阅读说明：本技术 一种船体电气设备的接地装置 (Grounding device of ship electrical equipment ) 是由 赵琳 刘俊红 李淑婧 田庆明 黄伟 赵日升 张弛 季辉 葛呈炜 陈业 陈纯 于 2020-06-11 设计创作，主要内容包括：本发明公开了一种船体电气设备的接地装置,包括：电气设备落地机柜和与电气设备落地机柜连接的接地排,电气设备落地机柜位于船体的集控室内,集控室位于所述船体的第二层甲板,该接地排包括PE电缆块接地排、IE电缆块接地排以及ISE电缆块接地排。其中,PE电缆块接地排的与电气设备落地机柜中的低压线进行连接；IE电缆块接地排与电气设备落地机柜中的信号线进行连接；ISE电缆块接地排与电气设备落地机柜中的安全线进行连接。该船体电气设备的接地装置成本低廉,制作简单,安装方便,能更有效的防止电磁耦合干扰；与此同时,使得电气设备和仪表运行更加可靠；最终能够更有效的保证设备及人员的安全。(The invention discloses a grounding device of electrical equipment of a ship body, which comprises: the ground strip comprises a ground strip of a PE cable block, an IE cable block and an ISE cable block, wherein the ground strip is connected with the ground strip of the electrical equipment, the ground strip of the electrical equipment is positioned in a centralized control room of the ship body, the centralized control room is positioned on a second deck of the ship body, and the ground strip comprises the ground strip of the PE cable block, the ground strip of the IE cable block and the ground strip of the ISE cable block. The PE cable block grounding bar is connected with a low-voltage wire in the electrical equipment floor cabinet; the IE cable block grounding bar is connected with a signal wire in the electric equipment floor cabinet; and the ISE cable block grounding bar is connected with a safety line in the electrical equipment floor cabinet. The grounding device of the electrical equipment of the ship body has the advantages of low cost, simple manufacture and convenient installation, and can effectively prevent electromagnetic coupling interference; meanwhile, the electrical equipment and the instrument can run more reliably; finally, the safety of equipment and personnel can be more effectively ensured.)

1. An earthing device for a ship's hull electrical equipment, characterized in that said earthing device comprises: the ground strip comprises a PE cable block ground strip, an IE cable block ground strip and an ISE cable block ground strip;

the PE cable block grounding bar is connected with a low-voltage wire in the electrical equipment floor cabinet;

the IE cable block grounding bar is connected with a signal wire in the electrical equipment floor cabinet;

and the ISE cable block grounding bar is connected with a safety line in the electrical equipment floor cabinet.

2. The grounding device for electrical equipment on a ship hull as claimed in claim 1, wherein one end of the PE cable block grounding bar is connected with a low-voltage wire in the electrical equipment floor cabinet through a bolt, and the other end of the PE cable block grounding bar is electrically connected with the IE cable block grounding bar or the ISE cable block grounding bar.

3. The grounding device for electrical equipment of ship hull as claimed in claim 1, wherein one end of the IE cable block grounding bar is connected with the signal line in the electrical equipment floor cabinet by a bolt, and the other end is electrically connected with the ISE cable block grounding bar or the PE cable block grounding bar.

4. The grounding device for electrical equipment on a ship hull as claimed in claim 1, wherein one end of the ISE cable block grounding bar is connected with a safety wire in the electrical equipment floor cabinet through a bolt, and the other end of the ISE cable block grounding bar is electrically connected with the IE cable block grounding bar or the PE cable block grounding bar.

5. The grounding device for ship hull electrical equipment as claimed in claim 3, wherein an insulator housing is provided externally of said bolt.

6. The grounding device for electrical equipment of ship hull as claimed in claim 2 or 3, wherein the bottom of said ship hull is extended with an L-shaped carbon steel base support, said carbon steel base support is connected to said grounding bar by said bolt.

