GIS (Gas Insulated Switchgear) switch shell with quick-release access hole structure

Abstract

The utility model relates to the technical field of electrical control switch equipment, in particular to a GIS (Gas Insulated Switchgear) switch shell with a quick-release access hole structure, which comprises a switch shell main body, an access door, a connecting piece, a connecting frame and a quick-release mechanism, one end, far away from the switch shell main body, of the overhaul pipe is connected with an overhaul frame; the access door is arranged in the access frame, and the access door is detachably arranged in the access frame; one end of each connecting piece is connected with the maintenance frame, and the other end of each connecting piece is connected with the maintenance door; the connecting frame is arranged on the maintenance frame, and one end of the connecting frame is connected with the maintenance door; the quick release mechanism is arranged on the access door, one end of the quick release mechanism is connected with the access door, and the other end of the quick release mechanism is connected with the connecting piece. Through the cooperation of the quick release mechanism and the connecting piece, the clamping of the connecting piece can be completed without repeatedly disassembling and assembling the bolt and rotating the adjusting hand wheel to drive the access door to rotate, so that the overall overhaul period is greatly shortened, and the quick maintenance requirement of equipment is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical control switch equipment technical field, concretely point to a kind of GIS switch casing with quick-release maintenance opening structure. BACKGROUND

[0002] As the key equipment for realizing power isolation, switching operation and small current on-off in power system, the shell of GIS disconnector needs to meet the three core requirements of "structural strength", "sealing reliability" and "convenient maintenance" at the same time. It needs to isolate external dust and moisture to protect internal high-voltage components, and also needs to quickly open the maintenance opening during equipment maintenance to ensure the continuous and stable operation of the power system.

[0003] In the structure design of existing GIS switch shell, the sealing and disassembly scheme of the maintenance opening has significant technical defects: to ensure sealing performance, the industry generally uses the traditional structure of "multiple bolts + blind plate", that is, 10-20 groups of bolts are evenly distributed along the circumference of the maintenance opening, and the blind plate is pressed onto the end face of the maintenance opening to realize sealing through the tightening force of the bolts. This scheme exposes multiple problems in actual application: first, the disassembly efficiency is extremely low, and all bolts need to be disassembled one by one using tools during maintenance, and the time consumed by single disassembly usually exceeds 30 minutes. In the case of emergency failure (such as short circuit of equipment requiring quick repair), the long disassembly time is easy to cause the expansion of power outage range and the upgrading of failure influence; second, the sealing reliability decreases with the use cycle, and the thread cooperation between the bolt and the blind plate is easy to be worn due to repeated disassembly and assembly, resulting in insufficient pre-tightening force of the bolt, and then the sealing gap appears, and external moisture or impurities are easy to enter, which easily causes the decrease of insulation performance of internal components and increases the risk of equipment failure; third, the operation cost and labor input are high, and the disassembly and assembly of bolts need to be completed by professional personnel with tools, and the bolts need to be checked and lubricated one by one, so the labor and time cost is significantly increased during maintenance.

[0004] In the prior art, the Chinese patent with publication number CN218958398U discloses a "GIS high-voltage switch shell supporting tool", but its core improvement direction focuses on "shell support stability" and "lowering adjustment of extension part", and does not involve the sealing and quick-release structure of the maintenance opening; other related patents mainly optimize the shell material and overall strength, and do not solve the technical problem of considering both the quick disassembly and sealing reliability of the maintenance opening. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a GIS switch shell with quick-release maintenance opening structure which does not need to repeatedly disassemble and assemble bolts, quickly opens the maintenance opening, and keeps sealing reliable for a long time.

[0006] The utility model realizes the following technical scheme: a GIS switch shell with quick-release maintenance opening structure, comprising:

[0007] The switch shell body is communicated with an inspection pipe, and one end of the inspection pipe away from the switch shell body is fixedly connected with an inspection frame;

[0008] An inspection door is adaptively arranged in the inspection frame, and the inspection door is detachably connected with the inspection frame;

[0009] A plurality of connecting pieces are arranged, and the plurality of connecting pieces are distributed along the circumference of the inspection frame; one end of each connecting piece is fixedly connected with the inspection frame, and the other end is detachably connected with the inspection door;

[0010] A connecting frame is arranged on the outer side wall of the inspection frame; one end of the connecting frame is fixedly connected with the inspection frame, and the other end is rotatably connected with the inspection door;

[0011] A quick release mechanism is arranged on the outer side of the inspection door; one end of the quick release mechanism is fixedly connected with the inspection door, and the other end is detachably connected with the connecting piece, so as to realize the quick assembly and disassembly of the inspection door and the inspection frame.

[0012] The switch shell body serves as a core protection shell, the inspection pipe provides a channel for inspection, the inspection frame serves as a mounting reference of the inspection door, and the three form a stable inspection entrance; the plurality of connecting pieces realize the preliminary positioning of the inspection door and the inspection frame, the connecting frame provides a rotating guide for the opening and closing of the inspection door, and the quick release mechanism serves as a core driving component, replaces the traditional bolt, and directly drives the assembly and disassembly of the inspection door and the inspection frame through cooperation with the connecting piece, so as to meet the requirements of no bolt and quick operation.

[0013] In order to better realize the utility model, further, each connecting piece comprises a connecting protrusion and a clamping block; the connecting protrusion is fixedly connected along the edge of the inspection door in a circumferential direction, the clamping block is fixedly connected along the inner ring of the inspection frame in a circumferential direction in a corresponding and spaced manner, the outer shape of the connecting protrusion is adapted to the clamping groove of the clamping block, and the connecting protrusion can be embedded in the clamping groove of the clamping block to form clamping fixation.

