Drawing frame type valve tower structure for flexible low-frequency power transmission container

Abstract

The invention relates to a drawing frame type valve tower structure for a flexible low-frequency power transmission container. The drawing frame type valve tower structure comprises a supporting frame structure, a cooling water path structure, a light path structure and a bridge arm. The supporting frame structure is composed of multiple layers of supporting structures, each layer of supporting structure is provided with a bridge arm, each bridge arm is composed of a plurality of power modules, and the power modules can be pulled out and pushed in on the supporting structures; the cooling water path structure comprises a main water path and a branch water path, and the main water path is arranged on the side portion of the drawing frame type valve tower structure and comprises a water inlet main path and a water outlet main path. The branch waterways are arranged at the front part of the drawing frame type valve tower structure and are divided into a plurality of groups, and each group of branch waterways comprises a water inlet branch and a water outlet branch; and the two branches are connected with the power module. The invention has the advantages that the pull-out frame structure is adopted, one bridge arm is horizontally arranged on one layer, the power modules are positioned on the supporting frame structure, and the limiting and guiding structures are adopted, so that the power modules are more convenient to mount, dismount and maintain.

Description

Technical Field

[0001] The present invention belongs to the technical field of flexible low-frequency power transmission systems, and in particular relates to a drawable frame type valve tower structure for a flexible low-frequency power transmission container. Background Art

[0002] At present, my country has proposed three power transmission schemes for wind power plants. The first is high-voltage AC transmission, which has been used for a long time and is mainly suitable for offshore transmission. The second is high-voltage DC transmission. High-voltage DC transmission has developed vigorously in recent years, and high-voltage and high-current DC projects have continued to increase. It is usually suitable for offshore distances of more than 90km. The third is flexible low-frequency transmission. The flexible low-frequency transmission technology scheme proposed in recent years can reduce the cost of large offshore wind power systems.

[0003] Whether it is flexible direct current transmission or flexible low-frequency transmission, the core equipment is the converter valve. The main structural types of converter valves are tower structures or cabinet structures. In the case of sea transportation and complex offshore environments, additional binding measures are required for transportation, and the operation and maintenance friendliness is also poor. Summary of the invention

[0004] The purpose of the present invention is to provide a pull-out frame valve tower structure for a flexible low-frequency power transmission container, which omits the binding measures of the valve tower during sea transportation. At the same time, it can be installed inside the container, has strong sea adaptability, is convenient for transportation, and improves operation and maintenance friendliness.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A pull-out frame valve tower structure for a flexible low-frequency power transmission container, comprising a support frame structure, a cooling water path structure, an optical path structure, and a bridge arm;

[0007] The supporting frame structure is composed of multiple layers of supporting structures, each layer of supporting structures is equipped with a bridge arm, and the bridge arm is composed of several power modules, and the power modules can be pulled out and pushed in on the supporting structure;

[0008] The cooling water circuit structure includes a main water circuit and a branch water circuit. The main water circuit is arranged on the side of the pull-out frame valve tower structure, including two main circuits, one for water inlet and one for water outlet. The branch water circuit is arranged on the front of the pull-out frame valve tower structure, and is divided into multiple groups. Each group of branch water circuits includes two branches, one for water inlet and one for water outlet. The two branches are connected to the power module.

[0009] The optical path structure includes a main optical fiber trough box and a vertical optical fiber trough box. The optical fiber of each layer of power module enters the vertical optical fiber trough box, and several vertical optical fiber trough boxes are gathered into the main optical fiber trough box.

[0010] The support frame structure comprises a plurality of insulating beams and supporting plates. Four insulating beams and a plurality of supporting plates form a group, and adjacent insulating beams between groups are shared.

[0011] The insulating beam and the vertical optical fiber trough box are an integrated structure.

[0012] The rear part of the support plate is provided with a limiting structure and an introduction structure, the limiting structure is provided with a positioning hole or a guide sleeve, the introduction structure is fixedly connected to the power module, and the introduction structure can be inserted into the positioning hole.

[0013] In each layer of the supporting structure, all water inlet branches connected to the bridge arm are connected to the water inlet main road, and all water outlet branches connected to the bridge arm are connected to the water outlet main road.

