Combined SF6 gas insulated switchgear docking positioning device

Abstract

The utility model discloses a combined SF6 gas insulation switch class equipment butt joint positioning device, this combined SF6 gas insulation switch class equipment butt joint positioning device includes locating rod, handle, connecting component three module structure, and connecting component realizes the detachable connection of locating rod and handle, and locating rod is equipped with multi -specification, is used for adapting the different through -hole of equipment, and through multi -specification locating rod adapts equipment different through -hole, realizes the general nature breakthrough, and single set of tool covers full -size demand, reduces the storage cost more than 80%. The detachable design supports high altitude / narrow space quick assembly, avoids the moment transfer dead angle of traditional integral tool, improves the operation flexibility, and single component damage can be independently replaced, and the maintenance cost is reduced 60% (compared with the welding type positioning pin), and the maintenance convenience is higher.

Description

Technical Field

[0001] This utility model relates to the field of power technology, and in particular to a combined SF6 gas-insulated switchgear docking and positioning device. Background Technology

[0002] SF6 gas-insulated switchgear (such as GIS and circuit breakers) is widely used in power systems. The docking process requires precise alignment of components such as flanges and conductors. Traditional positioning methods often use fixed locating pins or temporary welded guide rods. However, these methods have poor versatility, and the through-hole sizes for different equipment models vary significantly (commonly Φ10.5mm~Φ24mm). This necessitates the use of multiple sets of positioning tools, increasing costs and storage burden. Utility Model Content

[0003] The purpose of this invention is to provide a combined SF6 gas-insulated switchgear docking and positioning device, which aims to solve the technical problem of poor versatility of existing SF6 gas-insulated switchgear docking and positioning devices.

[0004] To address the aforementioned problems, according to one aspect of this application, this utility model provides a combined SF6 gas-insulated switchgear docking and positioning device. The combined SF6 gas-insulated switchgear docking and positioning device includes a positioning rod, a handle, and a connecting component. The connecting component is disposed between the positioning rod and the handle to detachably connect the positioning rod and the handle.

[0005] The positioning rod is equipped with multiple different specifications to adapt to the different through holes of the combined SF6 gas-insulated switchgear.

[0006] In some embodiments, the end of the positioning rod facing the handle has an extension, the cross-section of which has the same shape and area as the cross-section of the handle, and the connecting assembly is disposed between the positioning rod and the handle.

[0007] In some embodiments, the connecting assembly includes a first insert post formed at one end of the handle facing the extension and a first insert hole formed at one end of the extension facing the handle, the first insert hole having a first internal thread and the first insert post having a first external thread adapted to the first internal thread.

[0008] In some embodiments, the connecting assembly includes a second insert post formed on the extension toward the handle end and a second insert hole formed on the handle toward the extension end, the second insert hole having a second internal thread and the second insert post having a second external thread adapted to the second internal thread.

[0009] In some embodiments, the connecting assembly includes a third insertion hole formed on the extension toward the handle end, a fourth insertion hole formed on the handle toward the extension end, and a locking member with its two ends respectively inserted into the third insertion hole and the fourth insertion hole, wherein the third insertion hole and the fourth insertion hole are provided with a third internal thread, and the locking member is provided with a third external thread adapted to the third internal thread.

[0010] In some embodiments, the locking member is configured with at least two chordal surfaces at the central position, and the two chordal surfaces are arranged in parallel.

[0011] In some embodiments, the handle is a regular polygonal prism structure.

[0012] In some embodiments, the positioning rod is a cylindrical structure.

[0013] In some embodiments, the outer diameter of the positioning rod is Φ23.5mm, Φ17.5mm, Φ13.5mm or Φ10mm, to respectively adapt to the Φ24mm, Φ18mm, Φ14mm or Φ10.5mm through holes of the combined SF6 gas-insulated switchgear.

[0014] In some embodiments, the end of the positioning rod away from the handle is constructed with a chamfer to form a guide section.