[0014] In order to better realize the utility model, further, an annular sealing groove is formed in the side wall edge of the inspection frame facing the inspection door, and an elastic sealing rubber strip is embedded in the annular sealing groove; when the connecting protrusion is embedded in the clamping groove of the clamping block, the elastic sealing rubber strip is tightly attached to the inner side wall of the inspection frame.

[0015] In order to better realize the utility model, further, the connecting frame comprises a connecting seat, a connecting cantilever and a cantilever rod; the connecting seat is fixedly connected with the outer side wall of the inspection frame; one end of the connecting cantilever is rotatably connected with the connecting seat through a rotating shaft; one end of the cantilever rod is rotatably connected with the other end of the connecting cantilever through a pin shaft; and the other end of the cantilever rod is rotatably connected with the quick release mechanism.

[0016] In order to better realize the utility model, further, the connecting cantilever is provided with an arc-shaped limiting groove at one end away from the connecting base, and the arc-shaped limiting groove extends along the rotating track of the connecting cantilever; one end of the cantilever rod close to the connecting cantilever is provided with an elastic limiting bead, and the elastic limiting bead is matched with the arc-shaped limiting groove; when the access door is completely opened, the elastic limiting bead is clamped into the end part of the arc-shaped limiting groove to limit the relative rotation of the cantilever rod and the connecting cantilever.

[0017] In order to better realize the utility model, further, the quick release mechanism comprises a mounting cylinder, a mounting disc, an adjusting rod and a check assembly; the top end of the mounting cylinder is rotationally connected with one end of the cantilever rod away from the connecting cantilever, the mounting disc is coaxially fixedly connected to the middle part of the outer side wall of the mounting cylinder; one end of the adjusting rod is fixedly connected with the central position of the outer side wall of the access door, the other end of the adjusting rod sequentially penetrates the mounting disc and the mounting cylinder and rotationally cooperates with the mounting cylinder; the check assembly is arranged on the outer side wall of the mounting disc, one end of the check assembly is clampedly matched with the adjusting rod, and the check assembly is used for limiting reverse rotation of the adjusting rod to keep the stable connection of the access door and the access frame.

[0018] In order to better realize the utility model, further, the check assembly comprises a check ratchet wheel, a check pawl, a limiting plate and a close spring; the check ratchet wheel is coaxially fixedly sleeved on the outer side wall of the adjusting rod and is located between the mounting disc and the access door; the check pawl is rotationally arranged on the side wall of the mounting disc facing the access door through a pin shaft, and one end of the check pawl is clamped with the ratchet teeth of the check ratchet wheel; the limiting plate is fixedly connected to the side wall of the mounting disc facing the access door and is located on the other side of the check pawl; one end of the close spring is fixedly connected with the side wall of the limiting plate, and the other end of the close spring is fixedly connected with the middle part of the check pawl, and the check pawl is closely matched with the ratchet teeth of the check ratchet wheel under the elastic force of the close spring, so as to realize one-way check.

[0019] In order to better realize the utility model, further, one side of the check pawl away from the clamped end of the check ratchet wheel is integrally formed with an operating handle; the operating handle extends away from the check pawl, and the outer wall of the operating handle is sleeved with an anti-skid rubber sleeve, so as to conveniently drive the check pawl to rotate around the pin shaft to be separated from the ratchet teeth of the check ratchet wheel.

[0020] In order to better realize the utility model, further, one end of the adjusting rod away from the access door penetrates the mounting cylinder and extends to the outside of the mounting cylinder, and the end is fixedly connected with an adjusting hand wheel, the outer side wall of the adjusting hand wheel is provided with anti-skid lines, so as to drive the adjusting rod to rotate to realize the clamping or separation of the access door and the access frame.

[0021] Further, the inner wall of the mounting cylinder is provided with an annular guide sleeve, the annular guide sleeve is made of self-lubricating wear-resistant material; the inner hole of the annular guide sleeve is matched with the outer wall of the adjusting rod, and the adjusting rod penetrates through the annular guide sleeve and is rotationally matched with the annular guide sleeve, so that the friction loss of the adjusting rod during rotation is reduced.

[0022] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0023] (1) The utility model discloses a quick release mechanism is set up and realizes the quick disassembly of the access door, only needs to pull the operation handle of check pawl and separates the ratchet tooth of ratchet when overhauling, rotates the regulating hand wheel and can drive the access door to rotate, makes the connecting lug and the clamping block quick separation, does not need to disassemble any bolt in whole process, reversely rotates the hand wheel after the overhauling is completed and can complete the clamping, and the check assembly automatically realizes the adhesion of pawl and ratchet through the spring elastic force, does not need the additional locking step, can respond to the emergency breakdown repair of power system quickly, and the power loss is greatly reduced.

[0024] (2) The utility model discloses the accurate adaptation of connecting lug and clamping block ensures the coaxial positioning of access door and access frame, and the annular sealing groove of access door edge and elastic sealing rubber strip are synchronous adhesion, form the double sealing structure of mechanical positioning and elastic sealing, solve the sealing failure problem caused by traditional bolt wear thoroughly, and the one-way check function of check assembly can effectively prevent the reverse rotation of access door due to equipment vibration, external force touch, ensure that the sealing rubber strip always keeps the state of compression in long-term operation, and at least 3 years of continuous sealing performance attenuation can be realized through testing, and the equipment maintenance cycle is significantly prolonged.

