Tank-type circuit breaker overall replacement device and method

Abstract

The invention discloses a tank-type circuit breaker overall replacement device and method. The tank-type circuit breaker overall replacement device comprises an opening frame, a sliding steel beam and an adjustable hoop. The two ends of the sliding steel beam are connected with the opening frame in a sliding mode, and the adjustable hoop is fixedly installed on the sliding steel beam. The adjustable hoop comprises a fixing plate, an upper clamping ring and a fixing bolt, the bottom of the fixing plate is fixedly connected with the top of the sliding steel beam, fixing screw holes are formed in the two ends of the upper clamping ring, the top of the fixing plate is provided with the adjustable screw rods matched with the fixing screw holes in the two ends of the upper clamping ring, and the adjustable screw rods are connected with the fixing bolt. The upper clamping ring is detachably connected with the fixing plate through the fixing screw holes and the adjustable screw rods. The invention fills the blank of integral hoisting and replacement of the circuit breaker under the complex conditions that the safety distance between adjacent electrified equipment is insufficient and the adjacent electrified equipment cannot be powered off synchronously when the tank-type circuit breaker is hoisted, and has the characteristics of simple structure, convenience in method, convenience in operation and high integral hoisting and replacement efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and more particularly to an integral replacement device and method for a tank type circuit breaker. Background Art

[0002] Tank circuit breakers are extremely important equipment in power systems. Their safe and stable operation is directly related to the reliability and safety of power system operation. In power systems, tank circuit breakers can not only control the on and off of current, but also perform fast automatic reclosing operations. When a power grid fails, they can restore the normal operation of the line in time, thereby protecting the safety of the power grid. Tank circuit breakers are widely used in ultra-high voltage (330kV, 500kV, 750kV) and ultra-high voltage (1000kV) power systems.

[0003] When the tank circuit breaker has internal discharge, fault repair, hidden danger treatment, equipment technical transformation, etc., it is necessary to replace the equipment. Due to the large size of the overall ultra-high voltage tank circuit breaker equipment and the casing, considering the technical standards for the connection of the tank circuit breaker body and the casing, and the safety distance between the crane arm and the adjacent live parts during lifting, the traditional lifting and replacement method is to first remove the old circuit breaker casing and the old circuit breaker body by crane, and then lift the new circuit breaker to the base and install the new circuit breaker casing, and then perform vacuuming, SF6 gas replenishment, conventional tests, withstand voltage and partial discharge tests, etc.

[0004] According to the requirements of the State Grid Corporation Electric Power Safety Work Regulations (Substation Part) (hereinafter referred to as the "Regulations"), the crane boom and adjacent live parts must meet the safety distance when traditionally lifting and replacing tank circuit breakers (1000kV not less than 10.0 meters, 500kV not less than 8.5 meters, 330kV not less than 7.0 meters). Since the top of the casing in the tank circuit breaker body and accessories is the highest from the ground, the safety distance between the crane boom and adjacent live parts is the most stringent when removing and installing the casing.

[0005] The publication number is CN114024236A, and the name is a circuit breaker replacement device, which includes: a mounting body; a moving mechanism, which is connected to the mounting body; a support member, which is provided with a matching portion, and the matching portion is used to interfere with the circuit breaker; a lifting assembly, the support member is movably connected to the mounting body through the lifting assembly, and the lifting assembly drives the moving mechanism to move along the lifting direction of the lifting assembly.

[0006] The publication number is CN112382968A, and the name is a device for replacing a circuit breaker mechanism without power outage. The device comprises a main body, a circuit breaker mechanism and a manipulator; the main body is provided with a transmission box; the transmission box is provided with an outer crank arm, the head end of the outer crank arm is provided on the outer surface of the transmission box, and the head end of the outer crank arm has a motion characteristic of rotating along the axis of the head end of the outer crank arm; the outer crank arm and the transmission box are respectively provided with fixing holes, and the outer crank arm includes a locking pin; based on the fixing hole and the locking pin; the circuit breaker mechanism is provided with a transmission rod, the head end of the transmission rod is connected to the circuit breaker mechanism, the end of the transmission rod is connected to the end of the outer crank arm, and based on the connection between the outer crank arm and the transmission rod, the circuit breaker mechanism is connected to the main body; the manipulator is used to transfer and install the circuit breaker mechanism to the main body.

