Valve arrester replacing device for converter valve

Abstract

The utility model relates to the field of power grid valve lightning arrester replacement, in particular to a valve lightning arrester replacement device for a converter valve. Comprising a lifting belt and camber beam assemblies arranged at the two ends of the lifting belt, and one camber beam assembly is connected with a lifting beam; the lifting beam is provided with a trolley which is arranged along the lifting beam in a sliding manner, the trolley is provided with a lifting bolt for lifting the valve lightning arrester, and the displacement change of the valve lightning arrester is realized through the trolley and the lifting bolt, so that the replacement of the valve lightning arrester is realized. According to the utility model, the installation process is simplified, the operation is simpler, more convenient and faster, the possibility of directly carrying out a performance test on the valve arrester on the device can be reduced, the working efficiency is greatly improved, and the working time required by unnecessary disassembly and assembly work is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of grid valve lightning arrester replacement, in particular to a valve lightning arrester replacement device for converter valve. BACKGROUND

[0002] With the continuous leap of high-voltage direct current transmission technology, the continuous improvement of voltage grade and current capacity not only promotes the substantial growth of power transmission efficiency, but also puts forward more stringent requirements for the reliability of the key component of the power transmission system - the converter valve. As the core equipment in the direct current transmission system, the stable operation of the converter valve is directly related to the safety and efficiency of the entire power transmission network. Under this background, the performance reliability and stability of the valve lightning arrester, which is an important defense line to protect the converter valve from over-voltage impact, are particularly important.

[0003] However, due to the long-term effect of high voltage and large current, combined with the erosion of environmental factors, the performance of the valve lightning arrester will inevitably degrade or even be damaged. In order to ensure the continuous and efficient operation of the converter valve system, it is necessary to test the valve lightning arrester during the annual maintenance of the converter valve to verify whether the performance of the valve lightning arrester meets the needs, so as to timely discover and solve potential safety hazards.

[0004] During the test of the valve lightning arrester, the valve lightning arrester in the converter valve tower is usually arranged in a series structure (two or four valve lightning arresters are provided for each valve tower). Once a specific valve lightning arrester needs to be tested, a strict disassembly process must be followed. For example, if the upper valve lightning arrester needs to be verified due to failure, each layer of valve lightning arrester and its related connecting components from the bottom to the top need to be removed in sequence to create enough space and ensure insulation safety during the test. The entire process not only has a large amount of work and high technical difficulty, but also takes a very long time. SUMMARY

[0005] The utility model discloses a valve lightning arrester replacement device for converter valve, which is suitable for valve lightning arrester series structure, simple and convenient to install, and can perform valve lightning arrester test on the device, greatly improving work efficiency. Compared with the conventional scheme, when the valve lightning arrester is disassembled and reassembled, fewer components need to be disassembled and reassembled, avoiding installation quality problems that may exist during reassembly.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The utility model discloses a valve lightning arrester replacement device for converter valve, which comprises a sling and a bent beam assembly provided at both ends of the sling, wherein one of the bent beam assemblies is connected with a hoisting beam; a trolley is arranged on the hoisting beam and slides along the hoisting beam; a hoisting bolt for lifting the valve lightning arrester is arranged on the trolley; the displacement of the valve lightning arrester is realized by the trolley and the hoisting bolt, thereby realizing the replacement of the valve lightning arrester.

[0008] As a further improvement, the bent beam assembly comprises a bent beam and a pressing plate detachably connected with the bent beam.

[0009] As a further improvement, the bent beam assembly is provided with a lifting ring screw at each end, and a shackle for a lifting belt to pass through is arranged on the lifting ring screw.

[0010] As a further improvement, the trolley is connected with the lifting beam through a transmission shaft, wherein a bearing is further arranged on the transmission shaft, and a roller is sleeved on the bearing.

[0011] As a further improvement, the lifting beam is connected with the bent beam through a fastener.

