A flexible straight converter valve power module replacement device

Abstract

The utility model relates to the technical field of converter valve power module, provide a kind of flexible direct current converter valve power module replacement module, including valve tower, converter valve power module, two hoisting mechanisms and material changing mechanism;The converter valve power module is set on the valve tower;The material changing mechanism includes adjusting assembly, two positioning supports and moving assembly;The positioning support is symmetrically arranged on the two sides of adjusting assembly, and is connected with adjusting assembly;The moving assembly is set on positioning support, and one end of converter valve power module is moved to moving assembly and moves out of valve tower;The hoisting mechanism is symmetrically arranged, and one-to-one corresponds with positioning support, one end is connected with positioning support, and the other end is connected with valve tower top outer frame;The valve tower, hoisting mechanism and positioning support form triangular support structure.The utility model solves the problem that existing replacement device has skew risk and needs operator long-time operation.

Description

Technical Field

[0001] This utility model relates to the technical field of converter valve power module, and in particular to a flexible DC converter valve power module replacement module. Background Technology

[0002] The flexible DC converter valve power module replacement device is an electromechanical integrated device used in flexible DC transmission systems to enable the rapid and safe replacement of converter valve power modules. During the operation or maintenance of the converter valve, it accurately locates and efficiently replaces faulty or aging power modules to ensure the stable operation of the flexible DC system.

[0003] In existing technologies, the replacement of flexible vertical power modules typically relies on a combination of tooling changes and aerial work platforms. The specific operation involves first utilizing the lifting and leveling capabilities of the aerial work platform to construct a stable high-altitude work platform. Based on this, a guide rail or sliding rail system is installed to ensure the power module can be smoothly transferred and docked at high altitude, ultimately allowing the new power module to be safely moved back into the valve tower.

[0004] However, in practical applications, this method of operation has certain safety hazards: when the tooling is attached to one side of the aerial work platform, there may be a risk of tipping over or tilting, which poses a threat to the safety of the operators; in addition, due to the special nature of high-altitude operations, operators need to exert force continuously for a long time, which quickly consumes physical strength, thus leading to a longer working time and a reduction in installation efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a power module replacement device for a flexible DC converter valve, which integrates smooth lifting, precise positioning, assisted transfer and docking functions, and solves the problems of existing replacement devices having the risk of tilting and requiring operators to work for a long time.

[0006] The solution adopted in this utility model is as follows: A power module replacement device for a flexible DC converter valve includes a valve tower, a converter valve power module, two hoisting mechanisms, and a material replacement mechanism. The converter valve power module is mounted on the valve tower. The material replacement mechanism includes an adjustment component, two positioning brackets, and a moving component. The positioning brackets are symmetrically arranged on both sides of the adjustment component and connected to it. The moving component is mounted on the positioning brackets, and one end of the converter valve power module moves onto the moving component and is removed from the valve tower. The hoisting mechanisms are symmetrically arranged, corresponding one-to-one with the positioning brackets, with one end connected to the positioning bracket and the other end connected to the outer frame at the top of the valve tower. The valve tower, hoisting mechanisms, and positioning brackets form a triangular support structure.

[0007] Furthermore, the adjustment assembly includes a housing, a threaded rod, two movable parts, and a connecting rod; the housing is disposed below the movable assembly; the threaded rod is disposed inside the housing, with one end penetrating the housing and extending out of the inner wall of the housing; the two movable parts are symmetrically disposed inside the housing, respectively located on both sides of the threaded rod; one end of the connecting rod is connected to the side wall of the movable part, and the other end is connected to the positioning bracket.

[0008] Furthermore, the connecting rod is symmetrically arranged about the center point of the two moving parts, and the connecting rod is movably connected to the side wall of the moving part and the positioning bracket by means of hinge.

[0009] Furthermore, the two moving parts have opposite threads on the threaded rod.

[0010] Furthermore, one end of the positioning bracket is provided with a support clip, which has a U-shaped groove structure; the positioning bracket is engaged with the outer frame at the bottom of the valve tower through the support clip.

[0011] Furthermore, a slot is provided on the upper side of the positioning bracket, and one end of the hoisting mechanism is retracted into the slot.

