SVC (static var compensator) filtering device replacing and hoisting tool

Abstract

The utility model provides a replacing and hoisting tool for an SVC (static var compensator) filtering device. The replacing and hoisting tool comprises a supporting rod and a hoisting mechanism, mounting pieces are arranged at the bottoms of the supporting rods. The hoisting mechanism is arranged on one side of the supporting rod and is detachably and rotatably connected with the supporting rod around a vertical axis through a connecting piece; and a chain block is arranged on the hoisting mechanism. Wherein the hoisting mechanism comprises a supporting beam which forms a preset included angle with the reference vertical plane and an oblique beam which is connected with the supporting beam and the supporting rod. The hoisting mechanism is arranged to be detachably and rotationally connected with the top of the capacitor mounting frame, interference of other elements such as capacitor connecting lines can be avoided when the capacitor is hoisted, and the hoisting device is suitable for different working occasions. By using the chain block, the height required for replacing the capacitor can be accurately adjusted, the labor input is saved, and the whole set of device is light, can be flexibly assembled and is convenient to carry and transport. The oblique beam is arranged between the supporting beam and the supporting rod, so that the structural stability of the hoisting tool can be enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power maintenance equipment, in particular to a lifting tool for replacing an SVC filter device. Background Art

[0002] The steelmaking LF smelting furnace is an inductive load. It generates a large amount of harmonics when working, which seriously restricts the quality of the power supply of the power system. Therefore, a parallel capacitor group is installed in the 110KV substation for compensation to offset the interference of harmonics on the power supply to ensure the normal production of the steelmaking LF refining furnace. The compensation capacitor of the station is arranged according to the 2nd, 3rd, 4th and 5th harmonics according to the on-site load feedback current for real-time compensation. The capacitor (each weighs about 40Kg-50Kg) is often caused by overvoltage, current fluctuations, environmental factors and other factors. Faults such as discharge of capacitor terminals, cracks or oil leakage of porcelain bottles, and bulging of capacitor bodies often occur. When a fault occurs, it is urgently needed to be replaced. The SVC filter device (capacitor) installation bracket is relatively high (3 layers, about 2.4 meters high). The capacitors have to be manually transported, and people stand on the capacitor installation bracket, drag it by manpower, and replace it by people holding it below. There are safety risks such as injuring people and damaging capacitor spare parts, and the maintenance efficiency is low.

[0003] The utility model patent with the authorization announcement number CN205419583U provides a special lifting tool for replacing 1000kV series compensation capacitors, including a lifting bracket, which is installed on the top of the capacitor tower. A mounting bracket is provided at the capacitor installation position to achieve effective lifting and auxiliary installation of the capacitor. The above-mentioned lifting tool is difficult to disassemble and difficult to install. Since the direction of the lifting bracket is affected by the No. 1 hook and difficult to adjust, the use scenario is limited. Based on this, the existing technology still needs to be improved. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model proposes a lifting tool for replacing an SVC filter device, which can at least solve the problem that the lifting tool in the prior art is difficult to install and has limited usage scenarios.

[0005] The utility model provides a lifting tool for replacing an SVC filter device, comprising a support rod and a lifting mechanism. A mounting piece is provided at the bottom of the support rod. The lifting mechanism is provided on one side of the support rod, and is detachably connected to the support rod through a connecting piece and rotatably connected around a vertical axis; a hand chain hoist is provided on the lifting mechanism. The lifting mechanism comprises a support beam provided at a preset angle to a reference vertical plane and an inclined beam connecting the support beam and the support rod.

[0006] In some embodiments, in an actual working state, the support rod is arranged vertically, the support beam is arranged horizontally, and one end of the support beam is welded to the upper end of the support rod.

[0007] In some embodiments, the connecting member includes a first connecting component arranged at the upper part of the support rod and a second connecting component arranged at the lower part of the support rod; the first connecting component and the second connecting component both include a sleeve and an insertion rod; the sleeves of the first connecting component and the second connecting component are correspondingly installed on the support rod up and down, and the insertion rods of the first connecting component and the second connecting component are respectively installed at one end of the support beam and the inclined beam, and each insertion rod is inserted into a corresponding sleeve.

[0008] In some embodiments, mounting seats are installed on the suspended end of the support beam and the insertion rod of the second connecting assembly, and the two ends of the inclined beam are detachably mounted on the mounting seats.

[0009] In some embodiments, two fixing pins are installed above the suspended end of the support beam, and the two fixing pins are spaced apart in the extension direction of the support beam, and the hook of the hand winch is hooked on the support beam between the two fixing pins.

