Disassembling and hoisting system for overhauling arc extinguish chamber of high-pressure tank type sulfur hexafluoride circuit breaker

Abstract

The utility model discloses a dismounting and hoisting system for overhauling an arc extinguish chamber of a high-voltage tank-type sulfur hexafluoride circuit breaker, which relates to the technical field of high-voltage equipment overhauling and comprises an insulating pull rod hoisting tool, an arc extinguish chamber lifting tool, an arc extinguish chamber in-out tank tool and an arc extinguish chamber hoisting tool, the insulating pull rod hoisting tool can hoist the insulating pull rod main body out of the circuit breaker tank body; the arc extinguish chamber lifting tool can lift the arc extinguish chamber main body after the insulating pull rod main body is lifted out; the arc extinguish chamber in-out tank tool can move the arc extinguish chamber main body lifted by the arc extinguish chamber lifting tool out of the circuit breaker tank body; the arc extinguish chamber hoisting tool can hoist the arc extinguish chamber main body moved out by the arc extinguish chamber in-out tank tool to the ground. When the dismounting and hoisting system is used for overhauling the high-pressure tank-type sulfur hexafluoride circuit breaker and dismounting and moving the high-pressure tank-type sulfur hexafluoride circuit breaker out of the internal arc extinguish chamber main body, the required safety distance is far smaller than that of a crane used in the prior art, so that the power failure range of electric wires and equipment near the circuit breaker in the overhauling process can be reduced, and the economic loss caused by the power failure range is reduced.

Description

Technical Field

[0001] This application relates to the technical field of high-voltage equipment maintenance, and particularly to a lifting and removing system for overhauling the arc extinguishing chamber of a high-voltage tank-type sulfur hexafluoride circuit breaker. Background Art

[0002] The high-voltage tank-type sulfur hexafluoride circuit breaker is a common high-voltage electrical equipment, mainly used for controlling and protecting the current in the power system. It has excellent arc extinguishing performance and reliability, and is widely used in power transmission and distribution systems, industrial fields, and other occasions that require high-voltage current control and protection. The arc extinguishing chamber body, as the main component for opening and closing in the high-voltage tank-type sulfur hexafluoride circuit breaker, the quality of its device is the key to the reliable operation of the circuit breaker.

[0003] With the development of the power industry and the increasing demand for electricity, the voltage level of the high-voltage tank-type sulfur hexafluoride circuit breaker is also continuously increasing. Along with the increase in the volume and breaking capacity requirements of the circuit breaker, the volume and weight of the arc extinguishing chamber body, the core component of the high-voltage tank-type sulfur hexafluoride circuit breaker, have both increased, which also increases the difficulty of subsequent maintenance of the arc extinguishing chamber body in the high-voltage tank-type sulfur hexafluoride circuit breaker. Currently, when replacing and overhauling the arc extinguishing chamber body of a high-grade high-voltage tank-type sulfur hexafluoride circuit breaker, it is necessary to remove the arc extinguishing chamber body from the circuit breaker tank. For the arc extinguishing chamber body with relatively large volume and weight, the main tool usually used is a crane. During the use of the crane, in order to meet the safety distance requirements of live equipment, all nearby live equipment or live lines will be powered off, which will expand the power-off area during the overhaul of the high-voltage tank-type sulfur hexafluoride circuit breaker and cause some unnecessary economic losses.

[0004] Therefore, there is an urgent need to propose a lifting and removing system that can complete the overhaul of the high-voltage tank-type sulfur hexafluoride circuit breaker without expanding the power-off range. Summary of the Utility Model

[0005] This application provides a lifting and removing system for overhauling the arc extinguishing chamber of a high-voltage tank-type sulfur hexafluoride circuit breaker, which can effectively avoid expanding the power-off range and causing unnecessary economic losses when overhauling the high-voltage tank-type sulfur hexafluoride circuit breaker.

[0006] The above object of this application is achieved through the following technical solutions:

[0007] A lifting and removing system for overhauling the arc extinguishing chamber of a high-voltage tank-type sulfur hexafluoride circuit breaker includes an insulating pull rod lifting tooling, an arc extinguishing chamber lifting tooling, an arc extinguishing chamber in-and-out tank tooling, and an arc extinguishing chamber lifting tooling;

[0008] The insulating rod lifting tool can be installed at the upper inspection hole of the circuit breaker tank body. After the insulating rod lifting tool is installed on the upper inspection hole of the circuit breaker tank body, the insulating rod lifting tool can lift the insulating rod body used to connect the arc extinguishing chamber body and the circuit breaker tank body out from the upper inspection hole of the circuit breaker tank body;

[0009] The arc extinguishing chamber lifting tool can also be installed at the upper inspection hole of the circuit breaker tank body. After the arc extinguishing chamber lifting tool is installed on the upper inspection hole of the circuit breaker tank body, the arc extinguishing chamber lifting tool is used to lift the arc extinguishing chamber body after the insulating pull rod body is lifted out;

[0010] The arc extinguishing chamber in-and-out tank tooling can be put in from the end inspection hole at one end of the circuit breaker tank body, and is used to move the arc extinguishing chamber body lifted by the arc extinguishing chamber lifting tooling out of the circuit breaker tank body;

[0011] The arc extinguishing chamber lifting tool is installed on one side of the circuit breaker tank body, and is used to lift the arc extinguishing chamber body moved out by the arc extinguishing chamber in-and-out tank tool to the ground.

[0012] Furthermore, the insulating pull rod lifting tool comprises a first flange, on which four first columns are evenly fixed along the circumference, wherein the tops of two first columns facing each other are connected by a first cross bar, and the tops of the other two first columns facing each other are connected by a first angle steel, and the first angle steel is higher than the first cross bar in the vertical direction;

[0013] A certain pulley is installed just below the middle position of the first crossbar, and a manual winch is installed on the outer side of the top of one of the first columns. The free end of the wire rope on the manual winch goes around the fixed pulley upward and then extends downward in the vertical direction, and is connected to a hook;

[0014] The first flange is provided with a plurality of first connecting through holes along the circumferential direction, and the first flange can be fixedly installed at the upper inspection hole of the circuit breaker tank body by bolts and nuts through the first connecting through holes.

[0015] Further, the arc extinguishing chamber lifting tooling includes a second flange, on which four second columns are evenly fixed along the circumference, wherein the tops of two second columns facing each other are connected by a second cross bar, and the tops of the other two second columns facing each other are connected by a second angle steel, and the position of the second angle steel in the vertical direction is higher than the second cross bar;

[0016] A fixed electric hoist is installed just below the middle position of the second crossbar;

[0017] A plurality of through second connection through-holes are circumferentially provided on the second flange, and the second flange can also be fixedly installed at the upper inspection hole of the circuit breaker tank body by using bolts and nuts through the second connection through-holes.