[0012] Furthermore, the moving component includes a drive source, a connecting rod, a conveying roller, and a conveyor belt; the drive source is disposed on the side wall of one end of one of the positioning brackets; one end of the connecting rod is connected to the inner side wall of the positioning bracket; the conveying roller is slidably connected to the connecting rod and is disposed on the positioning bracket via the connecting rod; one end of one of the connecting rods extends through the positioning bracket and is connected to the output end of the drive source; the conveyor belt is disposed on the outer wall of the conveying roller.

[0013] Furthermore, the hoisting mechanism includes a first connecting plate, a second connecting plate, and a fastener; one end of the first connecting plate is disposed in the slot; the second connecting plate is movably connected to the first connecting plate and is movably disposed on the positioning bracket via the first connecting plate; the fastener is disposed at the end of the second connecting plate away from the first connecting plate and is engaged with the outer frame at the top of the valve tower.

[0014] Furthermore, the first connecting plate and the second connecting plate are provided with multiple slots at equal intervals, and the slots on the first connecting plate and the second connecting plate are of the same specification.

[0015] Furthermore, the conveying roller and the insertion rod are slidably connected, specifically: the inner wall of the conveying roller is provided with a groove, and the outer wall of the insertion rod inside the conveying roller is provided with a protrusion that matches the groove, so that the insertion rod and the conveying roller slide together through the protrusion and the groove.

[0016] The beneficial effects of this utility model are as follows: This utility model discloses a power module replacement device for a flexible DC converter valve. By pulling the second connecting plate, the first connecting plate extends outward, allowing the fastener to connect to the outer frame at the top of the valve tower. This provides stable suspension support for the replacement mechanism, preventing the risk of shaking or displacement during power module replacement due to loose positioning brackets. Furthermore, this utility model allows for flexible adjustment of the distance between the two positioning brackets via an adjustable component, enabling the device to adapt to the size requirements of different power module specifications. This saves tooling positioning time and improves the practicality and replacement efficiency of the device.

[0017] Advantages of the present invention in additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0019] Figure 1 This is a schematic diagram of the installation of the power module replacement device for the flexible DC converter valve in an embodiment of this utility model. Figure 2 This is a partial structural schematic diagram of the power module replacement device for the flexible DC converter valve in an embodiment of this utility model. Figure 3 This is a schematic diagram of the material changing mechanism in an embodiment of this utility model; Figure 4 This is a schematic diagram of the moving component structure in an embodiment of this utility model; Figure 5 This is a schematic diagram of the plug-in rod structure in an embodiment of this utility model.

[0020] In the diagram, 1 is the valve tower; 2 is the converter valve power module; 3 is the hoisting mechanism; 31 is the first connecting plate; 32 is the second connecting plate; 33 is the fastener; 4 is the material changing mechanism; 41 is the adjusting component; 411 is the housing; 412 is the threaded rod; 413 is the moving part; 414 is the connecting rod; 42 is the positioning bracket; 43 is the moving component; 431 is the drive source; 432 is the plug-in rod; 433 is the conveyor roller; and 434 is the conveyor belt. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this utility model.

[0023] like Figure 1 As shown in the figure, this embodiment discloses a power module replacement device for a flexible DC converter valve. The device includes a valve tower 1, a converter valve power module 2, two hoisting mechanisms 3, and a material replacement mechanism 4. The converter valve power module 2 is mounted on the valve tower 1, and the two hoisting mechanisms 3 are respectively connected to the valve tower 1 and the material replacement mechanism 4.

[0024] In this embodiment, the valve tower 1 has an installation space inside, which allows the converter valve power module 2 to be horizontally arranged and installed in the installation space of the valve tower 1 through a plug-in structure, so as to realize the core functions of power rectification and inversion.

[0025] like Figure 2 - Figure 5 As shown, specifically: The material changing mechanism 4 includes an adjusting component 41, two positioning brackets 42, and a moving component 43. The two positioning brackets 42 are symmetrically arranged on both sides of the adjusting component 41 and connected to the adjusting component 41; the moving component 43 is arranged on the positioning brackets 42, and one end of the converter valve power module 2 moves onto the moving component 43 to move out of the valve tower 1.

