A device for assembling and disassembling the insulating pull rod of a blind hole of a gas tank of a gas insulated switchgear

Abstract

The utility model discloses a device for gas insulation switchgear gas tank blind hole installs and uninstalls insulating pull rod, including the frame and with its lateral wall welding end plate, the upper and lower of frame all are processed with the groove of bevel groove, the outer wall of frame is equipped with the connecting mechanism, the utility model relates to gas insulation switchgear assembly technical field, utilize this directly inserted mounting hole locking insulating pull rod and carry out dismounting, compared with traditional operation mode, save many operation steps, simple operation, do not destroy the balance and the link of original installation component, can separate dismount the insulating pull rod of suspected or certain problem, do not need to dismount all three groups of pull rod assembly parts, the whole of all parts of the device, need not dismount or seek the auxiliary tool, the device is welded after the bending of sheet metal, installs two long screw rods and two fastening bolts, simple material, the production cost is lower, and simple and convenient operation.

Description

Technical Field

[0001] This utility model relates to the field of gas-insulated switchgear assembly technology, specifically a device for installing and removing insulating tie rods through blind holes in gas boxes of gas-insulated switchgear. Background Technology

[0002] In recent years, with the increasing demands for energy conservation, environmental protection, and safety, and the continuous increase in investment, the production processes of various equipment have become increasingly complex and difficult. To adapt to the development of productivity, enterprises are constantly optimizing the entire product lifecycle process, especially in the manufacturing process. The installation of the insulating tie rod inside the gas box of a gas-insulated switchgear is usually completed before the gas box cover is closed. Afterwards, the box is sealed and filled with gas. The installed insulating tie rod passes through the gas box mounting hole via a corrugated pipe, with the metal bolts outside the gas box, and the insulating part sealed inside the gas box.

[0003] During equipment commissioning, when a problem is suspected or confirmed in the insulating tie rod body, it is necessary to remove the insulating tie rod body for inspection. At this time, it is necessary to release the pressure of the gas box, then remove the sealing plate, busbar and other obstacles to remove the tie rod. This process is cumbersome and can easily damage the balance and connection of the already installed components. In order to address these issues, simplify the process, improve efficiency, and minimize the impact on the balance and connection of the installed components, a device for installing and removing insulating tie rods through the blind hole of the gas box of gas-insulated switchgear has been invented. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a device for installing and removing insulating tie rods in the blind holes of gas boxes in gas-insulated switchgear, which solves the problem of cumbersome disassembly of insulating tie rods in existing technologies.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a device for installing and removing insulating pull rods in the blind hole of the gas box of a gas-insulated switchgear, comprising a frame and an end plate welded to its side wall, wherein beveled grooves are machined on both the upper and lower sides of the frame, and a connecting mechanism is installed on the outer wall of the frame; The connecting mechanism includes a handle installed on the outer wall of the bottom end of the frame. The front and rear ends of the handle are machined with pull-out slides and fixing holes. A hand screw is installed in the fixing hole and is threaded to the frame. A fastening bolt is slidably connected inside the beveled groove. The arc-shaped surface of the fastening bolt is machined with a threaded hole, and a long screw is threaded to the fastening bolt through this threaded hole. The outer wall of the long screw is slidably connected to the opening of the frame. The fastening bolt is threaded to the long screw through an upper locking nut.

[0006] Preferably, the outer side of the long screw is threaded with a long screw locking nut, and the outer wall of the long screw locking nut is in contact with the side wall of the end plate.

[0007] Preferably, a shoulder bolt is installed inside the pull-out slide, and the shoulder bolt is threadedly connected to the frame.

[0008] Preferably, the fastening bolt has a large flat portion and a small flat portion machined at both ends, and a cylindrical pin mounting hole machined on the front end face of the fastening bolt.

[0009] Preferably, a cylindrical pin that abuts against the long screw is installed in the cylindrical pin mounting hole of the fastening bolt.

