Triple-flanged combined electrical apparatus observation window replacement device

Abstract

This application provides a three-flange type combined electrical appliance observation window replacement device, comprising: a three-flange type combined electrical appliance observation window, the three-flange type combined electrical appliance observation window including a monitoring flange, a support flange, and a sealing flange, wherein the sealing flange is connected to the housing of the combined electrical appliance observation window, the monitoring flange is connected to the observation window glass, and the support flange is installed between the sealing flange and the monitoring flange; and multiple replacement accessories, which are respectively installed on the circumference of the support flange and the monitoring flange. By setting the monitoring flange, support flange, and sealing flange on the three-flange type combined electrical appliance observation window in this way, the steps for replacing the observation window glass can be reduced, solving the technical problems of inconvenient replacement of combined electrical appliance observation windows in the prior art and the easy entry of airborne particles into the combined electrical appliance during replacement.

Description

Technical Field

[0001] This application relates to the field of electrical equipment, specifically to a three-flange type combined electrical appliance observation window replacement device. Background Technology

[0002] Combined electrical equipment, as a widely used type of electrical device, has advantages such as small footprint, high insulation strength, strong resistance to external interference, and stable operation, and is widely used in substations. As a fully enclosed type of combined electrical equipment, while advanced sensing devices such as partial discharge sensors, ultrasonic sensors, and micro-water sensors can provide a comprehensive understanding of the equipment's operation, on-site personnel lack a more intuitive understanding of its operating status. Therefore, the observation window of the combined electrical equipment is crucial for on-site personnel to understand the equipment's operating status.

[0003] Currently, the observation window of combined electrical equipment typically adopts a closed single-flange structure, generally consisting of five parts: a single flange, a pressure ring rubber gasket, the observation window glass, the pressure ring rubber gasket, and the combined electrical equipment housing. After being installed in sequence, the single flange and the combined electrical equipment housing are locked together by six short external hex bolts. Although this ensures the airtightness of the combined electrical equipment, the replacement process is cumbersome when the observation window glass cracks. It requires first evacuating the combined electrical equipment, then loosening the six short external hex bolts, and then disassembling the single flange, pressure ring rubber gasket, observation window glass, and pressure ring rubber gasket in sequence. The combined electrical equipment housing exposed to the air is then wrapped with plastic film or silicone to prevent air and airborne particles from entering the combined electrical equipment and affecting its operation. However, with the increase in the amount of work and the limited energy and skills of the operators, problems such as particles entering the combined electrical equipment or the pressure ring rubber gasket accidentally falling into the combined electrical equipment are very easy to occur, leading to various unexpected problems in the combined electrical equipment before it is put into operation after repair. Summary of the Invention

[0004] In view of this, this application provides a three-flange type combined electrical appliance observation window replacement device, which solves the technical problems in the prior art where it is inconvenient to replace the combined electrical appliance observation window and particulate matter in the air can easily enter the combined electrical appliance during replacement.

[0005] According to one aspect of this application, a three-flange type combined electrical appliance observation window replacement device is provided, characterized in that it includes: a three-flange type combined electrical observation window, the three-flange type combined electrical observation window including a monitoring flange, a support flange and a closing flange, wherein the closing flange is connected to the housing of the combined electrical appliance observation window, the monitoring flange is connected to the observation window glass, and the support flange is installed between the closing flange and the monitoring flange; and a plurality of replacement accessories, at least one of the plurality of replacement accessories is installed on the circumference of the support flange, and the remaining replacement accessories are installed on the circumference of the monitoring flange.

[0006] In one embodiment of this application, a first rubber ring is provided between the sealing flange and the housing of the observation window of the combined electrical appliance; a second rubber ring is provided between the supporting flange and the monitoring flange; a pressure ring rubber gasket is provided between the monitoring flange and the observation window glass; and a pressure ring rubber gasket is provided between the supporting flange and the observation window glass.

[0007] In one embodiment of this application, the sealing flange includes: a sealing flange body; a plurality of first bolt holes disposed on the sealing flange body; and a plurality of second bolt holes disposed on the sealing flange body;

[0008] Multiple first long hexagonal bolts, which can pass through the first bolt holes; multiple first short hexagonal bolts, which can pass through the second bolt holes; wherein, the multiple first long hexagonal bolts pass through the multiple first bolt holes respectively, and the multiple first short hexagonal bolts pass through the multiple second bolt holes respectively, so that the closed flange is locked and connected to the housing of the combined electrical appliance observation window.

