A detachable grading ring, grading system and detachable method

Abstract

The application discloses a detachable equalizing ring, an equalizing system and a dismounting method. The detachable equalizing ring comprises a plurality of arc-shaped sub-rings, both ends of the sub-ring are configured as a plug-in end and a sleeve joint end, the plug-in end of one of the adjacent two sub-rings can be plugged into the sleeve joint end of the other, and correspondingly, the plurality of sub-rings are connected in sequence to splice the annular equalizing ring. The equalizing system comprises at least one detachable equalizing ring. The dismounting method comprises assembling and dismounting. The modular design is used to split a whole large-size equalizing ring into a plurality of small-size sub-rings, thereby solving the problem of transportation difficulty. Two hoisting belts are arranged to be connected with the equalizing system and hoisting equipment respectively, so as to solve the problem of dismounting difficulty.

Description

Technical Field

[0001] This invention relates to the field of equalizing ring technology, specifically to a detachable equalizing ring, an equalizing system, and a disassembly and assembly method. Background Technology

[0002] In high-voltage testing, grading rings are often used to improve the electric field distribution and reduce partial discharge levels in the test circuit, thereby improving the test quality factor. To control the surface electric field strength within a reasonable range, the size of the grading ring increases with the test voltage. To balance grading effectiveness, ring weight, and ease of on-site operation, grading rings used in high-voltage field tests often employ a large-diameter hollow ring structure, including single-ring or multi-ring designs. According to relevant industry standards, the recommended diameter for a 1000kV double-ring grading ring used in on-site partial discharge testing of UHV AC transformers exceeds 2600mm, the height is 2600mm, and the ring diameter exceeds 800mm. Since the surface electric field strength is also affected by factors such as altitude, atmospheric environment, and the manufacturing process of the grading ring, the dimensions of grading rings used in on-site high-voltage tests are often larger than the recommended parameters to ensure sufficient margin and reduce test uncertainty.

[0003] For large-sized equalizing rings, especially equalizing systems composed of multiple equalizing rings, there are many difficulties in their practical use, specifically:

[0004] Firstly, there are transportation difficulties. According to the current "Regulations on the Administration of Overweight and Oversized Vehicles on Highways", when the "total height of the vehicle and cargo exceeds 4 meters from the ground" and the "total width of the vehicle and cargo exceeds 2.55 meters", the freight transport vehicle is considered an overweight and oversized vehicle. It should obtain the relevant permits in accordance with the law and take effective measures to travel on highways according to the designated time, route and speed. It is not allowed to travel on highways without permission.

[0005] Secondly, disassembly and assembly are difficult. The large-sized equipotential rings are far from the ground. For example, the equipotential ring used in a 1000kV UHV AC transformer is about 15m above the ground. Disassembly and assembly of the equipotential rings are high-altitude operations, which pose high safety risks. At the same time, due to the large size of the equipotential rings and the fact that the hoisting point of the equipotential rings is located inside the equipotential rings, it is difficult for workers outside the equipotential rings to work. Therefore, in the existing technology, workers often need to enter the unfixed equipotential rings from a high-altitude work platform to manually disassemble and assemble the hooks, which poses a great safety risk. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that the existing large-size equalizing rings are difficult to transport and disassemble. The purpose is to provide a detachable equalizing ring, an equalizing system and a disassembly and assembly method to solve the above problems.

[0007] This invention is achieved through the following technical solution:

[0008] In a first aspect, the present invention provides a detachable equalizing ring, comprising a plurality of arc-shaped sub-rings, the two ends of which are respectively configured as a plug-in end and a sleeve end. In two adjacent sub-rings, the plug-in end of one can be plugged into the sleeve end of the other. Accordingly, the plurality of sub-rings are connected in sequence to splice together to form a ring-shaped equalizing ring.

[0009] In one possible design, a concealer is also included, which covers the connection between two adjacent sub-rings.

[0010] In one possible design, the concealer is made of a flexible conductive or semi-conductive material and has a flat, cushion-like structure.

