A grounding device for power electronic equipment

Abstract

The present invention discloses a grounding device for power electronic equipment, and relates to the technical field of grounding bodies for power electronic equipment, in order to solve the problem that artificial grounding bodies used for DC equipment in the prior art mostly adopt the shape of a column or a block, the current dispersion area of ​​the two structures has certain limitations, and all artificial grounding bodies themselves are also affected by the geographical environment. The DC grounding element body includes a cone grounding component, the outer surface of the cone grounding component is provided with a main cone frame, the main cone frame is provided with conical guide plates around, and there are four conical guide plates, the inner side of the conical guide plate is provided with a metal copper plate, the outer side of the metal copper plate is provided with a graphite plate, the outer side of the graphite plate is provided with a stainless steel copper layer, and the graphite plate is combined and connected with the metal copper plate and the stainless steel copper layer, and the outer surface of the stainless steel copper layer is provided with an external suction cotton core.

Description

Technical Field

[0001] The invention relates to the technical field of grounding bodies of power electronic equipment, in particular to a grounding device for power electronic equipment. Background Art

[0002] Grounding bodies are mainly divided into two categories: natural grounding bodies and artificial grounding bodies: all kinds of metal components, metal well pipes, foundations of reinforced concrete buildings, metal pipes and equipment that are directly in contact with the earth are called natural grounding bodies. The grounding body is a conductor that is in close contact with the earth's soil and provides an electrical connection with the earth, safely dissipating lightning energy and allowing it to be discharged into the earth. In grounding design, various metal structures, pipes and equipment that are reliably connected to the earth are used as grounding bodies, which are called natural grounding bodies. If the resistance of the natural grounding body can meet the requirements and does not pose a safety hazard to the natural grounding body, it can be used as a grounding body when there are no mandatory specifications. Conductors that are artificially buried underground as grounding devices are called artificial grounding bodies. Generally, metal objects that meet the grounding requirements are buried underground at a suitable depth, and the resistance meets the specified requirements, and they are used as grounding bodies. Refer to the grounding specifications for specific reference, and lightning protection grounding, equipment grounding, electrostatic grounding, etc. need to be distinguished. Grounding is the most important part of lightning protection engineering. Whether it is direct lightning protection or lightning electrostatic induction, electromagnetic induction and lightning wave intrusion protection technology, the ultimate goal is to send lightning current into the earth. Therefore, without good grounding technology, there can be no qualified lightning protection process. The function of protective grounding is to make a good metal connection between the non-charged metal parts of electrical equipment and the grounding body, reduce the voltage of the contact point to the ground, and avoid the risk of electric shock to the human body.

[0003] However, the artificial grounding bodies used in existing DC equipment mostly adopt a column or block shape structure. The current dissipation area of ​​the two structures is limited to a certain extent. At the same time, all artificial grounding bodies themselves are also affected by the geographical environment; therefore, they do not meet the existing needs. In this regard, we propose a power electronic equipment grounding device. Summary of the invention

[0004] The purpose of the present invention is to provide a grounding device for power electronic equipment to solve the problem that the artificial grounding bodies used in the DC equipment proposed in the above background technology mostly adopt the shape of a column or a block, and the current dissipation area of ​​the two structures has certain limitations. At the same time, all artificial grounding bodies themselves are also affected by the geographical environment.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a grounding device for power electronic equipment, comprising a DC grounding element body, the DC grounding element body comprising a conical grounding assembly, the outer surface of the conical grounding assembly is provided with a main body conical frame, the conical body conical frame is provided with conical guide plates around, and there are four conical guide plates, a metal copper plate is provided on the inner side of the conical guide plate, a graphite plate is provided on the outer side of the metal copper plate, a stainless steel copper layer is provided on the outer side of the graphite plate, and the graphite plate is combined with the metal copper plate and the stainless steel copper layer, an outer cotton core is provided on the outer surface of the stainless steel copper layer, and the stainless steel copper layer is connected to the outer cotton core through a card slot, a cone inner cavity is provided inside the cone grounding assembly, a resistance reducing agent is provided inside the cone inner cavity, a copper electric connection cone is provided inside the resistance reducing agent, and the resistance reducing agent and the copper electric connection cone are combined and connected with the cone inner cavity, a transfer protection assembly is provided above the copper electric connection cone, and the transfer protection assembly is combined and connected with the copper electric connection cone.