[0025] (3) The utility model discloses the anti -skid lines of regulating hand wheel, the operation handle of check pawl can improve the hand holding stability, avoid slipping when operating, and the arc limiting groove of connecting frame cooperates with elastic limiting bead, and automatic positioning is realized when the access door is completely opened, so that the door body is prevented from shaking and colliding with personnel or equipment during the maintenance process, especially suitable for the scene of maintenance personnel wearing insulating gloves operation, and the opening and closing of access door can be completed by a single person without professional tools, reduce manpower investment, and reduce the operation and maintenance cost of electric power enterprise.

[0026] (4) The annular guide sleeve of the inner wall of the mounting cylinder in the quick release mechanism can reduce the friction loss when the adjusting rod rotates, the one-piece structure of the connecting cantilever and the check pawl, and the aging-resistant material selection of the elastic sealing rubber strip can adapt to the complex operating environment of outdoor, high temperature and humidity of power equipment, reduce the replacement frequency of parts, reduce the maintenance and replacement cost of the whole life cycle of the equipment, and can be widely applied to 110kV~500kV high-voltage GIS switch equipment, and has important practical value for improving the operation and maintenance efficiency and equipment operation reliability of the power system. BRIEF DESCRIPTION OF DRAWINGS

[0027] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments thereof as taken in conjunction with the accompanying drawings:

[0028] Figure 1 is a schematic view of the three-dimensional structure of the present application;

[0029] Figure 2 is a schematic view of the three-dimensional structure of the connecting frame in the present application;

[0030] Figure 3 is a schematic view of the three-dimensional structure of the maintenance frame in the present application;

[0031] Figure 4 is a schematic view of the three-dimensional structure of the maintenance door in the present application;

[0032] Figure 5 is a schematic view of the three-dimensional structure of the quick-release mechanism in the present application.

[0033] Wherein: 1 - switch shell main body, 21 - connecting protrusion, 22 - clamping block, 31 - connecting seat, 32 - connecting cantilever, 33 - cantilever rod, 41 - mounting cylinder, 42 - mounting disc, 43 - adjusting rod, 441 - check ratchet, 442 - check pawl, 443 - limit plate, 444 - fit spring, 45 - adjusting hand wheel, 5 - maintenance pipe, 6 - maintenance frame, 7 - maintenance door. DETAILED DESCRIPTION

[0034] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like 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 the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0036] In the description of the utility model, it is necessary to explain, unless there is definite stipulation and limitation, the term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, also can be direct connection, also can be indirect connection through intermediate medium, can be the intercommunication of two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.

[0037] Embodiment 1:

[0038] The main structure of the embodiment, as shown in Figures 1-5 Including:

[0039] The switch shell main body 1 is communicated with the maintenance pipe 5, and the end of the maintenance pipe 5 away from the switch shell main body 1 is fixedly connected with the maintenance frame 6.

[0040] The maintenance door 7 is adaptively arranged in the maintenance frame 6, and the maintenance door 7 is detachably connected with the maintenance frame 6.

[0041] The connecting piece is provided with multiple groups, and the multiple groups of connecting pieces are distributed along the circumferential direction of the maintenance frame 6, one end of each group of connecting pieces is fixedly connected with the maintenance frame 6, and the other end is detachably connected with the maintenance door 7.

[0042] The connecting frame is arranged on the outer side wall of the maintenance frame 6, one end of the connecting frame is fixedly connected with the maintenance frame 6, and the other end is rotatably connected with the maintenance door 7.

[0043] The quick release mechanism is arranged on the outer side of the maintenance door 7, one end of the quick release mechanism is fixedly connected with the maintenance door 7, and the other end is detachably connected with the connecting piece, for realizing the quick disassembly of the maintenance door 7 and the maintenance frame 6.

[0044] The specific implementation process is that one end of the maintenance pipe 5 is welded or bolted with the preset maintenance opening of the switch shell main body 1, so as to ensure communication and sealing, one end of the maintenance frame 6 is welded with the end of the maintenance pipe 5 away from the switch shell main body 1, so as to ensure that the maintenance frame 6 is coaxial with the maintenance pipe 5, the maintenance door 7 is put into the maintenance frame 6, the position is adjusted to make the door body and the frame body fit, then multiple groups of connecting pieces are evenly distributed along the circumferential direction of the maintenance frame 6, one end is welded in the inner circle of the maintenance frame 6, and the other end is not temporarily engaged with the maintenance door 7, one end of the connecting frame is welded on the outer side wall of the maintenance frame 6, preferably 2 groups are symmetrically arranged, the stability is improved, the other end is rotatably connected with the outer side wall of the maintenance door 7 through the rotating shaft, one end of the quick release mechanism is bolted on the outer side center position of the maintenance door 7, the other end is aligned with the free end of the connecting piece, and the overall structure assembly is completed.

[0045] Manually operate the quick-release mechanism to observe whether the inspection door 7 can move smoothly along the rotation direction of the connecting frame, and whether it can be initially fixed through the cooperation of the quick-release mechanism and the connecting parts, ensuring that there is no jamming or loosening.

[0046] Example 2:

[0047] This embodiment further defines the structure of the connector based on the above embodiments, such as... Figures 2-4 As shown, each set of connectors includes a connecting protrusion 21 and a snap-fit ​​block 22. The connecting protrusions 21 are fixedly connected circumferentially along the edge of the inspection door 7, and the snap-fit ​​blocks 22 are fixedly connected circumferentially along the inner ring of the inspection frame 6. The shape of the connecting protrusions 21 is adapted to the slot of the snap-fit ​​block 22, and the connecting protrusions 21 can be embedded in the slot of the snap-fit ​​block 22 to form a snap-fit ​​fixation. The connecting protrusions 21 are fixed to the inspection door 7 and rotate synchronously with the door body; the snap-fit ​​blocks 22 are fixed to the inspection frame 6 as a fixing reference. The shape of the connecting protrusions 21 and the slot of the snap-fit ​​blocks 22 are adapted to each other, such as "L-shaped protrusion, L-shaped slot". When the door body rotates, the protrusions can be embedded in the slots, and the fixation is achieved by mechanical engagement instead of bolts. At the same time, the circumferentially spaced design ensures that the door body is subjected to uniform force and avoids local loosening.

