Tower submodule bypass switch disassembly and replacement tool and method

Abstract

The invention discloses a disassembly and replacement tool and method for a bypass switch of a submodule on a tower. The disassembly and replacement tool comprises a supporting beam assembly and a hoisting assembly. The lifting assembly is movably arranged at the bottom of the supporting beam assembly, a first connecting part is arranged on the supporting beam assembly, and the lifting assembly is provided with a second connecting part used for being detachably connected with a target converter valve sub-module; the supporting beam assembly is detachably fixed to the position, corresponding to the upper portion of a target converter valve sub-module, of an interlayer framework of the valve tower through the first connecting part. And when the bottom of the supporting beam assembly moves, the hoisting assembly can enter and exit from the gap between the target converter valve sub-module and the adjacent converter valve sub-module. According to the invention, the difficulty of small gaps between the sub-modules and the interlayer framework and between the sub-modules is overcome, the working efficiency of maintenance and replacement of the sub-modules is improved, and the safety risk is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electric power operation, and in particular to a tool and method for disassembling and replacing a submodule bypass switch on a tower. Background Art

[0002] The traditional method of replacing the bypass switch of the flexible DC converter valve submodule is to manually move the submodule on the valve tower to the working platform of the lifting vehicle, and then manually move the new submodule from the working platform to the installation location for installation and testing.

[0003] However, the flexible direct current converter valve submodule has a compact internal structure and weighs 250 kg. In addition, the existing converter valve tower has small gaps between submodules and between submodules and interlayer frames, which makes operation extremely inconvenient. Replacing a submodule bypass switch requires the collaboration of multiple people, which is time-consuming, with high work intensity, high safety risks, and low efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a tool and method for disassembling and replacing a sub-module bypass switch on a tower, thereby reducing the manpower loss and operation time required for replacing the sub-module bypass switch on the tower, improving the operation efficiency of sub-module maintenance and replacement, and reducing safety risks.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A tower submodule bypass switch disassembly and replacement tool, comprising a support beam assembly and a lifting assembly;

[0007] The lifting assembly is movably arranged at the bottom of the support beam assembly, the support beam assembly is provided with a first connection portion, and the lifting assembly is provided with a second connection portion for detachably connecting the target converter valve submodule;

[0008] The support beam assembly is detachably fixed to a position above the target converter valve submodule on the interlayer frame of the valve tower through the first connecting portion;

[0009] When the bottom of the support beam assembly moves, the lifting assembly can enter and exit the gap between the target converter valve submodule and the adjacent converter valve submodule.

[0010] In order to solve the above technical problems, another technical solution adopted by the present invention is:

[0011] A method for disassembling and replacing a tower submodule bypass switch is applied to the above-mentioned tower submodule bypass switch disassembly and replacement tool, comprising the following steps:

[0012] S1. Install the support beam assembly on the interlayer frame of the valve tower at a position corresponding to the position above the target converter valve submodule;

[0013] S2, installing the lifting assembly onto the support beam assembly, controlling the lifting assembly to move below the support beam assembly and enter the gap between the target converter valve submodule and the adjacent converter valve submodule;

[0014] S3, releasing the external wiring of the target converter valve submodule, and connecting the lifting assembly and the target converter valve submodule;

[0015] S4, controlling the lifting assembly to rise and move again, and moving the target converter valve submodule out of the interlayer frame of the valve tower.

[0016] The beneficial effects of the present invention are as follows: a tool and method for disassembling and replacing a submodule bypass switch on a tower is provided, which adopts an external mounting structure that is easy to carry. When a target converter valve submodule needs to be repaired, a support beam assembly is first installed above the target converter valve submodule, and then a lifting assembly is installed. The lifting assembly is moved to pass through the gap between the target converter valve submodule and an adjacent converter valve submodule, and then the target converter valve submodule is slightly lifted by the lifting assembly, and the target converter valve submodule is moved out with the help of the lifting assembly, thereby reducing the manpower loss and operation time required for the replacement operation of the submodule bypass switch on the tower, overcoming the difficulty of small gaps between the submodule and the interlayer frame and between the submodules, improving the operation efficiency of submodule maintenance and replacement, and reducing safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the installation of a tower submodule bypass switch disassembly and replacement tooling on the interlayer frame of the valve tower according to the present invention;

