Gas-insulated switchgear

Abstract

The invention belongs to the technical field of high-voltage switch equipment, and particularly discloses an inflatable cabinet. According to the gas-insulated switchgear provided by the invention, interlocking of the three-station operating mechanism and the circuit breaker is realized, the isolation position and the grounding position of the three-station operating mechanism are respectively and correspondingly provided with the first interlocking module and the second interlocking module, and the third interlocking module can be respectively and independently driven; the third interlocking module can limit the movement of the first interlocking module and the second interlocking module at the same time, interlocking of the three-position operating mechanism and the circuit breaker is achieved, the structure is simple, the first interlocking module, the second interlocking module and the third interlocking module all move linearly, the size is small, space is not occupied, the action stability of the interlocking mechanism is improved, and the operating efficiency is improved. The three-station operating mechanism and the circuit breaker can be ensured to be interlocked in place, and the safety coefficient of the gas-insulated switchgear is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage switchgear, and in particular to an inflatable cabinet. Background Art

[0002] A gas cabinet typically consists of a circuit breaker chamber, a main gas chamber, and a three-position operating mechanism. The main gas chamber houses an isolating switch, which is controlled by the three-position operating mechanism. The circuit breaker chamber houses a circuit breaker. When the circuit breaker is in the closed position, the three-position operating mechanism cannot perform isolation or grounding operations. When the circuit breaker is in the open position, the three-position operating mechanism can perform isolation or grounding operations, and the circuit breaker cannot be closed. A mechanical interlock is required between the three-position operating mechanism and the circuit breaker to prevent accidental operation, but existing mechanical interlock structures are complex and have poor reliability. Summary of the Invention

[0003] The object of the present invention is to provide an inflatable cabinet, which realizes effective interlocking between a circuit breaker and a three-position operating mechanism, and the interlocking mechanism has a simple structure and high reliability.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] An inflatable cabinet, comprising:

[0006] a circuit breaker chamber, wherein a circuit breaker is arranged in the circuit breaker chamber;

[0007] A mother gas chamber, wherein an isolating switch is provided in the mother gas chamber;

[0008] A three-position operating mechanism for controlling the operation of the disconnector;

[0009] An interlocking mechanism, comprising a first interlocking module, a second interlocking module and a third interlocking module, wherein the first interlocking module and the second interlocking module are respectively connected to the three-station operating mechanism;

[0010] When the circuit breaker is in the open position, the three-position operating mechanism is used to place the disconnector in the isolated position and move the first interlocking module in a first direction. The movement of the first interlocking module in the first direction causes the third interlocking module to move in a second direction, and the third interlocking module locks the circuit breaker in the open position.

[0011] Alternatively, when the circuit breaker is in the open position, the three-position operating mechanism is used to place the disconnector in the grounding position and move the second interlock module along the third direction. The movement of the second interlock module along the third direction causes the third interlock module to move along the second direction, and the third interlock module locks the circuit breaker in the open position.

[0012] Alternatively, when the circuit breaker is in the closed position, the circuit breaker locks the third interlock module in the second direction, so that the third interlock module restricts the first interlock module from moving in the first direction and restricts the second interlock module from moving in the third direction, and the three-position operating mechanism places the disconnector in the unlocked position;

[0013] The first direction is perpendicular to the second direction, and the first direction is collinear with the third direction and in opposite directions.

[0014] As an optional technical solution of the above-mentioned inflatable cabinet, the first interlocking module includes a first linkage portion, the second interlocking module includes a second linkage portion, and the third interlocking module includes a third linkage portion. The third linkage portion includes a first inclined surface and a second inclined surface, the first inclined surface is arranged toward the side indicated by the first direction, and the second inclined surface is arranged toward the side indicated by the third direction;

[0015] When the circuit breaker is in the closed position, the third linkage portion is placed between the first linkage portion and the second linkage portion, and the first linkage portion contacts the second inclined surface, and the second linkage portion contacts the first inclined surface;

[0016] When the circuit breaker is in the open position, the three-position operating mechanism can enable the first linkage part to move along the first direction and press against the second inclined surface, or enable the second linkage part to move along the third direction and press against the first inclined surface, so that the third interlocking module moves along the second direction and locks the circuit breaker in the open position.

[0017] As an optional technical solution for the above-mentioned inflatable cabinet, the third interlocking module also includes a transmission member and a locking member, one end of the transmission member is connected to the third linkage part, and the other end of the transmission member is placed in the circuit breaker chamber and connected to the locking member, and the locking member is used to lock the circuit breaker in the open position. The transmission member is connected to an elastic member. When the three-position operating mechanism puts the disconnector in the unlocked position, the elastic member is configured to move the transmission member in the second direction, so that the locking member unlocks the circuit breaker. At the same time, the third linkage part causes the first linkage part to move along the third direction and contact the second inclined surface, or causes the second linkage part to move along the first direction and contact the first inclined surface.

[0018] As an optional technical solution of the above-mentioned inflatable cabinet, the third interlocking module also includes a fixed base, which includes a first connecting plate, a second connecting plate and a third connecting plate. The two ends of the first connecting plate are respectively connected to the second connecting plate and the third connecting plate at an angle, the second connecting plate and the third connecting plate extend in the same direction, the second connecting plate is connected to the inner wall of the circuit breaker chamber, and the other end of the transmission member is sequentially passed through the side wall of the circuit breaker chamber, the second connecting plate and the third connecting plate, the elastic member is sleeved on the transmission member, and the elastic member is placed between the second connecting plate and the third connecting plate, one end of the elastic member is connected to the transmission member, and the other end of the elastic member is connected to the second connecting plate or the third connecting plate.

[0019] As an optional technical solution of the above-mentioned inflatable cabinet, the first linkage portion includes a first linkage support and a first roller, both ends of the first roller are rotatably connected to the first linkage support, and the first roller is used to roll in contact with the second inclined surface;

[0020] And / or, the second linkage portion includes a second linkage support and a second roller, both ends of the second roller are rotatably connected to the second linkage support, and the second roller is used for rolling contact with the first inclined surface.