[0018] Further, the overall height of the arc extinguishing chamber lifting tooling is less than the height of the insulating pull rod lifting tooling.

[0019] Further, the first angle steel and the first cross bar in the insulating pull rod lifting tooling and the second angle steel and the second cross bar in the arc extinguishing chamber lifting tooling are all fixed together by bolts and nuts.

[0020] Further, the arc extinguishing chamber entering and leaving the tank tooling includes a guide rail. Two sets of sliding units are installed along the length direction below the guide rail. The guide rail can freely slide along the circumferential direction in the circuit breaker tank body through the two sets of sliding units. A moving trolley is arranged in the guide rail, and the moving trolley is slidably connected with the guide rail through guide wheels on its side;

[0021] One opposite side along the width direction at one end of the guide rail is respectively fixedly connected with a mounting plate. Third connection through-holes are provided on the mounting plates, and the mounting plates can be fixed at the end inspection hole of the circuit breaker tank body by using bolts and nuts through the third connection through-holes.

[0022] Further, the sliding unit includes a bottom support main caster and two side casters symmetric about the bottom support main caster. An included angle of 15° is formed between the two side casters and the bottom support main caster. After the arc extinguishing chamber entering and leaving the tank tooling is placed in the circuit breaker tank body, the distances from the two side casters to the center of the circuit breaker tank body are equal to the distance from the bottom support main caster to the center of the circuit breaker tank body.

[0023] Further, the bottom support main casters in the two sets of sliding units are inclined towards the middle of the guide rail along the length direction of the guide rail.

[0024] Further, the arc extinguishing chamber lifting tooling includes an A-shaped long bracket arranged on one side of the circuit breaker tank body. The bottom of the A-shaped long bracket is fixedly installed on the ground. The top of the A-shaped long bracket is fixedly connected with one end of a horizontal cross beam. A traveling electric hoist is installed on the horizontal cross beam, and the traveling electric hoist can freely move along the length direction of the horizontal cross beam.

[0025] Further, an A-shaped short bracket is fixedly connected to one end of the horizontal cross beam away from the A-shaped long bracket. An anchoring steel plate is fixedly connected to the lower end of the A-shaped short bracket. The lower side of the anchoring steel plate is an arc structure matching the edge of the maintenance hole at the end of the circuit breaker tank body. A plurality of fourth connection through holes are provided at the arc end of the anchoring steel plate. The anchoring steel plate can be fixed at the maintenance hole at the end of the circuit breaker tank body by using bolts and nuts through the fourth connection through holes.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] After the insulating pull rod lifting tooling of the present application is assembled at the upper maintenance hole of the circuit breaker tank body, the insulating pull rod main body that restricts the lifting of the arc extinguishing chamber main body in the circuit breaker tank body can be lifted out through the upper maintenance hole. Next, the worker can remove the insulating pull rod lifting tooling from the upper maintenance hole and reinstall the arc extinguishing chamber lifting tooling with a large lifting capacity. This tooling can lift the arc extinguishing chamber main body vertically in the circuit breaker tank body to create a gap between the lower side of the arc extinguishing chamber main body and the circuit breaker tank body, so that the maintenance worker can put the arc extinguishing chamber in-and-out tank tooling into the circuit breaker tank body from the maintenance hole at one end of the circuit breaker tank body. After pushing the arc extinguishing chamber in-and-out tank tooling under the lifted arc extinguishing chamber main body, the arc extinguishing chamber main body can be lowered again by using the arc extinguishing chamber lifting tooling. At this time, the arc extinguishing chamber main body will fall on the arc extinguishing chamber in-and-out tank tooling. After moving the arc extinguishing chamber main body out of the circuit breaker tank body through the arc extinguishing chamber in-and-out tank tooling, the on-site maintenance worker can control the arc extinguishing chamber lifting tooling to move the arc extinguishing chamber main body to the ground, and the disassembly work of the arc extinguishing chamber main body can be completed. Among them, both the insulating pull rod lifting tooling and the arc extinguishing chamber lifting tooling are installed between the two sleeves on the circuit breaker tank body after installation. Therefore, when in use, it is not necessary to extend a long boom like a crane to avoid the sleeves on the circuit breaker tank body, which may affect the cables above the circuit breaker. In addition, when the arc extinguishing chamber in-and-out tank tooling and the arc extinguishing chamber lifting tooling of the present application cooperate to place the arc extinguishing chamber main body on the ground, since their overall volume and working range are much smaller than that of a crane, the power supply of nearby equipment or live equipment can be effectively avoided from being cut off to meet the safety distance requirements during the disassembly and lifting of the arc extinguishing chamber main body, thereby reducing the economic loss caused by expanding the maintenance power outage area. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a schematic structural diagram of a common high-voltage tank-type sulfur hexafluoride circuit breaker in the prior art;

[0030] Figure 2 It is a schematic diagram of the state after installing the insulating pull rod lifting tooling and the arc extinguishing chamber lifting tooling of the present application on the high-voltage pot-type sulfur hexafluoride circuit breaker to be overhauled, and then using the insulating pull rod lifting tooling to lift the main body of the insulating pull rod out of the circuit breaker tank body;

[0031] Figure 3 It is after Figure 2 On the basis of , the insulating pull rod lifting tooling is replaced with the arc extinguishing chamber lifting tooling, and the arc extinguishing chamber entering and exiting the tank tooling is put into the circuit breaker tank body from the end maintenance hole of the circuit breaker tank body. It is a schematic diagram of the state after the arc extinguishing chamber lifting tooling places the main body of the arc extinguishing chamber on the arc extinguishing chamber entering and exiting the tank tooling;

[0032] Figure 4 It is after Figure 3 On the basis of , it is a schematic diagram of the state when the main body of the arc extinguishing chamber is sent out of the circuit breaker tank body by using the mobile trolley in the arc extinguishing chamber entering and exiting the tank tooling;

[0033] Figure 5 It is after Figure 4 On the basis of , it is a schematic diagram of the state when the main body of the arc extinguishing chamber is placed on the transfer trolley on the ground by using the arc extinguishing chamber lifting tooling;

[0034] Figure 6 It is a partial structural schematic diagram when the insulating pull rod lifting tooling of the present application is in use;

[0035] Figure 7 It is a partial structural schematic diagram when the arc extinguishing chamber lifting tooling of the present application is in use;

[0036] Figure 8 It is a partial structural schematic diagram when the arc extinguishing chamber entering and exiting the tank tooling of the present application is in use inside the circuit breaker tank body;

[0037] Figure 9 It is a schematic diagram of the state when observing from the end maintenance hole of the circuit breaker tank body when the arc extinguishing chamber entering and exiting the tank tooling of the present application is transferring the main body of the arc extinguishing chamber inside the circuit breaker tank body;

[0038] Figure 10 It is a partial structural schematic diagram when the arc extinguishing chamber lifting tooling of the present application is in use;

[0039] Figure 11 Figure 10 View A of the structure in ;

[0040] Figure 12 Figure 10 View B of the structure in .

