A high-voltage power capacitor hoisting device

Abstract

The utility model discloses a high -voltage power capacitor hoist device, including hoisting beam and hoisting subassembly, hoisting beam one end bottom is equipped with the lower hook, and the locking groove opposite hoisting beam in the lower hook, is equipped with the locking block above locking groove, and locking block swing joint has along the locking screw rod of vertical penetration hoisting beam, and locking screw rod and hoisting beam are thread adaptation, and hoisting subassembly includes chain hoist module, and chain hoist module upper end is connected with the sliding block of hoisting beam sliding fit, and the sliding block is screwed with the adjusting screw rod of along hoisting beam length direction arrangement, and the hoist device of the utility model forms multiple fixed through hoisting beam, lower hook and locking screw rod, ensures that hoisting beam is completely fixed in high altitude, and there is no displacement or loose risk, and chain hoist module provides stable vertical lifting force, avoids capacitor slide and personnel fall and so on safety hidden danger, improves overhaul efficiency greatly simultaneously, reduces the time length of the loss of reactive power compensation ability of converter station, provides special, reliable auxiliary tool for converter station capacitor maintenance.

Description

Technical Field

[0001] This utility model relates to the field of power equipment hoisting technology, specifically to a high-voltage power capacitor hoisting device. Background Technology

[0002] In high-voltage direct current (HVDC) transmission systems, converter stations are the core hubs for AC-DC power conversion. Converter valves consume significant reactive power during operation, requiring multiple AC filters and parallel capacitor banks to balance this reactive power locally. Therefore, capacitors, as fundamental components, are numerous and widely distributed within converter stations. Due to the complex operating environment of converter stations, capacitors operate under high voltage and high current conditions for extended periods, making them prone to faults such as oil leakage, capacitance drift, and overheating at connections. Failure to replace faulty capacitors promptly will lead to decreased filtering efficiency, system reactive power imbalance, and even cascading equipment failures. Therefore, power-off replacement of faulty capacitors is a critical aspect of routine maintenance at converter stations.

[0003] Currently, capacitor replacement work still relies on purely manual handling. This method, limited by the installation environment and inherent characteristics of capacitors, suffers from the following technical drawbacks: Capacitors are often installed in tower-like, layered configurations, typically 3-5 meters above the ground, with limited internal space within the mounting frame. Furthermore, a single high-voltage power capacitor can weigh up to 80 kilograms, making manual handling difficult due to space constraints, resulting in longer replacement times and significantly impacting maintenance efficiency. This is especially problematic when multiple capacitors fail simultaneously, potentially leading to prolonged insufficient reactive power compensation at the converter station. Additionally, during high-altitude work, personnel must climb and lift capacitors within the narrow mounting frame without dedicated safety measures, increasing the risk of falls due to exhaustion or loss of balance. Moreover, the lack of a stable load-bearing structure during manual handling allows capacitors to easily slip from hands, potentially damaging the capacitor casing, internal components, and even injuring equipment or personnel below, posing a significant safety risk to on-site maintenance operations. Utility Model Content

[0004] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a high-voltage power capacitor hoisting device, which significantly improves work efficiency, safety protection, ease of operation and structural stability.

[0005] The technical solution adopted by this utility model is as follows: a high-voltage power capacitor hoisting device, including a hoisting beam and a hoisting assembly; a lower hook is provided at the bottom of one end of the hoisting beam, and a locking groove is provided in the lower hook opposite to the hoisting beam. A locking block is provided above the locking groove. A locking screw that runs vertically through the hoisting beam is movably connected to the locking block. The locking screw is threadedly adapted to the hoisting beam. Rotating the locking screw can move the locking block closer to or away from the locking groove; the hoisting assembly includes a hand chain hoist module. A slider that slides with the hoisting beam is connected to the upper end of the hand chain hoist module. An adjusting screw that runs along the length of the hoisting beam is screwed onto the slider. Rotating the adjusting screw can move the hand chain hoist module along the length of the hoisting beam.

[0006] The hoisting device provided in this technical solution can be used for the installation and dismantling of power capacitors. During use, the hoisting beam is placed on the load-bearing channel steel for installing the capacitor, and the load-bearing channel steel is engaged in the locking groove of the lower hook. Rotating the locking screw presses the locking block against the load-bearing channel steel, ensuring the hoisting beam remains stable throughout the hoisting process. The position of the hand-operated hoist module is adjusted by rotating the adjusting screw, ensuring the power capacitor is in a suitable position during hoisting. This facilitates the removal and lowering of the power capacitor to the ground, or the hoisting of the ground capacitor to the installation position for installation. Using the hand-operated hoist module further improves hoisting efficiency and enables efficient capacitor maintenance, thereby solving the problem of low replacement efficiency for high-voltage power capacitors and reducing the safety risks of falling capacitors during on-site maintenance.