[0021] As an optional technical solution for the above-mentioned inflatable cabinet, the third linkage part also includes a plane, which is placed on the top of the third linkage part along the second direction and is located between the first inclined plane and the second inclined plane. The two ends of the plane are respectively connected to the first inclined plane and the second inclined plane. When the isolating switch is in the isolating position or in the grounding position, the first linkage part or the second linkage part is against the plane.

[0022] As an optional technical solution of the above-mentioned inflatable cabinet, the first interlocking module further includes a first interlocking connecting plate, one end of the first interlocking connecting plate is connected to the first linkage portion, and the other end of the first interlocking connecting plate extends along the first direction;

[0023] The second interlocking module further includes a second interlocking connecting plate, one end of which is connected to the second linkage portion, the other end of which extends along the third direction, and one end of which is overlapped with one end of the first interlocking connecting plate.

[0024] As an optional technical solution of the above-mentioned inflatable cabinet, the three-position operating mechanism includes a shell and an operating handle, the shell is provided with an elongated hole, the elongated hole extends along a first direction, one end of the operating handle is placed outside the shell, the other end of the operating handle passes through the elongated hole, and the operating handle can slide along the extension direction of the elongated hole;

[0025] The first interlocking module further includes a first three-station linkage member, which is arranged on a side of the operating handle facing the first direction, and a first linkage groove is recessed on a side of the first three-station linkage member facing the operating handle;

[0026] The second interlocking module further includes a second three-station linkage member, which is arranged on a side of the operating handle facing the third direction, and a second linkage groove is recessed on a side of the second three-station linkage member facing the operating handle;

[0027] When the operating handle is placed in the middle position of the long hole, the second linkage groove and the first linkage groove are overlapped, and the other end of the operating handle is penetrated by the second linkage groove and the first linkage groove; when the operating handle slides along the first direction, the operating handle abuts against the bottom of the first linkage groove and causes the first interlocking module to move along the first direction; when the operating handle slides along the third direction, the operating handle abuts against the bottom of the second linkage groove and causes the second interlocking module to move along the third direction.

[0028] As an optional technical solution of the above-mentioned inflatable cabinet, the three-station operating mechanism includes a housing, a first interlocking positioning member is provided on a side of the housing facing the first direction, and a second interlocking positioning member is provided on a side of the housing facing the third direction;

[0029] The first interlocking module further includes a first guide member, the first guide member is provided with a first guide hole, and the first interlocking positioning member is passed through the first guide hole;

[0030] The second interlocking module further includes a second guide member, the second guide member is provided with a second guide hole, and the second interlocking positioning member is passed through the second guide hole.

[0031] As an optional technical solution of the above-mentioned inflatable cabinet, the mother gas chamber includes a first mother gas chamber and a second mother gas chamber, and the three-station operating mechanism includes a first three-station operating mechanism and a second three-station operating mechanism. The first three-station operating mechanism is used to control the isolating switch in the first mother gas chamber, and the second three-station operating mechanism is used to control the isolating switch in the second mother gas chamber. The first interlocking module is connected to the first three-station operating mechanism and the second three-station operating mechanism, and any one of the first three-station operating mechanism and the second three-station operating mechanism can make the first interlocking module move along the first direction; the second interlocking module is connected to the first three-station operating mechanism and the second three-station operating mechanism, and any one of the first three-station operating mechanism and the second three-station operating mechanism can make the second interlocking module move along the third direction.

[0032] Beneficial effects of the present invention:

[0033] The inflatable cabinet provided by the present invention has a first interlock module and a second interlock module of the interlock mechanism respectively connected to the three-position operating mechanism. When the circuit breaker is in the open position, operating the three-position operating mechanism can place the disconnector in the isolated position. At this time, the first interlock module is simultaneously moved in the first direction. The movement of the first interlock module in the first direction causes the third interlock module to move in the second direction, and the third interlock module locks the circuit breaker in the open position. Alternatively, the three-position operating mechanism can place the disconnector in the grounded position. At this time, the second interlock module is simultaneously moved in the third direction. The movement of the second interlock module in the third direction causes the third interlock module to move in the second direction, and the third interlock module locks the circuit breaker in the open position. When the three-position operating mechanism can be operated, the circuit breaker cannot be operated; when the circuit breaker is in the closed position, the circuit breaker locks the third interlock module in the second direction, so that the third interlock module restricts the movement of the first interlock module in the first direction and restricts the movement of the second interlock module in the third direction. The three-position operating mechanism places the disconnector in the unlocked position, and the three-position operating mechanism cannot be operated. The interlocking mechanism realizes the interlocking of the three-position operating mechanism and the circuit breaker. The isolation position and the grounding position of the three-position operating mechanism are respectively provided with a first interlocking module and a second interlocking module, which can drive the third interlocking module separately. The third interlocking module can also simultaneously limit the movement of the first interlocking module and the second interlocking module to realize the interlocking of the three-position operating mechanism and the circuit breaker. The structure is simple. The first interlocking module, the second interlocking module and the third interlocking module all move in a straight line, are small in size, do not take up space, and also improve the stability of the interlocking mechanism action, ensure that the three-position operating mechanism and the circuit breaker can be interlocked in place, and improve the safety factor of the inflatable cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the structure of the inflatable cabinet provided by an embodiment of the present invention;

[0035] Figure 2 1 is a schematic structural diagram of an interlocking mechanism provided by an embodiment of the present invention;

[0036] Figure 3 is a schematic diagram of the exploded structure of the interlocking mechanism provided in an embodiment of the present invention;

[0037] Figure 4 is a structural diagram of a first interlocking module provided in an embodiment of the present invention;