[0011] In one possible design, a support rod is connected to the inner circumference of the sub-ring, and the support rod extends toward the center of the equalizing ring; correspondingly, an intermediate connector is provided at the center of the equalizing ring, and the sub-rings that make up the equalizing ring are all connected to the intermediate connector through the support rod, and the equalizing ring has a height, with the intermediate connector and the support rod both located within the height range of the equalizing ring.

[0012] In one possible design, the intermediate connector is constructed as a barrel-shaped structure, with a support rod connected to the outer periphery of the barrel-shaped structure and a socket hole provided on the inner periphery of the barrel-shaped structure.

[0013] In one possible design, the equalizing ring is provided with an equipotential structure, which includes an equipotential spring or an equipotential ring. The equipotential spring is located inside the socket, and the equipotential ring is connected to an equipotential wire for electrical connection and an elastic rope for achieving clamping.

[0014] Secondly, the present invention provides a pressure equalization system, including at least one of the aforementioned detachable pressure equalization rings.

[0015] In one possible design, when multiple detachable equalizing rings are provided, the multiple detachable equalizing rings are coaxially arranged from top to bottom and spaced apart, and each detachable equalizing ring is connected to an intermediate connector through a support rod.

[0016] In one possible design, there is at least one intermediate connector. When there are multiple intermediate connectors, the intermediate connectors are arranged in a one-to-one correspondence with the detachable equalizing rings, and adjacent intermediate connectors are connected sequentially from top to bottom. The equalizing system has a height, and the intermediate connectors are located within the height range of the equalizing system.

[0017] Thirdly, the present invention provides a method for assembling and disassembling an equalizing ring, including assembly and disassembly;

[0018] Assembly includes the following steps:

[0019] S100 Installation: One end of a single lifting sling is connected to the lifting ring of a multi-leg lifting sling, and the other end of the single lifting sling is connected to the lifting equipment. The hooks of the multi-leg lifting sling are connected to the lifting points of the equalizing system. A wire is laid on the inner side of the uppermost equalizing ring, and the wire is used to connect the hooks and lifting rings located inside the equalizing ring.

[0020] S200 hoisting: The pressure equalization system is hoisted using hoisting equipment; the pressure equalization system is placed on top of the casing; the hoisting hook of the hoisting equipment is lowered to the plane area near the hoisting point on the inner side of the uppermost pressure equalization ring;

[0021] S300 Separation: Workers ride the elevated work platform to the vicinity of the equalizing system; pull the lifting ring of the multi-leg lifting sling to the outer edge of the equalizing ring, and separate the two lifting slings; reset the lifting equipment;

[0022] S400 Equipotential Bonding: Check if the hook and conductor of the multi-leg lifting sling are outside the equipotential bonding ring. If so, pull them into the equipotential bonding ring. If an equipotential bonding ring is provided, pull it until it is connected to the terminal block of the sleeve. Connect other equipotential bonding wires.

[0023] The conductor has a certain length to prevent it from being subjected to lifting tension; in steps S300 and S400, the operator chooses whether to use the operating lever.

[0024] The demolition includes the following steps:

[0025] S100 Installation: The lifting hook of the hoisting equipment is connected to a single lifting sling; the lifting hook moves to the inner side of the uppermost equalizing ring, near the plane area of ​​the lifting point;

[0026] S200 Dismantling: Workers use an elevated work platform to reach the vicinity of the equipotential bonding system; dismantle the equipotential ring and other equipotential wiring.

[0027] S300 connection: Towing one of a single lifting sling and a multi-leg lifting sling to approach and connect to the other;

[0028] S400 Lifting: Adjust the hook to the vertical line of the center of gravity of the equalizing system; slowly tighten the lifting straps; lift to separate the equalizing system and the casing;

[0029] In steps S200 and S300, the operator can choose whether or not to use the control lever.

[0030] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0031] 1. By utilizing a modular design, a large equalizing ring can be disassembled into several smaller sub-rings. During transportation, these sub-rings are disassembled, allowing for convenient transportation using existing common transportation tools, thus reducing transportation costs. Once transported to the destination, the rings are then reassembled into a ring-shaped equalizing ring.