[0009] In one embodiment of this application, the closed flange body has a rotatable sealing structure, which is in the open state during normal operation of the combined electrical appliance, making it convenient to observe the internal operating status of the combined electrical appliance through the observation window glass. When the observation window glass of the combined electrical appliance is replaced, it is in the sealed state, reducing the entry of airborne particles into the combined electrical appliance during replacement.

[0010] In one embodiment of this application, the sealing flange further includes: an adjustment knob connected to the rotatable sealing structure; the rotatable sealing structure is a circular silicon steel sheet with a diameter smaller than the inner diameter of the sealing flange; the adjustment knob is configured to control the opening or closing of the rotatable sealing structure.

[0011] In one embodiment of this application, the sealing flange further includes a silicone rubber pad disposed around the rotatable sealing structure. The silicone rubber pad is used to reduce the friction between the rotatable sealing structure and the sealing flange during rotation, thereby enhancing the sealing effect of the rotatable sealing structure on the SF6 gas inside the combined appliance.

[0012] In one embodiment of this application, the replacement accessory includes: a first base, the first base having a first through hole adapted to a nut, the first base being fixed to the support flange and / or monitoring flange through the first through hole and the nut; a first connecting rod with one end fixed to the other end of the first base; and a misaligned structure with one end fixed to the other end of the first connecting rod, the misaligned structure being detachably connected to the first connecting rod.

[0013] In one embodiment of this application, the replacement accessory further includes: a fixing rod connected to the other end of the misaligned structure, the fixing rod being rotatably mounted on the misaligned structure, and / or the fixing rod being a telescopic fixing rod; and a soft plastic suction cup fixed to the fixing rod, the soft plastic suction cup being adsorbed onto the observation window glass.

[0014] In one embodiment of this application, a monitoring device is provided on the monitoring flange; wherein, the monitoring device includes: a second base, the second base having a second through hole adapted to a nut, the second base being fixed to the monitoring flange through the second through hole and the nut; a second connecting rod with one end fixed to the second base; and an observation device fixed to the other end of the second connecting rod.

[0015] In one embodiment of this application, a plurality of replacement accessories are evenly spaced on the circumference of the support flange; and / or a plurality of replacement accessories are evenly spaced on the circumference of the monitoring flange; wherein the replacement accessories installed on the support flange and the replacement accessories installed on the monitoring flange have opposite installation directions.

[0016] Compared to existing technologies, this application provides a three-flange type combined electrical appliance observation window replacement device, comprising: a three-flange type combined electrical appliance observation window, the three-flange type combined electrical appliance observation window including a monitoring flange, a support flange, and a sealing flange, wherein the sealing flange is connected to the housing of the combined electrical appliance observation window, the monitoring flange is connected to the observation window glass, and the support flange is installed between the sealing flange and the monitoring flange; and a plurality of replacement accessories are installed at intervals on the circumference of the support flange and the monitoring flange. By setting the monitoring flange, support flange, and sealing flange on the three-flange type combined electrical appliance observation window in this way, the steps for replacing the observation window glass can be reduced, solving the technical problems of inconvenient replacement of combined electrical appliance observation windows in existing technologies and the easy entry of airborne particles into the combined electrical appliance during replacement. Attached Figure Description

[0017] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0018] Figure 1 The diagram shown is a structural schematic of a three-flange combined electrical appliance observation window replacement device provided in an embodiment of this application;

[0019] Figure 2 The diagram shown is a schematic diagram of the closed flange involved in the three-flange combined electrical appliance observation window replacement device provided in an embodiment of this application;

[0020] Figure 3 The diagram shown is a schematic diagram of the adjustment knob involved in the three-flange combined electrical appliance observation window replacement device provided in an embodiment of this application;

[0021] Figure 4 The diagram shown is a structural schematic of the replacement accessories involved in the three-flange combined electrical appliance observation window replacement device provided in an embodiment of this application.

[0022] Figure 5 The diagram shown is a structural schematic of the monitoring device involved in the three-flange combined electrical appliance observation window replacement device provided in an embodiment of this application;

[0023] Figure 6 The diagram shown is a structural schematic of the supporting flange involved in the three-flange combined electrical appliance observation window replacement device provided in an embodiment of this application;

[0024] Figure 7 The diagram shown is a schematic diagram of the closed flange involved in the three-flange combined electrical appliance observation window replacement device provided in an embodiment of this application;

[0025] Figure 8 The diagram shown is a structural schematic of the closed flange involved in the observation window replacement device for a three-flange combined electrical appliance provided in an embodiment of this application.