[0012] As a further improvement, a plurality of reinforcing plates are further arranged on the lifting beam.

[0013] As a further improvement, a lifting cable is arranged on the lifting beam away from one end of the bent beam assembly.

[0014] As a further improvement, a limiting device is further arranged on the lifting beam.

[0015] As a further improvement, the lifting belt is a ring-shaped lifting belt.

[0016] As a further improvement, the bent beam assembly at the bottom is further provided with a positioning plug.

[0017] Compared with the prior art, the following technical effects are achieved:

[0018] The utility model is suitable for series structure valve lightning arrester, through this device not only simplifies installation process, makes operation more simple and convenient, and has the ability of directly carrying out insulation test to valve lightning arrester on the device, greatly improves work efficiency, reduces the work time needed for unnecessary dismounting work, when needing to replace or test valve lightning arrester, this device does not need traditional method, removes all valve lightning arresters and related parts suspended below target valve lightning arrester from bottom to top layer by layer, thereby greatly reduces dismounting workload, not only saves time, but also reduces operation complexity, reduces the labor intensity of overhaul personnel.

[0019] In addition, since the device reduces the dismounting steps, it also reduces the installation quality problems that may be caused by multiple dismounting, such as loose connection, wear of parts, missing and misplacement, etc., so that the device not only improves work efficiency, but also significantly enhances the overall stability and reliability of the converter valve system. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic view of the utility model valve lightning arrester replacement device for converter valve;

[0021] Figure 2Another schematic view of the valve lightning arrester replacement device for converter valve is provided in the utility model.

[0022] The drawings show that the utility model provides a valve lightning arrester replacement device for converter valve, including sling 10 and being located in the two end curved beam assembly of sling 10, wherein one curved beam assembly is connected with hoisting beam 3;The hoisting beam 3 is equipped with the trolley 4 of sliding arrangement along hoisting beam 3, and the trolley 4 is equipped with the lifting bolt 11 for the lifting of valve lightning arrester, and the displacement change of valve lightning arrester is realized through trolley 4 and lifting bolt 11, so as to realize the replacement of valve lightning arrester. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0024] Embodiment 1

[0025] The embodiments of the utility model are described in detail below in combination with the drawings.

[0026] Figure 1 The drawings show that the utility model provides a valve lightning arrester replacement device for converter valve, including sling 10 and being located in the two end curved beam assembly of sling 10, wherein one curved beam assembly is connected with hoisting beam 3;The hoisting beam 3 is equipped with the trolley 4 of sliding arrangement along hoisting beam 3, and the trolley 4 is equipped with the lifting bolt 11 for the lifting of valve lightning arrester, and the displacement change of valve lightning arrester is realized through trolley 4 and lifting bolt 11, so as to realize the replacement of valve lightning arrester.

[0027] In the embodiment, the device is installed at the two ends of the valve lightning arrester to be replaced, and is used to bear the tension instead of the valve lightning arrester to be replaced, wherein the trolley 4 can drive the valve lightning arrester to slide in the horizontal direction, and the lifting bolt 11 connected with the trolley 4 drives the valve lightning arrester to lift to realize the movement in the vertical direction.

[0028] The curved beam assembly includes curved beam 1 and pressing plate 2 detachably connected with curved beam 1. In the embodiment, the curved beam 1 and the pressing plate 2 are two pairs, and one pair of curved beam 1 and pressing plate 2 can form one curved beam assembly, and the pressing plate 2 is installed on the curved beam 1 through screws, one curved beam assembly is used to be arranged above the fixing seat on the top of the valve lightning arrester, and the other curved beam assembly is arranged below the fixing seat at the bottom of the valve lightning arrester;In the embodiment, the curved beam 1 and the pressing plate 2 adopt quick mounting design, and the positioning is convenient, the screws are convenient to install, and the working efficiency is improved.