[0032] 2. Two lifting slings are provided to connect the equalizing system and the lifting equipment respectively. When workers are dismantling the equipment, the elevated work platform is moved to the equalizing ring, and then the two lifting slings are separated. There is no need to directly touch the lifting point from the side of the equalizing ring and operate it. Moreover, there is only one connection point between the two lifting slings, which reduces the number of dismantling operations. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0034] Figure 1 This is a schematic diagram of a single-ring structure.

[0035] Figure 2 This is a schematic diagram of a single-ring structure without intermediate connecting parts.

[0036] Figure 3 This is a schematic diagram of a multi-ring structure.

[0037] Figure 4 This is a schematic diagram of the assembly of the equipotential ring.

[0038] The attached diagram shows the markings and corresponding component names:

[0039] 1. Sub-ring; 2. Support rod; 3. Intermediate connector; 4. Equipotential ring; 5. Equipotential conductor; 6. Elastic rope. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0041] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to practice the invention. In other embodiments, well-known structures, circuits, materials, or methods have not been specifically described in order to avoid obscuring the invention.

[0042] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] In the description of this invention, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0044] Example 1:

[0045] For large-sized equalizing rings, in addition to the road approval issues mentioned in the background section, the short-distance transportation and disassembly of the equalizing rings during loading and unloading are also quite difficult and pose certain safety risks. Furthermore, the requirements for the transportation vehicles are also high, further increasing the difficulty and cost of transportation. Therefore, this invention provides a detachable equalizing ring, specifically:

[0046] like Figure 1 and Figure 2 As shown, a detachable equalizing ring includes several arc-shaped sub-rings 1. The two ends of the sub-rings 1 are respectively constructed as plug-in ends and socket ends. In two adjacent sub-rings 1, the plug-in end of one can be plugged into the socket end of the other. Correspondingly, multiple sub-rings 1 are connected in sequence to splice together to form a ring-shaped equalizing ring.

[0047] The modular design breaks down a large equalizing ring into several smaller sub-rings 1. During transportation, the sub-rings 1 are disassembled, allowing for convenient transportation using existing common transportation tools, thus reducing transportation costs. Once transported to the destination, the sub-rings 1 are reassembled into a ring shape.

[0048] Based on this, the detachable equalizing ring effectively solves the problem of transporting large-size equalizing rings through its detachable design, effectively reducing transportation difficulty, ensuring transportation safety, and saving transportation costs.

[0049] Furthermore, if the detachable equalizing ring is damaged during use, the corresponding sub-ring 1 can be replaced instead of the entire ring, which helps to reduce the maintenance costs in the later stages.

[0050] Before work begins, design or select sub-rings of the corresponding size according to the required equipotential ring dimensions. After selecting an appropriate number of sub-rings, load them onto a truck and transport them to the construction site. Assemble the sub-rings on-site to obtain the required equipotential ring. Finally, hoist the equipotential ring into place.

[0051] In one possible implementation, the detachable equalizing ring further includes a masking element, which covers the connection between two adjacent sub-rings 1. Based on the above design, the function of the equalizing ring is to make the distributed voltage of the suspended vertical insulator string more uniform, eliminate the potential difference between different parts, and achieve the effect of equipotentiality. Since the detachable equalizing ring adopts a split design, factors such as errors in the processing of sub-rings 1, wear on sub-rings 1, and defects in splicing may exist. For the spliced ​​equalizing ring, there may be defects such as burrs and gaps at the connection between two sub-rings 1, which will create a potential difference and discharge outwards. This not only fails to achieve the effect of using the equalizing ring but also creates new safety hazards. Therefore, a masking element is used to cover the defective locations.