[0015] Compared with the prior art, the combined SF6 gas-insulated switchgear docking positioning device of this utility model has at least the following beneficial effects:

[0016] This utility model discloses a combined SF6 gas-insulated switchgear docking and positioning device. This device comprises three modules: a positioning rod, a handle, and a connecting component. The connecting component allows for detachable connection between the positioning rod and the handle. The positioning rod is available in multiple specifications to adapt to different through holes in the equipment. This multi-specification positioning rod adaptability to different through holes achieves a breakthrough in versatility. A single tool set covers all size requirements, reducing storage costs by over 80%. The detachable design supports rapid assembly in high-altitude / confined spaces, avoiding torque transmission dead zones inherent in traditional integrated tools, improving operational flexibility. Damaged individual components can be replaced independently, reducing maintenance costs by 60% (compared to welded positioning pins), and offering greater ease of maintenance.

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the combined SF6 gas-insulated switchgear docking and positioning device provided in this embodiment of the utility model;

[0020] Figure 2 for Figure 1 Another structural schematic diagram of the docking and positioning device for combined SF6 gas-insulated switchgear;

[0021] Figure 3 A schematic diagram of another combined SF6 gas-insulated switchgear docking and positioning device provided in this embodiment of the utility model;

[0022] Figure 4 A schematic diagram of the structure of another combined SF6 gas-insulated switchgear docking and positioning device provided in this embodiment of the utility model;

[0023] Figure 5 for Figure 4 Another structural schematic diagram of the docking and positioning device for combined SF6 gas-insulated switchgear.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Positioning rod; 11. Extension; 111. First insertion hole; 112. Second insertion post; 113. Third insertion hole; 12. Guide section;

[0026] 2. Handle; 21. First insertion post; 22. Second insertion hole; 23. Fourth insertion hole;

[0027] 31. Locking element; 311. Chord section. Detailed Implementation

[0028] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this utility model application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0029] In the description of this utility model, it should be clarified that the terms "first," "second," etc., in the specification, claims, and drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "back," "left," "right," "up," "down," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Example 1

[0032] like Figures 1-5 As shown, this utility model embodiment provides a combined SF6 gas-insulated switchgear docking and positioning device. The combined SF6 gas-insulated switchgear docking and positioning device includes a positioning rod 1, a handle 2, and a connecting component. The connecting component is disposed between the positioning rod 1 and the handle 2 to detachably connect the positioning rod 1 and the handle 2.

[0033] The positioning rod 1 is equipped with multiple different specifications to adapt to the different through holes of the combined SF6 gas-insulated switchgear.

[0034] In this embodiment, the combined SF6 gas-insulated switchgear docking and positioning device comprises a three-module structure: a positioning rod 1, a handle 2, and a connecting component. The connecting component enables a detachable connection between the positioning rod 1 and the handle 2. The positioning rod 1 is equipped with multiple specifications to adapt to different through holes in the equipment. By adapting the positioning rod 1 to different through holes in the equipment with multiple specifications, a breakthrough in versatility is achieved. A single tool set covers all size requirements, reducing storage costs by more than 80%. The detachable design supports rapid assembly in high-altitude / confined spaces, avoiding the torque transmission dead zones of traditional integral tools, improving operational flexibility. Damaged individual components can be replaced independently, reducing maintenance costs by 60% (compared to welded positioning pins), and making maintenance more convenient.

[0035] It should be noted that the combined SF6 gas-insulated switchgear docking positioning device of the present invention is specifically used for positioning between two flanges in the combined SF6 gas-insulated switchgear. Generally, at least two positioning rods 1 of the docking positioning device are inserted into the corresponding holes of the two flanges to position the two flanges, and then the two flanges are locked together through the holes of the two flanges by bolts or other locking components.

[0036] In some embodiments, the end of the positioning rod 1 facing the handle 2 is provided with an extension 11, the cross-section of the extension 11 having the same shape and area as the cross-section of the handle 2, and the connecting assembly being disposed between the positioning rod 1 and the handle 2.

[0037] In this embodiment, the end of the positioning rod 1 is provided with an extension 11. The extension 11 has the same cross-sectional shape and area as the handle 2. The consistency of the cross-section eliminates stress concentration at the connection (the measured torque transmission efficiency is improved by 35%), prevents loosening of the threads, and optimizes force transmission. The extension 11 serves as a positioning reference, ensuring that the coaxiality between the handle 2 and the positioning rod 1 is ≤0.1mm, avoiding misalignment during docking, and ensuring assembly accuracy.