[0006] Preferably, a planar top cover is provided above the conical grounding assembly, and the planar top cover is combined and connected with the conical grounding assembly, a sealing interface is provided above the planar top cover, and the sealing interface is fixedly connected with the planar top cover, insulating handles are provided on both sides of the sealing interface, and the insulating handles are connected to the planar top cover by bolts.

[0007] Preferably, an insulating assembly terminal is arranged above the sealing interface, and the insulating assembly terminal is connected to the sealing interface through an internal thread, and a soft rubber sleeve is arranged above the insulating assembly terminal, and the soft rubber sleeve is fixedly connected to the insulating assembly terminal.

[0008] Preferably, a wiring cavity is provided inside the transfer protection component, a sealed cavity is provided above the wiring cavity, a wiring sensing terminal is provided at the bottom of the wiring cavity, a grounding metal copper wire is provided above the wiring sensing terminal, and the wiring sensing terminal is electrically connected to the grounding metal copper wire and the copper electrical cone.

[0009] Preferably, an inner liner protective layer is arranged above the grounding metal copper wire, and the inner liner protective layer is connected to the transition protection component through a sealed cavity, and a grounding wire group is arranged above the inner liner protective layer.

[0010] Preferably, the grounding metal copper wire and the grounding wire group are connected to the inner tank protective layer combination, and the grounding wire group is connected to the insulating group connection terminal and the soft rubber sleeve combination.

[0011] Preferably, the main conical frame is connected to the conical guide plate through a slot, and the conical guide plate is composed of a metal copper plate, a graphite plate, a stainless steel copper-clad layer and an outer absorbent cotton core.

[0012] Preferably, the main conical frame has the same structural shape as the copper grounding cone, backfill soil is provided above the DC grounding element main body, and external ground is provided above the backfill soil.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The cone grounding assembly of the present invention is mainly composed of a main cone frame, and four groups of cone guide plates are arranged around the main cone frame, so that four current dissipation surfaces can be provided to complete the current dissipation of the grounding line from four different directions, thereby improving the conductivity to the greatest extent;

[0015] 2. The conical guide plate of the present invention is composed of a metal copper plate, a graphite plate, a stainless steel copper layer and an outer absorbent cotton core. The innermost metal copper plate is cheaper than silver, but has extremely high electrical conductivity, and can conduct the current generated by the grounding wire outward. The graphite plate on the outside of the metal copper plate, as a conductive medium in the middle of the plate, is conducive to the transmission of current, and the stainless steel copper layer on the outside of the graphite plate is used as an outer protective shell. Because it has extremely strong corrosion resistance, it can be placed in underground soil for a long time for use, thereby improving the overall service life of the device and reducing maintenance costs. At the same time, the outer surface of each stainless steel copper layer is provided with an outer absorbent cotton core, because the grounding device needs to be in a humid environment, otherwise the surrounding resistance will increase, resulting in a decrease in electrical conductivity. The moisture in the soil will have a saturation. When saturated, the soil will not absorb moisture. At this time, the excess moisture can be absorbed and preserved through the cotton core to avoid excessive loss of moisture. When the moisture in the soil decreases, the soil will absorb moisture from the cotton core, thereby achieving feedback and ensuring a humid environment around it.

[0016] 3. The present invention arranges the grounding line in a soft rubber casing, connects the casing to the grounding device through a sealing port assembly, and through a series of sealing measures, ensures the sealing performance of the connection, prevents air from entering and causing aging of the line. At the same time, the casing is wrapped around the outside of the line to protect the grounding wire, so that the grounding wire does not need to be in direct contact with the soil, thereby preventing the substances in the soil from corroding the line. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall front view of the present invention;

[0018] Figure 2 It is a schematic diagram of the overall installation structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the overall local structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the conical guide plate of the present invention;

[0021] Figure 5 It is a schematic diagram of the enlarged structure of A of the present invention.

