10kv environmentally friendly gas-filled cabinet high-reliability interlocking device and method of using same

Abstract

The application discloses a 10kV environmentally-friendly gas-filled cabinet high-reliability mechanism interlocking device and a use method thereof, which comprises a cabinet door, a cabinet body, a mechanical lock, a lock tongue, a sleeve, a clamping block and a wedge block; the use method comprises the following steps: step one, assembling the device; step two, installing the device; step three, door opening operation; and step four, door closing operation; the first trigger plate and the second trigger plate are fixed on the sleeve, so that they can rotate coaxially with the sleeve, thereby realizing synchronous operation of the disconnecting switch and the grounding switch; meanwhile, the sleeve state is automatically locked by the clamping block, so that the sleeve cannot rotate after the door is opened, and thus, the switch state change caused by the misoperation after the door is opened is avoided; the mechanical lock arranged in the sleeve is used for locking the sleeve, so that the cabinet door cannot be opened without a key, and thus, the safety of the gas-filled cabinet is improved; and the application has the advantages of simple structure, good reliability, easy assembly and low cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of interlocking devices, in particular to a 10kV environmentally friendly gas-filled cabinet high-reliability mechanism interlocking device and a use method thereof. BACKGROUND

[0002] An interlocking device is a safety protection device that ensures that the device is in a shutdown state when the protection device is opened, thereby protecting the safety of maintenance personnel. The specific requirements for the 10kV environmentally friendly gas-filled cabinet interlocking device are as follows: when the grounding switch is closed, the disconnecting switch cannot be operated; when the grounding switch is opened, the disconnecting switch is allowed to be operated; when the grounding switch is closed, the cable room door can be opened for maintenance; the cable room door cannot be closed, and power transmission cannot be performed. The existing interlocking device, such as the 10kV environmentally friendly gas-filled cabinet high-reliability mechanism interlocking device and the use method thereof disclosed in patent CN 114823215A, can meet the above requirements, but it has the following defects: first, the mechanisms lack linkage, resulting in a complex use method. In a maintenance operation, the disconnecting switch needs to be controlled by operating the isolation operation shaft, the grounding switch needs to be controlled by operating the grounding operation shaft, and the state needs to be locked by operating the interlocking plate; second, the structure is complex, the shapes of the parts are complex, and the number of parts is large, resulting in an increase in production and assembly costs; third, the protection is poor, and anyone can directly open the cable room door by operating the handle, so the safety cannot be ensured. SUMMARY

[0003] The present application aims to provide a 10kV environmentally friendly gas-filled cabinet high-reliability mechanism interlocking device and a use method thereof to solve the problems raised in the background.

[0004] In order to achieve the above object, the present application provides the following technical scheme: 10kV environmental protection gas-filled cabinet high reliability mechanism interlocking device, including cabinet, the cabinet is hinged with the cabinet door, the cabinet door is fixedly connected with the mounting seat, the top of the mounting seat is provided with a disconnecting switch, the bottom is provided with a grounding switch, one side of the mounting seat is provided with a second connecting plate, the other side is provided with a wedge, both ends of the wedge are fixedly connected with a third connecting plate, and the third connecting plate is fixedly connected to the second connecting plate, one side of the wedge is provided with an angle steel, and the angle steel is fixedly connected to the cabinet, the second connecting plate is fixedly connected with a connecting rod, and the connecting rod is slidingly connected to the mounting seat, the connecting rod is sleeved with a spring, the other end of the connecting rod is fixedly connected with a clamping block, one side of the spring is fixedly connected to the outer wall of the clamping block, the other end is fixedly connected to the mounting seat, the mounting seat is fixedly connected with a mechanical lock, the mechanical lock is provided with a lock tongue, the mechanical lock is sleeved with a sleeve, and the sleeve is connected to the cabinet door, a second groove is formed in the position of the lock tongue on the sleeve, one end of the sleeve is fixedly connected with a handle, the other end is fixedly connected with a first connecting plate, and the first connecting plate is arranged in the cabinet, a stop block is fixedly connected to the outer wall of one side of the first connecting plate, a fixed block is fixedly connected to the outer wall of the other side, a first trigger plate is fixedly connected to the upper surface of the fixed block, and a second trigger plate is fixedly connected to the outer wall of one side of the fixed block.

[0005] Preferably, one end of the mechanical lock is provided with a key hole.