[0041] Reference Numerals: 1, lifting tool for insulating pull rod; 101, first flange; 102, first column; 103, first cross bar; 104, first angle steel; 105, fixed pulley; 106, manual winch; 107, first connection through hole; 2, lifting tool for arc extinguishing chamber; 21, second flange; 22, second column; 23, second cross bar; 24, second angle steel; 25, fixed electric hoist; 26, second connection through hole; 3, tool for moving arc extinguishing chamber in and out of tank; 31, guide rail; 32, sliding unit; 321, main caster at bottom support; 322, side caster; 33, moving trolley; 34, guide wheel; 35, mounting plate; 36, third connection through hole; 4, lifting tool for arc extinguishing chamber; 41, A-shaped long bracket; 42, horizontal cross beam; 43, running electric hoist; 5, A-shaped short bracket; 6, anchor steel plate; 7, fourth connection through hole; 8, breaker tank; 9, bushing; 10, upper maintenance hole; 11, end maintenance hole; 12, arc extinguishing chamber body; 13, insulating pull rod body; 14, transfer flatbed truck. Detailed Implementation Manner

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts also belong to the scope of protection of the present application.

[0043] As Figures 1-5 shown, a disassembly and lifting system for overhauling the arc extinguishing chamber of a high-voltage tank-type sulfur hexafluoride breaker disclosed in the present application includes a lifting tool 1 for insulating pull rod, a lifting tool 2 for arc extinguishing chamber, a tool 3 for moving the arc extinguishing chamber in and out of the tank, and a lifting tool 4 for arc extinguishing chamber;

[0044] The lifting tool 1 for insulating pull rod can be installed at the upper maintenance hole 10 of the breaker tank 8. After the lifting tool 1 for insulating pull rod is installed on the upper maintenance hole 10 of the breaker tank 8, the lifting tool 1 for insulating pull rod can lift out the insulating pull rod body 13 used to connect the arc extinguishing chamber body 12 and the breaker tank 8 from the upper maintenance hole 10 of the breaker tank 8;

[0045] The lifting tool 2 for arc extinguishing chamber can also be installed at the upper maintenance hole 10 of the breaker tank 8. After the lifting tool 2 for arc extinguishing chamber is installed on the upper maintenance hole 10 of the breaker tank 8, the lifting tool 4 for arc extinguishing chamber is used to lift the arc extinguishing chamber body 12 after the insulating pull rod body 13 is lifted out;

[0046] The tool 3 for moving the arc extinguishing chamber in and out of the tank can be inserted through the end maintenance hole 11 at one end of the breaker tank 8, and is used to move the arc extinguishing chamber body 12 lifted by the lifting tool 2 for arc extinguishing chamber out of the breaker tank 8;

[0047] The arc extinguishing chamber hoisting tooling 4 is installed on one side of the breaker tank body 8 and is used to hoist the arc extinguishing chamber main body 12 removed by the arc extinguishing chamber in-and-out tank tooling 3 to the ground.

[0048] In the above embodiments, as Figure 1 shown, the traditional high-voltage tank-type sulfur hexafluoride breaker mainly consists of a bushing 9, a CT assembly, a breaker tank body 8 part, and a lower operating mechanism, etc. The arc extinguishing chamber main body 12 is generally located inside the breaker tank body 8. An upper inspection hole 10 is provided on the upper side at the middle position of the breaker tank body 8, and an end inspection hole 11 is provided at both ends in the axial direction of the breaker tank body 8. An insulating pull rod main body 13 is inserted on the arc extinguishing chamber main body 12 in the breaker tank body 8. The insulating pull rod main body 13 is mainly used to connect the moving contact of the arc extinguishing chamber main body 12 and the operating mechanism in the breaker. Therefore, to disassemble the arc extinguishing chamber main body 12 from the breaker, it is necessary to disassemble the connection points at both ends of the insulating pull rod main body 13 and lift it from the arc extinguishing chamber main body 12 to release its restriction on the arc extinguishing chamber main body 12. All these contents are prior art, and the specific details and principles will not be elaborated here.

[0049] When overhauling the arc extinguishing chamber main body 12 in the high-voltage tank-type sulfur hexafluoride breaker, the traditional method is to carefully move it to the vicinity of the breaker to be overhauled by a crane. Since the crane needs to maintain a sufficient safety distance from the nearby live equipment and live lines for safety during operation. When the crane is in use, in addition to its relatively large volume in this application, the boom needs to swing circumferentially and extend in its length direction to avoid obstacles during operation, which also results in a large influence range on the surrounding of the breaker during its operation. To ensure safety, it is necessary to cut off the power supply of the live equipment or live lines near the breaker to be overhauled, thus expanding the overhaul power outage area on site and bringing unnecessary economic losses.

[0050] When the disassembly and hoisting system of the present application is in use, as Figure 2 shown, the insulating pull rod hoisting tooling 1 can be first assembled at the upper inspection hole 10 of the breaker tank body 8, and then the insulating pull rod main body 13 is hoisted out from the upper inspection hole 10 of the breaker tank body 8 to release its restriction on the arc extinguishing chamber main body 12. As Figure 3 and Figure 4As shown, the worker can then remove the insulating pull rod lifting tooling 1 from the upper inspection hole 10 and reinstall the arc extinguishing chamber lifting tooling 2 with a greater lifting capacity. This tooling can lift the arc extinguishing chamber body 12 after the restriction is removed vertically within the circuit breaker tank 8, creating a gap between the lower side of the arc extinguishing chamber body 12 and the circuit breaker tank 8. This allows the maintenance worker to insert the arc extinguishing chamber in-out tank tooling 3 through the end inspection hole 11 at one end of the circuit breaker tank 8. After pushing the arc extinguishing chamber in-out tank tooling 3 under the lifted arc extinguishing chamber body 12, the arc extinguishing chamber lifting tooling 2 can be used to lower the arc extinguishing chamber body 12 again. At this time, the arc extinguishing chamber body 12 will rest on the arc extinguishing chamber in-out tank tooling 3. After removing the arc extinguishing chamber body 12 from the circuit breaker tank 8 through the arc extinguishing chamber in-out tank tooling 3, as Figure 5 shown, the on-site maintenance worker can operate the arc extinguishing chamber lifting tooling 4 to move the arc extinguishing chamber body 12 to the ground, completing the disassembly of the arc extinguishing chamber body 12.