7. The grounding device for ship hull electrical equipment as claimed in claim 1, wherein said grounding bar is arranged in a generator room at the lower layer of said centralized control room.

8. The grounding device for ship hull electrical equipment according to claim 1, wherein the grounding row of the PE cable block is 1 x 185mm away from the grounding row of the IE cable block or from the grounding row of the ISE cable block²Is connected to the ground line.

9. The grounding device for electrical equipment of ship hulls as claimed in claim 1, wherein a plurality of connection ports are provided in each of the PE cable block ground row, the IE cable block ground row and the ISE cable block ground row.

10. The grounding device for electrical equipment of ship hulls according to claim 1, wherein the grounding bar is welded at the 500mm position of the lower deck of the centralized control room.

Technical Field

The invention relates to the field of ship manufacturing, in particular to a grounding device of ship electrical equipment.

Background

The large electric floor cabinet is independently grounded in a mode of adding a grounding column on an equipment base, and the electric floor cabinet is connected with the ship body through a grounding wire to be grounded so as to protect the equipment. In marine project ship construction engineering, special dangerous areas such as high-voltage distribution boards, low-voltage distribution boards, centralized control rooms, driving control rooms and electrical equipment rooms cannot eliminate electromagnetic coupling interference only in a grounding column grounding mode, so that the equipment cannot be protected.

How to solve the problem that the effective protection of the electrical equipment in the special dangerous area needs to be solved urgently in the marine project ship construction process.

Disclosure of Invention

The invention aims to overcome the defect that the interference of electromagnetic coupling cannot be eliminated only by adopting the grounding mode of a grounding column in an ocean special dangerous area in the prior art, and provides a grounding device of ship electrical equipment.

The invention solves the technical problems through the following technical scheme:

an earthing device for a ship's hull electrical equipment, the earthing device comprising: the ground strip comprises a PE cable block ground strip, an IE cable block ground strip and an ISE cable block ground strip;

the PE cable block grounding bar is connected with a low-voltage wire in the electrical equipment floor cabinet;

the IE cable block grounding bar is connected with a signal wire in the electrical equipment floor cabinet;

and the ISE cable block grounding bar is connected with a safety line in the electrical equipment floor cabinet.

Preferably, one end of the PE cable block ground bar is connected to a low-voltage line in the electrical equipment floor cabinet by a bolt, and the other end of the PE cable block ground bar is electrically connected to the IE cable block ground bar or to the ISE cable block ground bar.

Preferably, one end of the IE cable block ground bar is connected to a signal line in the electrical equipment floor cabinet by a bolt, and the other end of the IE cable block ground bar is electrically connected to the ISE cable block ground bar or to the PE cable block ground bar.

Preferably, one end of the ISE cable block ground bar is connected to the safety line in the electrical equipment floor cabinet by a bolt, and the other end of the ISE cable block ground bar is electrically connected to the IE cable block ground bar or the PE cable block ground bar.

Preferably, an insulator housing is disposed outside the bolt.

Preferably, an L-shaped carbon steel base support extends from the bottom of the hull, and the carbon steel base support is connected to the ground bar through the bolt.

Preferably, the ground bar is arranged in the generator room at the lower layer of the centralized control room.

Preferably, the PE cable block ground bar and the IE cable block ground bar or the ISE cable block ground bar pass through 1 × 185mm²Is connected to the ground line.

Preferably, each row of the PE cable block ground bar and the IE cable block ground bar or the ISE cable block ground bar is provided with a plurality of connection ports.

Preferably, the grounding bar is welded at the position of 500mm of the lower deck of the centralized control room.

The positive progress effects of the invention are as follows: the grounding bars are welded on the lower deck of the electric floor cabinet, the electric equipment is respectively connected with the grounding bars through the grounding wires, and finally, the grounding bars are connected through the grounding wires. The grounding device of the electrical equipment of the ship body has the advantages of low cost, simple manufacture and convenient installation, and can effectively prevent electromagnetic coupling interference; meanwhile, the electrical equipment and the instrument can run more reliably; finally, the safety of equipment and personnel can be more effectively ensured.