[0018] Figure 2 It is a structural schematic diagram of a support beam assembly of a tool for disassembling and replacing a submodule bypass switch on a tower according to the present invention;

[0019] Figure 3 A schematic diagram of the connection of a movable roller, a hand-adjustable connector and a capacitor suspension rod of a tower submodule bypass switch disassembly and replacement tooling of the present invention;

[0020] Figure 4 A schematic structural diagram of a first boom or a second boom of a tower submodule bypass switch disassembly and replacement tooling of the present invention;

[0021] Figure 5 It is a structural schematic diagram of a second boom of a tool for dismantling and replacing a submodule bypass switch on a tower according to the present invention;

[0022] Figure 6It is a structural schematic diagram of an auxiliary support member of a tool for disassembling and replacing a submodule bypass switch on a tower according to the present invention;

[0023] Figure 7 The present invention is a schematic diagram of the steps of a method for disassembling and replacing a tower submodule bypass switch.

[0024] Description of labels:

[0025] 1. Support beam assembly; 2. First connecting part; 3. Second connecting part; 4. Manually adjustable connecting piece; 5. First hanging arm; 6. Second hanging arm; 7. Capacitor hanging rod; 8. Auxiliary supporting piece; 9. Avoidance groove; 10. Moving roller; 11. Channel steel beam;

[0026] 21. Mounting plate; 22. Bolt connector;

[0027] 41. Turnbuckle bolt; 42. Screw rod. DETAILED DESCRIPTION

[0028] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0029] Please refer to Figures 1 to 6 , a tower submodule bypass switch disassembly and replacement tool, including a support beam assembly 1 and a lifting assembly;

[0030] The lifting assembly is movably arranged at the bottom of the support beam assembly 1, the support beam assembly 1 is provided with a first connection portion 2, and the lifting assembly is provided with a second connection portion 3 for detachably connecting the target converter valve submodule;

[0031] The support beam assembly 1 is detachably fixed to the position above the target converter valve submodule on the interlayer frame of the valve tower through the first connecting portion 2;

[0032] When the bottom of the support beam assembly 1 moves, the lifting assembly can enter and exit the gap between the target converter valve submodule and the adjacent converter valve submodule.

[0033] From the above description, it can be seen that the beneficial effects of the present invention are: by adopting an external mounting structure that is easy to carry, when the target converter valve submodule needs to be repaired, first install the support beam assembly 1 above the target converter valve submodule, and then install the lifting assembly, and move the lifting assembly through the gap between the target converter valve submodule and the adjacent converter valve submodule, and then slightly lift the target converter valve submodule through the lifting assembly, and move the target converter valve submodule out with the help of the lifting assembly, thereby reducing the manpower loss and operation time required for the replacement operation of the submodule bypass switch on the tower, overcoming the difficulties of small gaps between the submodule and the interlayer frame and between the submodules, improving the operation efficiency of submodule maintenance and replacement, and reducing safety risks.

[0034] Further, the lifting assembly includes a manually adjustable connector 4 and a lifting device;

[0035] The upper end of the hand-adjustable connecting member 4 is movably arranged at the bottom of the support beam assembly 1, and the lower end of the hand-adjustable connecting member 4 is connected to the sling;

[0036] The manually adjustable connecting member 4 is used to control the lifting of the sling.

[0037] From the above description, it can be seen that the lifting assembly consists of a manually adjustable connector 4 and a lifting device; when working on the tower, the operator manually adjusts the manually adjustable connector 4 to realize the lifting of the lifting device to ensure that the second connecting part 3 corresponds to the connection point on the target converter valve submodule, and flexibly adjusts the lifting height after connection to ensure that the target converter valve submodule is removed labor-savingly and smoothly.

