CN206301706U - Interlocking devices for disconnectors and earthing switches for high-voltage circuit-breaker cabinets - Google Patents

Abstract

The utility model discloses a kind of disconnecting switch for high-voltage circuit breaker cabinet and the interlock of earthed switch, including interlocking outer baffle, interlock slide plate, barrier assembly and grounding assembly, the barrier assembly includes isolated operation axle, isolation interlock bracket, isolation conjunction point instruction, isolation baffle plate and a spacer bar；The grounding assembly is included and is grounded operating shaft, ground connection interlock bracket, ground connection conjunction point instruction, lower gate interlock hook and earth brace；By such scheme, make high-voltage circuit breaker cabinet in "on" position, when power failure operation is operated, energization Job Operations when three states there is different interlocks respectively.

Description

Interlocking devices for disconnectors and earthing switches for high-voltage circuit-breaker cabinets

technical field

The utility model relates to the technical field of an interlocking device for a high-voltage circuit breaker cabinet, in particular to an interlocking device for an isolating switch and a grounding switch of a high-voltage circuit breaker cabinet.

Background technique

High-voltage switchgear should have extremely high safety and prevent misoperation functions, so as to avoid casualties and losses of personnel and materials. Therefore, the switchgear should have a complete anti-mistake mechanical interlock device: that is, it can prevent mis-opening and mis-closing circuit breakers. , prevent the disconnect switch (or isolating plug) with load, prevent power transmission with ground (or ground wire), prevent live connection and ground (or connect ground wire), prevent mistakenly entering the charged interval and other "five prevention" functions, so as to be effective To prevent the occurrence of electrical misuse accidents. However, the traditional high-voltage circuit breaker cabinet does not have the interlock function of the disconnector and the grounding switch, and there are problems such as complicated processing and inconvenient operation. Therefore, a simple, safe and reliable disconnector for high-voltage circuit breaker cabinets is required and the interlocking device of the earthing switch.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide an interlocking device for a disconnector and a grounding switch of a high-voltage circuit breaker cabinet.

In order to achieve the above-mentioned purpose, the interlocking device for the isolating switch and the grounding switch of the high-voltage circuit breaker cabinet provided by the utility model includes an interlocking outer baffle plate, an interlocking slide plate, an isolating component and a grounding component, and the isolating The assembly includes an isolation operation shaft, an isolation interlock bracket, an isolation closing and opening indicator, an isolation baffle and an isolation rod; the isolation rod is matched with the isolation interlock bracket, wherein the isolation rod moves vertically and The top of the isolating rod matches the isolating bump formed on the isolating operation shaft; the isolating operating shaft is driven and matched with the isolating switch, and the rotating isolating operating shaft is used to operate the closing and opening of the isolating switch, wherein the coupling There is an isolation operation hole aligned with the isolation operation shaft on the outer baffle of the lock; the bottom end of the isolation baffle is drivingly connected with the circuit breaker and the isolation baffle is hinged with the isolation interlock bracket, wherein, when the circuit breaker is closed In the state, the isolation baffle blocks the isolation operation shaft; the grounding component includes a grounding operation shaft, a grounding interlock bracket, a grounding closing and opening indicator, a lower door interlocking hook and a grounding rod; the grounding rod is matched with the grounding interlocking bracket connection, wherein the grounding rod moves in the vertical direction and the top end of the grounding rod matches the grounding bump formed on the grounding operation shaft; Operate the closing and opening of the grounding switch, wherein a grounding operation hole aligned with the grounding operation shaft is opened on the interlocking outer baffle; the bottom end of the grounding rod is connected to the lower door interlocking hook, wherein, The lower door interlocking hook is matched with the lower door of the circuit breaker cabinet; the isolation on-off indication and the grounding on-off indication are both arranged on the outer side of the interlock outer baffle, wherein the isolation on-off indication is provided with The connecting rods sequentially penetrate the interlocking outer baffle and the aligned vertical isolation long holes on the isolation interlocking bracket and are connected with the isolation rods; The aligned vertically long holes on the plate and the grounding interlocking bracket are connected with the grounding rod; When the interlocking slide plate slides toward the side of the isolation operation hole, the interlock slide plate blocks the upper part of the isolation operation hole and the vertical isolation elongated hole; when the interlock slide plate moves toward the side of the grounding operation hole, the interlocking slide plate blocks the grounding operation hole and the lower part of the vertical strip hole, and secondly, when the interlock inner lock plate moves to the center position between the isolation operation hole and the ground operation hole, the isolation operation hole and the ground operation hole are partially blocked by the interlock slide plate.