[0007] However, when the safety distance between the crane boom and the adjacent live parts does not meet the regulations during the removal and installation of the bushing, the lifting operation cannot be carried out and the adjacent live equipment needs to be shut down. When the adjacent live equipment of the tank circuit breaker cannot be shut down at the same time, the replacement plan of the tank circuit breaker will be postponed or changed, which will seriously affect the demand for equipment replacement and endanger the stable operation of the ultra-high voltage power grid.

[0008] Therefore, how to provide a device and method for overall replacement of a tank type circuit breaker, when the lifting of the tank type circuit breaker casing does not meet the safety distance required by the regulations, by replacing the special device as a whole, increasing the distance between the crane arm and the adjacent live parts, and realizing the overall lifting of the circuit breaker and the casing is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0009] In view of this, the present invention provides a device and method for replacing a tank type circuit breaker as a whole, aiming to solve the problem that when the safety distance between the crane arm and the adjacent live parts does not meet the regulations during the removal and installation of the casing, the lifting operation cannot be carried out and the adjacent live equipment needs to be shut down. When the adjacent live equipment of the tank type circuit breaker cannot be shut down at the same time, the replacement plan time of the tank type circuit breaker will be postponed or changed, which will seriously affect the equipment replacement demand and endanger the technical problem of stable operation of the ultra-high voltage power grid.

[0010] In order to achieve the above object, the present invention adopts the following technical solution:

[0011] A tank type circuit breaker integral replacement device, comprising: an opening frame, a sliding steel beam, and an adjustable clamp;

[0012] The two ends of the sliding steel beam are slidably connected to the open frame, and the adjustable hoop is fixedly installed on the sliding steel beam;

[0013] The adjustable clamp includes a fixing plate, an upper clamping ring and a fixing bolt. The bottom of the fixing plate is fixedly connected to the top of the sliding steel beam. Fixing screw holes are provided at both ends of the upper clamping ring. The top of the fixing plate is provided with the adjustable screw rod that is adapted to the fixing screw holes at both ends of the upper clamping ring. The upper clamping ring is detachably connected to the fixing plate through the fixing screw holes and the adjustable screw rod.

[0014] Furthermore, the open frame includes a left side frame, a right side frame, a tail frame, a connecting plate, and a small lifting ear. One end of the left side frame is fixedly connected to the tail frame via a connecting plate, and one end of the right side frame is fixedly connected to the tail frame via a connecting plate. The small lifting ears are evenly installed at both ends of the left side frame and the right side frame for lifting and transporting the open frame via the small lifting ears.

[0015] Furthermore, the sliding steel beam includes an opening plate, a large lifting lug and a beam body, the opening plates are fixedly installed at both ends of the beam body, the beam body is slidably connected to the opening frame through the opening plates, and the large lifting lugs are evenly fixedly installed at both ends of the beam body, and are used to directly or indirectly lift and transport the tank type circuit breaker through the large lifting lugs.

[0016] Furthermore, a plurality of fixing holes are provided on the left side frame and the right side frame, and the opening plate is position-limitedly connected to the left side frame and the right side frame through the fixing holes.

[0017] Furthermore, a monitoring card point is provided on the upper clamp, and the monitoring card point is used to install an online monitoring device to obtain data during the overall replacement process of the tank circuit breaker.

[0018] Furthermore, a lower clamping ring is provided on the fixing plate, and the lower clamping ring and the upper clamping ring fix the tank type circuit breaker body.

[0019] A method for replacing a tank circuit breaker as a whole comprises the following steps: removing a fixing plate of a sliding steel beam from fixing holes of a left frame and a right frame, removing an upper clamping ring of an adjustable clamping ring from a fixing screw hole, installing the sliding steel beam and the upper clamping ring from the upper part and the lower part of the tank circuit breaker body respectively, ensuring fastening with the tank circuit breaker body through an adjustable screw and a fixing screw hole, adjusting the overall center of gravity balance point of the tank circuit breaker by selecting fixing holes on an opening plate and a left frame and a right frame, hoisting and transporting the opening frame through a small hoisting lug, and hoisting and transporting the tank circuit breaker directly or indirectly through a large hoisting lug.

[0020] Furthermore, the left and right frames are hoisted to a suitable horizontal position through the small lifting lugs, and connected to the tail frame through the connecting plate. When in use, the assembled open frame is hoisted to a specified horizontal position through the small lifting lugs.