[0038] Further, the sling comprises a first sling arm 5 and a second sling arm 6;

[0039] The first suspension arm 5 and the second suspension arm 6 are arranged on the hand-adjustable connecting member 4 in a relative manner, and the first suspension arm 5 and the second suspension arm 6 are both provided with the second connecting portion 3;

[0040] When the manually adjustable connecting member 4 moves, the first suspension arm 5 and the second suspension arm 6 respectively enter and exit the gaps on both sides of the target converter valve submodule.

[0041] From the above description, it can be seen that the lifting device part is composed of a first lifting arm 5 and a second lifting arm 6 which are arranged opposite to each other, and the two are respectively connected to two sides of the target converter valve submodule, so as to smoothly lift the target converter valve submodule.

[0042] Further, the first suspension arm 5 and the second suspension arm 6 are both triangular;

[0043] The second connecting portion 3 is provided on the bottom corners of the first suspension arm 5 and the second suspension arm 6 .

[0044] From the above description, it can be seen that the first boom 5 and the second boom 6 are both stable triangular structures, and a second connecting portion 3 is provided at the bottom corners to improve the stability of the lifting connection and ensure the reliable operation of the tooling.

[0045] Furthermore, the sling also includes a capacitor sling 7;

[0046] The hand-adjustable connecting member 4 is connected to the capacitor suspension rod 7 , and the capacitor suspension rod 7 is connected to the first suspension arm 5 and the second suspension arm 6 at the same time.

[0047] From the above description, it can be seen that a capacitor suspension rod 7 is provided; the capacitor suspension rod 7 is staggered to form a "Z"-shaped pad block, which is used to overlap two lifting points of the target converter valve submodule capacitor. Positioning bolts and nuts are respectively locked at both ends of the "Z"-shaped bracket. The head end is supported by the nut for bearing the weight of the control unit at the front of the target converter valve submodule. The bolt plays a positioning role and bears the lateral cutting force of the swing of the target converter valve submodule during the lifting process; the tail end is supported by the pad block for bearing the weight of the capacitor at the rear of the target converter valve submodule (the capacitor of the target converter valve submodule has the largest weight), and is positioned by bolts and bears the lateral cutting force of the swing of the submodule during the lifting process. The double-bolt positioning structure ensures the smooth start-up of the target converter valve submodule, and the pad block structure design improves the bearing capacity of the suspension rod.

[0048] Furthermore, the sling can be horizontally rotated relative to the hand-adjustable connecting member 4.

[0049] From the above description, it can be seen that the hoist can rotate horizontally relative to the manually adjustable connector 4, so that after the target converter valve submodule is moved out of the interlayer frame of the valve tower, the target converter valve submodule can be driven to rotate and the orientation of the target converter valve submodule can be adjusted for easy transportation.

[0050] Furthermore, it also includes an auxiliary support member 8 for detachably fixing to an edge position of the interlayer frame adjacent to the target converter valve submodule;

[0051] The auxiliary support member 8 corresponds to the support beam assembly 1 up and down.

[0052] From the above description, it can be seen that an auxiliary support member 8 is provided. After the target converter valve submodule is partially moved out of the interlayer frame of the valve tower, the target converter valve submodule can be supported by the auxiliary support member 8, so that the operator can conduct a preliminary inspection of the target converter valve submodule or directly handle some minor faults on the tower.

[0053] Furthermore, the auxiliary support member 8 is provided with an avoidance groove 9;

[0054] The avoidance groove 9 is adapted to the bottom of the target converter valve submodule.

[0055] It can be seen from the above description that the avoidance groove 9 is provided to make the removal process of the target converter valve submodule more convenient and labor-saving.

[0056] Furthermore, a slide rail is provided at the bottom of the support beam assembly 1;

[0057] The lifting assembly is provided with a movable roller 10, and the movable roller 10 is movably arranged in the slide rail.