[0051] When reinstalling the arc extinguishing chamber body 12 subsequently, first use the arc extinguishing chamber lifting tooling 4 to lift the arc extinguishing chamber body 12 to be installed and place it on the arc extinguishing chamber in-out tank tooling 3. Then, the arc extinguishing chamber in-out tank tooling 3 can place the arc extinguishing chamber body 12 under the arc extinguishing chamber lifting tooling 2 that has been pre-installed at the upper inspection hole 10 of the circuit breaker tank 8. After the arc extinguishing chamber lifting tooling 2 lifts the circuit breaker tank 8, remove the arc extinguishing chamber in-out tank tooling 3. After the arc extinguishing chamber lifting tooling 2 lowers the circuit breaker, remove the arc extinguishing chamber lifting tooling 2, install the insulating pull rod lifting tooling 1, lower the insulating pull rod body 13, and the maintenance worker can reinstall and fix the insulating pull rod body 13 within the circuit breaker tank 8.

[0052] Among them, the insulating pull rod lifting tooling 1 and the arc extinguishing chamber lifting tooling 2 are both installed between two bushings 9 on the circuit breaker tank body 8 after installation. The height of the insulating pull rod lifting tooling 1, which is higher than that of the arc extinguishing chamber lifting tooling 2, only needs to meet the requirement of lifting the insulating pull rod main body 13 out of the circuit breaker tank body 8. During use, it does not need to extend a long boom and tilt the boom towards the circuit breaker tank body 8 like a crane placed on the ground to avoid the bushings 9 on the circuit breaker tank body 8, thus affecting the wires and equipment above and around the circuit breaker. In addition, the movement trajectory of the arc extinguishing chamber in-and-out tank tooling 3 of the present application is basically within the circuit breaker tank body 8, so it will not affect the wires and equipment around the circuit breaker. When the arc extinguishing chamber lifting tooling 4 hoists the arc extinguishing chamber main body 12 transferred out by the arc extinguishing chamber in-and-out tank tooling 3 to the ground, its hoisting process will not be affected by components such as the bushings 9. Therefore, after hooking the arc extinguishing chamber main body 12, it can be simply lowered vertically. Compared with a crane hoisting the arc extinguishing chamber main body 12, the volume and working range of the arc extinguishing chamber lifting tooling 4 of the present application are much smaller than those of a crane. Therefore, when disassembling and hoisting the arc extinguishing chamber main body 12, the disassembly and hoisting system of the present application can effectively avoid the power-off of nearby equipment or energized equipment to meet the safety distance requirements, thereby reducing the economic losses caused by expanding the maintenance power-off area.

[0053] Further, as Figure 2 and Figure 6 shown, the insulating pull rod lifting tooling 1 includes a first flange 101. Four first columns 102 are fixedly arranged on the first flange 101 along the circumferential direction. The tops of two mutually opposite first columns 102 are connected by a first cross bar 103, and the tops of the other two mutually opposite first columns 102 are connected by a first angle steel 104. Moreover, the position of the first angle steel 104 in the vertical direction is higher than that of the first cross bar 103;

[0054] A fixed pulley 105 is installed directly below the middle position of the first cross bar 103. A manual winch 106 is installed on the outside of the top of one of the first columns 102. The free end of the steel wire rope on the manual winch 106 extends upward around the fixed pulley 105 and then extends downward in the vertical direction and is connected with a hook;

[0055] A plurality of through first connection through holes 107 are arranged on the first flange 101 along the circumferential direction. The first flange 101 can be fixedly installed on the upper inspection hole 10 of the circuit breaker tank body 8 through the first connection through holes 107 using bolts and nuts.

[0056] In the above embodiments, the diameter of the first flange 101 matches the diameter at the upper maintenance hole 10 of the circuit breaker tank 8. A cover plate is fixedly installed at the upper maintenance hole 10 of the circuit breaker tank 8 by bolts and nuts during normal use. Correspondingly, through holes for passing bolts and nuts are also provided at the upper maintenance hole 10 of the circuit breaker tank 8. The axial direction of the first flange 101 is just provided with a first connection through hole 107. Therefore, after placing the first flange 101 at the upper maintenance hole 10 of the circuit breaker tank 8, bolts and nuts can be used to pass through the first connection through hole 107 on the first flange 101 and the through holes at the upper maintenance hole 10 of the circuit breaker tank 8 in sequence, so as to fixedly install the first flange 101 at the upper maintenance hole 10 of the circuit breaker tank 8.

[0057] The four first columns 102 are grouped in pairs of opposite first columns 102, and can just be divided into two groups. One group of opposite first columns 102 is higher than the other group of opposite first columns 102. After the tops of the two lower first columns 102 are connected by the first cross bar 103, when the tops of the other two higher first columns 102 are connected by the first angle steel 104, they will not be affected by the first cross bar 103. And the first cross bar 103 and the first angle steel 104 are fixedly connected, which can improve the stability and strength of the overall frame. Since the first cross bar 103 is located below the first angle steel 104, the fixed pulley 105 is installed below the first cross bar 103. After the steel wire rope on the manual winch 106 installed on the outside of one of the first columns 102 bypasses the fixed pulley 105, the fixed pulley 105 can guide the steel wire rope to be vertically downward below the first cross bar 103, so as to lift the insulating rod body 13 from the upper maintenance hole 10 of the circuit breaker tank 8 by using a hook. A hole for the steel wire rope to pass through can be drilled at the first column 102 where the manual winch 106 is installed, so that the steel wire rope can smoothly wind from the manual winch 106 to the fixed pulley 105. The winch of the manual winch 106 can preferably be a winch with a self-locking function, so as to improve safety when hoisting the insulating rod body 13.

[0058] Since the insulating rod body 13 is a component connecting the moving contact of the arc extinguishing chamber body 12 in the circuit breaker and the operating mechanism, and is inserted into the arc extinguishing chamber body 12, during the upward lifting process, it needs to be slowly lifted and cannot be pulled hard to prevent damage to the insulating rod body 13. This requires the operator to accurately perceive the force received during the lifting process of the insulating rod body 13. Moreover, the weight of the insulating rod body 13 is much smaller than that of the arc extinguishing chamber body 12. Therefore, the present application uses a manual winch 106 to lift the insulating rod body 13. In this way, during the lifting process, the worker can not only better grasp the lifting force and speed, but also when the insulating rod body 13 generates resistance due to accidental jamming during the lifting process, the worker can quickly perceive it at the winch to make timely adjustments.

[0059] Furthermore, as Figure 3 and Figure 7 shown, the arc extinguishing chamber lifting tooling 2 includes a second flange 21. Four second columns 22 are fixedly arranged on the second flange 21 along the circumferential direction at equal intervals. The tops of two second columns 22 facing each other are connected by a second cross bar 23, and the tops of the other two second columns 22 facing each other are connected by a second angle steel 24, and the position of the second angle steel 24 in the vertical direction is higher than that of the second cross bar 23;

[0060] A fixed electric hoist 25 is installed directly below the middle position of the second cross bar 23;

[0061] A plurality of through second connection through holes 26 are arranged on the second flange 21 along the circumferential direction. The second flange 21 can also be fixedly installed at the upper inspection hole 10 of the circuit breaker tank body 8 by using bolts and nuts through the second connection through holes 26.