[0052] Specifically, after the equalizing ring is assembled, the staff needs to inspect each connection point to confirm the presence and severity of defects, and then decide whether to use a concealer to cover them. The concealer is fixed to the outer circumference of the equalizing ring and covers the defects, making the outer circumference of the equalizing ring smoother and more conforming, eliminating defects on the outer circumference of the equalizing ring and the potential difference caused by the defects.

[0053] It is easy to understand that the concealer can be fixed to the pressure equalization ring by any suitable fixing method.

[0054] Optionally, the concealer is made of a flexible conductive or semi-conductive material and has a flat, pad-like structure. Based on this, the concealer is conductive to ensure the elimination of potential differences. At the same time, the shape of the concealer must also be flat to avoid creating potential differences at the concealer location.

[0055] In one possible implementation, a support rod 2 is connected to the inner circumference of the sub-ring 1, and the support rod 2 extends toward the center of the equalizing ring; correspondingly, an intermediate connector 3 is provided at the center of the equalizing ring, and the sub-rings 1 that make up the equalizing ring are all connected to the intermediate connector 3 through the support rod 2, and the equalizing ring has a height, with the intermediate connector 3 and the support rod 2 both located within the height range of the equalizing ring.

[0056] Based on the above design scheme, in the equalizing ring, the intermediate connecting piece 3 is connected by the support rod 2. On the one hand, this connects each sub-ring 1 into a whole, which also helps to improve the structural strength of the equalizing ring. On the other hand, the intermediate connecting piece 3 enables the connection between the equalizing ring and related equipment, thereby realizing the installation of the equalizing ring.

[0057] As is easily understood, each sub-ring 1 is provided with at least one support rod 2, and the number of support rods 2 is appropriately increased according to the size of the sub-ring 1. Any suitable existing rod can be selected for the support rod 2. The support rods 2 are connected using any suitable existing detachable connection method such as bolts, pull tabs, or clips, achieving both connection and detachability to facilitate easy assembly and disassembly of all parts of the equalizing ring.

[0058] In addition, in order to avoid potential difference caused by support rod 2 and / or intermediate connector 3, it is required that both intermediate connector 3 and support rod 2 are within the height range of the equalizing ring to ensure that the equalizing ring can be used normally.

[0059] Optionally, the intermediate connector 3 is constructed as a barrel shape, with the support rod 2 connected to the outer periphery of the barrel shape, and a socket hole provided on the inner periphery of the barrel shape. Based on the above design scheme, considering the formation of the equalizing ring, the intermediate connector 3 is preferably constructed as a cylinder to reduce the influence of edges on the potential and effectively reduce sharp corners. The intermediate connector 3 is also provided with a socket hole, thereby connecting relevant equipment through the socket hole to realize the installation of the equalizing ring.

[0060] Furthermore, if necessary, the detachable equalizing ring can be directly placed on the testing equipment, such as... Figure 2 As shown, intermediate connector 3 can be omitted, simplifying the structure and reducing the number of devices.

[0061] In one possible implementation, the equalizing ring is provided with an equipotential structure, which includes an equipotential spring or an equipotential ring 4. The equipotential spring is located inside the socket, and the equipotential ring 4 is connected to an equipotential wire 5 for electrical connection and an elastic rope 6 for achieving clamping.

[0062] Based on the above design scheme, when the equalizing ring is connected to relevant equipment, an equipotential structure is used to achieve electrical connection between the equalizing ring and the relevant equipment, thereby forming a conductive loop and achieving the effect of equipotentiality. Specifically:

[0063] The equipotential spring is made of conductive metal. During the installation of the equalizing ring, the equipotential spring is compressed, which achieves electrical connection without hindering the connection between the intermediate connector 3 and related equipment. At this time, the equipotential spring, intermediate connector 3, support rod 2 and sub-ring 1 are all conductive to form a conductive circuit.

[0064] like Figure 4As shown, after the equalizing ring is installed, the equipotential ring 4 is fitted onto the relevant equipment by the operator. The equipotential ring 4, in conjunction with the equipotential conductor 5, forms a conductive loop, thus achieving electrical connection. Simultaneously, an elastic rope 6 is used to ensure that the equipotential ring 4 remains firmly against the relevant equipment, ensuring the loop remains continuous.