[0014] The main waterway and the branch waterway are both made of PVDF pipes.

[0015] The bottom of the supporting frame structure is fixedly connected to the floor of the container through a metal bracket and an insulating beam; the top of the supporting frame structure is fixedly connected to the top plate of the container through a channel steel frame structure and an insulating beam.

[0016] The metal bracket comprises a fixed bent plate and a supporting plate. The fixed bent plate is used to connect the insulating beam and the supporting plate. The supporting plate is provided with a mounting hole. The main optical fiber slot box is horizontally fixed on the supporting plate.

[0017] The power modules of the bridge arms are connected via a cascade row, which is a bent structure.

[0018] The main water channel and the branch water channel are fixedly connected to the support frame structure through resin pipe clamps.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention adopts a pull-out frame structure, a bridge arm is horizontally arranged in one layer, the power module is located on the supporting frame structure, and a limit and guide structure is adopted, which is more convenient for installation and disassembly of the power module, convenient for maintenance, and effectively reduces operation and maintenance time.

[0021] 2. The insulating beams that constitute the supporting frame structure can be used as supporting components of the power modules, as insulating partitions between power modules, and as branch vertical optical fiber trough boxes, effectively saving the cost of structural parts and converter valves of the flexible valve tower.

[0022] 3. The present invention adopts a staggered design for the AC terminals and DC terminals of the power module, a bending design for the cascade row, and a staggered arrangement, so that under the same power module structure conditions, the DC positive and negative poles of the valve tower are arranged on the same side of the valve tower, making it very convenient to connect it to other DC field equipment.

[0023] 4. The present invention is a structure suitable for container installation, with the top and bottom being channel steel frames and metal brackets respectively, which are used to connect with the valve tower body and the container body, so as to achieve the stability of the valve tower during sea transportation and ensure good grounding, and at the same time have good environmental adaptability to the sea and are moisture-proof and salt spray-proof. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the valve tower structure of the present invention.

[0025] Figure 2 yes Figure 1 A partial schematic diagram of .

[0026] Figure 3 It is a schematic diagram of the cooling water channel structure.

[0027] Figure 4 It is a schematic diagram of the connection structure of the cascade row.

[0028] Figure 5 It is a schematic diagram of installing the valve tower of the present invention in a container.

[0029] Figure 6 It is a schematic structural diagram of the rear part of the power module of the present invention.

[0030] Figure 7 yes Figure 6 A partial schematic diagram of .

[0031] In the figure: 1- container 2- power module 3- insulation beam 4- stage row 5- fixed bent plate 6- main optical fiber trough box 7- support plate 8- resin pipe clamp 9- channel steel frame 10- water inlet pipe 11- water outlet pipe 12- branch water pipe 13- tapered guide shaft 14- support plate. DETAILED DESCRIPTION

[0032] The present invention is described in detail below in conjunction with the accompanying drawings, but it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0033] Embodiment 1

[0034] Take the 6-layer valve tower structure as an example:

[0035] See Figure 1 , Figure 6, a pull-out frame valve tower structure for a flexible low-frequency power transmission container, the entire valve tower structure is 6 layers, each layer is composed of a bridge arm composed of several power modules 2, and the 6 layers form 6 bridge arms of the converter valve. The support frame structure can accommodate 6 layers of power modules 2, and each layer can be installed with a power module 2 with a bridge arm. The pull-out frame valve tower structure includes a support frame structure, a cooling water path structure, an optical path structure, and a bridge arm. The support frame structure is composed of 6 layers of support structures, each layer of support structure is installed with a bridge arm, and the bridge arm is composed of several power modules 2, and the power module 2 can be pulled out and pushed in on the support structure.