[0021] Furthermore, the sliding steel beam is lifted onto the assembled open frame through the large lifting lug, and connected to the left frame and the right frame of the open frame through the opening plate. Appropriate fixing holes are selected according to tank circuit breakers of different sizes to adjust the overall center of gravity balance point of the tank circuit breaker. When in use, the assembled sliding steel beam and the open frame are lifted to a specified horizontal position as a whole through the large lifting lug.

[0022] Furthermore, when in use, the adjustable screw of the sliding steel beam is removed from the fixed screw hole, the upper clamping ring and the monitoring card point are taken out, the assembled sliding steel beam and the open frame are lifted to the bottom of the tank type circuit breaker through the large lifting ear, the upper clamping ring and the monitoring card point are installed on the top of the tank type circuit breaker, the fixed screw hole and the adjustable screw are connected to ensure that the tank type circuit breaker is firmly connected to the upper clamping ring of the adjustable clamp and the lower clamping ring of the sliding steel beam.

[0023] The above technical solution includes at least the following technical effects:

[0024] It can be seen from the above technical solutions that the present invention discloses a device and method for replacing a tank type circuit breaker as a whole. Compared with the prior art, the present invention can replace the circuit breaker as a whole under complex conditions such as insufficient safety distance between adjacent live equipment and inability to shut down adjacent live equipment at the same time when the tank type circuit breaker is hoisted. In addition, online monitoring of the hoisting of the tank type circuit breaker is provided to ensure that the hoisting process meets the relevant technical standards for the connection of the tank type circuit breaker body and casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 The present invention is a schematic structural diagram of a front view of a tank type circuit breaker integral replacement device.

[0027] Figure 2 The present invention is a schematic structural diagram of a front view of a tank type circuit breaker integral replacement device.

[0028] Figure 3 The present invention is a structural schematic diagram of a tank circuit breaker overall replacement device test.

[0029] Figure 4 The present invention is a schematic diagram of the structure of a tank type circuit breaker overall replacement device from a top view.

[0030] Figure 5 The present invention is a schematic flow chart of a method for integrally replacing a tank type circuit breaker.

[0031] Among them, 1 is an open frame, 2 is a sliding steel beam, 3 is an adjustable clamp, 11 is a left frame, 12 is a right frame, 13 is a tail frame, 14 is a connecting plate, 15 is a small lifting ear, 16 is a fixing hole, 21 is an opening plate, 22 is a large lifting ear, 23 is a fixing plate, 24 is a lower clamping ring, 25 is an adjustable screw, 26 is a beam body, 31 is an upper clamping ring, 32 is a fixing screw hole, and 33 is a monitoring card point. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See attached Figure 1-5 , the embodiment of the present invention discloses a tank type circuit breaker integral replacement device, comprising: an opening frame 1, a sliding steel beam 2, and an adjustable clamp 3;

[0034] Both ends of the sliding steel beam 2 are slidably connected to the open frame 1, and the adjustable clamp 3 is fixedly installed on the sliding steel beam 2;

[0035] The adjustable clamp 3 includes a fixing plate 23, an upper clamping ring 31 and a fixing bolt 32. The bottom of the fixing plate 23 is fixedly connected to the top of the sliding steel beam 2. Fixing screw holes 32 are provided at both ends of the upper clamping ring 31. An adjustable screw 25 adapted to the fixing screw holes 32 at both ends of the upper clamping ring 31 is provided at the top of the fixing plate 23. The upper clamping ring 31 is detachably connected to the fixing plate 23 through the fixing screw holes 32 and the adjustable screw 25.

[0036] To further optimize the above technical solution, the open frame 1 includes a left side frame 11, a right side frame 12, a tail frame 13, a connecting plate 14, and a small lifting ear 15. One end of the left side frame 11 is fixedly connected to the tail frame 13 through the connecting plate 14, and one end of the right side frame 12 is fixedly connected to the tail frame 13 through the connecting plate 14. Small lifting ears 15 are evenly installed at both ends of the left side frame 11 and the right side frame 12 for lifting and transporting the open frame 1 through the small lifting ears 15.