[0062] In the above embodiments, for the arc extinguishing chamber lifting tooling 2, the bolts can pass through the second connection through holes 26 on the second flange 21 and the through holes at the upper inspection hole 10 of the circuit breaker tank body 8 and cooperate with nuts to fix the two together. Since the structure of the second flange 21 in the arc extinguishing chamber lifting tooling 2 is similar to that of the first flange 101 in the insulating pull rod lifting tooling 1, when the insulating pull rod lifting tooling 1 is removed during actual use, the first flange 101 can also be retained, and the four second columns 22 can be directly installed on the first flange 101, which can improve the assembly efficiency of the arc extinguishing chamber lifting tooling 2.

[0063] The way and principle of connecting the tops of the four second columns 22 by the second cross bar 23 and the second angle steel 24 are the same as those of connecting the tops of the four first columns 102 by the first cross bar 103 and the first angle steel 104 in the previous embodiment. Therefore, for the way and principle of connecting the tops of the four second columns 22 by the second cross bar 23 and the second angle steel 24, reference can be made to the relevant content in the previous embodiment.

[0064] Since the weight of the arc extinguishing chamber main body 12 is relatively large, it is very difficult to lift it manually. Therefore, a fixed electric hoist 25 is selected to be installed below the second cross bar 23, and the electric hoist lifts the arc extinguishing chamber main body 12, which can effectively save manpower.

[0065] Furthermore, the overall height of the arc extinguishing chamber lifting tooling 2 is less than that of the insulating pull rod lifting tooling 1.

[0066] In the above embodiments, since the insulating pull rod lifting tool 1 needs to lift the insulating pull rod body 13 out of the circuit breaker tank body 8 as a whole, the overall height of the insulating pull rod lifting tool 1 is not less than the length of the insulating pull rod body 13, and the insulating pull rod body 13 passes through the arc extinguishing chamber body 12 when in use, so its length is greater than the height of the arc extinguishing chamber body 12, and the arc extinguishing chamber lifting tool 2 lifts the arc extinguishing chamber body 12 in the circuit breaker tank body 8 for the purpose of placing the arc extinguishing chamber in-and-out tank tool 3 underneath it, and it will not leave the circuit breaker tank body 8, so the height of the arc extinguishing chamber lifting tool 2 does not need to be as high as the insulating pull rod lifting tool 1, so that not only the efficiency of lowering the electric hoist hook in the arc extinguishing chamber lifting tool 2 will be improved, but also after the height of the second column 22 is reduced, the overall structure of the arc extinguishing chamber lifting tool 2 will be more compact and the stability will be better.

[0067] Furthermore, if Figure 6 and Figure 7 As shown, the first angle steel 104 and the first cross bar 103 in the insulating pull rod lifting tool 1 and the second angle steel 24 and the second cross bar 23 in the arc extinguishing chamber lifting tool 2 are fixed together by bolts and nuts.

[0068] In the above embodiments, the first angle steel 104 and the first cross bar 103 in the insulating pull rod lifting tool 1 and the second angle steel 24 and the second cross bar 23 in the arc extinguishing chamber lifting tool 2 are fixed together by bolts and nuts, which are more convenient to install and disassemble than the welding fixing method.

[0069] Furthermore, if Figure 3 , Figure 4 , Figure 8 and Figure 9 As shown, the arc extinguishing chamber inlet and outlet tank tooling 3 includes a guide rail 31, and two sets of sliding units 32 are installed below the guide rail 31 along its length direction. The guide rail 31 can slide freely along its circumferential direction in the circuit breaker tank body 8 through the two sets of sliding units 32. A moving trolley 33 is provided in the guide rail 31, and the moving trolley 33 is slidably connected to the guide rail 31 through the guide wheel 34 on its side;

[0070] One end of the guide rail 31 is fixedly connected to an opposite side along the width direction with a mounting plate 35, and the mounting plate 35 is provided with a third connecting through hole 36. The mounting plate 35 can be fixed to the end inspection hole 11 of the circuit breaker tank 8 by bolts and nuts through the third connecting through hole 36.

[0071] In the above embodiments, the guide rail 31 of the present application includes two mutually parallel tracks, and the two tracks are connected by a plurality of hollow steel pipes. Grooves are provided on the mutually approaching sides of the two tracks. Guide wheels 34 are installed on both sides of the moving trolley 33 along the width direction of the guide rail 31, and the guide wheels 34 on both sides of the moving trolley 33 are respectively embedded in the grooves of the two tracks. In this way, the moving trolley 33 can slide along the length direction of the guide rail 31 through the guide wheels 34. The two sets of sliding units 32 installed below the guide rail 31 facilitate the workers to send it into the circuit breaker tank 8 through the end maintenance hole 11 at one end of the circuit breaker tank 8. After the mounting plate 35 at one end of the guide rail 31 is placed at the designated position in the circuit breaker tank 8, bolts can be passed through the third connection through holes 36 thereon and the through holes for installing the cover plate at the end maintenance hole 11 of the circuit breaker tank 8 and cooperated with nuts to complete the fixation of the entire guide rail 31. In this way, when driving the moving trolley 33 on the guide rail 31, the guide rail 31 can be prevented from moving together.

[0072] After the arc extinguishing chamber lifting tooling 2 lifts the arc extinguishing chamber body 12, the maintenance worker can push the guide rail 31 into the circuit breaker tank 8 from one end, and then use bolts and nuts to fix it to the end maintenance hole 11 of the circuit breaker tank 8 through the mounting plate 35 on the guide rail 31. Then, the arc extinguishing chamber body 12 is placed on the moving trolley 33 on the guide rail 31 by the arc extinguishing chamber lifting tooling 2. The maintenance worker uses the moving trolley 33 to push the arc extinguishing chamber body 12 out of the circuit breaker tank 8 to a suitable position, so that the arc extinguishing chamber lifting tooling 4 built outside the circuit breaker tank 8 can hoist the arc extinguishing chamber body 12. The arc extinguishing chamber in-out tank tooling 3 of the present application is convenient for workers to quickly push the arc extinguishing chamber body 12 out of the circuit breaker tank 8, thereby improving the maintenance efficiency.

[0073] Further, as Figure 9 shown, the sliding unit 32 includes a bottom support main caster 321 and two side casters 322 symmetric about the bottom support main caster 321. An included angle of 15° is formed between the two side casters 322 and the bottom support main caster 321. After the arc extinguishing chamber in-out tank tooling 3 is placed in the circuit breaker tank 8, the distances from the two side casters 322 to the center of the circuit breaker tank 8 are equal to the distance from the bottom support main caster 321 to the center of the circuit breaker tank 8.