[0048] The specific implementation process is as follows: First, the connecting protrusion 21 is processed: a metal block is cut into an "L" shape, with one connecting protrusion 21 corresponding to each set of connectors. Three sets are distributed at 120° intervals along the circumferential edge of the inspection door 7. The connecting protrusions 21 are fixed to the side wall of the inspection door 7 facing the inspection frame 6 by welding or bolts. Second, the locking block 22 is processed: based on the shape of the connecting protrusion 21, a metal block is cut to form a suitable "L-shaped slot." This slot is welded and fixed along the inner circumference of the inspection frame 6 corresponding to the position of the connecting protrusion 21, ensuring that the protrusion can accurately embed into the slot after rotation. Third, the inspection door 7 is rotated so that the connecting protrusion 21 enters through the slot entrance of the locking block 22. Rotation continues until the protrusion is fully embedded at the bottom of the slot. At this point, the inspection door 7 cannot move axially, verifying the locking effect. Reverse rotation of the door allows the protrusion to smoothly disengage from the slot, ensuring smooth assembly and disassembly in both directions. Other parts of this embodiment are the same as those in the above embodiment and will not be repeated.

[0049] Example 3:

[0050] The embodiment is further limited on the basis of the above-mentioned embodiment, the access door 7 is provided with an annular sealing groove at the edge of one side wall of the access frame 6, and an elastic sealing rubber strip is embedded in the annular sealing groove; when the connecting protrusion 21 is embedded in the clamping groove of the clamping block 22, the elastic sealing rubber strip is tightly attached to the inner side wall of the access frame 6. The annular sealing groove is provided at the edge of the access door 7 and corresponds to the inner ring of the access frame 6, so as to ensure that the sealing rubber strip can cover the gap between the door body and the frame body; the elastic sealing rubber strip is preferably a ternary ethylene-propylene rubber with aging resistance and deformation capacity; when the connecting protrusion 21 is embedded in the clamping block 22, the door body extrudes the rubber strip, the rubber strip is deformed to fill the gap, and a double protection of “mechanical fixation and elastic sealing” is formed, so as to solve the sealing leakage that may exist only by clamping.

[0051] The specific implementation process is as follows: an annular sealing groove with a groove depth of 2 mm and a groove width of 3 mm is machined at the edge of one side wall of the access door 7 towards the access frame 6, so as to ensure that the sealing groove is coaxial with the access door 7; the elastic sealing rubber strip is cut into an annular shape that is suitable for the sealing groove, and the diameter of the rubber strip embedded in the sealing groove is slightly larger than the groove depth by 0.5 mm, so as to ensure pre-compression and prevent the rubber strip from falling off by auxiliary fixation with glue; the access door 7 is rotated to embed the connecting protrusion 21 in the clamping block 22, at which time the sealing rubber strip is extruded and deformed by the inner ring of the access frame 6; a gas tightness detection device is used to fill 0.1 MPa compressed air into the switch shell main body 1 and keep for 1 hour, and the pressure change is observed; if the pressure drop is not more than 0.005 MPa, the sealing is qualified. The other parts of the embodiment are the same as those of the above-mentioned embodiment, and will not be described herein again.

[0052] Embodiment 4:

[0053] The embodiment is further limited on the basis of the above-mentioned embodiment, and the structure of the connecting frame is limited as shown in Figure 1 , Figure 2 , Figure 5 The connecting frame includes a connecting seat 31, a connecting cantilever 32 and a cantilever rod 33; the connecting seat 31 is fixedly connected to the outer side wall of the access frame 6, one end of the connecting cantilever 32 is rotationally connected to the connecting seat 31 through a rotating shaft, one end of the cantilever rod 33 is rotationally connected to the other end of the connecting cantilever 32 through a pin shaft, and the other end of the cantilever rod 33 is used for rotationally connecting with the quick release mechanism. The connecting seat 31 is fixed as a fixed reference and is fixed with the access frame 6; the connecting cantilever 32 is rotationally connected to the connecting seat 31 through a rotating shaft to realize radial swinging of the door body; the cantilever rod 33 is rotationally connected to the connecting cantilever 32 through a pin shaft to realize axial extension of the door body; the cooperation of the two enables the access door 7 to move along the track of “swinging and extending”, which is convenient for opening and moving away from the access opening to not affect the maintenance operation, and can be precisely aligned with the access frame 6 when closed.

[0054] The specific implementation process is that the connecting seat 31 is processed: a metal plate is cut into a "U-shaped" and is symmetrically arranged on the outer side wall of the maintenance frame 6 through welding; the connecting cantilever 32 is processed: a metal rod is cut into a shape, one end is rotationally connected with the "U-shaped" opening of the connecting seat 31 through a rotating shaft, and the other end is provided with a pin hole; the cantilever rod 33 is processed: a metal rod is cut into a shape, one end is provided with a pin hole matched with the connecting cantilever 32 and is rotationally connected with the connecting cantilever 32 through a pin, and the other end is provided with a mounting hole for connecting the quick release mechanism; the end of the cantilever rod 33 away from the connecting cantilever 32 is rotationally connected with the mounting cylinder 41 of the quick release mechanism through a rotating shaft, and the connection between the connecting frame and the quick release mechanism is completed; the maintenance door 7 is pushed, and it is observed whether the connecting cantilever 32 can smoothly swing around the connecting seat 31, whether the cantilever rod 33 can smoothly rotate around the connecting cantilever 32, whether the door body can stably stay at a position away from the maintenance opening after being opened, and whether the door body can be accurately aligned with the maintenance frame 6 when being closed. The other parts of the embodiment are the same as those of the above-described embodiment, and will not be described herein.

