A marine high-power medium-voltage rectifier module with a three-part housing

Abstract

This invention relates to a marine high-power medium-voltage rectifier module with a split-type housing, comprising a rectifier unit, a mounting base, a vibration isolator, an AC input copper busbar, a flexible connector busbar, a fuse, a copper busbar support, a DC output copper busbar, and a split-type housing. The split-type housing has an axial three-part structure, consisting of a left housing, a right housing, and a middle housing, each part of which can be installed and disassembled independently. This invention solves the problem of repairing and replacing components of a high-power medium-voltage rectifier device within a limited cabin space. When the rectifier module malfunctions and requires replacement of the entire rectifier unit, only the fasteners on the flange face between the left and middle housings and on the bottom surface of the left housing need to be removed. Within the limited space, the left housing can be moved to the left, upward, or upper left using a lifting tool. Then, the copper busbar support, copper busbar, AC input copper busbar, and other components can be removed, allowing the entire rectifier unit to be removed from the mounting base for repair or replacement. Finally, all components are reassembled.

Description

Technical Field

[0001] This invention relates to a ship integrated power system and medium-voltage DC electrical equipment, particularly a high-power medium-voltage rectifier module for ships. Background Technology

[0002] The development of high-power medium-voltage rectifier generators for marine applications is currently in its early stages. The high-power medium-voltage rectifier is the core component of this type of generator. The fuses, rectifier tubes, and other components used in the rectifier have a high failure rate. Therefore, the rectifier requires frequent maintenance. Due to the limited space in ship cabins, the installation and maintenance of the generator are extremely difficult, and maintenance of its core component, the rectifier, is often impossible to complete within the cabin.

[0003] Due to the large size and dimensions of high-power medium-voltage rectifiers, their housings are also large, making complete disassembly and assembly impossible within the limited space of a ship's cabin. Therefore, an innovative design is needed to establish a high-power medium-voltage rectifier module with a three-part housing. This design must ensure the robustness of the copper busbar support and enable maintenance and overall replacement of the rectifier components within the limited space of the ship's cabin. Summary of the Invention

[0004] This invention proposes a marine high-power medium-voltage rectifier module with a split-type housing. The housing is divided into three parts: a left housing, a right housing, and a middle housing. Each part can be installed and disassembled independently to ensure the rectifier and its components can be disassembled, repaired, and replaced in the ship's cabin.

[0005] To achieve the above objectives, the technical solution of the present invention is: a marine high-power medium-voltage rectifier module with a split-type enclosure, comprising a rectifier unit, a mounting base, a vibration isolator, an AC input copper busbar, a flexible connector busbar, a fuse, a copper busbar support, a DC output copper busbar, and a split-type enclosure. The split-type enclosure has an axial three-part structure, consisting of a left enclosure, a right enclosure, and a middle enclosure, each of which can be installed and disassembled independently.

[0006] Furthermore, the left cover is used to move independently to the left and upward to complete the disassembly and assembly. The left cover is equipped with an openable left side panel and front and rear side panels.

[0007] Furthermore, the right cover is designed to be moved independently to the right and upward to complete the disassembly and assembly. The right cover is equipped with an openable right side panel and front and rear side panels.

[0008] Furthermore, the middle cover is used to move independently upwards to complete the disassembly and assembly. After the left and right covers are removed, the middle cover can also be moved to the left and right to complete the disassembly and assembly. The top of the middle cover is equipped with an openable top plate.

[0009] Furthermore, the left, right, and middle covers are all steel shell structures, with two air-water coolers integrated inside the middle cover, forming part of the rectifier module cooling system.

[0010] Furthermore, the left, right, and middle covers of the split-type housing are connected by flange faces, with sealing gaskets between the flange faces and fasteners for connection and fixation. After being assembled into a whole, they form the cooling air duct of the rectifier module and also serve as physical protection, with an IP44 protection level.

[0011] Furthermore, the bottom surface of the split-type casing is mounted on the top of the rectifier generator base using fasteners.

[0012] Furthermore, the rectifier unit is a multi-phase bridge rectifier structure, with the positive and negative copper busbars connected by a flexible connector.

[0013] The beneficial effects of this invention are:

[0014] This invention solves the problem of repairing and replacing components of a high-power medium-voltage rectifier within a limited cabin space. When the rectifier module malfunctions and the entire rectifier unit needs to be replaced, a portion of the three-part housing can be removed for operation. Attached Figure Description

[0015] Figure 1 It is the assembly drawing of a marine high-power medium-voltage rectifier module with a split-type casing;

[0016] Figure 2 This is a schematic diagram of the assembled casing;

[0017] Figure 3 This is a schematic diagram of the shell after it has been separated. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1 As shown in Figure 2, a marine high-power medium-voltage rectifier module with a split-type housing according to the present invention comprises a rectifier unit 1, a mounting base 2, a vibration isolator 3, an AC input copper busbar 4, a flexible connector busbar 5, a fuse 6, a copper busbar support 7, a DC output copper busbar 8, and a split-type housing 9. The rectifier module is integrated and installed on the top 10 of the marine medium-voltage rectifier generator.