[0074] In the above embodiments, the bottom support main caster 321 and the side casters 322 on both sides in the sliding unit 32 of the present application are arranged in the above manner, which can facilitate maintenance workers to move the guide rail 31 in the breaker tank 8. Directly below the middle position of the guide rail 31, it can provide a main upward vertical support force for the guide rail 31. The included angles between the two side casters 322 symmetrically arranged on both sides of the guide rail 31 and the bottom support main caster 321 are both 15°. After the guide rail 31 is placed in the breaker tank 8, the distance from the side caster 322 to the center of the breaker tank 8 is equal to the distance from the bottom support main caster 321 to the center of the breaker tank 8. In this way, during the movement of the guide rail 31, the two side casters 322 can also contact the inner wall of the breaker tank 8 together with the bottom support main caster 321, which can not only share the force borne by the bottom support main caster 321, but also play a guiding and lateral support effect during the movement to ensure the stable movement of the guide rail 31 in the breaker tank 8.

[0075] Further, as Figure 8 shown, the bottom support main casters 321 in the two groups of sliding units 32 are both inclined towards the middle of the guide rail 31 along the length direction of the guide rail 31.

[0076] In the above embodiments, the two bottom support main casters 321 are both arranged in the above manner, which can reduce the distance between them, thereby increasing the movement range of the guide rail 31.

[0077] Further, as Figure 10 and Figure 12 shown, the arc extinguishing chamber lifting tooling 4 includes an A-shaped long bracket 41 arranged on one side of the breaker tank 8. The bottom of the A-shaped long bracket 41 is fixedly installed on the ground. The top of the A-shaped long bracket 41 is fixedly connected to one end of a horizontal crossbeam 42. A traveling electric hoist 43 is installed on the horizontal crossbeam 42, and the traveling electric hoist 43 can move freely along the length direction of the horizontal crossbeam 42.

[0078] In the above embodiments, the A-shaped long bracket 41 is installed vertically on the breaker tank 8 outside the end inspection hole 11 for installing the arc extinguishing chamber in-out tank tooling 3. The lower end of the A-shaped long bracket 41 is fixedly installed on the ground, and the upper end is connected to a horizontal crossbeam 42. The horizontal crossbeam 42 can be selected as an I-beam. After the traveling electric hoist 43 is installed on the horizontal crossbeam 42, the traveling electric hoist 43 can move along the horizontal crossbeam 42 by its moving wheels, forming a structure similar to a crane. As Figure 5As shown, after the arc extinguishing chamber body 12 is removed from the circuit breaker tank 8 by the arc extinguishing chamber inlet / outlet tank tooling 3, the traveling electric hoist 43 can move along the horizontal crossbeam 42 to above the arc extinguishing chamber body 12, hook the installed lifting lugs on the arc extinguishing chamber body 12 with its hook, then lift the arc extinguishing chamber body 12 and translate it along the horizontal crossbeam 42 for a certain distance to avoid the arc extinguishing chamber inlet / outlet tank tooling 3, and finally place the arc extinguishing chamber body 12 vertically on the ground or on the transfer trolley 14 prepared in advance on the ground. The operation is simple and convenient.

[0079] Furthermore, as Figure 10 and Figure 11 shown, at one end of the horizontal crossbeam 42 far from the A-shaped long bracket 41, an A-shaped short bracket 5 is fixedly connected. At the lower end of the A-shaped short bracket 5, an anchor plate 6 is fixedly connected. The lower side of the anchor plate 6 is an arc-shaped structure matching the edge of the end inspection hole 11 of the circuit breaker tank 8. Multiple fourth connection through holes 7 are provided at the arc-shaped end of the anchor plate 6. Through the fourth connection through holes 7, the anchor plate 6 can be fixed at the end inspection hole 11 of the circuit breaker tank 8 by using bolts and nuts.

[0080] In the above embodiments, one end of the horizontal crossbeam 42 close to the circuit breaker tank 8 is supported at the end inspection hole 11 at one end of the circuit breaker tank 8 by the A-shaped short bracket 5, and the cooperation with the A-shaped long bracket 41 can improve the stability of the horizontal crossbeam 42 during use. After the fourth connection through holes 7 provided at the arc-shaped end of the anchor plate 6 at the lower end of the A-shaped short bracket 5 are aligned with the through holes on the corresponding side end inspection hole 11 of the circuit breaker tank 8, they can also be fixed by using bolts and nuts to ensure the fixing effect of the A-shaped short bracket 5. During disassembly and lifting, the mounting plate 35 on the guide rail 31 and the anchor plate 6 below the A-shaped short bracket 5 are connected to the end inspection hole 11 at the same end of the circuit breaker tank 8, but the connection position of the mounting plate 35 with the end inspection hole 11 is located in its lower half, and the connection position of the anchor plate 6 with the end inspection hole 11 is located in its upper half, so there will be no interference between the two.

[0081] The implementation principle of this embodiment is as follows: When it is necessary to remove the arc extinguishing chamber main body 12 in the circuit breaker tank 8 for maintenance, first, the worker removes the cover plate at the upper maintenance hole 10 of the circuit breaker tank 8, then aligns the first flange 101 with the upper maintenance hole 10 and fixes it at the upper maintenance hole 10 using bolts and nuts. After standing the four first columns 102 at the designated positions above the first flange 101, they are also fixed with bolts and nuts. After installing the first cross bar 103 and the first angle steel 104 above the four first columns 102 as required, a fixed pulley 105 can be installed on the first cross bar 103, and a manual hoist 106 can be installed outside one of the first columns 102, then the installation of the insulating rod lifting tooling 1 on the circuit breaker tank 8 can be completed. It is also possible to assemble the insulating rod lifting tooling 1 on the ground first and then fix its first flange 101 to the upper maintenance hole 10 of the circuit breaker tank 8.

[0082] After the on-site maintenance worker cooperates with the manual hoist 106 in the insulating rod lifting tooling 1 to lift out the insulating rod main body 13, the insulating rod lifting tooling 1 can be removed. Referring to the assembly method of the insulating rod lifting tooling 1, install the arc extinguishing chamber lifting tooling 2 at the upper maintenance hole 10 of the circuit breaker. Use the fixed electric hoist 25 in the arc extinguishing chamber lifting tooling 2 to hook the lifting lug installed at the top of the arc extinguishing chamber main body 12 and lift it inside the circuit breaker tank 8, and remove the cover plate at the end maintenance hole 11 at one end of the circuit breaker tank 8. Push the guide rail 31 and the moving trolley 33 thereon in the arc extinguishing chamber entering and exiting the tank tooling 3 into the circuit breaker tank 8 from the end maintenance hole 11, then connect the mounting plate 35 on the guide rail 31 to the end maintenance hole 11 after removing the cover plate on the circuit breaker tank 8. Then adjust the position of the moving trolley 33 so that it is located below the arc extinguishing chamber main body 12. After using the fixed electric hoist 25 in the arc extinguishing chamber lifting tooling 2 to place the arc extinguishing chamber main body 12 on the moving trolley 33, the arc extinguishing chamber main body 12 can be pushed out of the circuit breaker tank 8 along the guide rail 31.