[0055] Embodiment 5

[0056] In the embodiment, the structure of the connecting frame is further limited based on the above-described embodiments, as shown in Figure 1 , Figure 2 , Figure 5 The end of the connecting cantilever 32 away from the connecting seat 31 is provided with an arc-shaped limiting groove, and the arc-shaped limiting groove extends along the rotating track of the connecting cantilever 32; the end of the cantilever rod 33 close to the connecting cantilever 32 is provided with an elastic limiting bead, and the elastic limiting bead is matched with the arc-shaped limiting groove; when the maintenance door 7 is completely opened, the elastic limiting bead is clamped into the end of the arc-shaped limiting groove to limit the relative rotation of the cantilever rod 33 and the connecting cantilever 32. The arc-shaped limiting groove is provided along the rotating track of the connecting cantilever 32 to ensure that the limiting bead can move synchronously with the rotation of the cantilever rod 33; the elastic limiting bead is provided with a spring, and the bead is telescopically installed on the cantilever rod 33; when the door body is completely opened, the limiting bead is clamped into the end of the limiting groove under the action of the spring elastic force, the relative rotation of the cantilever rod 33 and the connecting cantilever 32 is limited through mechanical clamping, the door body is prevented from shaking due to external force, and the safety of maintenance is improved.

[0057] Specific implementation process is, in the connection cantilever 32 away from the connecting seat 31 one end, through milling machine processing arc limit groove depth 1.5mm, groove width and limit bead diameter adaptation, the extension direction of the groove is consistent with the rotation track of the connecting cantilever 32, the end of the groove is set as a circular arc bottom to facilitate the limit bead to be inserted;In the cantilever rod 33 close to the connecting cantilever 32 one end, drill and install elastic limit bead bead diameter 1.2mm, spring force 0.5N, ensure that the limit bead can be aligned with the arc limit groove;Push the access door 7 to the fully open state door body and access frame 6 angle 90°, at this time the elastic limit bead is inserted into the end of the arc limit groove under the action of spring, try to gently shake the door body, the door body has no obvious movement;Push the door body slightly, limit bead is extruded and compressed back, can smoothly separate from the limit groove, verify the opening positioning, closing smoothly effect. The other parts of the embodiment are the same as the above embodiment, and will not be described here.

[0058] Example 6:

[0059] This embodiment is based on the above embodiment, further limit the structure of quick release mechanism, as shown in Figures 1-5 The quick release mechanism includes mounting cylinder 41, mounting disc 42, adjusting rod 43 and check assembly;The top end of the mounting cylinder 41 is rotationally connected with the end of the cantilever rod 33 away from the connecting cantilever 32, the mounting disc 42 is coaxially fixedly connected on the outer side wall of the mounting cylinder 41;One end of the adjusting rod 43 is fixedly connected with the center position of the outer side wall of the access door 7, the other end of the adjusting rod 43 penetrates the mounting disc 42 and the mounting cylinder 41 in turn, and is rotationally connected with the mounting cylinder 41;The check assembly is arranged on the outer side wall of the mounting disc 42, one end of the check assembly is clamped with the adjusting rod 43, for limiting the reverse rotation of the adjusting rod 43 to keep the stable connection between the access door 7 and the access frame 6. The mounting cylinder 41 is connected with the cantilever rod 33 as the support reference of the quick release mechanism;The mounting disc 42 is used for fixing the check assembly to ensure the stability of the check function;The adjusting rod 43 penetrates the mounting cylinder 41 and the mounting disc 42, one end of which is connected with the access door 7 and the other end of which can be externally connected with a driving member, which directly drives the access door 7 to rotate by rotating the adjusting rod 43, realizing the clamping / separation of the connecting member;The check assembly cooperates with the adjusting rod 43 to limit the reverse rotation of the adjusting rod 43, avoiding the door body from being loosened due to vibration after clamping, and ensuring the reliability of fixation.

[0060] The specific implementation process is as follows: The mounting cylinder 41 is machined from a metal tube, with a pivot hole at the top that matches the cantilever rod 33, and is rotatably connected to the cantilever rod 33 via the pivot. The mounting plate 42 is machined from a metal disc, with a hole at the center that matches the mounting cylinder 41, and is coaxially fixed to the middle of the outer wall of the mounting cylinder 41 by welding. The adjusting rod 43 is machined from a metal rod, with one end fixed to the center of the outer wall of the inspection door 7 by bolts, and the other end passing through the center hole of the mounting plate 42 and the inner hole of the mounting cylinder 41, rotating with the mounting cylinder 41 via a bearing to reduce friction. The check valve assembly is fixed to the outer wall of the mounting plate 42 by bolts, ensuring that the engaging end of the check valve assembly contacts the outer wall of the adjusting rod 43. The adjusting rod 43 is rotated, causing the inspection door 7 to rotate synchronously. It is observed whether the connecting protrusion 21 can smoothly engage / disengage from the engaging block 22. After engagement, the adjusting rod 43 is rotated in the opposite direction; the check valve assembly should be able to restrict the rotation of the adjusting rod 43, ensuring the door is fixed. The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0061] Example 7:

