Device and method for replacing GIS circuit breaker in narrow space

Abstract

The invention discloses a device and a method for replacing a GIS circuit breaker in a narrow space. The device comprises a translation carrying trolley, a synchronous jacking mechanism, an adjustable H-shaped displacement track and an anti-toppling mechanism, the adjusting type H-shaped displacement track is arranged below the GIS circuit breaker in the axis direction of the GIS circuit breaker, the translation carrying trolley is installed on the top of the adjusting type H-shaped displacement track in a sliding mode, the synchronous jacking mechanisms are symmetrically arranged at the two ends of the adjusting type H-shaped displacement track, and the anti-toppling mechanisms are arranged at the two ends of the GIS circuit breaker. During replacement, the replacement device is assembled at the bottom of the circuit breaker; connecting bolts of the GIS circuit breaker are dismantled; the circuit breaker is dropped to the translation carrying trolley; translating the old GIS circuit breaker to a hoisting position; translating the new circuit breaker to a mounting position; the new circuit breaker is jacked to an original height installation position, the connecting bolts are installed, and all the devices are dismantled to complete replacement work. The time for replacing the circuit breaker is shorter, the power failure time is shortened, the power supply stability is ensured, the operation is simpler and more convenient, and the operation safety is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of substation equipment maintenance and replacement, and particularly to a GIS circuit breaker replacement device and method in a narrow space. Background Art

[0002] In the operation and maintenance work of substations, the replacement of GIS (Gas Insulated Switchgear) circuit breakers is an important and complex task. There are many problems with traditional GIS circuit breaker replacement methods. For example, in the substation environment with narrow space and compact equipment layout, the operating space is extremely limited, making the replacement process extremely difficult. Moreover, traditional replacement methods often take a lot of time, not only increasing the power outage time and affecting the stability of power supply, but also bringing relatively high safety risks due to cumbersome operations. In addition, some traditional methods require the disassembly and assembly of busbars and related gas chambers, further increasing the workload and the risk of equipment damage. Therefore, there is an urgent need for a new type of GIS circuit breaker replacement equipment and method to solve the above problems. Summary of the Invention

[0003] In order to solve the technical problems existing in the above technologies, in view of this, it is necessary to provide a GIS circuit breaker replacement device in a narrow space.

[0004] A GIS circuit breaker replacement device in a narrow space includes a translation carrier trolley, a synchronous jacking mechanism, an adjustable H-shaped displacement track, and an anti-tipping mechanism; the adjustable H-shaped displacement track is arranged below the GIS circuit breaker along the axis direction of the GIS circuit breaker, the translation carrier trolley is slidably installed on the top of the adjustable H-shaped displacement track for moving the GIS circuit breaker, the synchronous jacking mechanism is symmetrically arranged at both ends of the adjustable H-shaped displacement track for supporting the GIS circuit breaker to descend or lift, and the anti-tipping mechanism is arranged at both ends of the GIS circuit breaker for ensuring the stability and precise positioning of the equipment during the translation process.

[0005] Preferably, the translation carrier trolley includes a frame and a support part arranged on the top of the frame; rollers capable of moving along the adjustable H-shaped displacement track are arranged at the bottom of the frame.

[0006] Preferably, the support part has an arc-shaped structure, and an anti-slip rubber pad is arranged on the contact surface between the support part and the GIS circuit breaker.

[0007] Preferably, the synchronous jacking mechanism includes an arc-shaped frame and a lifting part; the arc-shaped frame is arranged below the GIS circuit breaker, and the upper end of the lifting part is connected to the side of the arc-shaped frame, so that the arc-shaped frame can support the GIS circuit breaker to descend or lift when the lifting part moves up and down.

[0008] Preferably, the anti-tipping mechanism includes a connection end and a top support part; the connection end is installed at the end of the GIS circuit breaker, the upper end of the top support part is connected to the connection end, and the top support part can move up and down, and a universal wheel is provided at the lower end of the top support part.