[0037] To further optimize the above technical solution, the sliding steel beam 2 includes an opening plate 21, a large lifting lug 22 and a beam body 26. The opening plates 21 are fixedly installed at both ends of the beam body 26. The beam body 26 is slidably connected to the opening frame 1 through the opening plates 21. The large lifting lugs 22 are evenly fixedly installed at both ends of the beam body 26, and are used to directly or indirectly lift and transport the tank type circuit breaker through the large lifting lugs 22.

[0038] To further optimize the above technical solution, a plurality of fixing holes 16 are provided on the left frame 11 and the right frame 12 , and the opening plate 21 is connected to the left frame 11 and the right frame 12 in a limiting manner through the fixing holes 16 .

[0039] In order to further optimize the above technical solution, a monitoring card point 33 is provided on the upper clamp 31, and the monitoring card point 33 is used to install an online monitoring device to obtain data during the overall replacement process of the tank circuit breaker.

[0040] In order to further optimize the above technical solution, a lower clamping ring 24 is provided on the fixing plate 23, and the lower clamping ring 24 and the upper clamping ring 31 fix the tank type circuit breaker body.

[0041] A method for replacing a tank circuit breaker as a whole is disclosed. The fixing plate 23 of the sliding steel beam 2 is removed from the fixing holes 16 of the left frame 11 and the right frame 12, the upper clamping ring 31 of the adjustable clamping ring 3 is removed from the fixing screw hole 32, the sliding steel beam 2 and the upper clamping ring 31 are respectively installed from the upper and lower parts of the tank circuit breaker body, the adjustable screw 25 and the fixing screw hole 32 are used to ensure the connection and fastening with the tank circuit breaker body, the overall center of gravity balance point of the tank circuit breaker is adjusted by selecting the fixing holes 16 on the opening plate 21 and the left frame 11 and the right frame 12, the opening frame 1 is hoisted and transported through the small lifting ear 15, and the tank circuit breaker is directly or indirectly hoisted and transported through the large lifting ear 22.

[0042] To further optimize the above technical solution, the left side frame 11 and the right side frame 12 are hoisted to a suitable horizontal position through the small lifting lug 15, and connected to the tail frame 13 through the connecting plate 14. When in use, the assembled opening frame 1 is hoisted to a specified horizontal position through the small lifting lug 15.

[0043] In order to further optimize the above technical solution, the sliding steel beam 2 is lifted onto the assembled open frame 11 through the large lifting lug 22, and connected to the left frame 11 and the right frame 12 of the open frame 1 through the opening plate 21. Suitable fixing holes 16 are selected according to tank circuit breakers of different sizes to adjust the overall center of gravity balance point of the tank circuit breaker. When in use, the assembled sliding steel beam 2 and the open frame 1 are lifted as a whole to a specified horizontal position through the large lifting lug 22.

[0044] To further optimize the above technical solution, when in use, the adjustable screw 25 of the sliding steel beam 2 is removed from the fixed screw hole 32, the upper clamping ring 31 and the monitoring card point 33 are taken out, and the assembled sliding steel beam 2 and the open frame 1 are lifted to the bottom of the tank circuit breaker through the large lifting ear 22, and the upper clamping ring 31 and the monitoring card point 33 are installed on the top of the tank circuit breaker. The fixed screw hole 32 and the adjustable screw 25 are connected to ensure that the tank circuit breaker is firmly connected to the upper clamping ring 31 of the adjustable clamp 3 and the lower clamping ring 24 of the sliding steel beam 2.

[0045] A device and method for replacing a tank type circuit breaker as a whole, comprising an open frame 1, a sliding steel beam 2, and an adjustable clamp 3; the sliding steel beam 2 is connected to the left frame 12 and the right frame 13 of the open frame 1 through an open plate 21, and the sliding steel beam 2 is connected to the upper clamp 31 of the adjustable clamp 3 through a fixed plate 23. The fixing holes 16 are evenly arranged on the left frame 11 and the right frame 12, and the opening plate 21 can select different fixing holes 16 for connection as needed, and the tail frame 13 is connected to the left frame 11 and the right frame 12 through a connecting plate 14. The structure is simple, and the upper clamp 31 and the monitoring card point 33 can be taken out by removing the adjustable screw 25 through the fixing screw hole 32; the monitoring card point 33 is removed from the upper clamp 31, and the required online monitoring device is installed. The operation is simple, the transportation is convenient, and the overall replacement efficiency of the tank type circuit breaker is high.