[0065] It is easy to understand that the equipotential conductor 5 and the elastic rope 6 can each be selected from any suitable existing equipment.

[0066] Based on the aforementioned detachable equalizing ring, an equalizing system is introduced, such as... Figures 1-3 As shown, the equalizing system includes at least one of the aforementioned detachable equalizing rings.

[0067] In practical applications, multiple equalizing rings may be used simultaneously. Depending on the required number of equalizing rings, the equalizing system can be divided into a single-ring structure with only one equalizing ring and a multi-ring structure with multiple equalizing rings. The use of detachable equalizing rings to form the equalizing system improves the convenience and practicality of using large-size equalizing rings, ensuring the normal conduct of relevant high-pressure tests.

[0068] In one possible implementation, when multiple detachable equalizing rings are provided, the multiple detachable equalizing rings are coaxially arranged from top to bottom and spaced apart, and each detachable equalizing ring is connected to the intermediate connecting member 3 through the support rod 2.

[0069] Based on the above design scheme, and according to specific usage requirements, those skilled in the art can select the size, number, and arrangement of the equalizing rings, making the equalizing system flexible and versatile in use. Furthermore, for multi-ring structures, they are connected via intermediate connectors 3. If there is only one intermediate connector 3, the support rods 2 need to be inclined to achieve the connection. Having multiple intermediate connectors 3 helps reduce the inclination of the support rods 2, provides more space for arrangement, and allows for an increase in the number of support rods 2, thereby improving the structural strength of the equalizing system.

[0070] In one possible implementation, at least one intermediate connector 3 is provided. When multiple intermediate connectors 3 are provided, the intermediate connectors 3 are arranged one-to-one with the detachable equalizing rings, and adjacent intermediate connectors 3 are connected sequentially from top to bottom. The equalizing system has a height, and the intermediate connectors 3 are located within the height range of the equalizing system.

[0071] Based on the above design scheme, after setting multiple intermediate connectors 3, the total height of the intermediate connectors 3 is relatively large. In order to avoid the formation of potential difference, the intermediate connectors 3 are required to be located within the height range of the voltage equalization system to ensure that the voltage equalization system can work normally.

[0072] In addition, for multiple intermediate connectors 3, based on the connection between the equalizing ring and related equipment, the multiple intermediate connectors 3 can be connected sequentially in the forward direction, or some of the intermediate connectors 3 can be connected in the reverse direction. The connection methods are flexible and diverse, and the staff can choose according to the actual situation.

[0073] Example 2:

[0074] Large-sized equalizing rings present significant challenges in assembly and disassembly. Specifically, because equalizing rings are large-diameter hollow ring structures, their pipe diameter is also relatively large when the ring size is excessive. Furthermore, the lifting point for the equalizing ring is located on its lower inner side. During assembly, when the equalizing system is on the ground, workers can move flexibly, conveniently, and safely, and can perform related operations. However, once the equalizing system is lifted, workers must use a working platform to move to its vicinity. At this point, due to the working environment and arm length limitations, workers find it difficult to directly touch the lifting point from the side of the equalizing ring and perform operations.

[0075] Therefore, based on Example 1, this embodiment introduces a method for disassembling and assembling an equalizing ring, which includes assembly and disassembly.

[0076] Assembly includes the following steps:

[0077] S100 Installation: One end of a single lifting sling is connected to the lifting ring of a multi-leg lifting sling, and the other end of the single lifting sling is connected to the lifting equipment. The hooks of the multi-leg lifting sling are connected to the lifting points of the equalizing system. A wire is laid on the inner side of the uppermost equalizing ring, and the wire is used to connect the hooks and lifting rings located inside the equalizing ring.