[0009] It is also necessary to provide a method for replacing a GIS circuit breaker in a narrow space.

[0010] A method for replacing a GIS circuit breaker in a narrow space, which uses the above-mentioned replacement device for a GIS circuit breaker in a narrow space for replacement, includes the following steps: Step S1: Transfer the circuit breaker spare parts to the designated location on site in advance; recover the SF6 gas in the circuit breaker and current transformer, reduce the full pressure of the circuit breaker and current transformer chambers, and reduce the half pressure of the disconnector chambers on both sides of the circuit breaker. Step S2: Fix the portal support channel steel, and prop up the current transformer on the upper part of the circuit breaker to prevent the displacement of the current transformer during the removal and movement of the circuit breaker. Step S3: Select an appropriate number of adjustable H-shaped displacement tracks according to the site conditions for splicing, and use special square support modules to support the adjustable H-shaped displacement tracks to ensure that the height of the adjustable H-shaped displacement tracks meets the requirements and has good stability. Step S4: Install a set of synchronous jacking mechanisms on both sides of the bottom of the circuit breaker tank at a distance of 100 mm from the flange to ensure that the jacking mechanism just supports and bears the force on the bottom of the circuit breaker. Step S5: Install 2 sets of anti-tipping mechanisms on both sides of the circuit breaker, and tightly connect them to the side cover of the circuit breaker through the flange cover screws to ensure firm connection, and ensure that the lower end of the anti-tipping mechanism maintains a 30 mm safety distance from the support. Step S6: Install the translation carrier trolley in the adjustable H-shaped displacement tracks on both sides under the circuit breaker tank, and check its running flexibility. Step S7: The on-site maintenance personnel wear gas masks, remove the connection screws between the circuit breaker and the current transformer, and remove the connection screws of the circuit breaker support structure; conduct forced ventilation on site for 30 minutes, measure the SF6 gas content and oxygen content, and ensure that the safety standards are met before proceeding with subsequent operations. Step S8: Lower the circuit breaker onto the translation carrier trolley. Step S9: Use the translation carrier trolley device to translate the circuit breaker to the lifting position and then lift it off. Step S10: Place the new circuit breaker on the translation carrier trolley, and use the translation carrier trolley device to translate the new circuit breaker from the lifting position to the installation position. Step S11: Use the synchronous jacking mechanism to jack up the new circuit breaker from the translation carrier trolley device to the original height installation position. Step S12: The on-site maintenance personnel restore the connecting screws between the circuit breaker and the current transformer, and restore the connecting screws of the circuit breaker support structure; after the installation is completed, remove the synchronous jacking mechanism, the translation carrier trolley, the adjustable H-shaped displacement track, and the anti-tipping mechanism, clean the site, and complete the replacement work.

[0011] Preferably, the step S8 includes the following steps Start the synchronous jacking mechanism, control the synchronous jacking mechanism to descend through the intelligent electric control synchronizer, so that the circuit breaker slowly descends by 300 mm, and closely observe the state of the tank during the descent; Remove the conductor, continue to smoothly lower the circuit breaker until it completely lands on the translation carrier trolley and ensure reliable fixation.

[0012] Preferably, the step S9 includes the following steps According to the actual situation on site, extend the assembled adjustable H-shaped displacement track in a predetermined direction, paying attention to avoiding obstacles such as steps and cable trough boxes; Connect the electric thruster, remotely control the thruster to push the translation carrier trolley, or use manual assistance to push when necessary, and lift the circuit breaker with lifting equipment after translating it to the lifting position; if steering is required, raise the anti-tipping mechanism and laterally move the circuit breaker to achieve steering.