[0083] When assembling the arc extinguishing chamber lifting tooling 4, first fix the A-shaped long bracket 41 and the A-shaped short bracket 5 at the designed positions, then erect and fix the horizontal cross beam 42 on the tops of the A-shaped short bracket 5 and the A-shaped long bracket 41, and install the running electric hoist 43 on the horizontal cross beam 42. In order to facilitate the maintenance worker to move the components of the arc extinguishing chamber lifting tooling 2, the insulating rod lifting tooling 1, and the arc extinguishing chamber entering and exiting the tank tooling 3 up and down on the circuit breaker tank 8, the assembly work of the arc extinguishing chamber lifting tooling 4 can be carried out first. When the arc extinguishing chamber main body 12 is pushed out of the circuit breaker tank 8 to a suitable position outside by the worker along with the moving trolley 33 on the guide rail 31, the worker can control the running electric hoist 43 to hook the lifting lug on the arc extinguishing chamber main body 12 and place it on the transfer trolley 14 prepared in advance on the ground. Finally, the arc extinguishing chamber main body 12 is sent to the designated position along the ground through the transfer trolley 14.

[0084] To facilitate the understanding of the disassembly and lifting system in this application, the overhaul work of the arc extinguishing chamber body 12 of the high-voltage tank-type sulfur hexafluoride circuit breaker with the model LW13A-550 is taken as an example for illustration. The circuit breaker is about 4.7 meters long, and the axis of the circuit breaker tank 8 with a diameter of about 1 meter is about 2.6 meters above the ground. Among them, the vertical height of the bushing 9 on the circuit breaker tank 8 is about more than 8 meters, the height of the arc extinguishing chamber body 12 is about 0.6 meters, and the total length of the insulating rod body 13 is about 1.05 meters. The overall height of the insulating rod lifting tooling 1 in this application after installation is designed to be 1.65 meters, and the distance between the fixed pulley 105 and the inspection hole 10 on the circuit breaker tank 8 is about 1.5 meters. This height can ensure that there is enough space below the fixed pulley 105 to lift the insulating rod body 13 out of the circuit breaker tank 8. The arc extinguishing chamber lifting tooling 2 only needs to lift the arc extinguishing chamber body 12 a certain distance inside the circuit breaker tank 8 to ensure that the guide rail 31 in the arc extinguishing chamber in-and-out tank tooling 3 can be smoothly inserted. Therefore, the overall height of the arc extinguishing chamber lifting tooling 4 does not need to be as high as that of the insulating rod lifting tooling 1. Its overall height is designed to be 0.85 meters, and the clear height between the lower part of the fixed electric hoist 25 and the upper inspection hole 10 is about 0.7 meters. This height is sufficient to lift the arc extinguishing chamber body 12 to the highest position inside the circuit breaker tank 8. Since the arc extinguishing chamber in-and-out tank tooling 3 is located inside the circuit breaker tank 8 during use and will not affect the equipment and wires near the circuit breaker, the relevant dimensions are not specifically described here. The height of the arc extinguishing chamber in-and-out tank tooling 3 only needs to meet the requirement that it can move freely in the gap between the lower side of the arc extinguishing chamber body 12 and the circuit breaker tank 8 after lifting the arc extinguishing chamber body 12, and its length only needs to meet the requirement of smoothly sending the arc extinguishing chamber body 12 out of the circuit breaker tank 8. The overall length of the arc extinguishing chamber lifting tooling 4 is about 3.6 meters, and the height is about 3.8 meters. This size is sufficient to place the arc extinguishing chamber body 12 from the moving trolley 33 of the arc extinguishing chamber in-and-out tank tooling 3 onto the ground.

[0085] As can be seen from the above, when the disassembly and lifting system of the present application is in use, after the insulating pull rod lifting tooling 1 and the arc extinguishing chamber lifting tooling 2 are installed on the circuit breaker tank body 8 on the premise of meeting their own functions, they are also much lower than the height of the bushing 9 on the circuit breaker. When the circuit breaker is in normal use, the components thereof are at a safe distance from the surrounding wires and equipment. Therefore, the insulating pull rod lifting tooling 1 and the arc extinguishing chamber lifting tooling 2, which are lower than the bushing 9 of the circuit breaker, will not affect the wires and equipment near the circuit breaker during use. Correspondingly, the wires and equipment near the circuit breaker do not need to be de-energized on a large scale during their use. Similarly, the height of the arc extinguishing chamber lifting tooling 4 of the present application is also much lower than the height of the circuit breaker. Moreover, the arc extinguishing chamber lifting tooling 4 directly lifts the arc extinguishing chamber main body 12 from the arc extinguishing chamber access tank tooling 3 outside the circuit breaker tank body 8 to the ground, and its lifting and moving process will not be affected by components such as the bushing 9. Compared with the method of using a crane to lift and move the arc extinguishing chamber main body 12, the volume and operation range of the arc extinguishing chamber lifting tooling 4 of the present application are much smaller than those of the crane. Therefore, when disassembling and lifting the arc extinguishing chamber main body 12 of the circuit breaker, the disassembly and lifting system of the present application can effectively reduce the impact on nearby equipment or energized equipment, thereby reducing the economic losses caused by expanding the maintenance power outage area.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A disassembly and lifting system for overhauling the arc extinguishing chamber of a high-voltage tank-type sulfur hexafluoride circuit breaker, characterized in that: It includes an insulating pull rod lifting tooling (1), an arc extinguishing chamber lifting tooling (2), an arc extinguishing chamber entering and exiting the tank tooling (3), and an arc extinguishing chamber lifting tooling (4); The insulating pull rod lifting tooling (1) can be installed at the upper maintenance hole (10) of the circuit breaker tank body (8). After the insulating pull rod lifting tooling (1) is installed on the upper maintenance hole (10) of the circuit breaker tank body (8), the insulating pull rod lifting tooling (1) can lift out the insulating pull rod main body (13) used to connect the arc extinguishing chamber main body (12) and the circuit breaker tank body (8) from the upper maintenance hole (10) of the circuit breaker tank body (8); The arc extinguishing chamber lifting tooling (2) can also be installed at the upper maintenance hole (10) of the circuit breaker tank body (8). After the arc extinguishing chamber lifting tooling (2) is installed on the upper maintenance hole (10) of the circuit breaker tank body (8), the arc extinguishing chamber lifting tooling (4) is used to lift up the arc extinguishing chamber main body (12) after the insulating pull rod main body (13) is lifted out; The arc extinguishing chamber entering and exiting the tank tooling (3) can be placed through the end maintenance hole (11) at one end of the circuit breaker tank body (8) and is used to move the arc extinguishing chamber main body (12) lifted by the arc extinguishing chamber lifting tooling (2) out of the circuit breaker tank body (8); The arc extinguishing chamber lifting tooling (4) is installed on one side of the circuit breaker tank body (8) and is used to hoist the arc extinguishing chamber main body (12) moved out by the arc extinguishing chamber entering and exiting the tank tooling (3) to the ground.