[0010] Beneficial effects This utility model provides a device for installing and removing insulating tie rods through blind holes in gas boxes of gas-insulated switchgear, which has the following beneficial effects: 1) The installation and disassembly are carried out by using the insulating pull rod that can be directly inserted into the mounting hole for locking. Compared with the traditional operation method, it saves many operation steps, and the operation is simple and does not damage the balance and connection of the original installation components. 2) Suspected or confirmed faulty insulating tie rods can be disassembled individually without disassembling all three tie rod assembly components; 3) All components of this device are assembled as a whole, requiring no disassembly or additional auxiliary tools; 4) This device is made by bending sheet metal and welding it into a whole, and installing two long screws and two fastening bolts. The materials are simple, the manufacturing cost is low, and the operation is simple and convenient. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a plan view of the present invention.

[0013] Figure 3 This is a planar sectional view of the present invention.

[0014] Figure 4 This is a partially enlarged schematic diagram of the frame in this utility model.

[0015] Figure 5 This is a partially enlarged schematic diagram of the handle in this utility model.

[0016] Figure 6 This is a partially enlarged schematic diagram of the fastening bolt in this utility model.

[0017] In the diagram: 1. Frame; 2. End plate; 3. Cylindrical pin; 4. Handle; 5. Hand screw; 6. Shoulder screw; 7. Long screw; 8. Long screw lock nut; 9. Upper lock nut; 10. Fastening bolt; 11. Beveled groove; 12. Large flat surface; 13. Threaded hole; 14. Small flat surface; 15. Cylindrical pin mounting hole; 16. Pull-out slide; 17. Fixed side hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-6 This utility model provides a technical solution: a device for installing and removing insulating pull rods in the blind hole of the gas box of a gas-insulated switchgear, including a frame 1 and an end plate 2 welded to its side wall. The upper and lower sides of the frame 1 are both machined with beveled grooves 11, and a connecting mechanism is installed on the outer wall of the frame 1. The connecting mechanism includes a handle 4 installed on the outer wall of the bottom end of the frame 1. The front and rear ends of the handle 4 are machined with a pull-out slide 16 and a fixing edge hole 17. A hand screw 5 is installed in the fixing edge hole 17 and is threaded to the frame 1. A fastening bolt 10 is slidably connected inside the beveled groove 11. The arc-shaped surface of the fastening bolt 10 is machined with a threaded hole 13, and a long screw 7 is threaded to the fastening bolt 10 through this threaded hole 13. The outer wall of the long screw 7 is slidably connected to the opening of the frame 1. The fastening bolt 10 is threaded to the long screw 7 through an upper locking nut 9. The frame 1, handle 3 and end plate 2 are made of stainless steel sheet. The surface of the frame 1 is grooved for installing fastening bolts 2 and cylindrical pins 3. The end is open to facilitate the installation of fastening bolts 2. The two frames 1 are welded together to form the main frame. The surface of the handle 4 is grooved and fixed to the frame 1 by hand screws 5. When the device is not in use, the handle 4 can be retracted and pulled out when in use.

[0020] In this embodiment, the long screw 7 is further configured to have a long screw locking nut 8 threadedly connected to its outer side, and the outer wall of the long screw locking nut 8 is in contact with the side wall of the end plate 2. The cylindrical surface of the long screw 7 is machined with a parallel plane at an appropriate position for wrench clamping and easy locking. At the same time, the long screw locking nut 8 is used to pull and lock the long screw 8 when clamping the workpiece.

[0021] In this embodiment, a shoulder bolt 6 is installed inside the pull-out slide 16, and the shoulder bolt 6 is threadedly connected to the frame 1. Shoulder screws 6 are mounted on the frame 1 to mount handle 4 and provide a rotation axis for handle 4.

[0022] In this embodiment, the fastening bolt 10 is further configured such that a large flat portion 12 and a small flat portion 14 are respectively machined at both ends, and a cylindrical pin mounting hole 15 is machined on the front end face of the fastening bolt 10. Two parallel planes are milled on the cylindrical surface of the fastening bolt 10. The smaller plane 14 contacts the workpiece being clamped and is used to lock the workpiece, while the larger plane 12 is used to avoid the frame 1. A threaded hole 13 is machined on the cylindrical surface for mounting the long screw 7. A through hole is machined along the axial direction for mounting the cylindrical pin 3.