[0013] Preferably, the step S10 includes the following steps Remove the anti-tipping mechanism from the original circuit breaker and install it on the new circuit breaker. Lift the new circuit breaker onto the translation carrier trolley, and use the two electric thrusters on the adjustable H-shaped displacement track to remotely control the thruster to push to make the trolley move forward horizontally, or manual propulsion can also be used for horizontal translation, and translate the circuit breaker to the installation position; When the circuit breaker needs to turn, raise the anti-tipping mechanism and laterally move the circuit breaker to achieve the effect of circuit breaker turning.

[0014] Preferably, the step S11 includes the following steps Start the synchronous jacking mechanism, control the synchronous jacking mechanism to rise through the intelligent electric control synchronizer, so that the new circuit breaker slowly rises by 300 mm, and ensure the stability of the tank during the rise; Install the conductor, continue to raise the circuit breaker until it reaches the original height installation position and is accurately positioned.

[0015] Compared with the prior art, a GIS circuit breaker replacement device and method provided by the present invention have the following advantages: 1. High efficiency and convenience: The electric lifting and remote control pushing functions realize the rapid lifting and precise positioning of the circuit breaker tank body, and the manual translation function assists in fine adjustment, greatly shortening the replacement time and improving work efficiency.

[0016] 2. Strong adaptability: Modular design allows each device to flexibly adjust its size and configuration according to the on-site space, meeting the operation requirements under different terrain conditions.

[0017] 3. Safe and reliable: Equipped with multiple safety protection devices such as limit protection and emergency stop. The double-safety hand-cranked cross jack prevents the circuit breaker from tipping over, ensuring operation safety.

[0018] 4. Easy to operate: Remote control operation, user-friendly interface, easy to learn and master, reducing the labor intensity of operators.

[0019] 5. Economical and practical: There is no need to disassemble and assemble the busbars and related gas chambers, reducing power outage time and labor costs, with significant economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram when the present invention is used in assembly with a GIS circuit breaker.

[0022] Figure 2 For the present invention Figure 1 is a schematic side view structure diagram.

[0023] Figure 3 For the present invention Figure 1 is a schematic structure diagram from another angle.

[0024] In the figure: translation carrier trolley 01, frame 11, support part 12, roller 13, synchronous jacking mechanism 02, arc-shaped frame 21, lifting part 22, adjustable H-shaped displacement track 03, anti-tipping mechanism 04, connection end 41, top support part 42, electric thruster 05, GIS circuit breaker 06. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner", "lower", etc. indicating the orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0027] Please refer to Figures 1 to 3 , in one embodiment, the present invention provides a replacement device for a GIS circuit breaker in a narrow space, including a translation carrier cart 01, a synchronous lifting mechanism 02, an adjustable H-shaped displacement track 03, and an anti-tipping mechanism 04; the adjustable H-shaped displacement track 03 is disposed below the GIS circuit breaker 06 along the axial direction of the GIS circuit breaker 06, and the translation carrier cart 01 is slidably installed on the top of the adjustable H-shaped displacement track 03 for moving the GIS circuit breaker 06. The synchronous lifting mechanism 02 is symmetrically arranged at both ends of the adjustable H-shaped displacement track 03 for supporting the GIS circuit breaker 06 to descend or lift, and the anti-tipping mechanism 04 is arranged at both ends of the GIS circuit breaker 06 for ensuring the stability and precise positioning of the device during the translation process.

[0028] Among them, the translation carrier cart 01 includes a frame 11 and a support portion 12 arranged on the top of the frame 11; rollers 13 capable of moving along the adjustable H-shaped displacement track 03 are arranged at the bottom of the frame 11.

[0029] Among them, the support portion 12 has an arc-shaped structure, and an anti-slip rubber pad is arranged on the contact surface between the support portion 12 and the GIS circuit breaker 06.

[0030] Among them, the synchronous lifting mechanism 02 includes an arc-shaped frame 21 and a lifting portion 22; the arc-shaped frame 21 is arranged below the GIS circuit breaker 06, and the upper end of the lifting portion 22 is connected to the side of the arc-shaped frame 21, so that the arc-shaped frame 21 can support the GIS circuit breaker 06 to descend or lift when the lifting portion 22 moves up and down. The lifting portion 22 can be an electric telescopic rod, a hydraulic telescopic rod, etc.