[0058] From the above description, it can be seen that in the moving part, the slide rail and the moving roller 10 are arranged to cooperate with each other, so that even if the lifting device carries the target converter valve submodule,

[0059] Please refer to Figure 7 A tower submodule bypass switch disassembly and replacement method is applied to the above-mentioned tower submodule bypass switch disassembly and replacement tool, comprising the following steps:

[0060] S1. Install the support beam assembly 1 on the interlayer frame of the valve tower at a position corresponding to the position above the target converter valve submodule;

[0061] S2, installing the lifting assembly on the support beam assembly 1, controlling the lifting assembly to move below the support beam assembly 1 and enter the gap between the target converter valve submodule and the adjacent converter valve submodule;

[0062] S3, releasing the external wiring of the target converter valve submodule, and connecting the lifting assembly and the target converter valve submodule;

[0063] S4, controlling the lifting assembly to rise and move again, and moving the target converter valve submodule out of the interlayer frame of the valve tower.

[0064] From the above description, it can be seen that the beneficial effects of the present invention are: by adopting an external mounting structure that is easy to carry, when the target converter valve submodule needs to be repaired, first install the support beam assembly 1 above the target converter valve submodule, and then install the lifting assembly, and move the lifting assembly through the gap between the target converter valve submodule and the adjacent converter valve submodule, and then slightly lift the target converter valve submodule through the lifting assembly, and move the target converter valve submodule out with the help of the lifting assembly, thereby reducing the manpower loss and operation time required for the replacement operation of the submodule bypass switch on the tower, overcoming the difficulties of small gaps between the submodule and the interlayer frame and between the submodules, improving the operation efficiency of submodule maintenance and replacement, and reducing safety risks.

[0065] Please refer to Figures 1 to 6 , Embodiment 1 of the present invention is:

[0066] A tool for disassembling and replacing a submodule bypass switch on a tower, comprising a support beam assembly 1 and a lifting assembly; the lifting assembly is movably arranged at the bottom of the support beam assembly 1, a first connecting portion 2 is provided on the support beam assembly 1, and the lifting assembly is provided with a second connecting portion 3 for detachably connecting a target converter valve submodule; the support beam assembly 1 is detachably fixed to a position above the target converter valve submodule on the interlayer frame of the valve tower via the first connecting portion 2; when moving at the bottom of the support beam assembly 1, the lifting assembly can enter and exit the gap between the target converter valve submodule and an adjacent converter valve submodule.

[0067] In this embodiment, the first connection part 2 can be optionally composed of a mounting plate 21 and a plurality of bolt connectors 22 arranged on the mounting plate 21; at the same time, the number of the first connection parts 2 is at least two; the operator holds a handheld tool to connect and tighten the bolt connector 22 to the corresponding mounting point on the interlayer frame of the valve tower to complete the fixation of the support beam assembly 1. The main body of the support beam assembly 1 is a channel steel beam 11, a slide rail is arranged at the bottom thereof, and sliding limit members are arranged at both ends of the slide rail, and a moving roller 10 is arranged on the lifting assembly, and the moving roller 10 is movably arranged in the slide rail; after the assembly is completed, the slide rail needs to cooperate with the moving roller 10 and the sling and slide with a load, and the moving roller 10 needs to slide smoothly with a load, and no jamming is allowed.

[0068] In this embodiment, if Figure 3 As shown, the lifting assembly includes a hand-adjustable connector 4 and a sling; the upper end of the hand-adjustable connector 4 is movably arranged at the bottom of the support beam assembly 1, and the lower end of the hand-adjustable connector 4 is connected to the sling; the hand-adjustable connector 4 is used to control the lifting of the sling. The hand-adjustable connector 4 is composed of a basket bolt 41, a screw rod 42, etc., and the extension and retraction action is achieved by moving the basket bolt 41 body, and the lifting and lowering are completed accordingly.

[0069] In this embodiment, combined with Figure 4 and Figure 5 As shown, the sling includes a first arm 5 and a second arm 6; the first arm 5 and the second arm 6 are relatively arranged on the capacitor suspension rod 7, and the first arm 5 and the second arm 6 are both provided with a second connecting portion 3; when the hand-adjustable connecting member 4 moves, the first arm 5 and the second arm 6 respectively enter and exit the gap on both sides of the target converter valve submodule. The first arm 5 and the second arm 6 are both triangular; the first arm 5 and the second arm 6 are both provided with a second connecting portion 3 at the bottom corners. The hand-adjustable connecting member 4 is connected to the capacitor suspension rod 7. The sling can rotate horizontally relative to the hand-adjustable connecting member 4. The first arm 5 and the second arm 6 are required to have a smooth surface, no burrs, sharp corners, and blunt edges after processing; the load-bearing Kg is not broken; the surface is coated with gray paint for anti-corrosion treatment or environmentally friendly galvanizing. The second connecting portion 3 is preferably connected by bolt locking, and the operator uses a hand-held tool to perform the connection operation.