[0038] In some embodiments, the connecting assembly includes a first insert post 21 configured on the end of the handle 2 facing the extension 11 and a first insert hole 111 configured on the end of the extension 11 facing the handle 2, the first insert hole 111 having a first internal thread and the first insert post 21 having a first external thread adapted to the first internal thread.

[0039] In this embodiment, the handle 2 is provided with a first insertion post 21, which has a first external thread. The first insertion post 21 is inserted into the first insertion hole 111 of the positioning rod 1. This structure has high tensile strength, and the nested structure of the post and the hole can withstand an axial tensile force ≥500N, preventing the handle 2 from disengaging from the extension 11, and is suitable for docking heavy equipment.

[0040] In some embodiments, the connecting assembly includes a second insert post 112 constructed on the extension 11 toward the handle 2 and a second insert hole 22 constructed on the handle 2 toward the extension 11, the second insert hole 22 having a second internal thread and the second insert post 112 having a second external thread adapted to the second internal thread.

[0041] In this embodiment, the extension 11 of the positioning rod 1 is provided with a second insertion post 112. The second insertion post 112 is inserted into the second insertion hole 22 of the handle 2 and locked by internal and external threads. This structure allows the length to be extended and supports the connection of extension rods, which is particularly suitable for deep hole equipment.

[0042] In some embodiments, the connecting assembly includes a third insertion hole 113 constructed on the extension 11 facing the handle 2, a fourth insertion hole 23 constructed on the handle 2 facing the extension 11, and a locking member 31 with both ends inserted into the third insertion hole 113 and the fourth insertion hole 23 respectively. The third insertion hole 113 and the fourth insertion hole 23 are provided with a third internal thread, and the locking member 31 is provided with a third external thread adapted to the third internal thread.

[0043] In this embodiment, the positioning rod 1 and the handle 2 are connected by a double-ended screw of the locking component 31, enabling quick assembly and disassembly. The locking component 31 is independent of the main body, increasing the disassembly speed by 3 times when changing specifications. The locking component 31 with a double-threaded interface has 200% greater resistance to lateral shear force (compared to a single-insertion structure).

[0044] In some embodiments, the locking member 31 is provided with at least two chordal surfaces 311 at the middle position, and the two chordal surfaces 311 are arranged in parallel.

[0045] In this embodiment, a parallel chordal surface 311 is provided in the middle of the locking member 31. The chordal surface 311 facilitates the wrench engagement surface and prevents slippage (actual torque application efficiency is improved by 50%). It can hold various tools such as open-end wrenches / sockets, thus improving compatibility and adapting to environments without electricity.

[0046] In some embodiments, the handle 2 is a regular polygonal prism structure.

[0047] In this embodiment, the handle 2 is a regular polygonal prism, which multiplies the torque. The prism structure provides the wrench's point of application, and the maximum output torque reaches 120 N·m (twice that of the super-round rod structure).

[0048] Antistatic rubber can be wrapped around the two edges of the handle. The rubber layer prevents static sparks in the GIS room and ensures explosion-proof safety.

[0049] In some embodiments, the positioning rod 1 is a cylindrical structure.

[0050] In some embodiments, the outer diameter of the positioning rod 1 is Φ23.5mm, Φ17.5mm, Φ13.5mm or Φ10mm, to respectively adapt to the Φ24mm, Φ18mm, Φ14mm or Φ10.5mm through holes of the combined SF6 gas-insulated switchgear.

[0051] In this embodiment, the positioning rod 1 is a cylinder with an outer diameter of Φ23.5 / 17.5 / 13.5 / 10mm. A 0.5mm increment design (e.g., Φ23.5mm → Φ24mm hole) achieves a transition fit, with a positioning accuracy of ±0.05mm. These four specifications cover 90% of the through-hole standards (GB / T 11022) for SF6 equipment, achieving cost optimization.

[0052] The surface of positioning rod 1 is laser-microtextured, which makes the coefficient of friction controllable. The micro-dimple oil storage design reduces the insertion and extraction force by 40%. The addition of a nano-ceramic coating achieves ultra-corrosion resistance, reducing the corrosion rate of H2S / SF6 decomposition products by 99% (lifespan > 10 years).

[0053] In some embodiments, the end of the positioning rod 1 away from the handle 2 is constructed with a chamfer to form a guide section 12.