[0006] Preferably, the angle steel is fixedly connected with a reinforcing plate, a first through hole is formed in the angle steel, a first screw is installed in the first through hole, and the first screw is threadedly connected to the cabinet.

[0007] Preferably, a second through hole and a first through slot are formed in the mounting seat, the connecting rod is slidingly connected in the second through hole, and the clamping block is slidingly connected in the first through slot.

[0008] Preferably, a third through hole is formed in the mounting seat, a second screw is installed in the third through hole, and the second screw is threadedly connected to the cabinet door.

[0009] The use method of the 10kV environmental protection gas-filled cabinet high reliability mechanism interlocking device, including the following steps: step one, assembling the device; step two, installing the device; step three, opening the door operation; step four, closing the door operation.

[0010] In the step one, the mechanical lock is first installed in the sleeve, the mechanical lock is opened, the lock tongue is inserted into the second through slot, then the mechanical lock is fixed on the mounting seat by screws, the fixed block is fixed on the first connecting plate by screws, the clamping block is installed in the first through slot, the spring is placed in the mounting seat, the connecting rod is passed through the second through hole and the spring, and is screwed on the clamping block, then the frame composed of the second connecting plate, the wedge block and the third connecting plate is sleeved on the mounting seat, and the other end of the connecting rod is fixed on the second connecting plate by screws.

[0011] In the step two, the sleeve is first installed in the mounting hole reserved on the cabinet door, then the mounting seat is fixed on the cabinet door by the second screw, the handle is screwed on the sleeve, and finally the angle steel is fixed on the cabinet body at the position corresponding to the wedge block, and the isolation switch and the grounding switch are installed on the cabinet door, and the isolation switch is arranged above the mounting seat and the grounding switch is arranged below the mounting seat.

[0012] In the step three, when the door needs to be opened for maintenance, the key is inserted into the key hole, the lock tongue is retracted by turning, then the handle is turned counterclockwise by ninety degrees, the second trigger plate triggers the grounding switch, the first trigger plate is separated from the isolation switch, the cabinet door is opened, the clamping block is inserted into the second through slot under the reset action of the spring, and the handle is kept in this state.

[0013] In the step four, when the maintenance is completed and the door is closed, the cabinet door is closed, the wedge block moves towards the mounting seat under the block of the angle steel, the clamping block is separated from the second through slot, the handle is reset, the isolation switch and the grounding switch are restored to the initial state, and finally the key is turned to make the lock tongue reinserted into the second through slot.

[0014] Preferably, in the step one, the included angle between the first trigger plate and the second trigger plate is ninety degrees.

[0015] Compared with the prior art, the present application has the following advantages: the first trigger plate and the second trigger plate are fixed on the sleeve and can rotate coaxially with the sleeve, thereby realizing synchronous operation of the isolation switch and the grounding switch, and the clamping block is used to automatically lock the state of the sleeve, so that the sleeve cannot be rotated after the door is opened, thereby avoiding the change of the switch state caused by the misoperation after the door is opened; the mechanical lock is arranged in the sleeve to lock the state of the sleeve, so that the cabinet door cannot be opened without the key, thereby improving the safety of the gas-filled cabinet; the present application has the advantages of simple structure, good reliability, easy assembly and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1It is the northwest isometric sectional structure schematic view of the present application;

[0017] Figure 2 It is Figure 1 The structure enlarged view of the middle A area;

[0018] Figure 3 It is the first trigger plate isometric structure schematic view of the present application;

[0019] Figure 4 It is the sleeve isometric structure schematic view of the present application;

[0020] Figure 5 It is the mounting seat isometric structure schematic view of the present application;

[0021] Figure 6 It is the mounting seat isometric sectional structure schematic view of the present application;

[0022] Figure 7 It is the sleeve isometric sectional structure schematic view of the present application in the closed door state;

[0023] Figure 8 It is the sleeve isometric sectional structure schematic view of the present application in the open door state;

[0024] Figure 9 It is the southeast isometric sectional structure schematic view of the present application;

[0025] Figure 10 It is the method flow chart of the present application;

[0026] In the figure: 1, cabinet door; 11, cabinet body; 12, isolating switch; 13, angle steel; 14, grounding switch; 15, first through hole; 16, first screw; 17, reinforcing plate; 2, mounting seat; 21, second through hole; 22, first through slot; 23, mechanical lock; 24, lock tongue; 25, key hole; 26, third through hole; 27, second screw; 3, sleeve; 31, handle; 32, second through slot; 33, first connecting plate; 34, first trigger plate; 35, fixed block; 36, second trigger plate; 37, stop block; 4, second connecting plate; 41, connecting rod; 42, spring; 43, clamping block; 44, wedge block; 45, third connecting plate. Embodiment