[0062] This embodiment further defines the structure of the quick-release mechanism based on the above embodiments, such as... Figures 1-5 As shown, the check valve assembly includes a check ratchet 441, a check pawl 442, a limiting plate 443, and a contact spring 444; the check ratchet 441 is coaxially fixedly sleeved on the outer wall of the adjusting rod 43 and is located between the mounting plate 42 and the access door 7; the check pawl 442 is rotatably mounted on the side wall of the mounting plate 42 facing the access door 7 via a pin, and one end of the check pawl 442 can engage with the ratchet teeth of the check ratchet 441; The limiting plate 443 is vertically fixedly connected to the side wall of the mounting plate 42 facing the inspection door 7, and is located on the other side of the check pawl 442; one end of the contact spring 444 is fixedly connected to the side wall of the limiting plate 443, and the other end of the contact spring 444 is fixedly connected to the middle of the check pawl 442. Under the elastic force of the contact spring 444, the check pawl 442 is tightly engaged with the ratchet teeth of the check ratchet 441 to achieve one-way check. The check ratchet 441 is fixed to the adjusting rod 43 and rotates synchronously with the adjusting rod 43; the check pawl 442 rotates through a pin and is always in contact with the ratchet teeth under the elastic force of the contact spring 444; when the adjusting rod 43 rotates in the forward direction to drive the door to engage, the pawl slides along the inclined surface of the ratchet teeth without affecting the rotation; when the adjusting rod 43 rotates in the reverse direction and the door tends to loosen, the pawl engages in the groove of the ratchet teeth, restricting the rotation and achieving one-way check; the limiting plate 443 provides a fixed reference for the contact spring 444 to ensure that the spring force acts stably on the pawl.

[0063] The specific implementation process is as follows: Machining the check ratchet 441: It is formed by cutting a metal disc, with a ratchet tooth pitch of 2mm on the outer ring, and a hole in the center to match the adjusting rod 43. It is fixed to the adjusting rod 43 by a key connection and is located between the mounting plate 42 and the access door 7; Machining the check pawl 442: It is formed by cutting a metal sheet into a "pawl shape," with one end rotatably mounted on the side wall of the mounting plate 42 facing the access door 7 via a pin, and the other end set as a locking end to match the ratchet teeth; Machining the limiting plate 443: It is formed by cutting a metal plate and vertically fixed to the side wall of the mounting plate 42 facing the access door 7 by welding. Located on the side of the check pawl 442 away from the engaging end; a contact spring 444 is installed: a cylindrical helical spring with a wire diameter of 0.5mm and a free length of 10mm, one end of which is connected to the side wall of the limiting plate 443 via a hook, and the other end is connected to the middle of the check pawl 442 via a hook, ensuring that the pawl and ratchet are in contact in the natural state of the spring; rotating the adjusting rod 43 in the forward direction drives the door to engage, and the pawl slides along the inclined surface of the ratchet teeth, rotating smoothly; rotating the adjusting rod 43 in the reverse direction causes the pawl to engage in the tooth groove, and the adjusting rod 43 cannot rotate; pulling the pawl to disengage from the ratchet restores smooth rotation in the reverse direction, verifying the one-way check effect. The other parts of this embodiment are the same as those in the above embodiment, and will not be described again.

[0064] Example 8:

[0065] This embodiment further defines the structure of the quick-release mechanism based on the above embodiments, such as... Figures 1-5 As shown, an operating handle is integrally formed on the side of the check pawl 442 away from the engagement end with the check ratchet 441. The operating handle extends away from the check pawl 442, and its outer wall is fitted with an anti-slip rubber sleeve for conveniently driving the check pawl 442 to rotate around the pin to disengage from the ratchet teeth of the check ratchet 441. The operating handle and the check pawl 442 are integrally formed to ensure structural strength and prevent breakage. The handle extends away from the pawl, and the extended lever arm reduces the force required to actuate the pawl. The anti-slip rubber sleeve increases the friction between the hand and the handle, preventing slippage during operation, especially when maintenance personnel are wearing insulated gloves, thus improving operational convenience and further shortening the time required to unlock the check assembly.

[0066] The specific implementation process is as follows: When machining the check pawl 442, the operating handle is simultaneously cut and formed with a length of 30mm and a diameter of 5mm, ensuring that the handle and pawl are integrally formed from stainless steel and meet the strength requirements; the anti-slip rubber sleeve, made of nitrile rubber, with an inner diameter matching the handle diameter, is fitted onto the outer wall of the operating handle and fixed with glue to prevent slippage; the maintenance personnel, wearing insulated gloves, pinch the operating handle and pull it away from the check pawl 441 to observe whether the pawl can easily disengage from the ratchet; releasing the handle, the spring drives the pawl to return to its original position and engage with the ratchet, verifying whether the operation is effortless and whether the return is smooth. Other parts of this embodiment are the same as those in the above embodiment and will not be repeated.