Further, a slider is formed on the interlocking sliding plate to slide and cooperate with the flanging protrusion formed on the interlocking outer baffle, wherein, the sliding block and the flanging protrusion are respectively provided with three aligned holes. positioning holes.

Further, both the isolation bump and the ground bump are arc-shaped bumps.

The utility model adopts the above-mentioned scheme, and its beneficial effect is that the interlock function between the disconnector and the grounding switch is realized by providing an interlocking device, wherein, the disconnector and the grounding switch are connected under the power supply device of the circuit breaker cabinet None of the switches can be operated; when performing power outage operations, the circuit breaker needs to be opened first, and then the isolation operation and grounding operation can be performed in sequence, and then the lower door of the circuit breaker cabinet can be opened; Only when the lower door of the cabinet is closed can the grounding operation and isolation operation be carried out in sequence, and then the circuit breaker can be closed.

Description of drawings

Fig. 1 is a schematic structural diagram of a high-voltage circuit breaker cabinet of the present invention.

Fig. 2 is a front view of the high voltage circuit breaker cabinet of the present invention.

Fig. 3 is a structural schematic diagram of the non-interlocking outer baffle in the interlocking device of the present invention.

Fig. 4 is a schematic diagram of the internal structure of the interlocking device of the present invention.

Fig. 5 is an exploded view of the interlocking device of the present invention.

Among them, 1-interlock outer baffle, 11-isolation operation hole, 12-grounding operation hole, 13-vertical isolation long hole, 14-vertical isolation long hole, 15-flange bump, 2-connection Lock slide plate, 21-slider, 3-isolation component, 31-isolation operation shaft, 32-isolation interlock bracket, 33-isolation closing and opening indication, 34-isolation baffle, 35-isolation rod, 4-grounding assembly, 41 - grounding operation shaft, 42 - grounding interlock bracket, 43 - grounding closing and opening indication, 44 - lower door interlocking hook, 45 - grounding rod.

detailed description

Below in conjunction with specific embodiment the utility model is further described.

Referring to accompanying drawings 1 to 5, in this embodiment, the interlocking device for the isolating switch and the grounding switch of the high-voltage circuit breaker cabinet includes an interlocking outer baffle 1, an interlocking slide 2, and an isolating assembly 3 and ground assembly 4.

In this embodiment, the isolation assembly 3 includes an isolation operation shaft 31, an isolation interlock bracket 32, an isolation closing and opening indicator 33, an isolation baffle 34, and an isolation rod 35; the isolation rod 35 is matched with the isolation interlock bracket 32, Wherein, the isolating rod 35 moves vertically and the top of the isolating rod 35 cooperates with the isolating bump formed on the isolating operation shaft 31; Closing and opening of the isolating switch, wherein, the interlocking outer baffle 1 has an isolating operation hole 11 aligned with the isolating operation shaft 31; Connect and the isolation baffle 34 is hinged with the isolation interlock bracket 32. When the circuit breaker is closing or opening, the isolation baffle 34 is driven by the transmission rod to isolate the baffle 34 at the hinge point of the isolation interlock bracket 32. Rotation is realized for the fulcrum of rotation, wherein the isolation baffle 34 blocks the isolation operation shaft 31 when the circuit breaker is in the closed state;

In this embodiment, the grounding assembly 4 includes a grounding operation shaft 41, a grounding interlocking bracket 42, a grounding closing and opening indicator 43, a lower door interlocking hook 44, and a grounding rod 45; the grounding rod 45 is matched with the grounding interlocking bracket 42 connection, wherein the grounding rod 45 moves in the vertical direction and the top of the grounding rod 45 matches with the grounding bump formed on the grounding operation shaft 41; To operate the closing and opening of the grounding switch, the interlocking outer baffle plate 1 has a grounding operation hole 12 aligned with the grounding operation shaft 41; the bottom end of the grounding rod 45 is connected to the lower door interlocking hook 44, wherein, The lower door interlocking hook 44 is matched with the lower door of the circuit breaker cabinet. In this embodiment, both the isolation bump and the ground bump are arc-shaped bumps.