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Please refer to Figures 1-9This invention provides an embodiment of a high-reliability interlocking device for a 10kV environmentally friendly gas-filled switchgear, comprising a cabinet body 11, a cabinet door 1 hinged to the cabinet body 11, a mounting base 2 fixedly connected to the cabinet door 1, an isolating switch 12 at the top of the mounting base 2, a grounding switch 14 at the bottom, a second connecting plate 4 on one side of the mounting base 2, and a wedge 44 on the other side. A third connecting plate 45 is fixedly connected to both ends of the wedge 44, and the third connecting plate 45 is fixedly connected to the second connecting plate 4. An angle is provided on one side of the wedge 44. Steel 13, and angle steel 13 are fixedly connected to cabinet 11. A connecting rod 41 is fixedly connected to the second connecting plate 4, and the connecting rod 41 is slidably connected to the mounting base 2. A spring 42 is sleeved on the connecting rod 41. A locking block 43 is fixedly connected to the other end of the connecting rod 41. One end of the spring 42 is fixedly connected to the outer wall of one side of the locking block 43, and the other end is fixedly connected to the mounting base 2. A mechanical lock 23 is fixedly connected to the mounting base 2. A locking tongue 24 is installed on the mechanical lock 23. A sleeve 3 is sleeved on the mechanical lock 23, and the sleeve 3 is connected through to the cabinet. On door 1, a second through groove 32 is provided on sleeve 3 at the position of the latch 24. One end of sleeve 3 is fixedly connected to a handle 31, and the other end is fixedly connected to a first connecting plate 33, which is located inside cabinet 11. A stop block 37 is fixedly connected to one outer wall of the first connecting plate 33, and a fixing block 35 is fixedly connected to the other outer wall. A first trigger plate 34 is fixedly connected to the upper surface of the fixing block 35, and a second trigger plate 36 is fixedly connected to one outer wall of the fixing block 35. A key is provided at one end of the mechanical lock 23. Hole 25; A reinforcing plate 17 is fixedly connected to the angle steel 13. The angle steel 13 has a first through hole 15. A first screw 16 is installed in the first through hole 15 and is threaded to the cabinet body 11. The mounting base 2 has a second through hole 21 and a first through groove 22. The connecting rod 41 is slidably connected in the second through hole 21 and the locking block 43 is slidably connected in the first through groove 22. The mounting base 2 has a third through hole 26. A second screw 27 is installed in the third through hole 26 and is threaded to the cabinet door 1.

[0029] Please see Figure 10 The present invention provides an embodiment of a method for using a high-reliability interlocking device for a 10kV environmentally friendly gas-filled switchgear, comprising: step one, assembling the device; step two, installing the device; step three, opening the door; and step four, closing the door.

[0030] In the above step one, firstly, the mechanical lock 23 is installed in the sleeve 3, the mechanical lock 23 is opened, the lock tongue 24 is inserted into the second through slot 32, then the mechanical lock 23 is fixed on the mounting seat 2 by screws, the fixed block 35 is fixed on the first connecting plate 33 by screws, the clamping block 43 is installed in the first through slot 22, the spring 42 is placed in the mounting seat 2, the connecting rod 41 is passed through the second through hole 21 and the spring 42, and is screwed on the clamping block 43, then the frame composed of the second connecting plate 4, the wedge block 44 and the third connecting plate 45 is sleeved on the mounting seat 2, the other end of the connecting rod 41 is fixed on the second connecting plate 4 by screws; wherein the first trigger plate 34, the fixed block 35 and the second trigger plate 36 are integrated structure, the included angle between the first trigger plate 34 and the second trigger plate 36 is ninety degrees, the sleeve 3, the first connecting plate 33 and the stop block 37 are integrated structure;

[0031] In the above step two, firstly, the sleeve 3 is installed in the mounting hole reserved on the cabinet door 1, then the mounting seat 2 is fixed on the cabinet door 1 by the second screw 27, the handle 31 is screwed on the sleeve 3, finally the angle steel 13 is fixed on the cabinet body 11 at the position corresponding to the wedge block 44, the isolation switch 12 and the grounding switch 14 are installed on the cabinet door 1, and the isolation switch 12 is arranged directly above the mounting seat 2, and the grounding switch 14 is arranged directly below the mounting seat 2;