[0070] In this embodiment, if Figure 6 As shown, the tooling also includes an auxiliary support member 8 for detachably fixing to the edge position of the interlayer frame adjacent to the target converter valve submodule; the auxiliary support member 8 corresponds to the support beam assembly 1 up and down. The auxiliary support member can be selected as a channel steel, which is fixed to the interlayer frame by bolts and is located in the direction in which the target converter valve submodule is moved by the lifting assembly; when the target converter valve submodule is partially removed from the interlayer frame, the auxiliary support member 8 and the lifting device jointly support the target converter valve submodule. The auxiliary support member 8 is provided with an avoidance groove 9; the avoidance groove 9 is adapted to the bottom of the target converter valve submodule.

[0071] Please refer to Figure 7 , Embodiment 2 of the present invention is:

[0072] A method for disassembling and replacing a tower submodule bypass switch, applied to a tower submodule bypass switch disassembly and replacement tool in Embodiment 1, comprises the following steps:

[0073] S1. Install the support beam assembly 1 on the interlayer frame of the valve tower at a position corresponding to the position above the target converter valve submodule;

[0074] Prior to this, the operator first takes a lifting vehicle to transport the tooling to the position on the valve tower corresponding to the target converter valve submodule, and then installs the auxiliary support member 8 in front of the interlayer frame of the corresponding layer.

[0075] S2, installing the lifting assembly onto the support beam assembly 1, controlling the lifting assembly to move below the support beam assembly 1 and enter the gap between the target converter valve submodule and the adjacent converter valve submodule;

[0076] Among them, the manually adjustable connector 4 is installed first, and then the capacitor suspension rod 7 is installed; finally, the first suspension arm 5 and the second suspension arm 6 are installed. During installation, it is confirmed that the first suspension arm 5 and the second suspension arm 6 respectively correspond to the gaps on both sides of the target converter valve submodule (if the target converter valve submodule is at the edge position in a row of converter valve submodules, there is only one).

[0077] S3, disconnecting the external wiring of the target converter valve submodule, and connecting the lifting assembly and the target converter valve submodule;

[0078] In this embodiment, the operator holds an auxiliary installation tool, such as a wrench, and extends his hand into the gap beside the target converter valve submodule. If the gap is not wide enough, the target converter valve submodule can be appropriately moved to increase the gap and perform the operation again, so that the second connection portion 3 is connected to the preset installation point on the side of the target converter valve submodule;

[0079] S4. Control the lifting assembly to rise and move again to move the target converter valve submodule out of the interlayer frame of the valve tower.

[0080] At this time, the operator adjusts the manually adjustable connector 4 so that the first lifting arm 5 and the second lifting arm 6 jointly lift the target converter valve submodule, and then controls the moving roller 10 to move and pulls the target converter valve submodule out from its original position. If a simple maintenance operation is to be performed, only a portion of the module needs to be pulled out, and the auxiliary support 8 and the interlayer frame jointly support the target converter valve submodule, and then the operator can perform maintenance. If replacement is required, the entire target converter valve submodule needs to be completely pulled out, that is, the moving roller 10 moves a larger stroke, and then the target converter valve submodule is driven to rotate by rotating the hoist so that it corresponds to the empty space reserved on the lifting platform, and then the target converter valve submodule is lowered to the lifting platform, while the tooling is temporarily left on the interlayer frame. After the new converter valve submodule is transported up, the tooling is reused to install the new converter valve submodule into the interlayer frame.