[0007] Preferably, the upper end of the locking screw is connected to a first rotating handle.

[0008] Preferably, the lifting beam is provided with mounting seats at both ends of the adjusting screw that are rotatably engaged with the adjusting screw, and a second rotating handle connected to the adjusting screw is provided at the end of the lifting beam away from the lower hook.

[0009] Preferably, the bottom of the hoisting beam is provided with a sliding groove arranged along its length, and the sliding groove is in sliding engagement with the slider.

[0010] Preferably, the end face of the hoisting beam with the lower hook is provided with a reinforcing beam that is fixed to the lower hook.

[0011] Preferably, the top of the hoisting beam is provided with a hoisting handle.

[0012] Preferably, the longitudinal section of the hoisting beam has an H-shaped structure.

[0013] The beneficial effects of this utility model are as follows: The hoisting device provided by this utility model forms multiple fixation through the hoisting beam, lower hook and locking screw, ensuring that the hoisting beam is completely fixed at high altitude without the risk of displacement or loosening; the hand chain hoist module provides stable vertical lifting force, replacing manual lifting, completely avoiding safety hazards such as capacitor slippage and personnel falling, while greatly improving maintenance efficiency, reducing the duration of reactive power compensation capacity loss in converter stations, and providing a dedicated and reliable auxiliary tool for capacitor maintenance in converter stations, which has high practical value. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is a perspective view of the high-voltage power capacitor hoisting device provided in the embodiments of this utility model.

[0016] Figure 2 This is a cross-sectional view of the high-voltage power capacitor hoisting device provided in the embodiments of this utility model.

[0017] Reference numerals in the attached drawings: Lifting beam 100, slide rail 110, reinforcing beam 120, lifting handle 130, lower hook 200, locking groove 210, locking block 300, locking screw 400, hand chain hoist module 500, slider 600, adjusting screw 700, first rotating handle 800, mounting base 900, second rotating handle 1000, load-bearing channel steel 1100. Detailed Implementation

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0019] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0020] like Figure 1 and Figure 2As shown in the figure, a specific embodiment of this utility model provides a high-voltage power capacitor hoisting device. This device is used to efficiently and safely hoist power capacitors during power grid maintenance. Specifically, it includes a hoisting beam 100 and a hoisting assembly. One end of the hoisting beam 100 has a lower hook 200 at its bottom. The lower hook 200 has a locking groove 210 opposite to the hoisting beam 100. A locking block 300 is provided above the locking groove 210. The locking block 300 is movably connected to a locking screw 40 that vertically penetrates the hoisting beam 100. 0. The locking screw 400 is threadedly adapted to the lifting beam 100. Rotating the locking screw 400 can move the locking block 300 closer to or further away from the locking groove 210. The lifting assembly includes a hand chain hoist module 500. The upper end of the hand chain hoist module 500 is connected to a slider 600 that slides with the lifting beam 100. An adjusting screw 700 is screwed onto the slider 600 and arranged along the length of the lifting beam 100. Rotating the adjusting screw 700 can move the hand chain hoist module 500 along the length of the lifting beam 100.

[0021] like Figure 1 and Figure 2 As shown, with the above-mentioned setup, the hoisting device provided in this embodiment can be used for the installation and dismantling of power capacitors. During use, the hoisting beam 100 is placed on the load-bearing channel steel for installing the capacitor, and the load-bearing channel steel is engaged in the locking groove 210 of the lower hook 200. By rotating the locking screw, the locking block 300 presses against the load-bearing channel steel to ensure that the hoisting beam 100 remains stable throughout the hoisting process. The position of the hand-operated hoist module 500 is adjusted by rotating the adjusting screw 700, so that the power capacitor is in a suitable position during hoisting, facilitating the dismantling and lowering of the power capacitor to the ground or the hoisting of the ground capacitor to the installation position for installation. Compared to manual lifting, the hand-operated hoist module 500 achieves labor-saving lifting through chain transmission, allowing for operation by a single person. In practice, the applicant has reduced the single operation time of capacitor dismantling and lowering - ground transfer - new component hoisting from the traditional 2 hours to less than 30 minutes, significantly improving maintenance efficiency, reducing the duration of reactive power compensation failure in the converter station, and also reducing the safety risk of falling during on-site maintenance operations.

