 20, the ground wire inlet 20c can be positioned on the liquid level of the oil, so that leakage at the ground wire inlet 20c is avoided.

Optionally, a sealant boot 204 may be disposed in the ground wire inlet 20 c. When the ground wire of the electrical equipment is introduced into the oil tank 20, the ground wire is matched with the sealing rubber sleeve 204, so that the sealing performance is improved, and possible oil leakage or external impurities entering the oil tank 20 are avoided.

Each ground wire inlet 20c may be configured to receive one ground wire, and may be configured to receive two or more ground wires. Each ground wire inlet 20c only accommodates one ground wire, so that the ground wire inlet 20c and the ground wire can be matched conveniently, and the sealing performance is improved.

Fig. 2 is an exploded schematic view of an oil tank according to an embodiment of the present disclosure. As shown in fig. 2, the fuel tank 20 may include a tank body 201 and a tank cover 202. The tank cover 202 is detachably connected with the tank body 201, and the oil filling port 20a, the oil discharge port 20b, the ground wire inlet 20c and the ground electrode 10 are all located on the tank body 201. By arranging the detachable box cover 202, when in use, the box cover 202 can be detached firstly, and then the ground wire of the electrical equipment and the ground wire connecting terminal 30 are connected in the box body 201, so that the operation is convenient. And also facilitates cleaning of the interior of fuel tank 20. The oil filling port 20a, the oil discharge port 20b, the grounding wire inlet 20c and the grounding electrode 10 are arranged on the box body 201 instead of the box cover 202, so that the box cover 202 can be conveniently disassembled and assembled. The cover 202 and the case 201 can be connected by bolts.

The exemplary fuel tank 20 shown in fig. 2 has a rectangular parallelepiped shape, and in other possible implementations, the fuel tank 20 may have other shapes, such as a cylindrical shape.

As shown in fig. 2, a magnetic sealing strip 203 may be interposed between the case cover 202 and the case 201. Through setting up magnetic sealing strip 203, not only can strengthen the leakproofness between case lid 202 and the box 201, avoid the leakage of fluid in the oil tank 20, but also during dismouting case lid 202, can utilize magnetic sealing strip 203's magnetism, adsorb case lid 202 to box 201 earlier on, fix again, make things convenient for the dismouting of case lid 202.

Bottom wall 2012 of oil tank 20 can have the opening 20d that holds earthing pole 10, and after earthing pole 10 inserted the opening, can weld the opening dead, avoid oil tank 20 to leak to anticorrosive treatment can be done to the welding seam, avoids the welding department to appear corroding and causes the leakage.

Referring to fig. 1, the ground engaging means may further include a filler funnel 40, and one end of the filler funnel 40 having a smaller inner diameter is communicated with the filler opening 20 a. By providing a filler funnel 40, filling of fuel into the fuel tank 20 is facilitated.

A filler funnel 40 may be located on a top surface of fuel tank 20 such that filler funnel 40 may be used to facilitate filling.

As shown in fig. 1, the end of the filler funnel 40 having a larger inner diameter may be provided with a detachable sealing cap 401. The filler funnel 40 is sealed by the sealing cap 401 to prevent impurities such as rainwater from falling into the oil tank 20.

The sealing cover 401 may have a handle 402 thereon to facilitate opening of the sealing cover 401.

As shown in fig. 1, an oil drain valve 50 may be connected to the oil tank 20 at a position corresponding to the oil drain port 20 b. When the grounding device works, the oil drain valve 50 is in a closed state, and when oil needs to be drained, the oil drain valve 50 can be opened. The oil drain valve 50 is of an optional structure, and when the oil drain valve 50 is not arranged, oil can be prevented from leaking in a mode of blocking the oil drain port 20b, and the oil drain port 20b is opened when oil is drained. The oil discharge port 20b may be closed with a plug screw, for example.