[0020] This shipboard high-power medium-voltage rectifier module has the following six characteristics:

[0021] Feature 1:

[0022] The split-type casing 9 has an axial three-part structure. The rectifier unit 1 is a multi-phase bridge rectifier structure, which is connected to the positive and negative copper busbars through a flexible connector.

[0023] Feature Two:

[0024] like Figure 3As shown, the split-type housing 9 is divided into three parts: left housing 16, right housing 18, and middle housing 17. The left housing 16, right housing 18, and middle housing 17 are all steel shell structures. The middle housing 17 integrates two air-water coolers 15, which are part of the rectifier module cooling system. Each part of the housing can be installed and disassembled independently to ensure the rectifier module and its components can be easily installed, repaired, and replaced within the ship's cabins.

[0025] Feature 3:

[0026] like Figure 2 As shown in Figure 3, as part of the split-type housing 9, the left housing 16 can be moved to the left and upward to complete the disassembly and assembly, and its left side panel 11 and front and rear side panels 12 can be opened; the right housing 18 can be moved to the right and upward to complete the disassembly and assembly, and its right side panel 20 and front and rear side panels 19 can be opened; the middle housing 17 can be moved upward independently to complete the disassembly and assembly. After the left and right housings are removed, the middle housing can also be moved to the left and right to complete the disassembly and assembly, and its top panel 14 can be opened.

[0027] Feature 4:

[0028] The modular housing 9 is connected by flanges, with gaskets 13 between the flanges. The flanges are secured with fasteners, forming a cooling duct for the rectifier module and providing physical protection at an IP44 rating. The bottom of the housing is mounted on top of the rectifier generator 10 base using fasteners.

[0029] Feature 5:

[0030] The split-type structure design of the casing enables the maintenance and replacement of the rectifier module within a limited space.

[0031] Taking the repair and replacement of the left rectifier module as an example, the specific operation process is as follows:

[0032] When the rectifier unit 1 needs to be repaired or replaced as a whole, only the fasteners on the flange face between the left cover and the middle cover and on the bottom surface of the left cover need to be removed. In the limited space, the left cover can be moved to the left, up or to the upper left by a lifting tool. Then, the copper busbar support 7, copper busbar 8, AC incoming copper busbar 4 and other components are removed. Then, the rectifier unit as a whole is removed from the mounting base for repair or replacement. Finally, all components are reassembled.

[0033] Feature Six:

[0034] The high-power medium-voltage rectifier module is the core component of the marine medium-voltage rectifier generator. It boasts a power output of up to 20MW and a DC output voltage of 4kV. It consists of four three-phase rectifier units, each fixed to the mounting base via vibration isolators. The mounting base is welded and fixed to the top of the medium-voltage rectifier generator's 10-unit frame.

Claims

1. A marine high-power medium-voltage rectifier module with a split-type housing, characterized in that: The system includes a rectifier unit, mounting base, vibration isolator, AC input copper busbar, flexible connector busbar, fuse, copper busbar support, DC output copper busbar, and a split-type housing. The split-type housing has an axial three-part structure, consisting of a left cover, a right cover, and a middle cover, each of which can be installed and disassembled independently. The left cover is used to move independently to the left and upward for disassembly and assembly, and it has an openable left side panel and front and rear side panels. The right cover is used to move independently to the right and upward for disassembly and assembly, and it has an openable right side panel and front and rear side panels. The middle cover is used to move independently upward for disassembly and assembly. After the left and right covers are removed, the middle cover can also be moved to the left and right for disassembly and assembly, and it has an openable top panel. The left, right, and middle covers of the split-type housing are connected by flange faces with sealing gaskets between them and are fixed by fasteners. When assembled into a whole, they form the cooling air duct of the rectifier module and also provide physical protection, with an IP44 protection rating.

2. The marine high-power medium-voltage rectifier module with a split-type housing according to claim 1, characterized in that: The left, right, and middle covers are all steel shell structures. The middle cover integrates two air-water coolers, which are part of the rectifier module cooling system.

3. The marine high-power medium-voltage rectifier module with a split-type housing according to claim 1, characterized in that: The split-type housing is mounted on top of the rectifier generator base using fasteners.

4. The marine high-power medium-voltage rectifier module with a split-type housing according to claim 1, characterized in that: The rectifier unit is a multi-phase bridge rectifier structure, and the positive and negative copper busbars are connected by a flexible connector.

Images