[0010] In some embodiments, the mounting member includes multiple reinforcement plates and a base plate; the multiple reinforcement plates are circumferentially arranged around the lower end of the support rod; the base plate is welded to the bottom of the multiple reinforcement plates, and the base plate is provided with multiple mounting holes corresponding to the lifting holes on the top of the capacitor mounting frame; the base plate is connected to the top of the capacitor mounting frame by bolts and nuts.

[0011] In some embodiments, a lifting ring is welded to the top of the support rod.

[0012] In some embodiments, each mounting seat is provided with a first through hole, and both ends of the inclined beam are provided with a second through hole corresponding to the first through hole, and the ends of the inclined beam are connected to the mounting seat by bolts and nuts.

[0013] In some embodiments, the mounting base is a U-shaped steel.

[0014] In some embodiments, the SVC filter device replacement lifting tool also includes a traction rope, and the traction rope is connected to any part of the lifting mechanism.

[0015] The beneficial effects of the utility model are as follows: the application can avoid interference from other components such as capacitor connecting wires when lifting capacitors by setting the lifting mechanism to be detachably rotatably connected to the top of the capacitor mounting frame, and is suitable for different working occasions. The hand chain hoist can accurately adjust the height required for replacing the capacitor, saving labor input. The whole device is light, can be flexibly assembled, and is easy to carry and transport. By setting an inclined beam between the support beam and the support rod, the structural stability of the lifting tool can be enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of a lifting tool for replacing an SVC filter device provided by an embodiment of the utility model is shown.

[0017] Description of reference numerals:

[0018] 1. Support rod; 2. Support beam; 3. Inclined beam; 4. Hand chain hoist; 5. Reinforcement plate; 6. Bottom plate; 7. Lifting ring; 8. Guy rope; 9. First connecting component; 10. Second connecting component; 11. Fixing pin; 12. Mounting seat; 13. SVC filtering device. DETAILED DESCRIPTION

[0019] It should be understood that the embodiments of the present invention shown in the exemplary embodiments are illustrative only. Although only a few embodiments are described in detail in the present invention, it is easy for those skilled in the art to understand that multiple modifications are feasible without actually departing from the teachings of the subject matter of the present invention. Accordingly, all such modifications should be included within the scope of the present invention. Without departing from the gist of the present invention, other replacements, modifications, changes and deletions may be made to the design, operating conditions and parameters of the following exemplary embodiments.

[0020] The utility model provides a lifting tool for replacing an SVC filter device, which includes a support rod 1 and a lifting mechanism. A mounting piece is provided at the bottom of the support rod 1, and the lifting tool for replacing the SVC filter device is installed at a high point, such as the top of a capacitor mounting frame, through the mounting piece at the bottom of the support rod 1. The lifting mechanism is provided on one side of the support rod 1, and is detachably connected to the support rod 1 by a connecting piece around a vertical axis; a hand chain hoist 4 is provided on the lifting mechanism, and the hand chain hoist 4 is used to lift the SVC filter device 13 (capacitor). Among them, the lifting mechanism includes a support beam 2 set at a preset angle to a reference vertical plane, and an inclined beam 3 connecting the support beam 2 and the support rod 1.

[0021] Compared with the prior art, the present application sets the lifting mechanism to be detachably rotatably connected to the top of the capacitor mounting frame, which can avoid interference from other components such as capacitor connecting wires when lifting the capacitor, and is suitable for different working occasions. The hand chain hoist 4 can be used to accurately adjust the height required for replacing the capacitor, saving labor input. The whole device is light, can be flexibly assembled, and is easy to carry and transport. By setting an inclined beam 3 between the support beam 2 and the support rod 1, the structural stability of the lifting tool can be enhanced.

[0022] In some embodiments, the support rod 1 in the actual working state is arranged vertically, and the support beam 2 is arranged horizontally, and one end of the support beam 2 is connected to the upper end of the support rod 1 by a welded pin at an angle of 90 degrees. The support rod 1 and the support beam 2 can be directly made of metal profiles with a certain strength, such as steel pipes of carbon steel profiles, but not limited to carbon steel profiles. The connection between the support rod 1 and the support beam is preferably a welded connection to ensure the connection strength. The vertical connection structure of the support rod 1 and the support beam can be well matched with the right angle position of the top of the capacitor mounting frame.