[0038] Figure 5 is a structural diagram of a second interlocking module provided by an embodiment of the present invention;

[0039] Figure 6 is a structural diagram of a third interlocking module provided in an embodiment of the present invention;

[0040] Figure 7 This is a schematic diagram of the state of the three-position operating mechanism and the interlocking mechanism when the three-position operating mechanism provided by an embodiment of the present invention places the disconnector in the disconnecting position;

[0041] Figure 8 This is a schematic diagram of the interlocking mechanism when the three-position operating mechanism provided by an embodiment of the present invention places the disconnector in the disconnecting position;

[0042] Figure 9 This is a schematic diagram of the state of the three-position operating mechanism and the interlocking mechanism when the three-position operating mechanism provided by an embodiment of the present invention places the disconnector in the grounding position;

[0043] Figure 10 This is a schematic diagram of the interlocking mechanism when the three-position operating mechanism provided by an embodiment of the present invention places the disconnector in the grounding position;

[0044] Figure 11 1 is a schematic diagram of the three-position operating mechanism and the interlocking mechanism when the circuit breaker provided by the embodiment of the present invention is in the closed position;

[0045] Figure 12 The figure is a schematic diagram of the state of the interlocking mechanism when the circuit breaker provided by the embodiment of the present invention is in the closed position.

[0046] In the picture:

[0047] 1. Circuit breaker chamber; 2. Mother gas chamber; 3. Three-position operating mechanism; 4. Interlocking mechanism;

[0048] 2a, first mother gas chamber; 2b, second mother gas chamber;

[0049] 3a, the first three-station operating mechanism; 3b, the second three-station operating mechanism;

[0050] 31. Housing; 311. Long hole; 32. Operating handle; 33. First interlocking positioner; 34. Second interlocking positioner;

[0051] 41. First interlocking module; 411. First linkage portion; 4111. First linkage support; 4112. First roller; 412. First interlocking connecting plate; 413. First three-station linkage member; 4131. First linkage groove; 4132. First connecting rod; 4133. First linkage rod; 414. First guide member; 4141. First guide hole; 42. Second interlocking module; 421. Second linkage portion; 4211. Second linkage support; 4212. Second roller; 422. Second interlocking connecting plate; 423. Second three-station linkage member; 4231. Second linkage slot; 4232, second connecting rod; 4233, second linkage rod; 424, second guide member; 4241, second guide hole; 43, third interlocking module; 431, third linkage part; 4311, first inclined plane; 4312, second inclined plane; 4313, plane; 432, transmission member; 433, locking member; 4331, locking member body; 4332, locking plate; 4333, locking limit plate; 434, elastic member; 435, fixing seat; 4351, first connecting plate; 4352, second connecting plate; 4353, third connecting plate. DETAILED DESCRIPTION

[0052] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0053] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0054] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0055] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0056] like Figures 1 to 3 As shown, this embodiment provides an inflatable cabinet, which includes a circuit breaker chamber 1, a mother gas chamber 2, a three-position operating mechanism 3 and an interlocking mechanism 4. A circuit breaker is provided in the circuit breaker chamber 1, an isolating switch is provided in the mother gas chamber 2, and the three-position operating mechanism 3 is used to control the operation of the isolating switch. The interlocking mechanism 4 includes a first interlocking module 41, a second interlocking module 42 and a third interlocking module 43, and the first interlocking module 41 and the second interlocking module 42 are respectively connected to the three-position operating mechanism 3. When the circuit breaker is in the open position, the three-position operating mechanism 3 is used to place the isolating switch in the isolated position and to move the first interlocking module 41 in the first direction. The movement of the first interlocking module 41 in the first direction causes the third interlocking module 43 to move in the second direction, and the third interlocking module 43 locks the circuit breaker in the open position. Alternatively, when the circuit breaker is in the open position, the three-position operating mechanism 3 is used to place the disconnector in the grounded position and move the second interlock module 42 in the third direction. Movement of the second interlock module 42 in the third direction causes the third interlock module 43 to move in the second direction, and the third interlock module 43 locks the circuit breaker in the open position. Alternatively, when the circuit breaker is in the closed position, the circuit breaker locks the third interlock module 43 in the second direction, causing the third interlock module 43 to restrict movement of the first interlock module 41 in the first direction and restrict movement of the second interlock module 42 in the third direction, and the three-position operating mechanism 3 places the disconnector in the unlocked position.

[0057] The first direction is perpendicular to the second direction, and the first direction is collinear with the third direction and in opposite directions. The second direction is the height direction of the circuit breaker chamber 1 .

[0058] To facilitate operation of the three-position operating mechanism 3, it is located at the front of the circuit breaker chamber 1 in the front-to-back direction. The mother gas chamber 2 is located at the top of the circuit breaker chamber 1 in the height direction. From the front of the circuit breaker chamber 1, the first direction is the left direction of the circuit breaker chamber 1, and the third direction is the right direction of the circuit breaker chamber 1.