In this embodiment, the isolation closing and closing indicator 33 and the grounding closing and closing indicator 43 are both arranged on the outer side of the interlocking outer baffle 1; The vertically spaced long holes 13 that are aligned on the interlock bracket 32 are also connected with the spacer bar 35; when the isolation operating shaft 31 is rotated to avoid the spacer bar 35 tops, the spacer bar 35 moves upwards and Its top is in contact with the isolation operation shaft 31, and then drives the connecting rod and the isolation closing and opening indicator 33 to move upwards along the vertical isolation slot 13, that is, the isolation closing and opening indicator 33 presents the closing state of the isolation switch; when the isolation operating shaft is rotated 31 make the isolation protrusion contact and cooperate with the top of the isolation rod 35, then the isolation rod 35 moves downward, and then drives the connecting rod and the isolation closing and opening indicator 33 to move downward along the vertical isolation strip hole 13, that is, the isolation closing and opening indication 33 The isolating switch is in the OFF state. The grounding closing and opening indicator 43 is provided with a connecting rod that runs through the interlocking outer baffle plate 1 and the grounding interlocking bracket in turn, and is connected with the grounding rod 45; when the grounding operation shaft 41 is rotated, Make the grounding bump avoid the top of the grounding rod 45, then the grounding rod 45 moves upwards and its top is in contact with the grounding operation shaft 41, and then drives the connecting rod and the grounding closing and opening indicator 43 to move upwards along the vertical long hole, that is, grounding The closing and opening indication 43 presents the closing state of the grounding switch; when the grounding operation shaft 41 is rotated to make the grounding boss contact and cooperate with the top of the grounding rod 45, the grounding rod 45 moves downward, and then drives the connecting rod and the grounding closing and opening indication 43 along the vertical direction. Directly, the elongated hole 14 moves downward, that is, the grounding closing and opening indication 43 presents the grounding switch opening.

In this embodiment, the interlocking slide plate 2 is slidably matched with the inner surface of the interlocking outer baffle plate 1 along the horizontal direction; when the interlocking slide plate 2 slides toward the side of the isolation operation hole 11, the interlock slide plate 2 blocks the isolation operation hole 11 and the upper part of the vertical isolating slot 13, that is, when the isolating switch is in the closed state, the isolating on-off indication 33 is located on the upper part of the vertical isolating elongated hole 13, and the connecting rod of the isolating on-off indication 33 will block the sliding of the interlocking slide plate 2 ; When the interlocking slide plate 2 moves toward the grounding operation hole 12, the interlocking sliding plate 2 blocks the grounding operation hole 12 and the lower part of the vertically long strip hole 14, that is, when the grounding switch is in the opening state, the grounding closing and opening indication 43 is located Vertically at the lower part of the long hole 14, the connecting rod of the grounding close-off indicator 43 will block the sliding of the interlocking slide plate 2; , the isolation operation hole 11 and the ground operation hole 12 are both blocked by the interlocking slide plate 2 . The interlocking sliding plate 2 is formed with a slide block 21 that slides and fits with the flanging projection 15 formed on the interlocking outer baffle plate 1, wherein, the slide block 21 and the flanging projection 15 are all provided with three sides aligned with each other. Three positioning holes, three positioning holes along the direction from isolation operation hole 11 to grounding operation hole 12 correspond to the three positions of interlocking slide plate 2 at the position of shielding isolation operation hole 11, the center position, and the position of shielding grounding operation hole 12. The padlock is matched with the positioning hole, so as to avoid mis-connection or mis-disconnection of the disconnector and the grounding switch.

The interlocking device in this embodiment will be further described in combination with the specific working state of the circuit breaker cabinet.

When the circuit breaker is in the energized state, both the circuit breaker and the isolating switch are in the closing state, the isolating baffle 34 blocks the isolating operation hole 11, and the isolating operation shaft 31 cannot be operated, and the isolating closing and opening indicator 33 shows the closing state of the isolating switch , the interlocking slide plate 2 cannot move towards the isolation operation hole 11 when it is blocked by the isolation closing and opening indication 33, that is, the interlocking slide plate 2 partially blocks the grounding operation hole 12, and cannot operate the grounding operation shaft 41, so that the The isolating switch and the earthing switch cannot be operated.

When performing power failure operations, after the circuit breaker is opened, the isolation baffle plate 34 does not block the isolation operation hole 11, and the isolation operation shaft 31 is rotated to make the isolation switch perform an opening operation, and the isolation closing and opening indication 33 does not block the interlocking slide plate 2 Move to the isolation operation direction, and then move the interlocking slide plate 2 to the isolation operation hole 11, so that the interlock slide plate 2 does not block the grounding operation hole 12, rotate the grounding operation shaft 41 to make the grounding switch close, and the grounding rod 45 drives upward The lower door interlocking hook 44 makes the lower door of the circuit breaker cabinet openable for operation, thereby completing the power failure operation. At the same time, in order to prevent the disconnecting switch and the grounding switch from being mis-closed or mis-divided, the interlocking slide plate 2 can be slid to the center position and a padlock can be installed, so that the isolation operation hole 11 and the grounding operation hole 12 are partially blocked by the interlocking slide plate 2, thereby Operation cannot be performed.