Drawings

Fig. 1 is a schematic front view of a PE cable block ground bar of a grounding device for electrical equipment of a ship hull according to a preferred embodiment of the present invention.

Fig. 2 is a schematic top view of the ground block of the PE cable block of the grounding device for electrical equipment of a ship hull according to a preferred embodiment of the present invention.

Fig. 3is a schematic front view of a grounding bar of an IE cable block of a grounding device of a ship electrical apparatus according to a preferred embodiment of the present invention.

Fig. 4 is a schematic front view of the ground block of the ISE cable block of the grounding device of the electrical equipment of the hull according to the preferred embodiment of the invention.

Fig. 5 is a schematic front view of the connection between the IE cable block ground bar and the PE cable block ground bar of the grounding device of the electrical equipment of the ship hull according to the preferred embodiment of the invention.

Fig. 6 is a schematic top view of a centralized control room in the grounding device of the electrical equipment of the ship hull according to a preferred embodiment of the invention.

Description of reference numerals: the grounding device comprises an electrical equipment floor cabinet 1, a grounding bar 2-1PE cable block, a grounding bar 2-2IE cable block, a grounding bar 2-3ISE cable block, a carbon steel base support 3, a connecting port 4, a bolt 5-1, a bolt 5-2, an insulator shell 6, a centralized control room 7 and a grounding wire 8.

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

As shown in fig. 1 and 2, the grounding device for a ship electrical apparatus of the present embodiment includes: the electric equipment floor cabinet comprises an electric equipment floor cabinet 1 and a grounding bar 2 connected with the electric equipment floor cabinet 1. The ground bar 2 comprises a PE cable block ground bar 2-1, an IE cable block ground bar 2-2 and an ISE cable block ground bar 2-3.

The PE cable block grounding bar 2-1 is connected with a low-voltage wire in the electrical equipment floor cabinet;

the IE cable block grounding bar 2-2 is connected with a signal wire in the electric equipment floor cabinet;

and the ISE cable block grounding bar 2-3is connected with a safety line in the electrical equipment floor cabinet.

Preferably, one end of the grounding bar 2-1 of the PE cable block is connected with a low-voltage wire in the floor cabinet of the electrical equipment through a bolt 5-1, and the other end of the grounding bar is electrically connected with the grounding bar 2-2 of the IE cable block or electrically connected with the grounding bar 2-3 of the ISE cable block.

In this embodiment, as shown in fig. 2, as can be seen from the schematic top view structure of the PE cable block grounding bar of the grounding device of the ship electrical equipment, the grounding bar in the schematic top view structure of the PE cable block grounding bar 2-1 is a rectangular structure, and it can be understood that the present disclosure is not limited thereto, and may be set to a square structure, an oval structure or a diamond structure according to specific practical situations, and will not be described herein again.

Preferably, one end of the IE cable block ground bar 2-2 is connected with a signal line in the floor cabinet of the electrical equipment through a bolt 5-2, and the other end of the IE cable block ground bar is electrically connected with the ISE cable block ground bar 2-3 or electrically connected with the PE cable block ground bar 2-1.

Preferably, one end of the ISE cable block ground bar 2-3is connected with a safety line in the electrical equipment floor cabinet through a bolt 5-2, and the other end is electrically connected with the IE cable block ground bar 2-2 or the PE cable block ground bar 2-1.

In this embodiment, as shown in fig. 3, as can be seen from the schematic structural diagram of the main view of the ground bar of the IE cable block of the electrical equipment on the hull, one end of the ground bar 2-3 of the ISE cable block is connected to the floor cabinet 1 of the electrical equipment by the bolt 5-2. This bolting is done in the same manner as the bolting of the ground bar of the ISE cable block in fig. 4.