[0026] Figure label:

[0027] 26-Housing of the observation window of the combined electrical appliance; 22-Monitoring flange; 23-Supporting flange; 24-Sealing flange; 27-First long external hexagonal bolt; 28-First short external hexagonal bolt; 24-1-Adjusting knob; 24-2-Rotable sealing structure; 24-3-Silicone rubber gasket; 25-1-First rubber ring; 25-2-Second rubber ring; 291-Second long external hexagonal bolt; 292-Second short external hexagonal bolt; 293-Mounting through hole; 33-Replacement accessory; 35-First base; 32-First through hole; 38-First nut; 37-First connecting rod; 40-Second nut; 41-Fixing rod; 39-Misalignment structure; 43-Soft plastic suction cup; 34-Monitoring device; 341-Second base; 342-Second connecting rod; 343-Second through hole; 344-Observation lamp; 345-Camera device. Detailed Implementation

[0028] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, top, bottom, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0029] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0031] Figure 1-3 The diagram shown is a structural schematic of a three-flange combined electrical appliance observation window replacement device according to an embodiment of this application; as shown Figure 1-3 As shown, the three-flange type combined electrical appliance observation window replacement device involved in this embodiment includes:

[0032] Three-flange combined electrical observation window and replacement accessories 33. The three-flange combined electrical observation window is equipped with observation window glass, through which on-site personnel can observe the status of the internal combined electrical equipment.

[0033] In this embodiment, the three-flange combined electrical observation window includes a monitoring flange 22, a support flange 23, and a sealing flange 24 connected in sequence. The sealing flange 24 is connected to the housing 26 of the combined electrical observation window, the monitoring flange 22 is connected to the observation window glass, and the support flange 23 is installed between the sealing flange 24 and the monitoring flange 22. To ensure the sealing between the flanges, a sealing gasket, such as a rubber ring, is placed between adjacent flanges, and the shape of the rubber ring matches the shape of the flange. Specifically, a first rubber ring 25-1 (e.g., an O-ring) is provided between the sealing flange 24 and the housing 26 of the combined electrical observation window; a second rubber ring 25-2 (e.g., an O-ring) is provided between the support flange 23 and the sealing flange 24; a pressure ring rubber ring is provided between the monitoring flange 22 and the observation window glass, and a pressure ring rubber ring is provided between the support flange 23 and the observation window glass.

[0034] The three-flange combined electrical appliance observation window replacement device also includes multiple replacement accessories 33 spaced apart on the circumference of the support flange 23 and the monitoring flange 22. Specifically, the support flange 23 and the monitoring flange 22 are provided with mounting through holes, through which the replacement accessories 33 are installed on the support flange 23 and the monitoring flange 22.

[0035] Specifically, the connection method between the sealing flange 24, the supporting flange 23, and the monitoring flange 22 is as follows:

[0036] Figure 7 The diagram shown is a structural schematic of the sealing flange 24 involved in a three-flange combined electrical appliance observation window replacement device provided in an embodiment of this application. Figure 7As shown, the sealing flange 24 includes a sealing flange body, a plurality of first bolt holes (which are also located on the housing 26 of the combined electrical appliance observation window) on the sealing flange body, a plurality of first long hexagonal bolts 27 adapted to the first bolt holes, a plurality of second bolt holes (which are also located on the supporting flange 23), and a plurality of first short hexagonal bolts 28 adapted to the second bolt holes. The plurality of first long hexagonal bolts 27 pass through the first bolt holes on the sealing flange 24 and the housing 26 of the combined electrical appliance observation window to secure the sealing flange 24 to the housing 26 of the combined electrical appliance observation window. The plurality of first short hexagonal bolts 28 pass through the second bolt holes on the sealing flange 24 and the supporting flange 23 to secure the sealing flange 24 and the supporting flange 23.