[0078] S200 hoisting: The pressure equalization system is hoisted using hoisting equipment; the pressure equalization system is placed on top of the casing; the hoisting hook of the hoisting equipment is lowered to the plane area near the hoisting point on the inner side of the uppermost pressure equalization ring;

[0079] S300 Separation: Workers ride the elevated work platform to the vicinity of the equalizing system; pull the lifting ring of the multi-leg lifting sling to the outer edge of the equalizing ring, and separate the two lifting slings; reset the lifting equipment;

[0080] S400 Equipotential: Check if the hook and wire of the multi-leg lifting sling are outside the equipotential ring. If so, pull them into the equipotential ring. If there is an equipotential ring 4, pull the equipotential ring 4 until it is connected to the terminal block of the sleeve. Connect other equipotential wiring.

[0081] The conductor has a certain length so that it is not subject to lifting tension.

[0082] For assembly, two lifting straps are provided to connect the equalizing system and the lifting equipment respectively. When workers disassemble, the elevated work platform is moved to the equalizing ring, and then the two lifting straps are separated. There is no need to directly touch the lifting point from the side of the equalizing ring and operate. Moreover, there is only one connection point between the two lifting straps, which reduces the number of disassembly operations.

[0083] After the two lifting slings are separated, the number of lifting points on the multi-leg lifting sling remaining on the equipotential bonding system increases, distributing the force and making the equipotential bonding system more stable. After separation, the hooks of the multi-leg lifting slings will fall naturally. To avoid potential differences, workers should check and promptly pull the hooks located outside the equipotential bonding ring into the equipotential bonding ring. Simultaneously, other equipotential bonding connections should be installed, specifically as needed by those skilled in the art; this invention does not impose any limitations on this.

[0084] Meanwhile, in step S100, the position of the multi-leg lifting sling is restricted by the wire, which improves the equipotential performance on the one hand, and restricts the movement range of equipment such as hooks after dismantling on the other hand, so as to minimize the workload of equipotential operation.

[0085] For the equipotential structure on the equalizing ring, either the equipotential spring or the equipotential ring 4, the equalizing system can choose to use either one. The equipotential spring, located within the socket of the intermediate connector 3, is connected to the sleeve during the installation of the equalizing system, requiring no additional operation. However, if the equipotential ring 4 is used, it needs to be installed by the operator after the equalizing system is installed. The specific working principles of both have been explained in Example 1 and will not be repeated here.

[0086] Optionally, in steps S300 and S400, the worker chooses whether to use the control lever. Based on this, the control lever expands the worker's operating range, ensuring the worker remains within the aerial work platform at all times, thus improving operational safety. It is readily understood that the control lever can be constructed in any suitable shape, or any suitable existing equipment can be selected.

[0087] The demolition includes the following steps:

[0088] S100 Installation: The lifting hook of the hoisting equipment is connected to a single lifting sling; the lifting hook moves to the inner side of the uppermost equalizing ring, near the plane area of ​​the lifting point;

[0089] S200 Dismantling: Workers use an elevated work platform to reach the vicinity of the equipotential bonding system; dismantle equipotential ring 4 and other equipotential wiring.

[0090] S300 connection: Towing one of a single lifting sling and a multi-leg lifting sling to approach and connect to the other;

[0091] S400 Lifting: Adjust the hook to the vertical line of the center of gravity of the equalizing system; slowly tighten the lifting straps; lift to separate the equalizing system and the casing.

[0092] For dismantling, after removing the equipotential ring 4, equipotential bonding wires, and other equipment, simply connect the single lifting sling and the multi-leg lifting sling. It is simple, convenient, and easy to operate. Similarly, in steps S200 and S300, the operator can choose whether to use the operating lever.