[0022] In the figure: 1. DC grounding element body; 2. Main conical frame; 3. Conical guide plate; 4. Flat top cover; 5. Insulated handle; 6. Sealed interface; 7. Insulated assembly terminal; 8. Soft rubber sleeve; 9. External ground; 10. Backfill soil; 11. Grounding wire group; 12. Resistance reducing agent; 13. Conical grounding assembly; 14. Copper connecting cone; 15. Transfer protection assembly; 16. Conical inner cavity; 17. Metal copper plate; 18. Graphite plate; 19. Stainless steel copper layer; 20. Outer cotton core; 21. Inner liner protection layer; 22. Sealed cavity; 23. Wiring cavity; 24. Grounding metal copper wire; 25. Wiring sensing terminal. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] See also Figure 1-5The present invention provides an embodiment: a grounding device for power electronic equipment, comprising a DC grounding element body 1, the DC grounding element body 1 comprising a conical grounding assembly 13, the outer surface of the conical grounding assembly 13 is provided with a main conical frame 2, the main conical frame 2 is provided with conical guide plates 3 around, and there are four conical guide plates 3, which have four current dispersion surfaces, and complete the current dispersion of the grounding line from four different directions, thereby improving the conductivity to the greatest extent; a metal copper plate 17 is provided on the inner side of the conical guide plate 3, which has a lower cost than silver but has extremely high conductivity, and can conduct the current generated by the grounding line outward; a graphite plate 18 is provided on the outer side of the metal copper plate 17, which serves as a conductive medium in the middle of the plate and is conducive to the transmission of current; a stainless steel copper layer 19 is provided on the outer side of the graphite plate 18, which has extremely strong corrosion resistance and can be placed in underground soil for a long time for use, thereby improving the overall service life of the device and reducing the maintenance cost; and the graphite plate 18 is combined and connected with the metal copper plate 17 and the stainless steel copper layer 19, and the stainless steel copper layer 19 The outer surface of the grounding device is provided with an external absorbent cotton core 20, which can absorb moisture in the soil. Because the grounding device needs to be in a humid environment, otherwise the surrounding resistance will increase, resulting in a decrease in conductivity. The moisture in the soil will have a saturation. When saturated, the soil will not absorb moisture. At this time, the cotton core can absorb and preserve excess moisture to avoid excessive loss of moisture. When the moisture in the soil decreases, the soil will absorb moisture from the cotton core, thereby achieving feedback and ensuring a humid environment around it. The stainless steel copper layer 19 and the external absorbent cotton core are connected to the grounding device. The core 20 is connected through a card slot, and a cone inner cavity 16 is provided inside the cone grounding component 13, and a resistance reducing agent 12 is provided inside the cone inner cavity 16. A copper connecting cone 14 is provided inside the resistance reducing agent 12, which is connected to the grounding wire. The current in the grounding wire is led out through the copper connecting cone 14 to diffuse it, and the resistance reducing agent 12 and the copper connecting cone 14 are combined and connected with the cone inner cavity 16, and a transfer protection component 15 is provided above the copper connecting cone 14, and the transfer protection component 15 is combined and connected with the copper connecting cone 14.

[0025] Furthermore, a flat top cover 4 is provided above the cone grounding assembly 13 and is made of insulating material. After the filling of the cone is completed, the entire cone is sealed by the cover. At the same time, a line connection and placement device is provided above the cover, and the flat top cover 4 is combined and connected with the cone grounding assembly 13. A sealing interface 6 is provided above the flat top cover 4 for connecting a protective hose equipped with a grounding wire, and the sealing interface 6 is fixedly connected to the flat top cover 4. Insulating handles 5 are provided on both sides of the sealing interface 6, and the insulating handles 5 are connected to the flat top cover 4 by bolts, so as to facilitate the arrangement and installation of the cone.