[0054] In this embodiment, a chamfer is provided at the end of the positioning rod 1 to form a guide section 12, which reduces the insertion resistance. The 30° chamfer design reduces the insertion force by 70% (FEA simulation verification). This protects the equipment from scratching the sealing surface of the SF6 equipment with sharp edges, reducing the leakage risk to below 0.1%.

[0055] The guide section 12 integrates a fiber optic displacement sensor for real-time centering monitoring and fiber optic feedback of coaxiality deviation (accuracy 0.01mm). The chamfered area is coated with a fluorescent tracer to enable visualization in dark environments. The fluorescent coating assists in nighttime operations and has a recognition distance of >30m.

[0056] This utility model relates to the field of power technology, specifically a positioning and correction device for the mating surface of SF6 gas-insulated switchgear in substations. Specifically, it consists of a cylindrical pin (positioning rod 1) with a specific head design for easy installation and disassembly. The SF6 gas-insulated GIS equipment mating positioning device is machined with high precision down to the millimeter level to ensure correct alignment of all components during installation, preventing misalignment that could lead to poor sealing, mechanical stress, or gas leakage due to sealing ring deformation, thus ensuring the insulation performance and safety of the equipment. During use, it may come into contact with sulfur hexafluoride or other gases and corrosive substances; therefore, the material needs to be corrosion-resistant and possess sufficient mechanical strength to withstand the shear forces and mechanical stresses during installation. This improves the overall installation efficiency of the equipment, reduces potential failure points, and significantly enhances the reliability and operational safety and stability of SF6 gas-insulated switchgear installation.

[0057] This utility model provides a docking and positioning device for SF6 gas-insulated switchgear, comprising a handle (handle 2) and a cylindrical pin (positioning rod 1). The cylindrical pin adapts to different diameter screw hole diameters and interface sizes of different components, and is connected to the handle by screws. The front end is designed as a cone or bevel to facilitate insertion into the docking hole and automatically correct minor deviations. The cone shape or bevel facilitates installation and removal using tools (such as wrenches).

[0058] This utility model provides a precise positioning device for SF6 gas-insulated switchgear, guiding components to align at connections such as flanges and busbars to prevent misalignment that could lead to sealing failure or mechanical stress concentration.

[0059] This utility model provides a docking and positioning device for SF6 gas-insulated switchgear, which improves sealing performance, ensures uniform compression of O-rings or gaskets, and maintains the airtightness of the gas chamber.

[0060] This utility model of a docking and positioning device for SF6 gas-insulated switchgear ensures electrical safety, aligns conductor positions, and prevents partial discharge caused by electric field distortion.

[0061] The main body of the docking and positioning device for SF6 gas-insulated switchgear of this utility model is made of austenitic stainless steel (such as 304 / 316L), which balances strength and corrosion resistance (titanium or bronze can also be used). For special working conditions, such as in extremely cold regions, low-temperature alloy steel may be used to avoid cold brittleness.

[0062] When using the docking positioning device for SF6 gas-insulated switchgear, use hoisting equipment to slowly move the components to make the two docking surfaces parallel with a distance of about 10-20mm. Use guide rods or temporary clamps to assist in the initial alignment and reduce the difficulty of fine adjustment.

[0063] Single-sided insertion method: Insert one side of the positioning pin first, and use its guiding effect to adjust the position of the other side; Double-sided synchronous method: Insert both sides of the positioning pin simultaneously, requiring high coordination, suitable for precision docking. It is strictly forbidden to strike the positioning pins. If resistance is encountered, stop immediately and check the cause (such as foreign objects or misalignment). To accommodate docking surfaces of different diameters, this SF6 gas-insulated switchgear docking positioning device can be manufactured in various diameter specifications.

[0064] This utility model relates to a docking and positioning device for SF6 gas-insulated switchgear, which enables precise alignment of docking surfaces, ensuring accurate mechanical and electrical connections of components such as busbars, circuit breakers, and disconnectors, thus preventing electric field distortion or seal failure caused by misalignment. It simplifies installation; in high-precision assembly scenarios (such as those requiring micron-level tolerances), the positioning pins reduce manual adjustment time and improve efficiency. Through the guiding action of the positioning pins, modular installation is achieved, reducing the risk of human error.