[0093] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for disassembling and assembling a pressure equalizing ring, characterized in that, The system includes a detachable equalizing ring, which includes several arc-shaped sub-rings (1). The two ends of the sub-rings (1) are respectively constructed as plug-in ends and socket ends. In two adjacent sub-rings (1), the plug-in end of one can be plugged into the socket end of the other. Accordingly, multiple sub-rings (1) are connected in sequence to splice together to form a ring-shaped equalizing ring. A support rod (2) is connected to the inner circumference of the sub-ring (1), and the support rod (2) extends toward the center of the equalizing ring; correspondingly, an intermediate connector (3) is provided at the center of the equalizing ring, and the sub-rings (1) that make up the equalizing ring are all connected to the intermediate connector (3) through the support rod (2), and the equalizing ring has a height, and the intermediate connector (3) and the support rod (2) are both located within the height range of the equalizing ring; The intermediate connector (3) is constructed as a barrel-shaped structure. The outer periphery of the barrel-shaped structure is connected to the support rod (2), and the inner periphery of the barrel-shaped structure is provided with a sleeve hole. The equalizing ring is provided with an equipotential structure, which includes an equipotential spring or an equipotential ring (4). The equipotential spring is located inside the socket hole, and the equipotential ring (4) is connected with an equipotential wire (5) for electrical connection and an elastic rope (6) for achieving tightness. The pressure equalization system based on the detachable pressure equalization ring includes the detachable pressure equalization ring; Including assembly and dismantling; Assembly includes the following steps: S100 Installation: One end of a single lifting sling is connected to the lifting ring of a multi-leg lifting sling, and the other end of the single lifting sling is connected to the lifting equipment. The hooks of the multi-leg lifting sling are connected to the lifting points of the equalizing system. A wire is laid on the inner side of the uppermost equalizing ring, and the wire is used to connect the hooks and lifting rings located inside the equalizing ring. S200 hoisting: The pressure equalization system is hoisted using hoisting equipment; the pressure equalization system is placed on top of the casing; the hoisting hook of the hoisting equipment is lowered to the plane area near the hoisting point on the inner side of the uppermost pressure equalization ring; S300 Separation: Workers ride the elevated work platform to the vicinity of the equalizing system; pull the lifting ring of the multi-leg lifting sling to the outer edge of the equalizing ring, and separate the two lifting slings; reset the lifting equipment; S400 Equipotential: Check whether the hook and wire of the multi-leg lifting sling are outside the equipotential ring. If so, pull them into the equipotential ring. If there is an equipotential ring (4), pull the equipotential ring (4) until it is connected to the terminal block of the sleeve. Connect other equipotential wiring. The conductor has a certain length to prevent it from being subjected to lifting tension; in steps S300 and S400, the operator chooses whether to use the operating lever. The demolition includes the following steps: S100 Installation: The lifting hook of the hoisting equipment is connected to a single lifting sling; the lifting hook moves to the inner side of the uppermost equalizing ring, near the plane area of ​​the lifting point; S200 Dismantling: Workers ride an elevated work platform to the vicinity of the equalization system; dismantle the equipotential ring (4) and other equipotential wiring; S300 Connection: Towing one of a single lifting sling and a multi-leg lifting sling to approach and connect to the other; S400 Lifting: Adjust the hook to the vertical line of the center of gravity of the equalizing system; slowly tighten the lifting straps; lift to separate the equalizing system and the casing; In steps S200 and S300, the operator can choose whether or not to use the control lever.

2. The method for disassembling and assembling the equalizing ring according to claim 1, characterized in that, It also includes a concealer, which covers the connection between two adjacent sub-rings (1).

3. The method for disassembling and assembling the equalizing ring according to claim 2, characterized in that, The concealer is made of flexible conductive or semi-conductive material and has a flat, cushion-like structure.

4. The method for disassembling and assembling the equalizing ring according to claim 1, characterized in that, When multiple detachable equalizing rings are provided, the multiple detachable equalizing rings are coaxial from top to bottom and spaced apart, and each detachable equalizing ring is connected to the intermediate connector (3) through the support rod (2).

5. The method for disassembling and assembling the equalizing ring according to claim 4, characterized in that, There is at least one intermediate connector (3). When there are multiple intermediate connectors (3), the intermediate connectors (3) are arranged in a one-to-one correspondence with the detachable equalizing rings. Adjacent intermediate connectors (3) are connected sequentially from top to bottom. The equalizing system has a height, and the intermediate connectors (3) are located within the height range of the equalizing system.

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