[0023] In some embodiments, the connecting member includes a first connecting component 9 disposed on the upper part of the support rod 1 and a second connecting component 10 disposed on the lower part of the support rod 1. The first connecting component 9 and the second connecting component 10 both include a sleeve and a plug rod; the sleeves of the first connecting component 9 and the second connecting component 10 are correspondingly installed on the support rod 1 up and down, for example, they are installed on the side of the support rod 1 by welding; the plug rods of the first connecting component 9 and the second connecting component 10 are respectively installed on one end of the support beam 2 and the inclined beam 3, and each plug rod is inserted into a corresponding sleeve. The rotational connection between the support beam 2 and the inclined beam 3 and the support rod 1 can be realized. Specifically, the first connecting component 9 and the second connecting component 10 can also be designed to weld the plug rod to the support rod 1 up and down; the sleeves of the first connecting component 9 and the second connecting component 10 are respectively welded to one end of the support beam 2 and the inclined beam 3, and during assembly, each sleeve is sleeved on a corresponding plug rod.

[0024] In some embodiments, a mounting seat 12 is installed on the suspended end of the support beam 2 and the plug rod of the second connecting assembly 10, and both ends of the inclined beam 3 are detachably mounted on the mounting seat 12. Specifically, Figure 1 As shown, the mounting seat 12 on the support beam 2 is located below the end of the support beam 2 away from the support rod 1. By setting the inclined beam 3 in a detachable manner, it is convenient to transfer the lifting tool to the installation area or other areas. The inclined beam 3 can be an angle steel, but is not limited to an angle steel, and can also be square steel, steel pipe, etc.

[0025] In some embodiments, two fixing pins 11 are welded above the suspended end of the support beam 2, and the two fixing pins 11 are arranged at intervals in the extension direction of the support beam 2. The hook of the hand chain hoist 4 is hooked on the support beam 2 between the two fixing pins 11 to prevent the hand chain hoist 4 from slipping. In addition, a hook can be welded at the end of the support beam 2 away from the support rod 1 for hoisting the hand chain hoist 4.

[0026] In some embodiments, the mounting member includes a plurality of reinforcing plates 5 and a bottom plate 6; the plurality of reinforcing plates 5 are arranged circumferentially around the lower end of the support rod 1, and each reinforcing plate 5 extends radially along the support rod 1 to enhance the stability of the support rod 1. The bottom plate 6 is welded to the bottom of the plurality of reinforcing plates 5, and the bottom plate 6 is provided with a plurality of mounting holes corresponding to the hoisting holes on the top of the capacitor mounting frame; the bottom plate 6 is connected to the top of the capacitor mounting frame by bolts and nuts. This application utilizes the hoisting holes on the top of the original capacitor bracket on site (all four corners have the same hole spacing), and uses bolts and nuts to install and fix the bottom plate 6 with holes, and can flexibly change the installation position according to the requirements of replacing the capacitor.

[0027] In some embodiments, a lifting ring 7 is welded on the top of the support rod 1. A guy rope 8 can pass through the lifting ring 7, and the guy rope 8 can be set on the side opposite to the setting direction of the support beam 2. The guy rope 8 and the anchor together constitute a stabilization system to ensure stability during the lifting work and prevent instability caused by wind or other external forces, thereby reducing the operation risk and protecting the safety of operators and the surrounding environment.

[0028] In some embodiments, each mounting seat 12 is provided with a first through hole, and both ends of the inclined beam 3 are provided with a second through hole corresponding to the first through hole, and the ends of the inclined beam 3 are connected to the mounting seat 12 by bolts and nuts to achieve a detachable connection of the inclined beam 3 and facilitate assembly. In addition, the detachable connection of the inclined beam 3 can also be achieved by inserting a hook into the first through hole and the second through hole.

[0029] In some embodiments, the mounting seat 12 is a U-shaped steel, that is, the mounting seat 12 includes a first side plate, a second side plate and a connecting plate connecting the first side plate and the second side plate, wherein the connecting plates of the two mounting seats 12 are respectively welded to the suspended end of the support beam 2 and the plug rod of the second connecting assembly 10. The end of the inclined beam 3 is inserted between the first side plate and the second side plate, and both sides of the inclined beam 3 have support points to ensure strong support force.

[0030] In some embodiments, a traction rope (not shown) is further included, and the traction rope is connected to any part of the lifting mechanism, such as the support beam 2 or the inclined beam 3. The provision of the traction rope can facilitate the staff to rotate the lifting structure relative to the support rod 2 by pulling the traction rope, so as to lift the SVC filter device 13 (capacitor) located at different positions, thereby achieving the effect of facilitating the operation of the staff.