[0037] Similarly, Figure 6 The diagram shown is a structural schematic of the supporting flange 23 involved in a three-flange combined electrical appliance observation window replacement device provided in an embodiment of this application. Figure 6 As shown, the support flange 23 includes a support flange body, multiple third bolt holes (also located on the closing flange 24) on the support flange body, multiple second long hexagonal bolts 291 adapted to the third bolt holes, multiple fourth bolt holes (also located on the monitoring flange 22), and multiple second short hexagonal bolts 292 adapted to the fourth bolt holes. The multiple second long hexagonal bolts pass through the third bolt holes on the support flange 23 and the closing flange 24 respectively to secure the closing flange 24 and the support flange 23. The multiple second short hexagonal bolts pass through the fourth bolt holes on the closing flange 24 and the monitoring flange 22 respectively to secure the support flange 23 and the monitoring flange 22.

[0038] Similarly, the monitoring flange 22 includes a monitoring flange body, a plurality of fifth bolt holes provided on the monitoring flange body (the fifth bolt holes are also provided on the support flange 23) and a plurality of third long external hexagonal bolts adapted to the fifth bolt holes. The third long external hexagonal bolts pass through the fifth bolt holes provided on the support flange 23 and the monitoring flange 22 to fix the monitoring flange 22 and the support flange 23.

[0039] The support flange 23 and the monitoring flange 22 also include a mounting through hole 293 for installing and replacing the auxiliary part 33.

[0040] Optionally, the first bolt hole on the sealing flange 24, the third bolt hole on the supporting flange 23, and the fifth bolt hole on the monitoring flange 22 can be the same bolt hole, that is, the first bolt hole, the third bolt hole, and the fifth bolt hole are coaxial and have the same radius. A single long hexagonal bolt can be used to pass through the first bolt hole, the third bolt hole, and the fifth bolt hole to fix the sealing flange 24, the supporting flange 23, and the monitoring flange 22.

[0041] Similarly, the second bolt hole on the sealing flange 24 and the fourth bolt hole on the supporting flange 23 can also be the same bolt hole, that is, the second bolt hole and the fourth bolt hole are coaxial and have the same radius. A short external hex bolt can be used to pass through the second bolt hole and the fourth bolt hole to fix the sealing flange 24, the supporting flange 23 and the monitoring flange 22.

[0042] In one embodiment of this application, Figure 7-8 The diagram shown is a structural schematic of the sealing flange 24 involved in a three-flange combined electrical appliance observation window replacement device provided in an embodiment of this application. Figure 7-8 As shown, the sealed flange body has a rotatable sealing structure 24-2. The sealed flange body with the rotatable sealing structure 24-2 is in the open state during normal operation of the combined electrical appliance, facilitating observation of the internal operating status of the combined electrical appliance through the observation window glass. When replacing the observation window glass of the combined electrical appliance, it is in a sealed state, reducing the entry of airborne particles into the combined electrical appliance during replacement.

[0043] Optionally, the sealing flange 24 further includes an adjusting knob 24-1, which is connected to the rotatable sealing structure 24-2. The adjusting knob 24-1 is configured to control the opening or closing of the rotatable sealing structure 24-2. The user can directly rotate the adjusting knob 24-1 to open or close the rotatable sealing structure 24-2, thereby opening or closing the sealing flange 24.

[0044] Optionally, the rotatable sealing structure 24-2 is a circular steel-silicon sheet, and the diameter of the rotatable sealing structure 24-2 is slightly smaller than the inner diameter of the sealing flange 24. Optionally, the sealing flange 24 also includes a silicone rubber gasket 24-3 disposed around the rotatable sealing structure 24-2. The outer silicone rubber gasket 24-3 is used to reduce the friction between the rotatable sealing structure 24-2 and the sealing flange 24 during rotation. The silicone rubber gasket 24-3 can alleviate damage caused by friction when the rotatable sealing structure 24-2 rotates relative to the sealing flange body, and strengthen the sealing effect of the rotatable sealing structure 24-2 on the SF6 gas inside the combined electrical appliance.

[0045] In one embodiment of this application, Figure 4The diagram shown is a structural schematic of the replacement accessory 33 involved in the three-flange combined electrical appliance observation window replacement device provided in an embodiment of this application. Figure 4 As shown, replacing accessory 33 includes:

[0046] A first base 35 has a first through hole 32, which is adapted to a nut. The first base 35 is fixed to the support flange 23 and / or the monitoring flange 22 through the first through hole 32 and the nut. That is, the nut passes through the first through hole 32 and the mounting through hole provided on the support flange 23 to fix the first base 35 to the support flange 23. Similarly, the nut passes through the first through hole 32 and the mounting through hole provided on the monitoring flange 22 to fix the first base 35 to the monitoring flange 22.