[0032] In the above step three, when the door needs to be opened for maintenance, the key is inserted into the key hole 25, the lock tongue 24 is retracted by turning, then the handle 31 is counterclockwise turned by ninety degrees, so that the second trigger plate 36 triggers the grounding switch 14, and the first trigger plate 34 is separated from the isolation switch 12, after the cabinet door 1 is opened, under the reset action of the spring 42, the clamping block 43 is inserted into the second through slot 32, so that the handle 31 remains in this state;

[0033] In the above step four, when the door is closed after the maintenance is completed, the cabinet door 1 is closed, under the block of the angle steel 13, the wedge block 44 moves to the direction of the mounting seat 2, so that the clamping block 43 is separated from the second through slot 32, then the handle 31 is reset, at the same time, the isolation switch 12 and the grounding switch 14 return to the initial state, finally the key is turned, so that the lock tongue 24 is inserted into the second through slot 32 again.

[0034] Based on the above, the advantages of the present application are that when the 10kV environmentally friendly gas-filled cabinet is maintained by opening the door, the key can be inserted into the key hole 25 on the mechanical lock 23, the lock tongue 24 is twisted and retracted, and it is separated from the second through slot 32, at this time the handle 31 can be counterclockwise rotated by ninety degrees, the sleeve 3 is rotated, the fixed block 35 on the sleeve 3 is rotated, the second trigger plate 36 triggers the grounding switch 14, the first trigger plate 34 is separated from the isolating switch 12, after the cabinet door 1 is opened, the wedge block 44 is separated from the angle steel 13, and under the reset action of the spring 42, the clamping block 43 in the first through slot 22 is inserted into the second through slot 32, so that the handle 31 remains in this state; when the door is closed after the maintenance is completed, the cabinet door 1 is closed, the wedge block 44 moves in the direction of the mounting seat 2 under the block of the angle steel 13, the second connecting plate 4 is driven by the third connecting plate 45, the second connecting plate 4 drives the connecting rod 41 to slide along the second through hole 21, the connecting rod 41 drives the clamping block 43, so that the clamping block 43 is separated from the second through slot 32, and the spring 42 is compressed, at this time the handle 31 can be reset, and the isolating switch 12 and the grounding switch 14 return to the initial state, the stop block 37 on the first connecting plate 33 is clamped in the cabinet body 11, then the key is turned, the lock tongue 24 is reinserted into the second through slot 32, and the first through hole 15 is used for installing the first screw 16, the first screw 16 is used for fixing the angle steel 13, the reinforcing plate 17 is used for improving the mechanical strength of the angle steel 13, the third through hole 26 is used for installing the second screw 27, and the second screw 27 is used for fixing the mounting seat 2.

[0035] It will be obvious to a person skilled in the art that the application is not limited to the details of the above-described exemplary embodiments but can be implemented in other embodiments without departing from the scope of the application. The embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the scope of the claims.

Claims

1. A high-reliability interlocking device for a 10kV environmentally friendly gas-insulated switchgear, comprising a cabinet (11), characterized in that: The cabinet (11) is hinged with a cabinet door (1), and a mounting base (2) is fixedly connected to the cabinet door (1). A disconnecting switch (12) is provided at the top of the mounting base (2), and a grounding switch (14) is provided at the bottom. A second connecting plate (4) is provided on one side of the mounting base (2), and a wedge (44) is provided on the other side. A third connecting plate (45) is fixedly connected to both ends of the wedge (44), and the third connecting plate (45) is fixedly connected to the second connecting plate (4). An angle steel (13) is provided on one side of the wedge (44), and the angle steel (13) is fixedly connected to the cabinet (11). A connecting rod (41) is fixedly connected to the second connecting plate (4), and the connecting rod (41) is slidably connected to the mounting base (2). A spring (42) is sleeved on the connecting rod (41), and a locking block (43) is fixedly connected to the other end of the connecting rod (41), and one end of the spring (42) is fixedly connected to the locking block (43). On one side of the outer wall of the block (43), the other end is fixedly connected to the mounting base (2). A mechanical lock (23) is fixedly connected to the mounting base (2). A lock tongue (24) is installed on the mechanical lock (23). A sleeve (3) is sleeved on the mechanical lock (23). The sleeve (3) is connected to the cabinet door (1). A second through groove (32) is opened on the sleeve (3) at the position of the lock tongue (24). A handle (31) is fixedly connected to one end of the sleeve (3). A first connecting plate (33) is fixedly connected to the other end. The first connecting plate (33) is set inside the cabinet (11). A stop block (37) is fixedly connected to one side of the outer wall of the first connecting plate (33). A fixing block (35) is fixedly connected to the other side of the outer wall. A first trigger plate (34) is fixedly connected to the upper surface of the fixing block (35). A second trigger plate (36) is fixedly connected to one side of the outer wall of the fixing block (35).