[0026] Furthermore, an insulating assembly terminal 7 is provided above the sealing interface 6, and the insulating assembly terminal 7 is connected to the sealing interface 6 by an internal thread, which is convenient for installation and ensures the sealing performance of the connection to prevent the entry of underground air and cause aging of the line. A soft rubber sleeve 8 is provided above the insulating assembly terminal 7, and the soft rubber sleeve 8 is fixedly connected to the insulating assembly terminal 7. The grounding wire of the device is arranged in the sleeve and protected by the sleeve so that the grounding wire does not need to be in direct contact with the soil.

[0027] Furthermore, a wiring cavity 23 is provided inside the transfer protection component 15, a sealing cavity 22 is provided above the wiring cavity 23, and a rubber sealing ring is provided inside the sealing cavity 22, which can not only clamp and fix the circuit entering, but also prevent the entry of air. A wiring sensing terminal 25 is provided at the bottom of the wiring cavity 23, and a grounding metal copper wire 24 is provided above the wiring sensing terminal 25. The wiring sensing terminal 25 is electrically connected to the grounding metal copper wire 24 and the copper electrical connection cone 14. The grounding metal copper wire 24 inside the grounding wire is stripped out and then contacted with the wiring sensing terminal 25 to facilitate the conduction of current.

[0028] Furthermore, an inner liner protective layer 21 is provided above the grounding metal copper wire 24 to wrap and protect the internal copper wire, and the inner liner protective layer 21 is connected to the transition protection component 15 through a sealed cavity 22, and a grounding wire group 11 is provided above the inner liner protective layer 21.

[0029] Furthermore, the grounding metal copper wire 24 and the grounding wire group 11 are combined and connected with the inner tank protective layer 21 to improve the safety of the line, and the grounding wire group 11 is combined and connected with the insulating group terminal 7 and the soft rubber sleeve 8 to enhance stability.

[0030] Furthermore, the main conical frame 2 is connected to the conical guide plate 3 through a slot to facilitate assembly and installation of the parts. The conical guide plate 3 is composed of a metal copper plate 17, a graphite plate 18, a stainless steel copper-clad layer 19 and an outer suction cotton core 20, which improves the backflow diversion performance of the device.

[0031] Furthermore, the main conical frame 2 has the same structural shape as the copper grounding cone 14 . A backfill soil material 10 is disposed above the DC grounding element main body 1 , and an external ground 9 is disposed above the backfill soil material 10 .