[0031] Among them, the anti-tipping mechanism 04 includes a connection end 41 and a top support portion 42; the connection end 41 is installed at the end of the GIS circuit breaker, the upper end of the top support portion 42 is connected to the connection end 41, and the top support portion 42 can move up and down. A universal wheel 43 is arranged at the lower end of the top support portion 42. The top support portion 42 can be an electric telescopic rod, a hydraulic telescopic rod, etc.

[0032] In one embodiment, the present invention provides a method for replacing a GIS circuit breaker in a narrow space, which uses the above-mentioned replacement device for a GIS circuit breaker in a narrow space for replacement, and includes the following steps. Step S1: Transfer the spare circuit breaker to the designated location on site in advance; recover the SF6 gas in the circuit breaker and current transformer, reduce the full pressure of the circuit breaker and current transformer chambers, and reduce the half pressure of the disconnector chambers on both sides of the circuit breaker. Step S2: Fix the portal support channel steel, lift the current transformer above the circuit breaker to prevent displacement of the current transformer during the removal and movement of the circuit breaker. Step S3: Select an appropriate number of adjustable H-shaped displacement tracks according to the site conditions for splicing, and use special square support modules to support the adjustable H-shaped displacement tracks to ensure that the height of the adjustable H-shaped displacement tracks meets the requirements and has good stability. Step S4: Install a set of synchronous jacking mechanisms on both sides of the bottom of the circuit breaker tank, 100 mm away from the flange, to ensure that the jacking mechanisms just support and bear the force on the bottom of the circuit breaker. Step S5: Install 2 sets of anti-tipping mechanisms on both sides of the circuit breaker, and tightly connect them to the side cover of the circuit breaker through the flange cover screws to ensure firm connection, and ensure that the lower end of the anti-tipping mechanism maintains a 30-mm safety distance from the support. Step S6: Install the translation carrier trolley in the adjustable H-shaped displacement tracks on both sides under the circuit breaker tank, and check its running flexibility. Step S7: The on-site maintenance personnel wear gas masks, remove the connection screws between the circuit breaker and the current transformer, and remove the connection screws of the circuit breaker support structure; conduct forced ventilation on site for 30 minutes, measure the SF6 gas content and oxygen content, and ensure that the safety standards are met before proceeding with subsequent operations. Step S8: Lower the circuit breaker onto the translation carrier trolley. Step S9: Use the translation carrier trolley device to translate the circuit breaker to the lifting position and then lift it off. Step S10: Place the new circuit breaker on the translation carrier trolley, and use the translation carrier trolley device to translate the new circuit breaker from the lifting position to the installation position. Step S11: Use the synchronous jacking mechanism to jack up the new circuit breaker from the translation carrier trolley device to the original height installation position. Step S12: The on-site maintenance personnel restore the connection screws between the circuit breaker and the current transformer, and restore the connection screws of the circuit breaker support structure; after installation, remove the synchronous jacking mechanism, the translation carrier trolley device, the adjustable H-shaped displacement track, and the anti-tipping mechanism, clean up the site, and complete the replacement work.

[0033] Specifically, Step S8 includes the following steps. Start the synchronous jacking mechanism, control the synchronous jacking mechanism to lower through the intelligent electronic control synchronizer, so that the circuit breaker slowly descends 300 mm, and closely observe the state of the tank during the descent. Remove the conductor and continue to lower the circuit breaker smoothly until it completely lands on the translation carrier trolley and ensure reliable fixation.

[0034] Specifically, step S9 includes the following steps. According to the actual on-site situation, extend the assembled adjustable H-shaped displacement track in a predetermined direction, paying attention to avoiding obstacles such as steps and cable trough boxes. Connect the electric thruster, remotely operate the thruster to push the translation carrier trolley, or use manual assistance for propulsion when necessary. After translating the circuit breaker to the hoisting position, use hoisting equipment to lift it off. If steering is required, raise the anti-tipping mechanism and laterally move the circuit breaker to achieve steering.