2. The high-reliability interlocking device for the 10kV environmentally friendly gas-filled switchgear according to claim 1, characterized in that: One end of the mechanical lock (23) is provided with a keyhole (25).

3. The high-reliability interlocking device for the 10kV environmentally friendly gas-filled switchgear according to claim 1, characterized in that: A reinforcing plate (17) is fixedly connected to the angle steel (13). A first through hole (15) is opened on the angle steel (13). A first screw (16) is installed in the first through hole (15), and the first screw (16) is threadedly connected to the cabinet (11).

4. The high-reliability interlocking device for the 10kV environmentally friendly gas-filled switchgear according to claim 1, characterized in that: The mounting base (2) has a second through hole (21) and a first through groove (22), and the connecting rod (41) is slidably connected in the second through hole (21), and the locking block (43) is slidably connected in the first through groove (22).

5. The high-reliability interlocking device for the 10kV environmentally friendly gas-filled switchgear according to claim 4, characterized in that: The mounting base (2) has a third through hole (26), and a second screw (27) is installed in the third through hole (26), and the second screw (27) is threaded onto the cabinet door (1). The method for using the high-reliability interlocking device of the 6.10kV environmentally friendly gas-insulated switchgear includes step one, assembling the device; step two, installing the device; step three, opening the door; and step four, closing the door. Its features are: In step one above, the mechanical lock (23) is first installed into the sleeve (3), the mechanical lock (23) is opened, and the latch (24) is inserted into the second through slot (32). Then, the mechanical lock (23) is fixed to the mounting base (2) with screws. The fixing block (35) is then fixed to the first connecting plate (33) with screws. The locking block (43) is installed into the first through slot (22), the spring (42) is placed in the mounting base (2), and the connecting rod (41) is passed through the second through hole (21). The spring (42) is screwed onto the locking block (43) by threads, and the frame consisting of the second connecting plate (4), the wedge (44) and the third connecting plate (45) is fitted onto the mounting base (2). The other end of the connecting rod (41) is fixed onto the second connecting plate (4) by screws. The first trigger plate (34), the fixing block (35) and the second trigger plate (36) are integrated structures, and the sleeve (3), the first connecting plate (33) and the stop block (37) are integrated structures. In step two above, firstly, the sleeve (3) is installed in the reserved mounting hole on the cabinet door (1), then the mounting base (2) is fixed on the cabinet door (1) by the second screw (27), then the handle (31) is tightened on the sleeve (3) by the thread, and finally the angle steel (13) is fixed on the cabinet body (11) at the position corresponding to the wedge (44), the isolating switch (12) and the grounding switch (14) are installed on the cabinet door (1), and the isolating switch (12) is set directly above the mounting base (2), and the grounding switch (14) is set directly below the mounting base (2); In step three above, when it is necessary to open the door for maintenance, the key can be inserted into the keyhole (25), and the lock tongue (24) can be turned to retract. At this time, the handle (31) can be turned counterclockwise by 90 degrees, so that the second trigger plate (36) triggers the grounding switch (14), the first trigger plate (34) disengages from the isolating switch (12), and after the cabinet door (1) is opened, under the reset action of the spring (42), the locking block (43) is inserted into the second through slot (32), so that the handle (31) remains in this state. In step four above, when closing the door after maintenance, the cabinet door (1) can be closed. Under the obstruction of the angle steel (13), the wedge (44) moves towards the mounting base (2), so that the locking block (43) disengages from the second through slot (32). At this time, the handle (31) can be reset, and the isolating switch (12) and grounding switch (14) can be restored to their initial state. Finally, turn the key to make the locking tongue (24) re-insert into the second through slot (32).

7. The method of using the high-reliability interlocking device for the 10kV environmentally friendly gas-insulated switchgear according to claim 6, characterized in that: In step one, the included angle between the first trigger plate (34) and the second trigger plate (36) is ninety degrees.

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