[0067] Embodiment 9:

[0068] This embodiment is based on the above-mentioned embodiments, and further limits the structure of the quick release mechanism, as shown in the figure, the inner wall of the mounting cylinder 41 is provided with an annular guide sleeve, and the annular guide sleeve is made of self-lubricating wear-resistant material; the inner hole of the annular guide sleeve is matched with the outer wall of the adjusting rod 43, and the adjusting rod 43 penetrates through the annular guide sleeve and is in rotating cooperation with the annular guide sleeve, so as to reduce the friction loss of the adjusting rod 43 when rotating. The annular guide sleeve is made of self-lubricating wear-resistant material such as polytetrafluoroethylene, and the friction coefficient is as low as 0.04, and it is wear-resistant, and is sleeved between the inner wall of the mounting cylinder 41 and the adjusting rod 43, avoiding direct contact between metals, reducing friction loss; the inner hole of the guide sleeve is matched with the outer wall of the adjusting rod 43, ensuring the coaxiality of the adjusting rod 43 when rotating, avoiding rotation deviation caused by wear, and prolonging the service life of the quick release mechanism. Figures 1-5 The specific implementation process is as follows: processing the adjusting hand wheel 45: cutting a metal disc into a diameter of 80mm and a thickness of 10mm, and a hole matched with the adjusting rod 43 is formed in the center, and the adjusting hand wheel 45 is fixed on the end of the adjusting rod 43 away from the access door 7 and extends to the outside of the mounting cylinder 41 through key connection; on the outer wall of the adjusting hand wheel 45, the anti-skid pattern is processed by knurling process with a depth of 0.5mm, increasing the surface roughness; the maintenance personnel hold the adjusting hand wheel 45 with their hands and rotate it forward / backward, and observe whether the adjusting rod 43 can rotate smoothly synchronously and whether there is slipping phenomenon when rotating; compared with directly rotating the adjusting rod 43, verify whether the hand wheel is labor-saving and the required force is reduced by more than 60% to be qualified. The other parts of this embodiment are the same as those of the above-mentioned embodiments, and will not be described again.

[0069] Embodiment 10:

[0070] This embodiment is based on the above-mentioned embodiments, and further limits the structure of the quick release mechanism, as shown in the figure, the inner wall of the mounting cylinder 41 is provided with an annular guide sleeve, and the annular guide sleeve is made of self-lubricating wear-resistant material; the inner hole of the annular guide sleeve is matched with the outer wall of the adjusting rod 43, and the adjusting rod 43 penetrates through the annular guide sleeve and is in rotating cooperation with the annular guide sleeve, so as to reduce the friction loss of the adjusting rod 43 when rotating. The annular guide sleeve is made of self-lubricating wear-resistant material such as polytetrafluoroethylene, and the friction coefficient is as low as 0.04, and it is wear-resistant, and is sleeved between the inner wall of the mounting cylinder 41 and the adjusting rod 43, avoiding direct contact between metals, reducing friction loss; the inner hole of the guide sleeve is matched with the outer wall of the adjusting rod 43, ensuring the coaxiality of the adjusting rod 43 when rotating, avoiding rotation deviation caused by wear, and prolonging the service life of the quick release mechanism.

[0071] Figures 1-5 The specific implementation process is as follows: processing the adjusting hand wheel 45: cutting a metal disc into a diameter of 80mm and a thickness of 10mm, and a hole matched with the adjusting rod 43 is formed in the center, and the adjusting hand wheel 45 is fixed on the end of the adjusting rod 43 away from the access door 7 and extends to the outside of the mounting cylinder 41 through key connection; on the outer wall of the adjusting hand wheel 45, the anti-skid pattern is processed by knurling process with a depth of 0.5mm, increasing the surface roughness; the maintenance personnel hold the adjusting hand wheel 45 with their hands and rotate it forward / backward, and observe whether the adjusting rod 43 can rotate smoothly synchronously and whether there is slipping phenomenon when rotating; compared with directly rotating the adjusting rod 43, verify whether the hand wheel is labor-saving and the required force is reduced by more than 60% to be qualified. The other parts of this embodiment are the same as those of the above-mentioned embodiments, and will not be described again.

[0072] ​The specific implementation process is that the annular guide sleeve is processed: polytetrafluoroethylene material is cut into a shape with an inner diameter matched with the diameter of the adjusting rod 43, an outer diameter matched with the inner diameter of the mounting cylinder 41, and a length of 20 mm; the annular guide sleeve is embedded in the middle of the inner wall of the mounting cylinder 41, fixed by glue to ensure that the guide sleeve is coaxial with the mounting cylinder 41, and then the adjusting rod 43 is penetrated through the inner hole of the guide sleeve and rotationally matched with the guide sleeve; the adjusting hand wheel 45 is continuously rotated for 1000 times to simulate long-term use, and after disassembly, the contact surface of the adjusting rod 43 and the guide sleeve is observed, and there is no obvious scratch or wear; the adjusting rod 43 is rotated, and it is still smooth and has no jamming, verifying the wear resistance effect. The other parts of the embodiment are the same as those of the above-mentioned embodiments, and will not be described again.

[0073] It can be understood that the working principle and working process of components such as the check pawl 442 and the adjusting hand wheel 45 of the GIS switch shell structure according to an embodiment of the utility model are prior art and are well known to those skilled in the art, and will not be described in detail here.

[0074] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A GIS switch housing having a quick-release type access port structure, characterized by, Include: Switch shell main body (1), the switch shell main body (1) is communicated with the maintenance pipe (5), and the end away from the switch shell main body (1) of the maintenance pipe (5) is fixedly connected with the maintenance frame (6); Maintenance door (7), the maintenance door (7) is adaptively arranged in the maintenance frame (6), and the maintenance door (7) is detachably connected with the maintenance frame (6); Connecting piece, the connecting piece is provided with multiple groups, and multiple groups of connecting pieces are distributed along the circumferential direction of the maintenance frame (6), one end of each group of connecting pieces is fixedly connected with the maintenance frame (6), and the other end is detachably connected with the maintenance door (7); Connecting frame, the connecting frame is arranged on the outer side wall of the maintenance frame (6), one end of the connecting frame is fixedly connected with the maintenance frame (6), and the other end is rotatably connected with the maintenance door (7); Quick release mechanism, the quick release mechanism is arranged on the outer side of the maintenance door (7), one end of the quick release mechanism is fixedly connected with the maintenance door (7), and the other end is detachably connected with the connecting piece, for realizing the quick disassembly of the maintenance door (7) and the maintenance frame (6).