[0059] The first interlocking module 41 and the second interlocking module 42 of the interlocking mechanism 4 are respectively connected to the three-position operating mechanism 3. When the circuit breaker is in the open position, the three-position operating mechanism 3 is operated to put the disconnector in the isolated position. At this time, the first interlocking module 41 is moved in the first direction. The first interlocking module 41 moves in the first direction so that the third interlocking module 43 moves in the second direction. The third interlocking module 43 locks the circuit breaker in the open position. Alternatively, the three-position operating mechanism 3 can put the disconnector in the grounding position. At this time, the second interlocking module 42 is moved in the third direction. The second interlock module 42 moves along the third direction to cause the third interlock module 43 to move along the second direction. The third interlock module 43 locks the circuit breaker in the open position. When the three-position operating mechanism 3 can be operated, the circuit breaker cannot be operated. When the circuit breaker is in the closed position, the circuit breaker locks the third interlock module 43 in the second direction, so that the third interlock module 43 restricts the first interlock module 41 from moving along the first direction, and restricts the second interlock module 42 from moving along the third direction. The three-position operating mechanism 3 places the disconnector in the unlocked position, and the three-position operating mechanism 3 cannot be operated. The interlocking mechanism 4 realizes the interlocking of the three-position operating mechanism 3 and the circuit breaker. The isolation position and the grounding position of the three-position operating mechanism 3 correspond to the first interlocking module 41 and the second interlocking module 42, respectively, which can drive the third interlocking module 43 separately. The third interlocking module 43 can also simultaneously limit the movement of the first interlocking module 41 and the second interlocking module 42, thereby realizing the interlocking of the three-position operating mechanism 3 and the circuit breaker. The structure is simple. The first interlocking module 41, the second interlocking module 42 and the third interlocking module 43 all move in a straight line, are small in size, do not take up space, and also improve the stability of the action of the interlocking mechanism 4, ensuring that the three-position operating mechanism 3 and the circuit breaker can be interlocked in place, thereby improving the safety factor of the inflatable cabinet.

[0060] In some embodiments, the mother gas chamber 2 includes a first mother gas chamber 2a and a second mother gas chamber 2b, and the three-position operating mechanism 3 includes a first three-position operating mechanism 3a and a second three-position operating mechanism 3b. The first three-position operating mechanism 3a is used to control the isolating switch in the first mother gas chamber 2a, and the second three-position operating mechanism 3b is used to control the isolating switch in the second mother gas chamber 2b. The first interlocking module 41 is connected to the first three-position operating mechanism 3a and the second three-position operating mechanism 3b. Any one of the first three-position operating mechanism 3a and the second three-position operating mechanism 3b can make the first interlocking module 41 move along the first direction. When any one of the three-position operating mechanisms 3 is operated, the circuit breaker cannot be operated. The structure is simple, and multiple three-position operating mechanisms 3 are interlocked with the circuit breaker at the same time. The second interlocking module 42 is connected to the first three-position operating mechanism 3a and the second three-position operating mechanism 3b. Any one of the first three-position operating mechanism 3a and the second three-position operating mechanism 3b can move the second interlocking module 42 along the third direction. When any one of the three-position operating mechanisms 3 is operated, the circuit breaker cannot be operated. The structure is simple, and multiple three-position operating mechanisms 3 are interlocked with the circuit breaker at the same time, solving the problem in the prior art that each three-position operating mechanism 3 is interlocked with the circuit breaker separately, the structure is complex, and there is a risk of misoperation.

[0061] Optionally, along the front-to-back direction of the circuit breaker chamber 1, the first three-position operating mechanism 3a and the second three-position operating mechanism 3b are both arranged on the front side of the circuit breaker chamber 1, and the first three-position operating mechanism 3a and the second three-position operating mechanism 3b are arranged along the height direction of the circuit breaker chamber 1, which is convenient for operating the first three-position operating mechanism 3a and the second three-position operating mechanism 3b, and also convenient for connecting the first interlocking module 41 with the two three-position operating mechanisms 3 and the second interlocking module 42 with the two three-position operating mechanisms 3, thereby simplifying the structure of the interlocking mechanism 4 and improving the stability of the action of the interlocking mechanism 4.

[0062] In some embodiments, as Figures 3 to 6As shown, the first interlocking module 41 includes a first linkage portion 411, the second interlocking module 42 includes a second linkage portion 421, and the third interlocking module 43 includes a third linkage portion 431. The third linkage portion 431 includes a first inclined surface 4311 and a second inclined surface 4312. The first inclined surface 4311 is arranged toward the side indicated by the first direction, and the second inclined surface 4312 is arranged toward the side indicated by the third direction. Specifically, along the second direction, the first inclined surface 4311 and the second inclined surface 4312 are both arranged to be inclined from bottom to top. When the circuit breaker is in the closed position, the third linkage portion 431 is placed between the first linkage portion 411 and the second linkage portion 421, and the first linkage portion 411 contacts the second inclined surface 4312, and the second linkage portion 421 contacts the first inclined surface 4311. When the circuit breaker is in the open position, the three-position operating mechanism 3 can cause the first linkage portion 411 to move in the first direction and press against the second inclined surface 4312, or cause the second linkage portion 421 to move in the third direction and press against the first inclined surface 4311, thereby moving the third interlocking module 43 in the second direction and locking the circuit breaker in the open position. The movement of the first interlocking module 41 in the first direction cooperates with the first inclined surface 4311 of the third linkage portion 431 to cause the third interlocking module 43 to move in the second direction. The movement of the second interlocking module 42 in the third direction cooperates with the second inclined surface 4312 of the third linkage portion 431 to cause the third interlocking module 43 to move in the second direction. This structure is simple, and the coordination between the first interlocking module 41, the second interlocking module 42, and the third interlocking module 43 is stable.

[0063] Optionally, the third linkage portion 431 is a triangular linkage block, and the two inclined surfaces of the triangle are respectively a first inclined surface 4311 and a second inclined surface 4312 , which has a simple structure and is easy to process.

[0064] In some embodiments, the third linkage portion 431 further includes a plane 4313, which is positioned along the second direction at the top of the third linkage portion 431 and between the first inclined surface 4311 and the second inclined surface 4312. The two ends of the plane 4313 are respectively connected to the first inclined surface 4311 and the second inclined surface 4312. When the disconnector is in the isolated position or the grounded position, the first linkage portion 411 or the second linkage portion 421 abuts against the plane 4313 to maintain a stable position for the first linkage portion 411 or the second linkage portion 421, thereby preventing the first linkage portion 411 or the second linkage portion 421 from shifting and resetting the third interlocking module 43. The first linkage portion 411 or the second linkage portion 421 is positioned at the highest point of the third linkage portion 431, allowing the third interlocking module 43 to move downward in the second direction and into position, thereby preventing the third interlocking module 43 from locking the circuit breaker. Optionally, the two ends of the plane 4313 are smoothly transitioned to the first inclined surface 4311 and the second inclined surface 4312, respectively.