[0047] A first connecting rod 37, one end of which is fixed to the other end of the first base 35, specifically, the other end of the first base 35 can be detachably connected to one end of the first connecting rod 37 via a first nut 38;

[0048] A misaligned structure 39 is fixed at one end to the other end of the first connecting rod 37. The misaligned structure 39 is detachably connected to the first connecting rod 37. Specifically, one end of the misaligned structure 39 can be detachably connected to the second end of the first connecting rod 37 via a second nut 40. By removing the second nut 40, the first connecting rod 37 can be separated from the misaligned structure 39, thereby allowing the replacement of the pressure ring rubber gasket on the observation window glass.

[0049] Optional, such as Figure 4 As shown, the replacement accessory 33 also includes: a fixing rod 41 connected to the other end of the misalignment structure 39; and a soft plastic suction cup 43 fixed to the fixing rod 41, which adheres to the observation window glass. Specifically, the fixing rod 41 is rotatable relative to the misalignment structure 39, and the fixing rod 41 can also be a telescopic rod that can extend and retract.

[0050] In one embodiment of this application, Figure 5 The diagram shown is a structural schematic of the monitoring device 34 involved in the three-flange combined electrical appliance observation window replacement device provided in an embodiment of this application. Figure 5 As shown, a monitoring device 34 is installed on the monitoring flange 22; wherein, the monitoring device 34 includes:

[0051] The second base 341 has a second through hole 343, which is adapted to a nut. The nut passes through the second through hole 343 and the mounting through hole provided on the monitoring flange 22 to fix the second base 341 to the monitoring flange 22.

[0052] A second connecting rod 342, one end of which is fixed to the second base 341; and

[0053] An observation device is fixed to the other end of the second connecting rod 342. The observation device includes an observation light 344 and a camera device 345. The observation light 344 is used to monitor the internal electrical equipment, and the camera device 345 is connected to a remote control device to capture real-time images of the internal electrical equipment.

[0054] In one embodiment of this application, as Figure 2 As shown, multiple replacement accessories 33 are evenly spaced on the circumference of the support flange 23, and multiple replacement accessories 33 are evenly spaced on the circumference of the monitoring flange 22; wherein, the replacement accessories 33 installed on the support flange 23 and the replacement accessories 33 installed on the monitoring flange 22 are installed in opposite directions. Generally, replacement accessories 33 installed on the support flange 23 and the monitoring flange 22 can be arranged at intervals.

[0055] This application provides a three-flange type combined electrical appliance observation window replacement device, including: a three-flange type combined electrical appliance observation window, comprising a monitoring flange 22, a support flange 23, and a sealing flange 24, wherein the sealing flange 24 is connected to the housing 26 of the combined electrical appliance observation window, the monitoring flange 22 is connected to the observation window glass, and the support flange 23 is installed between the sealing flange 24 and the monitoring flange 22; and a plurality of replacement accessories 33 are installed at intervals on the circumference of the support flange 23 and the monitoring flange 22. By placing the monitoring flange 22, the support flange 23, and the sealing flange 24 on the three-flange type combined electrical appliance observation window, the steps for replacing the observation window glass can be reduced, solving the technical problems of inconvenient replacement of combined electrical appliance observation windows in the prior art and the easy entry of airborne particles into the combined electrical appliance during replacement.

[0056] Based on the above-mentioned three-flange type combined electrical appliance observation window replacement device, this application also provides a method of using the three-flange type combined electrical appliance observation window replacement device, the method including the following steps:

[0057] S1: Evacuate the combined electrical unit whose observation window needs to be replaced to ensure that there is no residual sulfur hexafluoride gas inside the combined electrical unit and to avoid injury to the operator.

[0058] S2: Tighten the adjusting knob 24-1 above the sealing flange 24. By adjusting the knob 24-1, the rotatable sealing structure 24-2 in the sealing flange 24 is controlled to rotate relative to the sealing flange body until the sealing flange 24 is closed, preventing airborne particles from entering the interior of the combined electrical equipment. If dust or other particles enter the interior of the combined electrical equipment, it will affect the operation of the combined electrical equipment.