[0029] The curved beam assembly is provided with lifting ring screw 13 at the two ends, and the lifting ring screw 13 is provided with unloading buckle 12 for the sling 10 to pass through. Figure 1As shown, two loop-shaped lifting belts 10 are provided in the embodiment, and a buckle 12 is connected to the top and bottom of each loop-shaped lifting belt 10, respectively. The buckle 12 is connected to a lifting ring screw 13 provided on the bent beam 1 assembly. The lifting ring screw 13 passes through a through hole provided on the bent beam 1 assembly, thereby achieving the connection between the lifting belt 10 and the bent beam assembly. In the embodiment, the length of the lifting belt 10 can be adjusted, and the adjustment can be made according to the height of the valve lightning arrester.

[0030] The trolley 4 is connected to the lifting beam 3 through a transmission shaft 7, and a bearing 6 and a roller 5 sleeved on the bearing 6 are further provided on the transmission shaft 7. Figure 1 As shown, the trolley 4 is designed to be eccentric in the embodiment, which can avoid the lifting point of the valve lightning arrester. Two transmission shafts 7 are installed on the trolley 4 in the embodiment, and a bearing 6 is provided at each end of each transmission shaft 7 to reduce labor intensity. A roller 5 is sleeved on the bearing 6 to realize the movement of the trolley 4 on the lifting beam 3.

[0031] In the embodiment, the trolley 4 is provided with an opening at the bottom, and a lifting bolt 11 is provided at the opening. The lifting bolt 11 is used to connect the valve lightning arrester that needs to be replaced. By fastening the lifting bolt 11 and the lightning arrester, the lifting of the valve lightning arrester is realized. In actual use, different lengths of lifting bolts 11 are configured according to the specific use scene and actual demand to meet the needs of valve lightning arresters of different sizes. The lifting bolt 11 can also be replaced by a component with similar size adjustment function, such as a basket screw.

[0032] The lifting beam 3 is connected to the bent beam 1 through a fastener 14. In the embodiment, the fastener 14 is a bolt and a nut. The bolt passes through the bent beam 1 to connect the bent beam 1 and the lifting beam 3, and the nut is used for locking. The distance between the bent beam 1 and the lifting beam 3 can be adjusted by adjusting the nut to meet the needs of different sizes.

[0033] A plurality of reinforcing plates 8 are further provided on the lifting beam 3. The reinforcing plates 8 in the embodiment mainly increase the carrying capacity and deformation resistance of the lifting beam 3, thereby prolonging the service life of the lifting beam 3 and ensuring its safety. The specifications of the lifting beam 3 and the number of the reinforcing plates 8 can be adjusted according to the weight of the valve lightning arrester. In addition, the size and shape of the reinforcing plate 8 are adapted to the cross-sectional size and shape of the lifting beam 3 to ensure that the reinforcing plate 8 can be closely fitted with the lifting beam 3.

[0034] A sling 9 is provided at the end of the lifting beam 3 away from the bent beam 1 assembly. The sling 9 is provided for connection with an electric hoist, so that the entire lifting beam 3 is horizontally arranged, thereby facilitating subsequent work.

[0035] The limit device is arranged on the hanging beam 3. The limit structure arranged in the embodiment is used to limit the moving range of the trolley 4 to avoid the trolley 4 from being pulled out of the hanging beam 3. When the trolley 4 moves along the hanging beam 3 and approaches the limit device, the limit device can prevent the trolley 4 from continuing to move, so as to stop the trolley.

[0036] When the device is used, for the valve arrester installed on the top and the middle, the device is installed at both ends of the valve arrester to be replaced, so that the valve arrester is installed between the two sets of bent beam assemblies at the upper and lower ends, the length of the lifting belt is changed by adjusting the lifting ring screw 13, so as to adjust the distance between the two sets of bent beam assemblies; the electric hoist is used to lift the hanging beam 3 through the lifting rope 9, so that the hanging beam 3 is kept horizontally arranged;

[0037] The lifting bolt 11 is connected with the top of the valve arrester to be replaced, so that the lifting point of the replaced valve arrester is not stressed, and the tension is borne by the device. At this time, the worker tightens the arrester lifting bolt 11 with a wrench, removes the connecting piece at the top of the valve arrester, and then continues to tighten the arrester lifting bolt 11 with a wrench and removes the connecting piece at the bottom of the valve arrester. After the connecting piece of the valve arrester is removed, the valve arrester is pushed, so that the valve arrester and the trolley 4 move along the hanging beam 3 to the other end of the hanging beam 3 for experiment.