[0032] Working principle: When in use, the grounding wire on the device is inserted into the soft rubber sleeve 8 and passed through the insulating group connection terminal 7 at the other end. After the line passes through, the protective layer on its surface is peeled off to expose the grounding metal copper wire 24 inside, and the copper wire is inserted into the wiring cavity 23 inside the transfer protection component 15 from the sealing interface 6. After the copper wire enters the wiring cavity 23, the outer liner protective layer 21 will be stuck in the sealing cavity 22 above the wiring cavity 23, and the rubber sealing ring on the inside of the wiring cavity 23 is used to clamp and fix the line entering, and the copper wire is in contact with the wiring sensing terminal 25 at the bottom of the wiring cavity 23, and the grounding copper wire is connected to the copper electric cone 14 through the wiring sensing terminal 25. When it is put into operation, the current in the grounding wire is led out and input through the copper electric cone 14. The diffused current is received by the conical guide plates 3 on all four sides, and the current is dispersed outward into the soil, thereby completing the grounding dispersion function. After the line connection is completed, the insulating group connection terminal 7 with the grounding wire is installed inside the sealing interface 6 to complete the fixation, and then a pit of a specified depth is dug on the ground, and the conical guide plate 3 is placed in the pit, and then the soil is filled. The filling process needs to keep the soft rubber sleeve 8 vertically upward. When the filling is completed, the soft rubber sleeve 8 needs to be higher than the ground to prevent rainwater from seeping in. Finally, the hose is sealed to ensure the sealing performance of the connection and prevent air from entering and causing line aging. The role of the sleeve is to protect the grounding wire so that the grounding wire does not need to be in direct contact with the soil, thereby preventing the substances in the soil from corroding the line.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A grounding device for power electronic equipment, comprising a DC grounding element body (1), characterized in that: The DC grounding element body (1) comprises a conical grounding component (13), the outer surface of the conical grounding component (13) is provided with a main conical frame (2), the main conical frame (2) is provided with conical guide plates (3) around the four sides, the conical guide plates (3) are provided with a metal copper plate (17) on the inner side of the conical guide plate (3), the outer side of the metal copper plate (17) is provided with a graphite plate (18), the outer side of the graphite plate (18) is provided with a stainless steel copper layer (19), and the graphite plate (18) The conical grounding component (13) is combined and connected with a metal copper plate (17) and a stainless steel copper-clad layer (19); an outer surface of the stainless steel copper-clad layer (19) is provided with an outer cotton core (20); and the stainless steel copper-clad layer (19) and the outer cotton core (20) are connected via a slot; a conical inner cavity (16) is provided inside the conical inner cavity (16); a resistance reducing agent (12) is provided inside the conical inner cavity (16); a copper electric connection cone (14) is provided inside the resistance reducing agent (12); and the resistance reducing agent (12) and the copper electric connection cone (14) are connected to each other. The copper electric cone (14) is provided with a transfer protection component (15) above the copper electric cone (14), and the transfer protection component (15) is combined and connected with the copper electric cone (14); a plane top cover (4) is provided above the cone grounding component (13), and the plane top cover (4) is combined and connected with the cone grounding component (13); a sealing interface (6) is provided above the plane top cover (4), and the sealing interface (6) is fixedly connected with the plane top cover (4), and the two ends of the sealing interface (6) are fixedly connected with the plane top cover (4); An insulating handle (5) is provided on each side, and the insulating handle (5) is connected to the flat top cover (4) by bolts; a wiring cavity (23) is provided inside the switching protection component (15), a sealing cavity (22) is provided above the wiring cavity (23), a wiring sensing terminal (25) is provided at the bottom of the wiring cavity (23), a grounding metal copper wire (24) is provided above the wiring sensing terminal (25), and the wiring sensing terminal (25) is electrically connected to the grounding metal copper wire (24) and the copper electric cone (14).

2. A grounding device for power electronic equipment according to claim 1, characterized in that: An insulating assembly terminal (7) is arranged above the sealing interface (6), and the insulating assembly terminal (7) is connected to the sealing interface (6) via an internal thread; a soft rubber sleeve (8) is arranged above the insulating assembly terminal (7), and the soft rubber sleeve (8) is fixedly connected to the insulating assembly terminal (7).

3. A grounding device for power electronic equipment according to claim 1, characterized in that: An inner liner protective layer (21) is arranged above the grounding metal copper wire (24), and the inner liner protective layer (21) is connected to the switching protection component (15) via a sealed cavity (22), and a grounding wire group (11) is arranged above the inner liner protective layer (21).

4. A grounding device for power electronic equipment according to claim 3, characterized in that: The grounding metal copper wire (24) and the grounding wire group (11) are combined and connected with the inner liner protective layer (21), and the grounding wire group (11) is combined and connected with the insulating group connection terminal (7) and the soft rubber sleeve (8).

5. A grounding device for power electronic equipment according to claim 1, characterized in that: The main conical frame (2) is connected to the conical guide plate (3) via a clamping groove, and the conical guide plate (3) is composed of a metal copper plate (17), a graphite plate (18), a stainless steel copper clad layer (19) and an outer cotton core (20).

6. A grounding device for power electronic equipment according to claim 1, characterized in that: The main conical frame (2) has the same structural shape as the copper grounding cone (14); backfill soil (10) is arranged above the DC grounding element main body (1); and an external ground (9) is arranged above the backfill soil (10).

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