[0026] The adjusting assembly 41 includes a housing 411, a threaded rod 412, two moving parts 413, and multiple connecting rods 414. The housing 411 is located below the moving assembly 43; the threaded rod 412 is located inside the housing 411, with one end penetrating through the housing 411 and extending out of the inner wall of the housing 411; the two moving parts 413 are symmetrically arranged inside the housing 411, located on both sides of the threaded rod 412; one end of the connecting rod 414 is connected to the side wall of the moving part 413, and the other end is connected to the positioning bracket 42.

[0027] It should be noted that in this embodiment, the threaded rod 412 is a double-threaded screw, and the two moving parts 413 have opposite threads on the threaded rod 412, so that when the operator rotates the part of the threaded rod 412 that extends out of the housing 411, the two moving parts 413 can move synchronously towards each other or synchronously in opposite directions along the threaded rod 412.

[0028] In this embodiment, each of the two side walls of each movable component 413 is connected to one end of a connecting rod 414. The connecting rods 414 are symmetrically arranged about the center point of each movable component 413, for a total of four connecting rods 414. The ends of the two connecting rods 414 located on the same side of the two movable components 413 that are away from the movable component 413 are connected to the side wall of the positioning bracket 42 on that side.

[0029] The adjusting component 41 is used to adjust the distance between the two positioning brackets 42. When adjusting the distance between the positioning brackets 42, the operator holds the end of the threaded rod 412 extending from the housing 411 and rotates it, causing the threaded rod 412 to drive the two moving parts 413 to move synchronously. As the moving parts 413 move, they drive the connecting rod 414 to move synchronously. At this time, the included angle between the connecting rod 414, the moving parts 413, and the positioning brackets 42 will change synchronously, thereby driving the two positioning brackets 42 to move closer or further apart, thus achieving the adjustment of the distance between the two positioning brackets 42 and avoiding affecting the alignment accuracy with the subsequent converter valve power module 2.

[0030] In addition, the connecting rod 414 is movably connected to the side wall of the moving part 413 and the positioning bracket 42 by means of hinge, which avoids stress concentration caused by rigid connection, ensures that the two positioning brackets 42 move synchronously and smoothly, effectively prevents jamming or displacement during adjustment, and improves the stability of device adjustment.

[0031] One end of the positioning bracket 42 is equipped with a support clip, which has a U-shaped groove structure. The groove size is adapted to the bottom outer frame of the valve tower 1. Through the engagement of the support clip with the bottom outer frame of the valve tower 1, and in conjunction with the connection of the hoisting mechanism 3, the resulting double support structure significantly enhances the load-bearing capacity of the replacement device. This design ensures that even under heavy loads, the replacement device maintains structural stability and integrity, effectively preventing device deformation or component loosening due to uneven or excessive stress, thereby guaranteeing the safety and smooth progress of the replacement operation.

[0032] In this embodiment, a slot is provided on the upper side of the positioning bracket 42, and the hoisting mechanism 3 is rotatably mounted in the slot through a bearing. The length of the slot is adapted to the length of the hoisting mechanism 3, so that the hoisting mechanism 3 can be rotated and retracted into the slot, avoiding the hoisting mechanism 3 from being exposed when idle, and improving the convenience of device storage and maintenance.

[0033] Specifically, the moving component 43 includes a drive source 431, a connecting rod 432, a conveying roller 433, and a conveyor belt 434. The drive source 431 is disposed on the side wall of one end of one of the positioning brackets 42; the conveying roller 433 is disposed on the positioning bracket 42 via the connecting rod 432, and each conveying roller 433 is slidably connected to two connecting rods 432, with one end of each connecting rod 432 correspondingly connected to the inner side wall of the two positioning brackets 42; the connecting rod 432 is keyed to the conveying roller 433, and one end of one connecting rod 432 extends through the positioning bracket 42 and connects to the output end of the drive source 431; the conveyor belt 434 is disposed on the outer wall of the conveying roller 433.