[0036] See Figure 1 , Figure 3 The cooling water channel structure includes a main water channel and a branch water channel. The main water channel is arranged at the side of the pull-out frame valve tower structure and is responsible for the water supply of the 6-layer power module 2. The main water channel includes two main channels, one water inlet and one water outlet, namely, the water inlet pipe 10 and the water outlet pipe 11. The branch water channel is arranged at the front of the pull-out frame valve tower structure and is divided into 6 layers of branch water channel groups. Each group of branch water channels includes two branch water pipes 12, one water inlet and one water outlet. The two branch water pipes 12 are connected to the power module 2. In each layer of the supporting structure, all the water inlet branch water pipes 12 connected to the bridge arm are connected to the water inlet pipe 10, and all the water outlet branch water pipes 12 connected to the bridge arm are connected to the water outlet pipe 11. The water inlet pipe 10, the water outlet pipe 11, and the branch water pipe 12 are all made of PVDF pipes. The water inlet pipe 10 , the water outlet pipe 11 , and the branch water pipe 12 are all fixedly connected to the insulating beam 3 of the support frame structure through the resin pipe clamp 8 to prevent the water pipe from shaking and displacement during vibration. The resin pipe clamp 8 is installed on the insulating beam 3 .

[0037] The support frame structure includes several insulating beams 3 and support plates 14. Every 4 insulating beams 3 and 6 support plates 14 form a group to form a 6-module support frame. The support frame structure is composed of multiple 6-module support frames. The power module 2 can be pushed in and pulled out on the support frame structure at will. The adjacent insulating beams 3 between the 6-module support frames are shared. The insulating beams 3 and the vertical optical fiber trough box are an integrated structure.

[0038] The optical path structure includes a main optical fiber trough box 6 and a vertical optical fiber trough box. The optical fibers of each layer of power modules 2 enter the vertical optical fiber trough box, and several vertical optical fiber trough boxes are gathered in the main optical fiber trough box 6. The vertical optical fiber trough box is the insulating beam 3. The main optical fiber trough box 6 is arranged in front of the bottom of the valve tower. The optical fibers of each 6 modules enter the branch optical fiber trough box, and the optical fibers in several branch optical fiber trough boxes are gathered in the main optical fiber trough box 6.

[0039] See Figure 1 , Figure 4The upper three-layer bridge arm and the lower three-layer bridge arm adopt two types of cascade 4, so that the lead-out busbar can be set on the same side of the valve tower structure, so that under the same power module 2 structure conditions, the valve tower DC positive and DC negative poles are set on the same side of the valve tower structure, making it very convenient to connect with other DC field equipment. The main water channel is set on the other side of the valve tower structure, making the operation of the valve tower structure safer and more reliable. The cascade 4 connected to the upper three-layer bridge arm adopts a Z-shaped structure with both ends horizontally bent in the middle, so that the AC terminal and DC terminal of the power module 2 are staggered, meeting the voltage insulation distance of the power module 2.

[0040] The upper and lower bridge arms are connected in two cascades, and the module AC and DC terminals are staggered, so that the DC positive and negative polarities are on the same side of the valve tower, which is convenient for AC and DC discrete wiring of the single valve tower structure. The top of the valve tower adopts a channel steel frame 9 structure connected to the valve tower insulation frame and the top plate of the container 1, which increases the stability of the valve tower and safe grounding.

[0041] Embodiment 2

[0042] The difference from the first embodiment is that the pull-out frame valve tower structure adopts a limit structure and an introduction structure to realize the extraction and insertion of the power module 2, thereby reducing the installation error. Figure 5 The limiting structure is fixed at the rear of the support plate 14. The limiting structure is a limiting plate. The limiting plate can be a curved plate, a straight plate or other profiles. The material can be aluminum alloy or other metal materials. The limiting plate can also be formed by bending the rear of the support plate 14 upward. The limiting plate has a positioning hole. Figure 7 The introduction structure is a tapered guide shaft 13 fixedly connected to the power module 2. The end of the tapered guide shaft 13 is conical, which facilitates the tapered guide shaft 13 to penetrate into the positioning hole. The power module 2 is pushed in from the front of the support frame structure, and the power module 2 slides backward on the support plate 14 until it reaches the limit plate, and the tapered guide shaft 13 penetrates into the positioning hole, completing the positioning and introduction of the power module 2.

[0043] In addition, a guide sleeve with a hole in the middle can be fixed on the limit plate, and the tapered guide shaft 13 is inserted into the guide sleeve for positioning, thereby extending the introduction stroke and ensuring the smoothness of pushing the power module 2.

[0044] Embodiment 3

[0045] The difference from the first embodiment is that the drawer frame type valve tower structure is fixed in the container 1 by using a metal bracket, a channel steel frame 9 and other connecting structures.