[0065] The third interlock module 43 further includes a transmission member 432 and a locking member 433. One end of the transmission member 432 is connected to the third linkage portion 431, and the other end of the transmission member 432 is disposed within the circuit breaker chamber 1 and connected to the locking member 433. The locking member 433 is used to lock the circuit breaker in the open position. The transmission member 432 is connected to an elastic member 434. When the three-position operating mechanism 3 places the disconnector in the unlocked position, the elastic member 434 is configured to move the transmission member 432 in the second direction, causing the locking member 433 to unlock the circuit breaker. Simultaneously, the third linkage portion 431 causes the first linkage portion 411 to move in the third direction and contact the second inclined surface 4312, or causes the second linkage portion 421 to move in the first direction and contact the first inclined surface 4311. In other words, when the three-position operating mechanism 3 places the disconnector in the unlocked position, the elastic member 434 causes the transmission member 432 to move in the second direction, resetting the first and second interlock modules 41 and 42. After the first interlock module 41 is reset, the first linkage portion 411 contacts the second inclined surface 4312. After the second interlock module 42 is reset, the second linkage portion 421 contacts the first inclined surface 4311. When the first interlock module 41 moves in the first direction or the second interlock module 42 moves in the third direction, the elastic member 434 is compressed to store energy. When the three-position operating mechanism 3 places the disconnector in the unlocked position, the elastic member 434 releases the energy to reset the first and second interlock modules 41, 42. The first interlock module 41 is reset by moving in the third direction, while the second interlock module 42 is reset by moving in the first direction.

[0066] Optionally, the third interlocking module 43 also includes a fixed base 435, which includes a first connecting plate 4351, a second connecting plate 4352 and a third connecting plate 4353. The two ends of the first connecting plate 4351 are respectively connected to the second connecting plate 4352 and the third connecting plate 4353 at an angle, the second connecting plate 4352 and the third connecting plate 4353 extend in the same direction, the second connecting plate 4352 is connected to the inner wall of the circuit breaker chamber 1, and the other end of the transmission member 432 is sequentially passed through the side wall of the circuit breaker chamber 1, the second connecting plate 4352 and the third connecting plate 4353, the elastic member 434 is sleeved on the transmission member 432, and the elastic member 434 is placed between the second connecting plate 4352 and the third connecting plate 4353, one end of the elastic member 434 is connected to the transmission member 432, and the other end of the elastic member 434 is connected to the second connecting plate 4352 or the third connecting plate 4353. The first connecting plate 4351, the second connecting plate 4352, and the third connecting plate 4353 enclose a space to accommodate the elastic member 434. The second connecting plate 4352 and the third connecting plate 4353 provide guidance for the movement of the transmission member 432 in the second direction. An opening is provided in the side wall of the circuit breaker chamber 1. The fixing seat 435 and the locking member 433 are both disposed within the circuit breaker chamber 1. The transmission member 432 extends through the opening and engages with the fixing seat 435 and the locking member 433.

[0067] The locking member 433 is used to lock the circuit breaker. Specifically, the locking member 433 is used to block the closing coil of the circuit breaker, preventing the circuit breaker from closing. The locking member 433 includes a locking member body 4331, a locking plate 4332, and a locking limit plate 4333. The locking member body 4331 is connected to the other end of the transmission member 432. The locking plate 4332 and the locking limit plate 4333 are respectively connected to the locking member body 4331. The locking plate 4332 extends along the second direction, and the extension direction of the locking limit plate 4333 is perpendicular to the extension direction of the locking plate 4332. The locking plate 4332 is used to block the closing coil of the circuit breaker. When the locking plate 4332 blocks the closing coil of the circuit breaker, the locking limit plate 4333 abuts against components within the circuit breaker chamber 1, preventing the locking plate 4332 from excessively moving and damaging other structures of the circuit breaker.

[0068] In some embodiments, the first linkage portion 411 includes a first linkage support 4111 and a first roller 4112. Both ends of the first roller 4112 are rotatably connected to the first linkage support 4111. The first roller 4112 is configured to roll in contact with the second inclined surface 4312 to reduce friction during relative movement between the first linkage portion 411 and the second inclined surface 4312, thereby reducing wear on the first linkage portion 411 and the third linkage portion 431, and extending the service life of each component. The first roller 4112 can move from the second inclined surface 4312 to a plane 4313, where the width of the plane 4313 is greater than or equal to the outer diameter of the first roller 4112, or the first roller 4112 can move from the plane 4313 to the second inclined surface 4312. Optionally, the first linkage support 4111 is a U-shaped support, with both ends of the first roller 4112 rotatably connected to opposite side walls of the first linkage support 4111.

[0069] The second linkage portion 421 includes a second linkage support 4211 and a second roller 4212. Both ends of the second roller 4212 are rotatably connected to the second linkage support 4211. The second roller 4212 is configured to roll in contact with the first inclined surface 4311 to reduce friction during relative movement between the second linkage portion 421 and the first inclined surface 4311, thereby reducing wear on the second linkage portion 421 and the third linkage portion 431, and extending the service life of each component. The second roller 4212 can move from the first inclined surface 4311 to a flat surface 4313, where the width of the flat surface 4313 is greater than or equal to the outer diameter of the second roller 4212, or the second roller 4212 can move from the flat surface 4313 to the first inclined surface 4311. The outer diameter of the second roller 4212 is the same as that of the first roller 4112. Optionally, the second linkage support 4211 is a U-shaped support, with both ends of the second roller 4212 rotatably connected to opposite side walls of the second linkage support 4211.