[0059] S3: Loosen the long external hex bolts connecting the monitoring flange 22, support flange 23, sealing flange 24 and the housing 26 of the combined electrical appliance observation window, keep the short external hex bolts connecting the sealing flange 24 and the housing 26 of the combined electrical appliance observation window in place, and after the support flange 23, monitoring flange 22 and sealing flange 24 are at a certain distance, tighten the long external hex bolts connecting the sealing flange 24, support flange 23, monitoring flange 22 and the housing 26 of the combined electrical appliance observation window, so that the connection structure of the support flange 23 and monitoring flange 22 is in a suspended state;

[0060] S4: Install replacement accessories 33 at intervals on the pre-drilled mounting holes on the circumference of the support flange 23 and the monitoring flange 22. Adjust the first connecting rod 37 and the fixed rod 41 that can be rotated and stretched by adjusting the angle of the replacement accessories 33. Use the soft plastic suction cup 43 of the replacement accessories 33 to hold the observation window glass of the combined electrical appliance. After confirming that the observation window can be suspended, unscrew the short external hex bolts between the support flange 23 and the monitoring flange 22 to separate the support flange 23 from the monitoring flange 22, exposing the structure of the support flange 23, the first rubber ring 25-1, the observation window glass of the combined electrical appliance, the pressure ring rubber gasket, and the monitoring flange 22.

[0061] S5: Sequentially open the second nut 40 in the middle of the first connecting rod 37 of the replacement accessory 33 installed on the circumference of the support flange 23 and the monitoring flange 22, replace the pressure ring rubber gasket in sequence, and replace it with a new pressure ring rubber gasket. The replacement steps of the new pressure ring rubber gasket are the same as the replacement process of the pressure ring rubber gasket, only in reverse order.

[0062] S6: Sequentially open the soft plastic suction cups 43 of the replacement accessories 33 installed on the circumference of the support flange 23 and the monitoring flange 22, replace the old observation window glass, and replace it with a new observation window glass. The replacement steps of the new observation window glass are the same as those of the old observation window glass, only in reverse order.

[0063] S7: After checking that no part of the supporting flange 23, the first rubber ring 25-1, the glass of the combined electrical appliance observation window, the pressure ring rubber gasket, and the monitoring flange 22 is missing, adjust the first connecting rod 37 and the fixing rod 41 of the replacement accessory 33, tighten the short external hex bolts between the supporting flange 23 and the monitoring flange 22, and remove and replace the accessory 33 in sequence.

[0064] S8: Open the long external hex bolts of the housing 26 connecting the closed flange 24, the support flange 23, the monitoring flange 22 and the observation window of the combined electrical appliance, adjust the integrated structure of the support flange 23 and the monitoring flange 22 to the appropriate position and lock it;

[0065] S9: Open the adjustment knob 24-1 located above the sealing flange 24 to open the rotatable sealing structure 24-2 in the sealing flange 24. After ensuring that the internal structure of the combined electrical appliance can be observed through the observation window glass, fill the combined electrical appliance with an appropriate amount of sulfur hexafluoride gas.

[0066] In addition, in practice, if the construction period is short, the following simple replacement methods can be adopted:

[0067] S1: Vacuum the electrical appliances whose observation windows need to be replaced to ensure that there is no residual sulfur hexafluoride gas inside the electrical appliances that could cause harm to the human body.

[0068] S2: Tighten the adjustment knob 24-1 above the sealing flange 24 to close the sealing flange 24 and prevent airborne particles from entering the combined electrical equipment. If particles enter the combined electrical equipment, it will affect the later operation of the combined electrical equipment.

[0069] S3: Loosen the long external hex bolts of the connecting sealing flange 24, support flange 23, monitoring flange 22 and combined electrical appliance observation window housing 26, and directly disassemble the assembly of support flange 23 and monitoring flange 22 and replace it with a new assembly;

[0070] S4: Tighten the long hex bolts connecting the sealing flange 24, support flange 23, monitoring flange 22 and the housing 26 of the combined electrical appliance observation window. Open the adjustment knob 24-1 above the sealing flange 24 to open the rotatable sealing structure 24-2 in the sealing flange 24. After ensuring that the internal structure of the combined electrical appliance can be observed through the three-flange combined electrical appliance observation window glass, fill the combined electrical appliance with an appropriate amount of sulfur hexafluoride gas.

[0071] Thus, based on the three-flange combined electrical appliance observation window replacement device proposed in this application, the three-flange combined electrical appliance observation window can be replaced quickly and conveniently, solving the technical problems in the prior art where it is inconvenient to replace the combined electrical appliance observation window and particulate matter in the air can easily enter the combined electrical appliance during replacement.