[0081] In summary, the present invention provides a tool and method for disassembling and replacing a tower submodule bypass switch, which adopts an external mounting structure that is easy to carry. When the target converter valve submodule needs to be repaired, the support beam assembly is first installed above the target converter valve submodule, and then the lifting assembly is installed. The lifting assembly is moved through the gap between the target converter valve submodule and the adjacent converter valve submodule, and then the target converter valve submodule is slightly lifted by the lifting assembly. The target converter valve submodule is moved out with the help of the lifting assembly, thereby reducing the manpower loss and operation time required for the tower submodule bypass switch replacement operation, overcoming the difficulty of small gaps between the submodule and the interlayer frame and between the submodules, improving the operation efficiency of submodule maintenance and replacement, and reducing safety risks.

[0082] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A tool for disassembling and replacing a submodule bypass switch on a tower, characterized in that: Includes a support beam assembly and a lifting assembly; The lifting assembly is movably arranged at the bottom of the support beam assembly, the support beam assembly is provided with a first connection portion, and the lifting assembly is provided with a second connection portion for detachably connecting the target converter valve submodule; The support beam assembly is detachably fixed to a position above the target converter valve submodule on the interlayer frame of the valve tower through the first connecting portion; When the bottom of the support beam assembly moves, the lifting assembly can enter and exit the gap between the target converter valve submodule and the adjacent converter valve submodule.

2. The tooling for disassembling and replacing a tower submodule bypass switch according to claim 1 is characterized in that: The lifting assembly includes a hand-adjustable connector and a lifting device; The upper end of the hand-adjustable connecting member is movably arranged at the bottom of the support beam assembly, and the lower end of the hand-adjustable connecting member is connected to the sling; The manually adjustable connecting piece is used to control the lifting and lowering of the sling.

3. The tooling for disassembling and replacing a tower submodule bypass switch according to claim 2 is characterized in that: The sling comprises a first sling arm and a second sling arm; The first suspension arm and the second suspension arm are arranged on the hand-adjustable connecting member in a relative manner, and the second connecting part is provided on both the first suspension arm and the second suspension arm; When the manually adjustable connecting member moves, the first suspension arm and the second suspension arm respectively enter and exit the gap on both sides of the target converter valve submodule.

4. The tooling for disassembling and replacing a tower submodule bypass switch according to claim 3 is characterized in that: The first suspension arm and the second suspension arm are both triangular; The second connecting portion is provided on the bottom corners of the first suspension arm and the second suspension arm.

5. The tooling for disassembling and replacing a tower submodule bypass switch according to claim 3 is characterized in that: The sling also includes a capacitor sling; The hand-adjustable connecting piece is connected to the capacitor suspension rod, and the capacitor suspension rod is simultaneously connected to the first suspension arm and the second suspension arm.

6. The tooling for disassembling and replacing a tower submodule bypass switch according to claim 2, characterized in that: The sling can rotate horizontally relative to the hand-adjustable connecting piece.

7. The tooling for disassembling and replacing a tower submodule bypass switch according to claim 1, characterized in that: It also includes an auxiliary support member for detachably fixing to an edge position of the interlayer frame adjacent to the target converter valve submodule; The auxiliary support member corresponds to the support beam assembly up and down.

8. The tooling for disassembling and replacing a tower submodule bypass switch according to claim 7 is characterized in that: The auxiliary support member is provided with an avoidance groove; The avoidance groove is adapted to the bottom of the target converter valve submodule.

9. The tooling for disassembling and replacing a tower submodule bypass switch according to claim 1, characterized in that: A slide rail is provided at the bottom of the support beam assembly; The lifting assembly is provided with a movable roller, and the movable roller is movably arranged in the slide rail.

10. A method for disassembling and replacing a submodule bypass switch on a tower, applied to a tool for disassembling and replacing a submodule bypass switch on a tower as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1. Install the support beam assembly on the interlayer frame of the valve tower at a position corresponding to the position above the target converter valve submodule; S2, installing the lifting assembly onto the support beam assembly, controlling the lifting assembly to move below the support beam assembly and enter the gap between the target converter valve submodule and the adjacent converter valve submodule; S3, releasing the external wiring of the target converter valve submodule, and connecting the lifting assembly and the target converter valve submodule; S4, controlling the lifting assembly to rise and move again, and moving the target converter valve submodule out of the interlayer frame of the valve tower.

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