[0022] As mentioned above, both the locking screw 400 and the adjusting screw 700 need to be rotated to perform locking adjustment or position adjustment of the hand chain hoist module 500. In this embodiment, a first rotating handle 800 is connected to the upper end of the locking screw 400. The first rotating handle 800 can be used to quickly adjust the locking block 300 so that the locking block 300 is away from or close to the locking groove 210. In this embodiment, the surface of the locking block 300 opposite to the locking groove 210 is provided with spaced pads. The locking screw 400 drives the locking block 300 to press against the channel steel. The pads increase the friction force to ensure that the hoisting beam 100 is completely fixed at high altitude without the risk of displacement or loosening. At the same time, in this embodiment, mounting seats 900 that rotate with the adjusting screw 700 are provided at both ends of the hoisting beam 100 corresponding to the adjusting screw 700. A second rotating handle 1000 connected to the adjusting screw 700 is provided at the end of the hoisting beam 100 away from the lower hook 200. The second rotating handle 1000 can rotate the adjusting screw 700 to make the slider 600 slide along the lifting beam 100, thereby realizing the position adjustment of the hand chain hoist module 500.

[0023] like Figure 1 and Figure 2 As shown, in this embodiment, a sliding groove 110 is provided at the bottom of the hoisting beam 100 along its length, and the sliding groove 110 is slidably engaged with the slider 600. In this way, the slider 600 can slide stably along the sliding groove 110 when the adjusting screw 700 rotates, thereby improving the stability of the position adjustment of the hand chain hoist module 500.

[0024] like Figure 1 and Figure 2 As shown, since the bottom of the lifting beam 100 needs to be fixed to the lower hook 200, the stability of the lifting beam 100 is ensured during use by fixing it with the lower hook 200. To ensure the structural strength of the installation position, this embodiment has a reinforcing beam 120 fixed to the lower hook 200 on the end face of the lifting beam 100 at the end where the lower hook 200 is located. The reinforcing beam 120 can ensure the strength of the connection between the lower hook 200 and the lifting beam 100, and prevent the lifting beam 100 from breaking due to load when lifting the power capacitor.

[0025] like Figure 1 and Figure 2 As shown, before use, this device needs to be lifted onto the load-bearing channel steel of the power capacitor. In this embodiment, a lifting handle 130 is provided at the top of the lifting beam 100, which facilitates the lifting of the entire device. In practical applications, the longitudinal section of the lifting beam 100 has an H-shaped structure, utilizing the mechanical properties of H-shaped steel to achieve high-strength load-bearing capacity, and can stably support the weight of a capacitor of 80-100 kg. A reinforcing beam 120 is added to the connection end between the lower hook 200 and the lifting beam 100 to prevent structural breakage due to excessive local stress during lifting, further ensuring the load-bearing safety of the device itself.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A high-voltage power capacitor hoisting device, characterized in that; Includes lifting beam (100) and lifting components; The bottom of one end of the hoisting beam (100) is provided with a lower hook (200), and the lower hook (200) has a locking groove (210) opposite to the hoisting beam (100). A locking block (300) is provided above the locking groove (210). The locking block (300) is movably connected to a locking screw (400) that runs vertically through the hoisting beam (100). The locking screw (400) is threadedly matched with the hoisting beam (100). Rotating the locking screw (400) can make the locking block (300) move closer to or away from the locking groove (210). The hoisting assembly includes a hand chain hoist module (500), with a slider (600) connected to the upper end of the hand chain hoist module (500) and slidingly engaging with the hoisting beam (100). An adjusting screw (700) is screwed onto the slider (600) and arranged along the length of the hoisting beam (100). Rotating the adjusting screw (700) allows the hand chain hoist module (500) to move along the length of the hoisting beam (100).

2. The high-voltage power capacitor hoisting device according to claim 1, characterized in that; The upper end of the locking screw (400) is connected to a first rotating handle (800).

3. The high-voltage power capacitor hoisting device according to claim 1, characterized in that; The hoisting beam (100) is provided with mounting seats (900) at both ends of the adjusting screw (700) that are rotatably engaged with the adjusting screw (700). The hoisting beam (100) is provided with a second rotating handle (1000) at the end away from the lower hook (200) that is connected to the adjusting screw (700).

4. The high-voltage power capacitor hoisting device according to claim 1, characterized in that; The bottom of the hoisting beam (100) is provided with a sliding groove (110) arranged along its length, and the sliding groove (110) is in sliding engagement with the slider (600).

5. The high-voltage power capacitor hoisting device according to claim 1, characterized in that; The hoisting beam (100) is provided with a lower hook (200) and a reinforcing beam (120) is provided on one end face of the lower hook (200) for fixing.

6. The high-voltage power capacitor hoisting device according to claim 1, characterized in that; The top of the hoisting beam (100) is equipped with a hoisting handle (130).

7. The high-voltage power capacitor hoisting device according to claim 1, characterized in that; The longitudinal section of the hoisting beam (100) has an H-shaped structure.

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