[0070] In some embodiments, the first interlocking module 41 further includes a first interlocking connecting plate 412, one end of which is connected to the first linkage portion 411, and the other end of which extends along the first direction. The second interlocking module 42 further includes a second interlocking connecting plate 422, one end of which is connected to the second linkage portion 421, and the other end of which extends along the third direction. One end of the second interlocking connecting plate 422 is arranged to overlap with one end of the first interlocking connecting plate 412, so that the first linkage portion 411 contacts the second inclined surface 4312, and the second linkage portion 421 contacts the first inclined surface 4311.

[0071] One end of the first interlocking connecting plate 412 is connected to the U-shaped first linkage support 4111, and one end of the second interlocking connecting plate 422 is connected to the U-shaped second linkage support 4211. The width of the first interlocking connecting plate 412 is smaller than the width of the second interlocking connecting plate 422, the width of the first linkage support 4111 is smaller than the width of the second linkage support 4211, the width of the first linkage support 4111 is smaller than the width of the second linkage support 4211, and the first linkage support 4111 can pass through the second linkage support 4211. The first interlocking connecting plate 412 and the second interlocking connecting plate 422 are arranged to overlap, and can play a role of mutual guidance when the first interlocking module 41 or the second interlocking module 42 moves.

[0072] like Figure 7 and Figure 8 As shown, the three-station operating mechanism 3 includes a housing 31 and an operating handle 32. The housing 31 is provided with an elongated hole 311 extending in a first direction. One end of the operating handle 32 is positioned outside the housing 31, and the other end of the operating handle 32 is penetrated by the elongated hole 311. The operating handle 32 can slide along the extending direction of the elongated hole 311. The first interlocking module 41 also includes a first three-station linkage 413. The first three-station linkage 413 is disposed on the side of the operating handle 32 facing the first direction, and a first linkage groove 4131 is recessed on the side of the first three-station linkage 413 facing the operating handle 32. The second interlocking module 42 also includes a second three-station linkage 423. The second three-station linkage 423 is disposed on the side of the operating handle 32 facing the third direction, and a second linkage groove 4231 is recessed on the side of the second three-station linkage 423 facing the operating handle 32. When the operating handle 32 is placed in the middle of the long hole 311, the second linkage groove 4231 and the first linkage groove 4131 are superimposed, and the other end of the operating handle 32 passes through the second linkage groove 4231 and the first linkage groove 4131; when the operating handle 32 slides along the first direction, the operating handle 32 abuts against the bottom of the first linkage groove 4131 and causes the first interlocking module 41 to move along the first direction; Figure 9 and Figure 10As shown, when the operating handle 32 slides along the third direction, the operating handle 32 abuts against the bottom of the second linkage groove 4231 and moves the second interlocking module 42 along the third direction. The structure of the first interlocking module 41, the second interlocking module 42 and the three-position operating mechanism 3 is simple and easy to implement.

[0073] Optionally, the first three-station linkage member 413 includes a first connecting rod 4132 and a first linkage rod 4133. One end of the first connecting rod 4132 is connected to the first interlocking connecting plate 412, and the other end of the first connecting rod 4132 extends along the second direction. One end of the first linkage rod 4133 is connected to the first connecting rod 4132, and the other end of the first linkage rod 4133 extends toward the operating handle 32. The other end of the first linkage rod 4133 is recessed with a first linkage groove 4131. The number of first linkage rods 4133 provided corresponds to the number of three-station operating mechanisms 3 provided. The multiple first linkage rods 4133 are spaced apart along the second direction, and the multiple three-station operating mechanisms 3 are arranged in an array along the second direction.

[0074] The second three-station linkage 423 includes a second connecting rod 4232 and a second connecting rod 4233. One end of the second connecting rod 4232 is connected to the second interlocking connecting plate 422, and the other end of the second connecting rod 4232 extends in the second direction. One end of the second connecting rod 4233 is connected to the second connecting rod 4232, and the other end of the second connecting rod 4233 extends toward the operating handle 32. The other end of the second connecting rod 4233 is recessed with a second connecting groove 4231. The number of second connecting rods 4233 provided corresponds to the number of three-station operating mechanisms 3 provided. The multiple second connecting rods 4233 are spaced apart along the second direction, and the multiple three-station operating mechanisms 3 are arranged in an array along the second direction.

[0075] Continue to refer to Figure 7 、 Figure 9 and Figure 10 As shown, the housing 31 of the three-station operating mechanism 3 is provided with a first interlocking positioner 33 on the side facing the first direction, and a second interlocking positioner 34 on the side facing the third direction. The first interlocking module 41 also includes a first guide member 414, which is provided with a first guide hole 4141, and the first interlocking positioner 33 is inserted into the first guide hole 4141. When the first interlocking module 41 moves in the first direction or the third direction, the first guide member 414 moves relative to the first interlocking positioner 33. The second interlocking module 42 also includes a second guide member 424, which is provided with a second guide hole 4241, and the second interlocking positioner 34 is inserted into the second guide hole 4241. When the second interlocking module 42 moves in the third direction or the first direction, the second guide member 424 moves relative to the second interlocking positioner 34.

[0076] Optionally, the first guide member 414 is a rod-shaped structure, one end of which is connected to the first interlock connecting plate 412, and the other end of which extends along the second direction. To enhance the structural strength of the first interlock module 41, the first guide member 414 is connected to the first connecting rod 4132 via a reinforcing plate. The number of first guide holes 4141 provided on the first guide member 414 corresponds to the number of three-station operating mechanisms 3. The multiple first guide holes 4141 are spaced apart along the second direction, and the multiple three-station operating mechanisms 3 are arranged sequentially along the second direction.

[0077] The second guide member 424 is a rod-shaped structure. One end of the second guide member 424 is connected to the second interlock connecting plate 422, and the other end of the second guide member 424 extends along the second direction. To enhance the structural strength of the second interlock module 42, the second guide member 424 is connected to the second connecting rod 4232 via a reinforcing plate. The number of yokes provided in the second guide holes 4241 on the second guide member 424 corresponds to the number of yokes provided in the three-station operating mechanism 3. Multiple second guide holes 4241 are spaced apart along the second direction, and the multiple three-station operating mechanisms 3 are arranged sequentially along the second direction.