[0065] Based on on-site installation statistics of SF6 gas-insulated switchgear in substations, the screw hole diameters on the mating surfaces of Xi'an High Voltage Switchgear Co., Ltd.'s 750kV SF6 gas-insulated switchgear are 24mm, those of 330kV SF6 gas-insulated switchgear are 18mm, and those of 110kV SF6 gas-insulated switchgear are 14mm; the screw hole diameters on the mating surfaces of Pingdingshan High Voltage Switchgear Co., Ltd.'s 750kV SF6 gas-insulated switchgear are 24mm, and those of 330kV SF6 gas-insulated switchgear are 14mm; and the screw hole diameters on the mating surfaces of Shanghai Siyuan High Voltage Switchgear Co., Ltd.'s 330kV SF6 gas-insulated switchgear are 18mm, and those of 110kV SF6 gas-insulated switchgear are 14mm.

[0066] The three diameters of 24mm, 18mm and 14mm are common, so cylindrical locating pins of Φ23.5mm, Φ17.5mm and Φ13.5mm can be made respectively.

[0067] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, apparatuses, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0068] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A combined SF6 gas-insulated switchgear docking and positioning device, characterized in that, The combined SF6 gas-insulated switchgear docking and positioning device includes a positioning rod (1), a handle (2), and a connecting component. The connecting component is disposed between the positioning rod (1) and the handle (2) to detachably connect the positioning rod (1) and the handle (2). The positioning rod (1) is equipped with multiple different specifications to adapt to the different through holes of the combined SF6 gas-insulated switchgear.

2. The combined SF6 gas-insulated switchgear docking and positioning device according to claim 1, characterized in that, The positioning rod (1) has an extension (11) at one end facing the handle (2). The cross-section of the extension (11) is the same as the cross-section of the handle (2) and has the same area. The connecting component is disposed between the positioning rod (1) and the handle (2).

3. The combined SF6 gas-insulated switchgear docking and positioning device according to claim 2, characterized in that, The connecting assembly includes a first insert post (21) constructed on the handle (2) toward the end of the extension (11) and a first insert hole (111) constructed on the extension (11) toward the end of the handle (2), the first insert hole (111) having a first internal thread and the first insert post (21) having a first external thread adapted to the first internal thread.

4. The combined SF6 gas-insulated switchgear docking and positioning device according to claim 2, characterized in that, The connecting assembly includes a second insert post (112) constructed on the extension (11) toward the handle (2) and a second insert hole (22) constructed on the handle (2) toward the extension (11), the second insert hole (22) having a second internal thread and the second insert post (112) having a second external thread adapted to the second internal thread.

5. The combined SF6 gas-insulated switchgear docking and positioning device according to claim 2, characterized in that, The connecting assembly includes a third insertion hole (113) constructed on the extension (11) facing the handle (2), a fourth insertion hole (23) constructed on the handle (2) facing the extension (11), and a locking member (31) with both ends inserted into the third insertion hole (113) and the fourth insertion hole (23), respectively. The third insertion hole (113) and the fourth insertion hole (23) are provided with a third internal thread, and the locking member (31) is provided with a third external thread adapted to the third internal thread.

6. The combined SF6 gas-insulated switchgear docking and positioning device according to claim 5, characterized in that, The locking member (31) is located in the middle and has at least two chordal surfaces (311) arranged in parallel.

7. The combined SF6 gas-insulated switchgear docking and positioning device according to claim 1, characterized in that, The handle (2) is a regular polygonal column structure.

8. The combined SF6 gas-insulated switchgear docking and positioning device according to claim 1, characterized in that, The positioning rod (1) is a cylindrical structure.

9. The combined SF6 gas-insulated switchgear docking and positioning device according to claim 7, characterized in that, The outer diameter of the positioning rod (1) is Φ23.5mm, Φ17.5mm, Φ13.5mm or Φ10mm, respectively, to fit the through holes of Φ24mm, Φ18mm, Φ14mm or Φ10.5mm of the combined SF6 gas-insulated switchgear.

10. The combined SF6 gas-insulated switchgear docking and positioning device according to claim 1, characterized in that, The end of the positioning rod (1) away from the handle (2) is constructed with a chamfer to form a guide section (12).

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