[0046] The open frame 1 includes a left frame 11, a right frame 12, a tail frame 13, a connecting plate 14, a small lifting lug 15 and a fixing hole 16. The fixing holes 16 are evenly arranged on the left frame 11 and the right frame 12. The tail frame 13 is connected to the left frame 11 and the right frame 12 through the connecting plate 14. The structure is simple. Before use, the left frame 11 and the right frame 12 are lifted to a suitable horizontal position through the small lifting lug 15, and the tail frame 13 is connected to the connecting plate 14, which is convenient for assembly. When in use, the assembled open frame 1 is lifted to a specified horizontal position through the small lifting lug 15, which is convenient and labor-saving for transportation.

[0047] The sliding steel beam 2 includes an opening plate 21, a large lifting lug 22, a fixing plate 23, a lower clamping ring 24, and an adjustable screw 25. The structure is simple. Before use, the sliding steel beam 2 is lifted to the assembled opening frame 1 through the large lifting lug 22, and connected to the left frame 11 and the right frame 12 of the opening frame 1 through the opening plate 21. Appropriate fixing holes 16 can be selected according to tank circuit breakers of different sizes to adjust the overall center of gravity balance point of the tank circuit breaker. When in use, the assembled sliding steel beam 2 and the opening frame 1 are lifted to a specified horizontal position as a whole through the large lifting lug 22, which is convenient and labor-saving to transport.

[0048] The adjustable clamp 3 includes an upper clamp ring 31, a fixed screw hole 32 and a monitoring card point 33. The structure is simple. When in use, the adjustable screw 25 of the sliding steel beam 2 is removed from the fixed screw hole 32, and the upper clamp ring 31 and the monitoring card point 33 are taken out. The assembled sliding steel beam 2 and the open frame 1 are hoisted to the bottom of the tank circuit breaker through the large lifting ear 22, and the upper clamp ring 31 and the monitoring card point 33 are installed on the top of the tank circuit breaker. The fixed screw hole 32 and the adjustable screw 25 are connected to ensure that the tank circuit breaker is firmly connected to the upper clamp ring 31 of the adjustable clamp 3 and the lower clamp ring 24 of the sliding steel beam 2. The tank circuit breaker is hoisted as a whole through the large lifting ear 22, which is simple and convenient to operate and highly efficient.

[0049] The monitoring card point 33 can be installed with an online monitoring device to monitor the data during the overall replacement of the tank circuit breaker. The structure is simple. Before use, the monitoring card point 33 is removed from the upper clamp ring 31 and the required online monitoring device is installed. When in use, the monitoring card point 33 equipped with the online monitoring device is installed on the upper clamp ring 31, which is simple and convenient to operate and highly efficient.

[0050] 1. Disassembly and installation preparation

[0051] Disassemble the fixing plate and the upper clamping ring: First, use appropriate tools to gently remove the fixing plate 23 of the sliding steel beam 2 from the fixing holes 16 of the left frame 11 and the right frame 12. Then, unscrew and remove the upper clamping ring 31 of the adjustable clamp 3 from the fixing screw hole 32 to prepare for subsequent assembly work.

[0052] Selecting fixing holes: Before assembling the sliding steel beam 2, it is necessary to select a suitable opening plate 21 for connection with the fixing holes 16 on the left frame 11 and the right frame 12 according to the specific size and weight of the tank circuit breaker. This step is crucial for adjusting the overall center of gravity balance point of the tank circuit breaker to ensure its stability during transportation and use.

[0053] 2. Assembly and transportation of opening frames

[0054] Assembling the opening frame: The left frame 11 and the right frame 12 are lifted to a suitable horizontal position by the small lifting lugs 15, and they are firmly connected to the rear frame 13 by the connecting plate 14, so as to assemble a complete opening frame 1. This step requires ensuring that the connection between the various components is tight and firm to avoid loosening or falling off during transportation.

[0055] Transporting the opening frame: Use the small lifting lugs 15 to lift the assembled opening frame 1 to a specified horizontal position. During the transport process, a steady and uniform moving speed needs to be maintained to avoid unnecessary damage or deformation to the opening frame 1.

[0056] 3. Assembly and transportation of sliding steel beams and adjustable clamps

[0057] Assembling the sliding steel beam: The sliding steel beam 2 is hoisted onto the assembled opening frame 1 through the large lifting lug 22, and connected to the left frame 11 and the right frame 12 of the opening frame 1 using the opening plate 21. During the connection process, it is necessary to ensure that the gap between the sliding steel beam 2 and the opening frame 1 is uniform and moderate to ensure its stability and reliability.