Preferably, as shown in fig. 4 and 3, the bolt 5-2 is externally provided with an insulator housing 6.

The IE cable block ground bar 2-2 and the ISE cable block ground bar 2-3 are both signal cable ground bars, and the PE cable ground bar 2-1 is a low-voltage cable ground bar. IEC industry standards specify that the ground bar of a signal cable and the ground bar of a low voltage cable are spaced apart by at least 1 meter. In this embodiment, after one end of the IE cable block ground bar is connected to the signal line in the electrical equipment floor cabinet by a bolt, an insulator housing 6 is provided outside the bolt 5-2. The insulator housing 6 here ensures 3 m outer insulation of the ground bar of the signal cable and finally is connected to the ground with the ground bar 2-1 of the PE cable.

Preferably, the bottom of the hull extends out of an L-shaped carbon steel base support 3, and the carbon steel base support 3is connected to the ground bar by bolts 5-1 and 5-2.

Preferably, as shown in fig. 5, the ground row 2-1 of the PE cable block and the ground row of the IE cable block pass through 1 x 185mm²Is connected to the ground line 8.

In this embodiment, the grounding bar 2-1 of the PE cable block and the grounding bar 2-3 of the ISE cable block may also pass through 1 × 185mm²Is connected to the ground line 8. The connection manner and the connection schematic diagram are similar to those in fig. 5, and are not described herein again.

In this embodiment, the grounding bar 2-1 of the PE cable block and the grounding bar 2-2 of the IE cable block may also be connected by using grounding wires of other specifications, or the grounding bar 2-1 of the PE cable block and the grounding bar 2-3 of the ISE cable block may also be connected, which is not described herein again.

Preferably, the ground bar 2 is welded to the lower deck of the centralized control room 7 at a position of 500 mm.

In this embodiment, as shown in fig. 6, the electrical equipment floor cabinet 1 is located in the centralized control room 7 of the hull, and the centralized control room 7 is located on the second deck of the hull. And welding a PE cable block grounding bar 2-1, an IE cable block grounding bar 2-2 or an ISE cable block grounding bar 2-3 at the 500mm height of a lower deck of the second overtime layer of the ship body, namely a third deck. Conventional electrical equipment can be connected to the IE cable block ground row 2-2 or the ISE cable block ground row 2-3 by using a conventional ground wire, and finally the PE cable block ground row 2-1 and the IE cable block ground row 2-2 or the ISE cable block ground row 2-3 are connected by 1 x 185mm²Is connected to the ground line 8.

Preferably, the ground bar 2 is disposed in the generator room below the centralized control room 7.

In this embodiment, the electrical equipment body with the low-voltage cable of the centralized control room 7 can be grounded separately through the equipment base. The electrical equipment body with signal cables of the centralized control room 7 can be connected with the ground line through the PE cable block ground bar 2-1 and the IE cable block ground bar 2-2 in the generator room in the lower deck in the ground form of ground connection.

Preferably, a plurality of connection ports 4 are provided in each of the PE cable block ground bar 2-1, the IE cable block ground bar 2-2, and the ISE cable block ground bar 2-3.

In the embodiment, each grounding bar is provided with a front group of connecting wires and a rear group of connecting wires respectively, each group of connecting wires is provided with 7 connecting ports, and each connecting port connects the grounding bar 2 with the bottom of the ship body by extending out of an L-shaped carbon steel base support 3 through a bolt 5-1 or 5-2. This bolting may increase the stability and reliability of the connection between the structural members.

The grounding bars are welded on the lower deck of the electric floor cabinet, the electric equipment is respectively connected with the grounding bars through the grounding wires, and finally, the grounding bars are connected through the grounding wires. The grounding device of the electrical equipment of the ship body has the advantages of low cost, simple manufacture and convenient installation, and can effectively prevent electromagnetic coupling interference; meanwhile, the electrical equipment and the instrument can run more reliably; finally, the safety of equipment and personnel can be more effectively ensured.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.