2. The GIS switch housing with a quick-release type access port structure according to claim 1, characterized in that, Each group of connecting pieces includes a connecting lug (21) and a clamping block (22); the connecting lug (21) is fixedly connected along the circumferential direction of the edge of the maintenance door (7), the clamping block (22) is fixedly connected along the circumferential direction of the inner ring of the maintenance frame (6), the shape of the connecting lug (21) is adapted to the clamping groove of the clamping block (22), and the connecting lug (21) can be embedded in the clamping groove of the clamping block (22) to form clamping fixation.

3. The GIS switch housing with a quick-release type access port structure according to claim 2, characterized in that, The side wall edge of the maintenance door (7) towards the maintenance frame (6) is provided with an annular sealing groove, and an elastic sealing rubber strip is embedded in the annular sealing groove; when the connecting lug (21) is embedded in the clamping groove of the clamping block (22), the elastic sealing rubber strip is tightly attached to the inner side wall of the maintenance frame (6).

4. The GIS switch housing with a quick-release type access port structure according to any one of claims 1-3, characterized in that, The connecting frame includes a connecting seat (31), a connecting cantilever (32) and a cantilever rod (33); the connecting seat (31) is fixedly connected with the outer side wall of the maintenance frame (6), one end of the connecting cantilever (32) is rotatably connected with the connecting seat (31) through a rotating shaft, one end of the cantilever rod (33) is rotatably connected with the other end of the connecting cantilever (32) through a pin shaft, and the other end of the cantilever rod (33) is used for rotatably connecting with the quick release mechanism.

5. The GIS switch housing having a quick-release type access port structure according to claim 4, characterized in that, The end of the connecting cantilever (32) away from the connecting seat (31) is provided with an arc-shaped limiting groove, and the arc-shaped limiting groove extends along the rotating track of the connecting cantilever (32); the end of the cantilever rod (33) close to the connecting cantilever (32) is provided with an elastic limiting bead, and the elastic limiting bead is adapted to the arc-shaped limiting groove; when the maintenance door (7) is completely opened, the elastic limiting bead is clamped into the end of the arc-shaped limiting groove to limit the relative rotation of the cantilever rod (33) and the connecting cantilever (32).

6. The GIS switch housing having a quick-release type access port structure according to claim 5, characterized in that, The quick release mechanism comprises a mounting cylinder (41), a mounting disc (42), an adjusting rod (43) and a check assembly; the top end of the mounting cylinder (41) is rotationally connected with the end of the cantilever rod (33) away from the cantilever (32), the mounting disc (42) is coaxially fixedly connected to the middle part of the outer sidewall of the mounting cylinder (41); one end of the adjusting rod (43) is fixedly connected with the center position of the outer sidewall of the access door (7), the other end of the adjusting rod (43) penetrates the mounting disc (42) and the mounting cylinder (41) in sequence and rotationally cooperates with the mounting cylinder (41); the check assembly is arranged on the outer sidewall of the mounting disc (42), one end of the check assembly is clamped with the adjusting rod (43) for limiting the reverse rotation of the adjusting rod (43) to keep the stable connection between the access door (7) and the access frame (6).

7. The GIS switch housing having a quick-release type access port structure according to claim 6, characterized in that, The check assembly comprises a check ratchet wheel (441), a check pawl (442), a limiting plate (443) and a close spring (444); the check ratchet wheel (441) is coaxially fixedly sleeved on the outer sidewall of the adjusting rod (43) and located between the mounting disc (42) and the access door (7); the check pawl (442) is rotationally arranged on the sidewall of the mounting disc (42) facing the access door (7) through a pin shaft, one end of the check pawl (442) is clamped with the ratchet teeth of the check ratchet wheel (441); the limiting plate (443) is fixedly connected to the sidewall of the mounting disc (42) facing the access door (7) and located on the other side of the check pawl (442); one end of the close spring (444) is fixedly connected with the sidewall of the limiting plate (443) and the other end of the close spring (444) is fixedly connected with the middle part of the check pawl (442), the check pawl (442) is tightly clamped with the ratchet teeth of the check ratchet wheel (441) under the elastic force of the close spring (444) to realize one-way check.

8. The GIS switch housing having a quick-release type access port structure according to claim 7, characterized in that, The check pawl (442) is integrally formed with an operating handle on the side away from the clamped end of the check ratchet wheel (441); the operating handle extends away from the check pawl (442) and the outer wall of the operating handle is sleeved with an anti-skid rubber sleeve for conveniently driving the check pawl (442) to rotate around the pin shaft to disengage the ratchet teeth of the check ratchet wheel (441).

9. The GIS switch housing having a quick release type access port structure according to claim 6, wherein, The end of the adjusting rod (43) away from the access door (7) extends to the outside of the mounting cylinder (41) after penetrating the mounting cylinder (41) and a regulating hand wheel (45) is fixedly connected to the end, the outer sidewall of the regulating hand wheel (45) is provided with anti-skid lines for driving the adjusting rod (43) to rotate to realize the clamping or separation of the access door (7) and the access frame (6).

10. The GIS switch housing having a quick-release type access port structure according to claim 6, characterized in that, The inner wall of the mounting cylinder (41) is provided with an annular guide sleeve made of self-lubricating wear-resistant material; the inner hole of the annular guide sleeve is matched with the outer wall of the adjusting rod (43) and the adjusting rod (43) penetrates the annular guide sleeve and rotationally cooperates with the annular guide sleeve to reduce the friction loss of the adjusting rod (43) when rotating.

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