[0023] In this embodiment, the cylindrical pin 3 that abuts against the long screw 7 is installed in the cylindrical pin mounting hole 15 of the fastening bolt 10. The cylindrical pin 3 passes through the frame 1 and the fastening bolt 10 respectively to assemble the three parts. The long screw 7 is tightened to fix the cylindrical pin 3.

[0024] It is worth noting that all standard parts used in this utility model can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The models of electrical structure equipment involved can be selected according to the user's needs, as long as they meet the requirements of this application. In addition, the circuit connection adopts conventional connection methods in the prior art. The control, current detection, position feedback, predicted voltage synchronization, and parameter adjustment of the electrical equipment are all existing technologies and will not be described in detail here. All contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0025] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0026] Example: When this device is needed, the components can be assembled according to the diagram according to the assembly process, ensuring that the bolts are tightened and the welding is firm. Then, each component is cleaned. After that, the corrugated pipe corresponding to the suspected or confirmed problem insulating rod on the gas-insulated switchgear is removed. Loosen the long screw locking nut 8, push the fastening bolt 10 to the end, loosen the hand screw 5, pull out the handle 4, insert the device into the gas box, align the square part of the insulating rod, tighten the two long screws 7 of the device, tighten the long screw locking nut 8, pull the handle open to be perpendicular to the device body, rotate the handle counterclockwise, unscrew the insulating rod and take it out. When installing the pull rod, loosen the long screw locking nut 8, push the fastening bolt 10 to the end, loosen the hand screw 5, pull out the handle 4, insert one end of the long bolt of the insulating pull rod to be assembled into this device, align it with the square part of the insulating pull rod, tighten the two long screws 7 of this device, tighten the long screw locking nut 8, insert this device and the insulating pull rod together into the air box, align the insulating pull rod and the bolt in the air box, pull the handle 4 out to be perpendicular to the device body, rotate the handle 4 clockwise until it is tightened, then loosen the long screw locking nut 8, push the fastening bolt 10 to the end, and remove this device.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for installing and removing insulating pull rods through blind holes in gas-insulated switchgear, comprising a frame (1) and an end plate (2) welded to its side wall, characterized in that: The upper and lower sides of the frame (1) are both machined with beveled grooves (11), and the outer wall of the frame (1) is equipped with a connecting mechanism. The connecting mechanism includes a handle (4) installed on the outer wall of the bottom end of the frame (1). The front and rear ends of the handle (4) are machined with a pull slide (16) and a fixing hole (17). A hand screw (5) is installed in the fixing hole (17) and the hand screw (5) is threadedly connected to the frame (1). A fastening bolt (10) is slidably connected inside the bevel groove (11). The arc surface of the fastening bolt (10) is machined with a threaded hole (13), and the long screw (7) is threadedly connected to the fastening bolt (10) through this threaded hole (13). The outer wall of the long screw (7) is slidably connected to the opening of the frame (1). The fastening bolt (10) is threadedly connected to the long screw (7) through an upper locking nut (9).

2. The device for installing and removing insulating tie rods through blind holes in gas boxes of gas-insulated switchgear according to claim 1, characterized in that, The long screw (7) is threaded with a long screw locking nut (8) on its outer side, and the outer wall of the long screw locking nut (8) is in contact with the side wall of the end plate (2).

3. The device for installing and removing insulating tie rods through blind holes in gas boxes of gas-insulated switchgear according to claim 1, characterized in that, The pull-out slide (16) is equipped with a shoulder bolt (6), and the shoulder bolt (6) is threadedly connected to the frame (1).

4. The device for installing and removing insulating tie rods through blind holes in gas boxes of gas-insulated switchgear according to claim 1, characterized in that, The fastening bolt (10) has a large flat surface (12) and a small flat surface (14) machined at both ends, and a cylindrical pin mounting hole (15) machined on the front end face of the fastening bolt (10).

5. The device for installing and removing insulating tie rods through blind holes in gas boxes of gas-insulated switchgear according to claim 1, characterized in that, The cylindrical pin (3) that abuts against the long screw (7) is installed in the cylindrical pin mounting hole (15) of the fastening bolt (10).

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