[0058] Transfer the whole structure: Use the large lifting lug 22 to lift the assembled sliding steel beam 2 and the opening frame 1 to the specified horizontal position. During the transfer process, it is also necessary to maintain a stable and uniform moving speed and pay close attention to the stability and safety of the whole structure.

[0059] 4. Installation and hoisting of tank type circuit breakers

[0060] Removing the adjustable screw and upper clamping ring: Before lifting the whole structure to the bottom of the tank circuit breaker, it is necessary to remove the adjustable screw 25 of the sliding steel beam 2, and take out the upper clamping ring 31 and the monitoring card point 33. This step needs to ensure that all parts are properly kept for subsequent installation work.

[0061] Install the upper clamp ring and monitoring card point: After the whole structure is hoisted to the bottom of the tank circuit breaker, the upper clamp ring 31 and the monitoring card point 33 need to be installed on the top of the tank circuit breaker. During the installation process, it is necessary to ensure that they are tightly and firmly connected with the fixing screw hole 32 and the adjustable screw rod 25 to ensure the reliability of the connection between the tank circuit breaker and the adjustable clamp 3 and the sliding steel beam 2.

[0062] Integral hoisting of the tank type circuit breaker: Finally, the assembled overall structure (including the tank type circuit breaker, the sliding steel beam 2, the adjustable clamp 3 and the opening frame 1) is hoisted as a whole through the large hoisting lug 22. During the hoisting process, it is necessary to maintain a steady and uniform moving speed and pay close attention to the stability and safety of the overall structure.

[0063] 5. Installation of online monitoring device

[0064] Disassembling the monitoring card point: When it is necessary to install the online monitoring device, the monitoring card point 33 can be removed from the upper clamping ring 31 first.

[0065] Install the online monitoring device: Install the required online monitoring device on the monitoring card point 33, and ensure that it is tightly and firmly connected to the upper clamp ring 31. This step can ensure that the online monitoring device can accurately and reliably monitor the operating status of the tank circuit breaker.

[0066] Reinstall the monitoring card point: reinstall the monitoring card point 33 equipped with the online monitoring device on the upper clamp ring 31, and check whether its connection is firm and reliable. After this step is completed, the assembly and transportation of the entire tank circuit breaker is completed.

[0067] Through the above detailed step description, we can more clearly understand the assembly and transportation process of the sliding steel beam 2, the adjustable clamp 3 and the opening frame 1, so as to ensure that each step is accurate and improve the efficiency and safety of the overall operation.

[0068] According to the overall replacement device and method of a tank circuit breaker designed by the present invention, when the lifting of the tank circuit breaker casing does not meet the safety distance required by the regulations, the overall replacement special device is used to increase the distance between the crane arm and the adjacent live body to achieve the overall lifting of the circuit breaker and the casing. This avoids the problem of delaying or changing the replacement plan time of the tank circuit breaker when the adjacent live equipment of the tank circuit breaker cannot be shut down at the same time, affecting the equipment replacement demand, and endangering the stable operation of the ultra-high voltage power grid.

[0069] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0070] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tank type circuit breaker integral replacement device, characterized in that: include: Open frame (1), sliding steel beam (2), adjustable hoop (3); The two ends of the sliding steel beam (2) are slidably connected to the open frame (1), and the adjustable hoop (3) is fixedly mounted on the sliding steel beam (2); The adjustable clamp (3) comprises a fixing plate (23), an upper clamping ring (31) and a fixing bolt (32); the bottom of the fixing plate (23) is fixedly connected to the top of the sliding steel beam (2); fixing screw holes (32) are arranged at both ends of the upper clamping ring (31); the top of the fixing plate (23) is provided with the adjustable screw (25) adapted to the fixing screw holes (32) at both ends of the upper clamping ring (31); the upper clamping ring (31) is detachably connected to the fixing plate (23) via the fixing screw holes (32) and the adjustable screw (25).