[0035] Specifically, step S10 includes the following steps. Remove the anti-tipping mechanism from the original circuit breaker and install it on the new circuit breaker. Lift the new circuit breaker onto the translation carrier trolley. Use the two electric thrusters on the adjustable H-shaped displacement track to remotely operate the thrusters to push the trolley forward for translation, or manual propulsion can also be used for translation. Translate the circuit breaker to the installation position. When the circuit breaker needs to turn, raise the anti-tipping mechanism and laterally move the circuit breaker to achieve the effect of circuit breaker turning.

[0036] Specifically, step S11 includes the following steps. Start the synchronous jacking mechanism, control the synchronous jacking mechanism to rise through the intelligent electronic control synchronizer, so that the new circuit breaker slowly rises by 300 mm, and ensure the stability of the tank body during the rising process. Install the conductor and continue to raise the circuit breaker until it reaches the original height installation position and is accurately positioned.

[0037] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited by this. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the invention.

Claims

1. A replacement device for GIS circuit breakers in narrow spaces, characterized in that: It includes a translation carrier trolley, a synchronous jacking mechanism, an adjustable H-shaped displacement track, and an anti-tipping mechanism; the adjustable H-shaped displacement track is arranged below the GIS circuit breaker along the axis direction of the GIS circuit breaker, the translation carrier trolley is slidably installed on the top of the adjustable H-shaped displacement track for moving the GIS circuit breaker, the synchronous jacking mechanism is symmetrically arranged at two ends of the adjustable H-shaped displacement track for supporting the GIS circuit breaker to descend or lift, and the anti-tipping mechanism is arranged at two ends of the GIS circuit breaker for ensuring the stability and precise positioning of the equipment during the translation process.

2. The replacement device for GIS circuit breakers in narrow spaces according to claim 1, wherein: The translation carrier trolley includes a frame and a support part arranged on the top of the frame; rollers capable of moving along the adjustable H-shaped displacement track are arranged at the bottom of the frame.

3. The narrow-space GIS circuit breaker replacement device according to claim 2, characterized in that: The support part is in an arc structure, and an anti-slip rubber pad is arranged on the contact surface between the support part and the GIS circuit breaker.

4. The replacement device for GIS circuit breaker in a narrow space according to claim 2, wherein: The synchronous jacking mechanism includes an arc-shaped frame and a lifting part; the arc-shaped frame is arranged below the GIS circuit breaker, and the upper end of the lifting part is connected to the side of the arc-shaped frame so that the arc-shaped frame can support the GIS circuit breaker to descend or lift when the lifting part moves up and down.

5. The narrow-space GIS circuit breaker replacement device according to claim 4, characterized in that: The anti-tipping mechanism includes a connection end and a top support part; the connection end is installed at the end of the GIS circuit breaker, the upper end of the top support part is connected to the connection end, and the top support part can move up and down, and universal wheels are arranged at the lower end of the top support part.