[0034] It should be noted that the sliding connection between each conveyor roller 433 and its corresponding two insertion rods 432 is as follows: Each conveyor roller 433 has a groove on its inner wall, and the two insertion rods 432 inside the conveyor roller 433 have protrusions on their outer walls that match the grooves. Through the sliding engagement of the protrusions and grooves, the insertion rods 432 can slide along the inner wall of the conveyor roller 433. Since the movement of the positioning brackets 42 during the adjustment of the spacing between the positioning brackets 42 causes the insertion rods 432 to move synchronously, the insertion rods 432 adaptively adjust their positions according to the change in the spacing of the positioning brackets 42. This sliding connection between each conveyor roller 433 and its corresponding two insertion rods 432 avoids the problem of jamming caused by rigid interference between the conveyor roller 433 and the insertion rods 432, ensuring the smoothness of the overall adjustment process.

[0035] Additionally, it should be noted that the plug-in rod 432 and the positioning bracket 42 are rotatably connected via bearings. When the drive source 431 drives the plug-in rod 432 to rotate, the limiting action of the protrusion and groove drives the conveyor roller 433 to rotate synchronously, thereby driving the conveyor belt 434 to transport the converter valve power module 2. Furthermore, the plug-in rod 432 has a solid structure design, further enhancing its resistance to deformation and ensuring the stability and reliability of the conveying process.

[0036] In this embodiment, the drive source 431 is preferably a servo motor, which can adjust the speed of the conveyor roller 433 and the conveyor belt 434. This allows for flexible adjustment of the speed according to the actual working scenario, enabling the conveyor belt 434 to deliver the converter valve power module 2 at a stable speed.

[0037] Two hoisting mechanisms 3 are symmetrically arranged, each corresponding to a positioning bracket 42. One end of each hoisting mechanism 3 is connected to the positioning bracket 42, and the other end is connected to the outer frame at the top of the valve tower 1. The valve tower 1, the hoisting mechanism 3, and the positioning bracket 42 form a triangular support structure.

[0038] Specifically, the hoisting mechanism 3 includes a first connecting plate 31, a second connecting plate 32, and a fastener 33. One end of the first connecting plate 31 is positioned within a slot on the upper side of the positioning bracket 42; the second connecting plate 32 is movably connected to the first connecting plate 31 and is movably mounted on the positioning bracket 42 via the first connecting plate 31; the fastener 33 is located at the end of the second connecting plate 32 furthest from the first connecting plate 31, and the fastener 33 engages with the outer frame at the top of the valve tower 1.

[0039] In this embodiment, multiple slots are provided at equal intervals on the first connecting plate 31 and the second connecting plate 32, and the slots on the first connecting plate 31 and the second connecting plate 32 are of the same specification. The length of the second connecting plate 32 extending out of the first connecting plate 31 can be adjusted by inserting a pin into the corresponding slot, thereby improving the versatility of the device.

[0040] During the retrieval process, the lifting platform of the aerial work platform is used as an aid. After the relevant personnel rise to a suitable height, they can work on the lifting platform of the aerial work platform to adjust the position of the two positioning brackets 42. After the adjustment is completed, the support clips on the positioning brackets 42 are engaged with the outer frame at the bottom of the valve tower 1. At the same time, by pulling the second connecting plate 32, the second connecting plate 32 slides out along the inner wall of the first connecting plate 31, ensuring that the buckle 33 at the upper end of the second connecting plate 32 can be engaged with the outer frame at the upper end of the valve tower 1. Then, the operator inserts the pin into the corresponding slots of the first connecting plate 31 and the second connecting plate 32, thus completing the length locking of the second connecting plate 32.

[0041] In this embodiment, the working principle of the flexible DC converter valve power module replacement device is as follows: The operator can flexibly adjust the distance between the two positioning brackets 42 by adjusting component 41, so that the moving component 43 on the positioning bracket 42 can correspond to the power module 2 of the converter valve to be replaced in the valve tower 1, and achieve alignment.

[0042] After adjustment, the operator first engages the support clips on the positioning bracket 42 with the corresponding outer frame at the bottom of the valve tower 1, and then firmly connects the two hoisting mechanisms 3 with the outer frame at the top of the valve tower 1, so that the valve tower 1, the hoisting mechanism 3 and the positioning bracket 42 form a triangular support structure, thereby greatly improving the device's anti-overturning ability during the replacement of the converter valve power module 2, and effectively avoiding shaking or displacement caused by uneven force.