2. The device for replacing a tank type circuit breaker as claimed in claim 1, characterized in that: The open frame (1) comprises a left side frame (11), a right side frame (12), a tail frame (13), a connecting plate (14), and a small lifting lug (15); one end of the left side frame (11) is fixedly connected to the tail frame (13) via the connecting plate (14); one end of the right side frame (12) is fixedly connected to the tail frame (13) via the connecting plate (14); the small lifting lugs (15) are evenly installed at both ends of the left side frame (11) and the right side frame (12) for lifting and transporting the open frame (1) via the small lifting lugs (15).

3. The device for replacing a tank type circuit breaker as claimed in claim 2, characterized in that: The sliding steel beam (2) comprises an opening plate (21), a large lifting lug (22) and a beam body (26); the opening plates (21) are fixedly mounted at both ends of the beam body (26); the beam body (26) is slidably connected to the opening frame (1) via the opening plates (21); the large lifting lug (22) is evenly fixedly mounted at both ends of the beam body (26) and is used for directly or indirectly lifting and transporting the tank-type circuit breaker via the large lifting lug (22).

4. The device for replacing a tank type circuit breaker as claimed in claim 3, characterized in that: The left side frame (11) and the right side frame (12) are provided with a plurality of fixing holes (16), and the opening plate (21) is position-limitingly connected to the left side frame (11) and the right side frame (12) through the fixing holes (16).

5. The device for replacing a tank type circuit breaker as claimed in claim 1, characterized in that: A monitoring card point (33) is provided on the upper clamp (31), and the monitoring card point (33) is used to install an online monitoring device to obtain data during the overall replacement process of the tank circuit breaker.

6. The device for replacing a tank type circuit breaker as claimed in claim 1, characterized in that: A lower clamping ring (24) is provided on the fixing plate (23), and the lower clamping ring (24) and the upper clamping ring (31) fix the tank type circuit breaker body.

7. A method for replacing a tank type circuit breaker as a whole, applicable to a device for replacing a tank type circuit breaker as a whole according to any one of claims 1 to 6, characterized in that: The fixing plate (23) of the sliding steel beam (2) is removed from the fixing holes (16) of the left frame (11) and the right frame (12), and the upper clamping ring (31) of the adjustable clamping ring (3) is removed from the fixing screw hole (32). The sliding steel beam (2) and the upper clamping ring (31) are respectively installed from the upper part and the lower part of the tank type circuit breaker body, and the adjustable screw rod (25) and the fixing screw hole (32) are used to ensure that they are connected and fastened to the tank type circuit breaker body. By selecting the fixing holes (16) on the opening plate (21) and the left frame (11) and the right frame (12), the overall center of gravity balance point of the tank type circuit breaker is adjusted, and the opening frame (1) is hoisted and transported through the small lifting lug (15), and the tank type circuit breaker is directly or indirectly hoisted and transported through the large lifting lug (22).

8. A method for replacing a tank type circuit breaker as a whole according to claim 7, characterized in that: The left side frame (11) and the right side frame (12) are hoisted to a suitable horizontal position through the small hoisting lugs (15), and connected to the tail frame (13) through the connecting plate (14). When in use, the assembled opening frame (1) is hoisted to a specified horizontal position through the small hoisting lugs (15).

9. A method for replacing a tank type circuit breaker as a whole according to claim 8, characterized in that: The sliding steel beam (2) is hoisted onto the assembled open frame (11) through the large hoisting lug (22), and connected to the left frame (11) and the right frame (12) of the open frame (1) through the open plate (21). Suitable fixing holes (16) are selected according to tank type circuit breakers of different sizes to adjust the overall center of gravity balance point of the tank type circuit breaker. When in use, the assembled sliding steel beam (2) and the open frame (1) are hoisted as a whole to a specified horizontal position through the large hoisting lug (22).

10. A method for replacing a tank type circuit breaker as described in claim 9, characterized in that: When in use, the adjustable screw (25) of the sliding steel beam (2) is removed from the fixing screw hole (32), the upper clamping ring (31) and the monitoring clamping point (33) are taken out, the assembled sliding steel beam (2) and the opening frame (1) are lifted to the bottom of the tank type circuit breaker through the large lifting lug (22), the upper clamping ring (31) and the monitoring clamping point (33) are installed on the top of the tank type circuit breaker, the fixing screw hole (32) and the adjustable screw (25) are connected, and the tank type circuit breaker is ensured to be firmly connected with the upper clamping ring (31) of the adjustable clamp (3) and the lower clamping ring (24) of the sliding steel beam (2).

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