6. A method for replacing a GIS circuit breaker in a narrow space, which uses the GIS circuit breaker replacement device in any one of claims 1-5 for replacement, and is characterized in that: It includes the following steps Step S1: Transfer the circuit breaker spare parts to the designated location at the site in advance; recover the SF6 gas in the circuit breaker and current transformer, reduce the full pressure of the circuit breaker and current transformer gas chambers, and reduce the half pressure of the disconnector gas chambers on both sides of the circuit breaker. Step S2: Fix the portal support channel steel, lift the current transformer on the upper part of the circuit breaker to prevent the current transformer from being displaced during the removal and movement of the circuit breaker. Step S3: Select an appropriate number of adjustable H-shaped displacement tracks according to the site conditions for splicing, and use special square support modules to support the adjustable H-shaped displacement track to ensure that the height of the adjustable H-shaped displacement track meets the requirements and has good stability. Step S4: Install a set of synchronous jacking mechanisms on both sides of the bottom of the circuit breaker tank at a distance of 100 mm from the flange to ensure that the jacking mechanism just supports and bears the force on the bottom of the circuit breaker. Step S5: Install 2 sets of anti-tipping mechanisms on both sides of the circuit breaker, and tightly connect them to the side cover of the circuit breaker through the flange big cover screws to ensure firm connection, and ensure that the lower end of the anti-tipping mechanism maintains a 30 mm safety distance from the support. Step S6: Install the translation carrier trolley in the adjustable H-shaped displacement tracks on both sides below the circuit breaker tank, and check its operation flexibility. Step S7: The on-site maintenance personnel wear gas masks, remove the connection screws between the circuit breaker and the current transformer, and remove the connection screws of the circuit breaker support structure; conduct forced ventilation on-site for 30 minutes, measure the SF6 gas content and oxygen content, and ensure that the safety standards are met before proceeding with subsequent operations. Step S8: Lower the circuit breaker onto the translation carrier trolley. Step S9: Use the translation carrier trolley device to translate the circuit breaker to the hoisting position and then lift it off. Step S10: Place the new circuit breaker on the translation carrier trolley, and use the translation carrier trolley device to translate the new circuit breaker from the hoisting position to the installation position; Step S11: Use the synchronous jacking mechanism to jack up the new circuit breaker from the translation carrier trolley device to the original height installation position; Step S12: The on-site maintenance personnel restore the connection screws between the circuit breaker and the current transformer, and restore the connection screws of the circuit breaker support structure; after the installation is completed, remove the synchronous jacking mechanism, the translation carrier trolley device, the adjustable H-shaped displacement track, and the anti-tipping mechanism, clean the site, and complete the replacement work.

7. The method for replacing a GIS circuit breaker in a narrow space as claimed in claim 6, wherein: The said step S8 includes the following steps, Start the synchronous jacking mechanism, control the synchronous jacking mechanism to descend through the intelligent electric control synchronizer, so that the circuit breaker slowly descends 300 mm, and closely observe the state of the tank during the descent; Remove the conductor, continue to smoothly lower the circuit breaker until it completely lands on the translation carrier trolley and ensure reliable fixation.

8. The method for replacing a GIS circuit breaker in a narrow space according to claim 6, wherein: The said step S9 includes the following steps, According to the actual situation on site, extend the assembled adjustable H-shaped displacement track in the predetermined direction, and pay attention to avoiding obstacles such as steps and cable trough boxes; Connect the electric thruster, push the translation carrier trolley by remotely controlling the thruster, or use manual assistance to push when necessary, translate the circuit breaker to the hoisting position and then lift it off with hoisting equipment; if steering is required, raise the anti-tipping mechanism and laterally move the circuit breaker to achieve steering.

9. The method for replacing a narrow-space GIS circuit breaker according to claim 6, characterized in that: The said step S10 includes the following steps, Remove the anti-tipping mechanism from the original circuit breaker and install it on the new circuit breaker, hoist the new circuit breaker onto the translation carrier trolley, and use the two electric thrusters on the adjustable H-shaped displacement track to push forward the trolley by remotely controlling the thruster, or manual propulsion can also be used for translation, and translate the circuit breaker to the installation position; When the circuit breaker needs to turn, raise the anti-tipping mechanism and laterally move the circuit breaker to achieve the effect of circuit breaker turning.

10. The method for replacing a GIS circuit breaker in a narrow space according to claim 6, characterized in that: The said step S11 includes the following steps, Start the synchronous jacking mechanism, control the synchronous jacking mechanism to rise through the intelligent electric control synchronizer, so that the new circuit breaker slowly rises 300 mm, and ensure the stability of the tank during the rise; Install the conductor, continue to raise the circuit breaker until it reaches the original height installation position and is accurately positioned.

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