[0031] Using the SVC filter device of the present application to replace the lifting tool to install or remove the capacitor can generate greater economic and social benefits:

[0032] 1. Economic benefits

[0033] (1) If a failure occurs and the maintenance and replacement time is 3 hours, the impact on the production capacity of the steelmaking LF refining furnace is:

[0034] Q = 365*N*G*D / (T*10000) = 365*1*200*3 / (38*10000) = 219000 / 380000 = 5,800 tons

[0035] In the formula: Q——Annual production capacity: 10,000 tons

[0036] N——number of LF refining furnaces (calculated as 1);

[0037] G——Amount of molten steel processed per furnace per hour: 200t

[0038] D——Affects effective working time;

[0039] T——Refining cycle: 38min.

[0040] (2) The benefit per ton of steel is calculated as 500 yuan, and the impact benefit is A:

[0041] A=500*Q=500*0.58*10000=2.9 million yuan

[0042] 2. Social Benefits

[0043] Practice has proved that the lifting tool applied for is easy to manufacture and use, the method is unique, and it can be promoted and used in the existing high-voltage power supply and distribution maintenance industry, with significant social benefits.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. If the present invention is modified or replaced by equivalents without departing from the spirit and scope of the present invention, it should be included in the scope of protection of the claims of the present invention.

Claims

1. A lifting tool for replacing an SVC filter device, characterized in that: include: A support rod (1), wherein a mounting piece is provided at the bottom of the support rod (1); A lifting mechanism, the lifting mechanism is arranged on one side of the support rod (1) and is detachably connected to the support rod (1) by a connecting piece so as to rotate around a vertical axis; a hand chain hoist (4) is arranged on the lifting mechanism; The hoisting mechanism comprises a support beam (2) arranged at a preset angle with a reference vertical plane and an inclined beam (3) connecting the support beam (2) and the support rod (1).

2. The SVC filter device replacement lifting tool according to claim 1, characterized in that: In an actual working state, the support rod (1) is arranged vertically, the support beam (2) is arranged horizontally, and one end of the support beam (2) is welded to the upper end of the support rod (1).

3. The SVC filter device replacement hoisting tool according to claim 2, characterized in that: The connecting member comprises a first connecting component (9) arranged at the upper part of the support rod (1) and a second connecting component (10) arranged at the lower part of the support rod (1); the first connecting component (9) and the second connecting component (10) both comprise a sleeve and an insertion rod; the sleeves of the first connecting component (9) and the second connecting component (10) are correspondingly installed on the support rod (1) from top to bottom, and the insertion rods of the first connecting component (9) and the second connecting component (10) are respectively installed at one end of the support beam (2) and the inclined beam (3), and each of the insertion rods is inserted into a corresponding sleeve.

4. The SVC filter device replacement hoisting tool according to claim 3, characterized in that: A mounting seat (12) is installed on the suspended end of the support beam (2) and the insertion rod of the second connection assembly (10), and both ends of the inclined beam (3) are detachably mounted on the mounting seat (12).

5. The SVC filter device replacement hoisting tool according to claim 2, characterized in that: Two fixing pins (11) are installed above the suspended end of the support beam (2), and the two fixing pins (11) are arranged at intervals in the extension direction of the support beam (2), and the hook of the hand chain hoist (4) is hooked on the support beam (2) between the two fixing pins (11).

6. The SVC filter device replacement hoisting tool according to claim 1, characterized in that: The mounting member comprises a plurality of reinforcing plates (5) and a bottom plate (6); the plurality of reinforcing plates (5) are arranged circumferentially around the lower end of the support rod (1); the bottom plate (6) is welded to the bottoms of the plurality of reinforcing plates (5), and the bottom plate (6) is provided with a plurality of mounting holes corresponding to the hoisting holes on the top of the capacitor mounting frame; the bottom plate (6) is connected to the top of the capacitor mounting frame by bolts and nuts.

7. The SVC filter device replacement hoisting tool according to claim 2, characterized in that: A hanging ring (7) is welded to the top of the support rod (1).

8. The SVC filter device replacement hoisting tool according to claim 4, characterized in that: Each of the mounting seats (12) is provided with a first through hole, and both ends of the inclined beam (3) are provided with a second through hole corresponding to the first through hole, and the ends of the inclined beam (3) are connected to the mounting seats (12) by means of bolts and nuts.

9. The SVC filter device replacement hoisting tool according to claim 8, characterized in that: The mounting seat (12) is U-shaped steel.

10. The SVC filter device replacement hoisting tool according to claim 1, characterized in that: It also includes a traction rope, which is connected to any point of the hoisting mechanism.

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