[0043] After installation, the operator moves one end of the converter valve power module 2 to be replaced onto the moving component 43. By starting the drive source 431, the output end of the drive source 431 drives the plug rod 432 to rotate, which in turn drives the conveyor roller 433 to rotate synchronously. This causes the conveyor roller 433 to drive the conveyor belt 434, which is sleeved on the outer wall of the conveyor roller 433, to rotate, thereby conveying the converter valve power module 2 and assisting the operator in replacement.

[0044] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A power module replacement device for a flexible DC converter valve, characterized in that, The system includes a valve tower, a converter valve power module, two hoisting mechanisms, and a material changing mechanism. The converter valve power module is mounted on the valve tower. The material changing mechanism includes an adjustment component, two positioning brackets, and a moving component. The positioning brackets are symmetrically arranged on both sides of the adjustment component and connected to it. The moving component is mounted on the positioning brackets, and one end of the converter valve power module moves onto the moving component and is removed from the valve tower. The hoisting mechanisms are symmetrically arranged, corresponding one-to-one with the positioning brackets, with one end connected to the positioning bracket and the other end connected to the outer frame at the top of the valve tower. The valve tower, hoisting mechanism, and positioning brackets form a triangular support structure.

2. The power module replacement device for a flexible DC converter valve as described in claim 1, characterized in that, The adjustment assembly includes a housing, a threaded rod, two movable parts, and a connecting rod; the housing is located below the movable assembly; the threaded rod is located inside the housing, with one end penetrating the housing and extending out of the inner wall of the housing; the two movable parts are symmetrically arranged inside the housing, located on both sides of the threaded rod; one end of the connecting rod is connected to the side wall of the movable part, and the other end is connected to the positioning bracket.

3. The power module replacement device for a flexible DC converter valve as described in claim 2, characterized in that, The connecting rod is symmetrically arranged about the center point of the two moving parts, and the connecting rod is movably connected to the side wall of the moving part and the positioning bracket by means of hinge.

4. The power module replacement device for a flexible DC converter valve as described in claim 2, characterized in that, The two moving parts have opposite threads on the threaded rod.

5. The power module replacement device for a flexible DC converter valve as described in claim 1, characterized in that, One end of the positioning bracket is provided with a support clip, which has a U-shaped groove structure; the positioning bracket is engaged with the bottom outer frame of the valve tower through the support clip.

6. The power module replacement device for a flexible DC converter valve as described in claim 1, characterized in that, The upper side of the positioning bracket has a slot, and one end of the hoisting mechanism is retracted into the slot.

7. The power module replacement device for a flexible DC converter valve as described in claim 1, characterized in that, The moving assembly includes a drive source, a connecting rod, a conveying roller, and a conveyor belt; the drive source is disposed on the side wall of one end of one of the positioning brackets; one end of the connecting rod is connected to the inner side wall of the positioning bracket; the conveying roller is slidably connected to the connecting rod and is disposed on the positioning bracket via the connecting rod; one end of one of the connecting rods extends through the positioning bracket and is connected to the output end of the drive source; the conveyor belt is disposed on the outer wall of the conveying roller.

8. The power module replacement device for a flexible DC converter valve as described in claim 6, characterized in that, The hoisting mechanism includes a first connecting plate, a second connecting plate, and a fastener; one end of the first connecting plate is disposed in the slot; the second connecting plate is movably connected to the first connecting plate and is movably disposed on the positioning bracket through the first connecting plate; the fastener is disposed at the end of the second connecting plate away from the first connecting plate and is engaged with the outer frame at the top of the valve tower.

9. The power module replacement device for a flexible DC converter valve as described in claim 8, characterized in that, The first connecting plate and the second connecting plate are provided with multiple slots at equal intervals, and the slots on the first connecting plate and the second connecting plate are of the same specification.

10. The power module replacement device for a flexible DC converter valve as described in claim 7, characterized in that, The conveying roller and the plug rod are slidably connected, specifically: the inner side wall of the conveying roller is provided with a groove, and the outer wall of the plug rod inside the conveying roller is provided with a protrusion that matches the groove, so that the plug rod and the conveying roller slide together through the protrusion and the groove.

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