[0046] See Figure 1 , Figure 2The bottom of the supporting frame structure is fixedly connected to the floor of the container 1 through a metal bracket and an insulating beam 3. The metal bracket includes a fixed bent plate 5 and a support plate 7. The fixed bent plate 5 is used to connect the insulating beam 3 and the support plate 7. The support plate 7 is provided with a mounting hole. The main optical fiber slot box 6 is horizontally fixed on the support plate 7 to achieve safe grounding of the valve tower structure.

[0047] The top of the supporting frame structure adopts a channel steel frame 9 structure, and the insulating beam 3 is fixedly connected to the top plate of the container 1, which increases the stability and safe grounding of the valve tower structure. The channel steel frame 9 is composed of two rows of channel steels, and long holes are opened on the channel steels to adjust the error and achieve an accurate top of the container 1.

[0048] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0049] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A pull-out frame valve tower structure for a flexible low-frequency power transmission container, characterized in that: It includes supporting frame structure, cooling water path structure, optical path structure and bridge arm; The supporting frame structure is composed of multiple layers of supporting structures, each layer of supporting structures is equipped with a bridge arm, and the bridge arm is composed of several power modules, and the power modules can be pulled out and pushed in on the supporting structure; The cooling water circuit structure includes a main water circuit and a branch water circuit. The main water circuit is arranged on the side of the pull-out frame valve tower structure, including two main circuits, one for water inlet and one for water outlet. The branch water circuit is arranged on the front of the pull-out frame valve tower structure, and is divided into multiple groups. Each group of branch water circuits includes two branches, one for water inlet and one for water outlet. The two branches are connected to the power module. The optical path structure includes a main optical fiber trough box and a vertical optical fiber trough box. The optical fiber of each layer of power module enters the vertical optical fiber trough box, and several vertical optical fiber trough boxes are gathered into the main optical fiber trough box.

2. A pull-out frame valve tower structure for a flexible low-frequency power transmission container according to claim 1, characterized in that: The support frame structure comprises a plurality of insulating beams and supporting plates. Four insulating beams and a plurality of supporting plates form a group, and adjacent insulating beams between groups are shared.

3. The pull-out frame valve tower structure for a flexible low-frequency power transmission container according to claim 2, characterized in that: The insulating beam and the vertical optical fiber trough box are an integrated structure.

4. The pull-out frame valve tower structure for a flexible low-frequency power transmission container according to claim 1, characterized in that: The rear part of the support plate is provided with a limiting structure and an introduction structure, the limiting structure is provided with a positioning hole or a guide sleeve, the introduction structure is fixedly connected to the power module, and the introduction structure can be inserted into the positioning hole.

5. The pull-out frame valve tower structure for a flexible low-frequency power transmission container according to claim 1, characterized in that: In each layer of the supporting structure, all water inlet branches connected to the bridge arm are connected to the water inlet main road, and all water outlet branches connected to the bridge arm are connected to the water outlet main road.

6. The pull-out frame valve tower structure for a flexible low-frequency power transmission container according to claim 1, characterized in that: The main waterway and the branch waterway are both made of PVDF pipes.

7. The pull-out frame valve tower structure for a flexible low-frequency power transmission container according to claim 1, characterized in that: The bottom of the supporting frame structure is fixedly connected to the floor of the container through a metal bracket and an insulating beam; the top of the supporting frame structure adopts a channel steel frame structure and an insulating beam to be fixedly connected to the top plate of the container.

8. The pull-out frame valve tower structure for a flexible low-frequency power transmission container according to claim 7, characterized in that: The metal bracket comprises a fixed bent plate and a supporting plate. The fixed bent plate is used to connect the insulating beam and the supporting plate. The supporting plate is provided with a mounting hole. The main optical fiber slot box is horizontally fixed on the supporting plate.

9. The pull-out frame valve tower structure for a flexible low-frequency power transmission container according to claim 1, characterized in that: The power modules of the bridge arms are connected via a cascade row, which is a bent structure.

10. The pull-out frame valve tower structure for a flexible low-frequency power transmission container according to claim 1, characterized in that: The main waterway and the branch waterway are fixedly connected to the support frame structure through resin pipe clamps.

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