[0078] The other structures of the circuit breaker chamber 1, the mother gas chamber 2 and the three-position operating mechanism 3 are prior art and will not be described in detail here.

[0079] In actual application, the inflatable cabinet provided in this embodiment may have the following three situations:

[0080] 1. As Figure 7 and Figure 8 As shown, to open the circuit breaker, the operating handle 32 of the three-position operating mechanism 3 is toggled in the first direction, operating the three-position operating mechanism 3 to place the disconnector in the mother gas chamber 2 in the isolated position. Simultaneously, the operating handle 32 drives the first interlock module 41 to move in the first direction. This movement of the first interlock module 41 in the first direction causes the third interlock module 43 to move in the second direction, locking the circuit breaker in the open position. The cooperative relationship between the operating handle 32 and the first interlock module 41, as well as the cooperative relationship between the first interlock module 41 and the third interlock module 43, is as described above.

[0081] 2. If Figure 9 and Figure 10As shown, to open the circuit breaker, the operating handle 32 of the three-position operating mechanism 3 is toggled in the third direction. This operates the three-position operating mechanism 3 to place the disconnector in the mother gas chamber 2 in the grounded position. Simultaneously, the operating handle 32 drives the second interlock module 42 to move in the third direction. This movement of the second interlock module 42 in the third direction causes the third interlock module 43 to move in the second direction, locking the circuit breaker in the open position. The cooperative relationship between the operating handle 32 and the second interlock module 42, as well as the cooperative relationship between the second interlock module 42 and the third interlock module 43, is described above.

[0082] 3. Figure 11 and Figure 12 As shown, the circuit breaker is in the closed position, and the circuit breaker locks the third interlock module 43 in the second direction, so that the third linkage part 431 of the third interlock module 43 is placed between the first linkage part 411 and the second linkage part 421, the first linkage part 411 is against the second inclined surface 4312, and the second linkage part 421 is against the first inclined surface 4311. The third interlock module 43 limits the movement of the first interlock module 41 along the first direction, and limits the movement of the second interlock module 42 along the third direction. The three-position operating mechanism 3 puts the disconnector in the unlocked position. At this time, the three-position operating mechanism 3 is locked and the operating handle 32 cannot be operated.

[0083] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An inflatable cabinet, characterized in that: include: A circuit breaker chamber (1), wherein a circuit breaker is provided in the circuit breaker chamber (1); A mother gas chamber (2), wherein an isolating switch is provided in the mother gas chamber (2); A three-position operating mechanism (3) for controlling the operation of the isolating switch; An interlocking mechanism (4) comprising a first interlocking module (41), a second interlocking module (42) and a third interlocking module (43), wherein the first interlocking module (41) and the second interlocking module (42) are respectively connected to the three-station operating mechanism (3); When the circuit breaker is in the open position, the three-position operating mechanism (3) is used to place the disconnector in the isolated position and to move the first interlocking module (41) along a first direction. The movement of the first interlocking module (41) along the first direction causes the third interlocking module (43) to move along a second direction, and the third interlocking module (43) locks the circuit breaker in the open position. Alternatively, when the circuit breaker is in the open position, the three-position operating mechanism (3) is used to place the disconnector in the grounding position and to move the second interlocking module (42) along a third direction, wherein the movement of the second interlocking module (42) along the third direction causes the third interlocking module (43) to move along the second direction, and the third interlocking module (43) locks the circuit breaker in the open position; Alternatively, when the circuit breaker is in the closed position, the circuit breaker locks the third interlocking module (43) in the second direction, so that the third interlocking module (43) restricts the first interlocking module (41) from moving in the first direction, and restricts the second interlocking module (42) from moving in the third direction, and the three-position operating mechanism (3) places the disconnector in the unlocked position; The first direction is perpendicular to the second direction, and the first direction is collinear with the third direction and in opposite directions.

2. The inflatable cabinet according to claim 1, characterized in that: The first interlocking module (41) includes a first linkage portion (411), the second interlocking module (42) includes a second linkage portion (421), the third interlocking module (43) includes a third linkage portion (431), the third linkage portion (431) includes a first inclined surface (4311) and a second inclined surface (4312), the first inclined surface (4311) is arranged toward a side indicated by a first direction, and the second inclined surface (4312) is arranged toward a side indicated by a third direction; When the circuit breaker is in the closed position, the third linkage part (431) is placed between the first linkage part (411) and the second linkage part (421), and the first linkage part (411) contacts the second inclined surface (4312), and the second linkage part (421) contacts the first inclined surface (4311); When the circuit breaker is in the open position, the three-position operating mechanism (3) can enable the first linkage part (411) to move in a first direction and press against the second inclined surface (4312), or enable the second linkage part (421) to move in a third direction and press against the first inclined surface (4311), so as to enable the third interlocking module (43) to move in the second direction and lock the circuit breaker in the open position.

3. The inflatable cabinet according to claim 2, characterized in that: The third interlocking module (43) further comprises a transmission member (432) and a locking member (433), one end of the transmission member (432) being connected to the third linkage portion (431), the other end of the transmission member (432) being placed in the circuit breaker chamber (1) and connected to the locking member (433), the locking member (433) being used to lock the circuit breaker in the open position, the transmission member (432) being connected to an elastic member (434), and when the three-position operating mechanism (3) places the disconnector in the unlocked position, the elastic member (434) is configured to move the transmission member (432) in the second direction, causing the locking member (433) to unlock the circuit breaker, while the third linkage portion (431) causes the first linkage portion (411) to move in the third direction and contact the second inclined surface (4312), or causes the second linkage portion (421) to move in the first direction and contact the first inclined surface (4311).