2. The lifting and disassembling system for overhauling the arc extinguishing chamber of the high-voltage tank-type sulfur hexafluoride circuit breaker according to claim 1, wherein: The insulating pull rod lifting tooling (1) includes a first flange (101). Four first columns (102) are fixedly arranged on the first flange (101) evenly along the circumferential direction. The tops of two of the first columns (102) facing each other are connected by a first cross bar (103), and the tops of the other two first columns (102) facing each other are connected by a first angle steel (104), and the position of the first angle steel (104) in the vertical direction is higher than that of the first cross bar (103); A fixed pulley (105) is installed directly below the middle position of the first cross bar (103). A manual winch (106) is installed on the outside of the top of one of the first columns (102). The free end of the steel wire rope on the manual winch (106) extends upward around the fixed pulley (105) and then extends downward in the vertical direction and is connected with a hook; A plurality of through first connection through holes (107) are arranged on the first flange (101) along the circumferential direction. The first flange (101) can be fixedly installed at the upper maintenance hole (10) of the circuit breaker tank body (8) by using bolts and nuts through the first connection through holes (107).

3. The lifting and disassembling system for overhauling the arc extinguishing chamber of the high-voltage tank-type sulfur hexafluoride circuit breaker according to claim 2, characterized in that: The arc extinguishing chamber lifting tooling (2) includes a second flange (21). Four second columns (22) are fixedly arranged on the second flange (21) evenly along the circumferential direction. The tops of two of the second columns (22) facing each other are connected by a second cross bar (23), and the tops of the other two second columns (22) facing each other are connected by a second angle steel (24), and the position of the second angle steel (24) in the vertical direction is higher than that of the second cross bar (23); A fixed electric hoist (25) is installed directly below the middle position of the second cross bar (23). A plurality of through second connection through holes (26) are provided along the circumference on the second flange (21), and the second flange (21) can also be fixedly installed at the upper inspection hole (10) of the circuit breaker tank body (8) by using bolts and nuts through the second connection through holes (26).

4. The hoisting and disassembling system for overhauling the arc extinguishing chamber of the high-pressure tank-type sulfur hexafluoride circuit breaker according to claim 1, wherein: The overall height of the arc extinguishing chamber lifting tooling (2) is less than the height of the insulating pull rod lifting tooling (1).

5. The hoisting and disassembling system for overhauling the arc extinguishing chamber of the high-voltage tank-type sulfur hexafluoride circuit breaker according to claim 3, wherein: The first angle steel (104) and the first cross bar (103) in the insulating pull rod lifting tooling (1) and the second angle steel (24) and the second cross bar (23) in the arc extinguishing chamber lifting tooling (2) are all fixedly connected together by bolts and nuts.

6. The lifting and disassembling system for overhauling the arc extinguishing chamber of the high-pressure tank-type sulfur hexafluoride circuit breaker according to claim 1, characterized in that: The arc extinguishing chamber entering and leaving the tank tooling (3) includes a guide rail (31). Two sets of sliding units (32) are installed below the guide rail (31) along its length direction. The guide rail (31) can freely slide along the circumferential direction in the circuit breaker tank body (8) through the two sets of sliding units (32). A moving trolley (33) is arranged in the guide rail (31), and the moving trolley (33) is slidably connected with the guide rail (31) through the guide wheels (34) on its side. One opposite side of one end of the guide rail (31) along the width direction is respectively fixedly connected with a mounting plate (35). Third connection through holes (36) are provided on the mounting plates (35), and the mounting plates (35) can be fixed at the end inspection hole (11) of the circuit breaker tank body (8) by using bolts and nuts through the third connection through holes (36).

7. The lifting and disassembling system for overhauling the arc extinguishing chamber of the high-voltage tank-type sulfur hexafluoride circuit breaker according to claim 6, characterized in that: The sliding unit (32) includes a bottom support main caster (321) and two side casters (322) symmetric about the bottom support main caster (321). An included angle of 15° is formed between the two side casters (322) and the bottom support main caster (321). After the arc extinguishing chamber entering and leaving the tank tooling (3) is placed in the circuit breaker tank body (8), the distances from the two side casters (322) to the center of the circuit breaker tank body (8) are equal to the distance from the bottom support main caster (321) to the center of the circuit breaker tank body (8).

8. The lifting and dismantling system for overhauling the arc extinguishing chamber of a high-voltage tank-type sulfur hexafluoride circuit breaker according to claim 7, characterized in that: The bottom support main casters (321) in the two sets of sliding units (32) are inclined towards the middle of the guide rail (31) along the length direction of the guide rail (31).

9. The hoisting and dismantling system for overhauling the arc extinguishing chamber of a high-pressure tank-type sulfur hexafluoride circuit breaker according to claim 1, characterized in that: The arc extinguishing chamber lifting tooling (4) includes an A-shaped long bracket (41) arranged on one side of the circuit breaker tank body (8). The bottom of the A-shaped long bracket (41) is fixedly installed on the ground. The top of the A-shaped long bracket (41) is fixedly connected with one end of a horizontal cross beam (42). A traveling electric hoist (43) is installed on the horizontal cross beam (42), and the traveling electric hoist (43) can freely move along the length direction of the horizontal cross beam (42).

10. The lifting and disassembling system for overhauling the arc extinguishing chamber of a high-pressure tank-type sulfur hexafluoride circuit breaker according to claim 9, wherein: One end of the horizontal cross beam (42) far from the A-shaped long bracket (41) is fixedly connected with an A-shaped short bracket (5). The lower end of the A-shaped short bracket (5) is fixedly connected with an anchor plate (6). The lower side of the anchor plate (6) is an arc-shaped structure matching the edge of the maintenance hole (11) at the end of the circuit breaker tank body (8). The arc-shaped end of the anchor plate (6) is provided with a plurality of fourth connection through holes (7). Through the fourth connection through holes (7), the anchor plate (6) can be fixed at the maintenance hole (11) at the end of the circuit breaker tank body (8) by using bolts and nuts.

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