[0072] The above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Any modifications or equivalent substitutions made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

1. A three-flange type combined electrical appliance observation window replacement device, characterized in that, include: A three-flange combined electrical observation window, comprising a monitoring flange (22), a support flange (23), and a sealing flange (24), wherein the sealing flange (24) is connected to the housing of the combined electrical observation window, the monitoring flange (22) is connected to the observation window glass, and the support flange (23) is installed between the sealing flange (24) and the monitoring flange (22); and Multiple replacement accessories, at least one of the multiple replacement accessories (33) is installed on the circumference of the support flange (23), and the remaining replacement accessories (33) of the multiple replacement accessories are installed on the circumference of the monitoring flange (22); A first rubber ring (25-1) is provided between the closed flange (24) and the housing of the combined electrical appliance observation window. A second rubber ring (25-2) is provided between the supporting flange (23) and the monitoring flange (22). A pressure ring rubber gasket is provided between the monitoring flange (22) and the observation window glass; A pressure ring rubber gasket is provided between the supporting flange (23) and the observation window glass; The replacement accessory (33) includes: A first base (35) is provided with a first through hole (32), which is adapted to a nut. The first base (35) is fixed to the support flange (23) and / or monitoring flange (22) through the first through hole (32) and the nut. A first connecting rod (37) with one end fixed to the other end of the first base (35); A misaligned structure (39) is fixed at one end to the other end of the first connecting rod (37), and the misaligned structure (39) is detachably connected to the first connecting rod (37); The replacement accessory (33) also includes: A fixing rod (41) is connected to the other end of the misaligned structure (39), the fixing rod (41) being rotatably mounted on the misaligned structure (39), and / or the fixing rod (41) being a telescopic fixing rod; and A soft plastic suction cup (43) is fixed on the fixing rod (41) and the soft plastic suction cup (43) is adsorbed onto the observation window glass.

2. The three-flange type combined electrical appliance observation window replacement device according to claim 1, characterized in that, The sealing flange (24) includes: Enclosed flange body; Multiple first bolt holes are provided on the closed flange body; Multiple second bolt holes are provided on the closed flange body; Multiple first long external hexagonal bolts (27), the first long external hexagonal bolts (27) can pass through the first bolt holes; Multiple first short external hexagonal bolts (28), the first short external hexagonal bolts (28) can pass through the second bolt hole; Among them, a plurality of first long external hexagonal bolts (27) pass through a plurality of first bolt holes respectively, and a plurality of first short external hexagonal bolts (28) pass through a plurality of second bolt holes respectively, so that the closed flange (24) is locked and connected to the housing of the combined electrical appliance observation window.

3. The three-flange type combined electrical appliance observation window replacement device according to claim 2, characterized in that, The closed flange body has a rotatable sealing structure (24-2), which is in the open state during normal operation of the combined electrical appliance.

4. The three-flange type combined electrical appliance observation window replacement device according to claim 3, characterized in that, The sealing flange (24) also includes: Adjustment knob (24-1), the adjustment knob (24-1) is connected to the rotatable sealing structure (24-2), the rotatable sealing structure (24-2) is a circular silicon steel sheet with a diameter smaller than the inner diameter of the closed flange (24); The adjustment knob (24-1) is configured to control the opening or closing of the rotatable sealing structure (24-2).

5. The three-flange type combined electrical appliance observation window replacement device according to claim 3, characterized in that, The sealing flange (24) also includes: The silicone rubber pad (24-3) disposed around the rotatable sealing structure (24-2) is used to reduce the friction between the rotatable sealing structure (24-2) and the sealing flange (24) during rotation.

6. The three-flange type combined electrical appliance observation window replacement device according to claim 1, characterized in that, A monitoring device (34) is installed on the monitoring flange (22); The monitoring device (34) includes: The second base (341) has a second through hole (343) which is adapted to a nut. The second base (341) is fixed to the monitoring flange (22) through the second through hole (343) and the nut. A second connecting rod (342) with one end fixed to the second base (341); and An observation device fixed to the other end of the second connecting rod (342).

7. The three-flange type combined electrical appliance observation window replacement device according to claim 1, characterized in that, Multiple replacement accessories (33) are evenly spaced on the circumference of the support flange (23); and / or multiple replacement accessories (33) are evenly spaced on the circumference of the monitoring flange (22); The replacement accessory (33) installed on the support flange (23) has the opposite installation direction to the replacement accessory (33) installed on the monitoring flange (22).

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