4. The inflatable cabinet according to claim 3, characterized in that: The third interlocking module (43) further comprises a fixing seat (435), the fixing seat (435) comprising a first connecting plate (4351), a second connecting plate (4352) and a third connecting plate (4353), the two ends of the first connecting plate (4351) being connected to the second connecting plate (4352) and the third connecting plate (4353) at an angle, the second connecting plate (4352) and the third connecting plate (4353) extending in the same direction, the second connecting plate (4352) being connected to the inner side wall of the circuit breaker chamber (1), the transmission member The other end of (432) is sequentially passed through the side wall of the circuit breaker chamber (1), the second connecting plate (4352) and the third connecting plate (4353), the elastic member (434) is sleeved on the transmission member (432), and the elastic member (434) is placed between the second connecting plate (4352) and the third connecting plate (4353), one end of the elastic member (434) is connected to the transmission member (432), and the other end of the elastic member (434) is connected to the second connecting plate (4352) or the third connecting plate (4353).

5. The inflatable cabinet according to claim 2, characterized in that: The first linkage portion (411) comprises a first linkage support (4111) and a first roller (4112), both ends of the first roller (4112) are rotatably connected to the first linkage support (4111), and the first roller (4112) is used for rolling contact with the second inclined surface (4312); And / or, the second linkage portion (421) includes a second linkage support (4211) and a second roller (4212), both ends of the second roller (4212) are rotatably connected to the second linkage support (4211), and the second roller (4212) is used to roll in contact with the first inclined surface (4311).

6. The inflatable cabinet according to claim 2, characterized in that: The third linkage part (431) further includes a plane (4313), which is placed at the top of the third linkage part (431) along the second direction and between the first inclined surface (4311) and the second inclined surface (4312). The two ends of the plane (4313) are respectively connected to the first inclined surface (4311) and the second inclined surface (4312). When the disconnector is in the disconnecting position or the grounding position, the first linkage part (411) or the second linkage part (421) abuts against the plane (4313).

7. The inflatable cabinet according to claim 2, characterized in that: The first interlocking module (41) further includes a first interlocking connecting plate (412), one end of the first interlocking connecting plate (412) is connected to the first linkage portion (411), and the other end of the first interlocking connecting plate (412) extends along a first direction; The second interlocking module (42) further comprises a second interlocking connecting plate (422), one end of the second interlocking connecting plate (422) being connected to the second linkage portion (421), the other end of the second interlocking connecting plate (422) extending along a third direction, and one end of the second interlocking connecting plate (422) being arranged to overlap with one end of the first interlocking connecting plate (412).

8. The inflatable cabinet according to claim 1, characterized in that: The three-station operating mechanism (3) comprises a housing (31) and an operating handle (32); the housing (31) is provided with an elongated hole (311), the elongated hole (311) extends along a first direction, one end of the operating handle (32) is placed outside the housing (31), the other end of the operating handle (32) is penetrated by the elongated hole (311), and the operating handle (32) can slide along the extending direction of the elongated hole (311); The first interlocking module (41) further comprises a first three-station linkage member (413), the first three-station linkage member (413) being arranged on a side of the operating handle (32) facing the first direction, and a first linkage groove (4131) being recessed on a side of the first three-station linkage member (413) facing the operating handle (32); The second interlocking module (42) further comprises a second three-station linkage member (423), the second three-station linkage member (423) being arranged on a side of the operating handle (32) facing the third direction, and a second linkage groove (4231) being recessed on a side of the second three-station linkage member (423) facing the operating handle (32); When the operating handle (32) is placed in the middle position of the long hole (311), the second linkage groove (4231) and the first linkage groove (4131) are superimposed, and the other end of the operating handle (32) is penetrated by the second linkage groove (4231) and the first linkage groove (4131); when the operating handle (32) slides along the first direction, the operating handle (32) abuts against the bottom of the first linkage groove (4131) and causes the first interlocking module (41) to move along the first direction; when the operating handle (32) slides along the third direction, the operating handle (32) abuts against the bottom of the second linkage groove (4231) and causes the second interlocking module (42) to move along the third direction.

9. The inflatable cabinet according to claim 1, characterized in that: The three-station operating mechanism (3) comprises a housing (31), a first interlocking positioning member (33) is provided on a side of the housing (31) facing the first direction, and a second interlocking positioning member (34) is provided on a side of the housing (31) facing the third direction; The first interlocking module (41) further includes a first guide member (414), the first guide member (414) is provided with a first guide hole (4141), and the first interlocking positioning member (33) is passed through the first guide hole (4141); The second interlocking module (42) further comprises a second guide member (424), the second guide member (424) being provided with a second guide hole (4241), and the second interlocking positioning member (34) being passed through the second guide hole (4241).

10. The inflatable cabinet according to any one of claims 1 to 9, characterized in that: The mother gas chamber (2) includes a first mother gas chamber (2a) and a second mother gas chamber (2b); the three-station operating mechanism (3) includes a first three-station operating mechanism (3a) and a second three-station operating mechanism (3b); the first three-station operating mechanism (3a) is used to control the isolating switch in the first mother gas chamber (2a); the second three-station operating mechanism (3b) is used to control the isolating switch in the second mother gas chamber (2b); the first interlocking module (41) is connected to the first three-station operating mechanism (3a) and the second three-station operating mechanism (3b); The first three-station operating mechanism (3a) and the second three-station operating mechanism (3b) are connected, and any one of the first three-station operating mechanism (3a) and the second three-station operating mechanism (3b) can make the first interlocking module (41) move along the first direction; the second interlocking module (42) is connected to the first three-station operating mechanism (3a) and the second three-station operating mechanism (3b), and any one of the first three-station operating mechanism (3a) and the second three-station operating mechanism (3b) can make the second interlocking module (42) move along the third direction.

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