[0038] If the insulation distance meets the required insulation distance of the valve arrester test, the valve arrester test can be carried out in the air. If the insulation distance does not meet the test requirement, the valve arrester is dropped to the ground by another electric hoist for test.

[0039] Embodiment 2

[0040] The embodiment is basically the same as embodiment 1, and the difference is that the embodiment is for the valve arrester installed at the lowermost position. Since the lower end of the device cannot be limited, as shown in the lower bent beam 1 assembly, a positioning plug 15 is fixed below the lower bent beam 1 assembly by a bolt. The positioning plug 15 cooperates with the lower end fixing seat of the valve arrester to limit the lower bent beam assembly, so that the valve arrester can be placed on the bent beam assembly. Figure 2

[0041] It should be noted that in the description of the present application, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0042] ​Any procedural or methodological descriptions in flow charts or otherwise described herein can be understood to represent modules, segments, or portions of code that include executable instructions for implementing the logic functions or procedures described, and the scope of preferred embodiments of the present application includes additional implementations in which the functions can be performed in an order different from that shown or discussed, including substantially simultaneously, or in reverse order, as will be understood by those having ordinary skill in the art to which embodiments of the present application pertain.

[0043] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner.

[0044] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be construed as limiting the present application, and those of ordinary skill in the art can make changes, modifications, replacements, and variations to the above-described embodiments within the scope of the present application.

Claims

1. A valve surge arrester replacement device for a converter valve, characterized by The utility model relates to a lifting device for valve lightning arrester, which comprises a lifting belt and a bent beam assembly arranged at both ends of the lifting belt, wherein one of the bent beam assemblies is connected with a lifting beam; a trolley is arranged on the lifting beam in a sliding mode; a lifting bolt for lifting the valve lightning arrester is arranged on the trolley; the displacement of the valve lightning arrester is realized through the trolley and the lifting bolt, thereby realizing the replacement of the valve lightning arrester.

2. The valve surge arrester replacement device for a converter valve according to claim 1, characterized by The bent beam assembly comprises a bent beam and a pressing plate detachably connected with the bent beam.

3. The valve surge arrester replacement device for a thyristor valve according to claim 2, characterized by The bent beam assembly is provided with a lifting ring screw at both ends, and the lifting ring screw is provided with a shackle for the lifting belt to pass through.

4. The valve surge arrester replacement device for a converter valve according to Claim 1, characterized by The trolley is connected with the lifting beam through a transmission shaft, and the transmission shaft is further provided with a bearing and a roller sleeved on the bearing.

5. The valve surge arrester replacement device for a converter valve according to any one of claims 1 or 2, characterized in that, The lifting beam is connected with the bent beam through a fastener.

6. The valve surge arrester replacement device for a thyristor valve according to claim 5, characterized by The lifting beam is further provided with a plurality of reinforcing plates.

7. The valve surge arrester replacement device for a thyristor valve according to claim 6, characterized in that The lifting beam is provided with a lifting cable at an end away from the bent beam assembly.

8. The valve surge arrester replacement device for a thyristor valve according to claim 7, characterized by The lifting beam is further provided with a limiting device.

9. The valve surge arrester replacement device for a thyristor valve according to claim 1, characterized by The lifting belt is a ring-shaped lifting belt.

10. The valve surge arrester replacement device for a thyristor valve according to claim 1, characterized by The bent beam assembly at the bottom is further provided with a positioning plug.

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