As shown in fig. 1, the ground electrode 10 may include a ground rod 101 and a steel band 102, one end of the ground rod 101 is connected to the steel band 102, the ground rod 101 is located outside the fuel tank 20, and at least a portion of the steel band 102 is located inside the fuel tank 20. The ground rod 101 is used for insertion into the ground, and the steel band 102 has a large side surface to facilitate the arrangement of the ground connection terminal 30, and the steel band 102 may facilitate lateral bending.

The steel strip 102 may be a galvanized steel strip, and the corrosion resistance of the steel strip 102 may be improved by galvanizing, so that the service life is prolonged, and the influence of the increase of resistance caused by corrosion on the normal grounding is avoided.

The steel strip 102 may be a steel plate with a rectangular cross section, and illustratively, the width of the steel strip 102 is 50mm, the thickness of the steel strip 102 is 6mm, the length of the steel strip 102 is 300-500 mm, and the width, the thickness and the length of the steel strip 102 may be set according to specific needs.

As shown in fig. 1, the grounding device may include a plurality of ground connection terminals 30, and the plurality of ground connection terminals 30 may be arranged at intervals along the length direction of the steel strip 102 to facilitate connection of the ground wire to the ground connection terminals 30.

Fig. 3 is a schematic structural diagram of a ground connection terminal provided in an embodiment of the present disclosure. As shown in fig. 3, the ground connection terminal 30 may include a connection tube 301 and a collar 302 for connection with the steel band 102. The connecting pipe 301 can be used for connecting a ground wire of an electrical device, the lantern ring 302 can be pressed on the steel belt 102 through bolts, so that the installation angle of the ground wire connecting terminal 30 can be adjusted by screwing the bolts, the bolts are fastened again, the lantern ring 302 is pressed, and the ground wire connecting terminal 30 are conveniently connected.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims

1. The utility model provides an earthing device, its characterized in that, includes earthing pole (10), is used for holding oil tank (20) of insulating fluid and a plurality of ground wire connecting terminal (30) that are used for connecting the earth connection of electrical equipment, the one end of earthing pole (10) is inserted and is established in oil tank (20), the other end of earthing pole (10) is located outside oil tank (20), earthing pole (10) with oil tank (20) are insulating and sealed cooperation each other, ground wire connecting terminal (30) are connected on earthing pole (10), just ground wire connecting terminal (30) are located in oil tank (20), have on the tank wall of oil tank (20) oil filler hole (20a), oil outlet (20b) and the earth connection import (20c) that the earth connection of power supply gas equipment passes through.

2. The grounding device according to claim 1, further comprising a filler funnel (40), wherein an end of the filler funnel (40) having a smaller inner diameter communicates with the filler opening (20 a).

3. The grounding device of claim 2, wherein the tank (20) has opposite top and bottom walls (2011, 2012), the filler funnel (40) is located on the top surface of the tank (20), and the drain port (20b) is located on the bottom wall (2012) of the tank (20).

4. The grounding device according to claim 2, characterized in that the end of the filler funnel (40) with the larger inner diameter is provided with a detachable sealing cap (401).

5. The grounding device as claimed in claim 1, wherein an oil drain valve (50) is connected to the oil tank (20) at a position corresponding to the oil drain port (20 b).

6. The grounding device according to 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), and the oil filling port (20a), the oil discharging port (20b), the grounding wire inlet (20c) and the grounding electrode (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 box cover (202) and the box body (201).

8. The grounding device of claim 1, characterized in that the grounding electrode (10) comprises a grounding rod (101) and a steel strip (102), one end of the grounding rod (101) being connected to the steel strip (102), the grounding rod (101) being located outside the fuel tank (20), at least part of the steel strip (102) being located inside the fuel tank (20).

9. The grounding device according to claim 8, characterized in that the grounding device comprises a plurality of the ground connection terminals (30), and the plurality of the ground connection terminals (30) are arranged at intervals along the length direction of the steel strip (102).

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