When carrying out power-on operation, after the lower door of the circuit breaker cabinet is completely closed, move the interlocking slide plate 2 toward the isolation operation hole 11, rotate the grounding operation shaft 41 to make the grounding switch open, and the grounding closing and opening indication 43 Moving upward does not prevent the interlocking slide plate 2 from moving toward the grounding operation hole 12, so that the interlocking slide plate 2 does not block the isolation operation hole 11, and then rotate the isolation operation shaft 31 to close the isolation switch, and then close the circuit breaker , and then the isolation baffle plate 34 blocks the isolation operation hole 11, so that the isolation switch and the grounding switch cannot be operated, and then the power-on operation is completed. At the same time, in order to prevent the disconnecting switch and the grounding switch from being mis-closed or mis-divided, the interlocking slide plate 2 can be slid to the center position and a padlock can be installed, so that the isolation operation hole 11 and the grounding operation hole 12 are partially blocked by the interlocking slide plate 2, thereby Operation cannot be performed.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Any person familiar with the art, without departing from the scope of the technical solution of the utility model, uses the technical content disclosed above to make more possible changes and modifications to the technical solution of the utility model, or the modification is equivalent to the utility model Example. Therefore, all equivalent and equivalent changes made according to the idea of the utility model that do not deviate from the technical solution of the utility model shall be covered within the protection scope of the utility model.

Claims (3)

1. The interlocking device for the isolating switch and the grounding switch of the high-voltage circuit breaker cabinet, including the interlocking outer baffle (1), the interlocking slide (2), the isolating component (3) and the grounding component (4). It is characterized in that: the isolation assembly (3) includes an isolation operation shaft (31), an isolation interlock bracket (32), an isolation closing and opening indicator (33), an isolation baffle (34) and an isolation rod (35); The isolation rod (35) is mated with the isolation interlock bracket (32), wherein the isolation rod (35) moves in the vertical direction and the top of the isolation rod (35) is formed on the isolation operation shaft (31). The isolating bumps are matched; the isolating operation shaft (31) is driven and matched with the isolating switch, and the rotating isolating operating shaft (31) is used to operate the closing and opening of the isolating switch, wherein the interlocking outer baffle ( 1) There is an isolation operation hole (11) aligned with the isolation operation shaft (31); the bottom end of the isolation baffle (34) is connected to the circuit breaker in transmission and the isolation baffle (34) is connected to the isolation interlock bracket (32) are hinged, wherein the isolation baffle (34) shields the isolation operation shaft (31) when the circuit breaker is in the closed state; the grounding assembly (4) includes a grounding operation shaft (41), a grounding interlock bracket ( 42), grounding closing and opening indication (43), lower door interlocking hook (44) and grounding rod (45); the grounding rod (45) is connected with the grounding interlocking bracket (42), wherein the grounding The rod (45) moves in the vertical direction and the top of the grounding rod (45) matches the grounding bump formed on the grounding operation shaft (41); the grounding operation shaft (41) is driven and rotated with the grounding switch The grounding operation shaft (41) is used to operate the closing and opening of the grounding switch, wherein the interlocking outer baffle (1) has a grounding operation hole (12) aligned with the grounding operation shaft (41); The bottom end of the grounding rod (45) is connected to the lower door interlock hook (44), wherein the lower door interlock hook (44) is matched with the lower door of the circuit breaker cabinet; the isolation closing and opening indicator (33 ) and the grounding closing and opening indicator (43) are both arranged on the outer side of the interlocking outer baffle (1), wherein the isolation closing and opening indicator (33) is provided with connecting rods which sequentially penetrate the interlocking outer baffle (1) It is aligned with the vertical isolating elongated hole (13) opened on the isolating interlocking bracket (32) and is connected with the isolating rod (35); The vertically aligned long slit holes (14) on the lock outer baffle (1) and the grounding interlocking bracket (42) are connected with the grounding rod (45); the interlocking slide plate (2) and The inner surface of the interlocking outer baffle (1) is slidably fitted along the horizontal direction, wherein, when the interlocking sliding plate (2) slides toward the side of the isolation operation hole (11), the interlocking sliding plate (2) blocks the isolation operation hole (11) and vertically isolate the upper part of the long hole (13); when the interlocking slide plate (2) moves toward the side of the grounding operation hole (12), the interlocking slide plate (2) blocks the grounding operation hole (12) and the vertical directly the lower part of the elongated hole (14), and next, When the interlock inner lock plate moves to the center position between the isolation operation hole (11) and the ground operation hole (12), both the isolation operation hole (11) and the ground operation hole (12) are partially locked by the interlock slide plate (2) block. 2. The interlocking device for the isolating switch and the grounding switch of the high-voltage circuit breaker cabinet according to claim 1, characterized in that: the interlocking sliding plate (2) is formed with an interlocking outer baffle (1) A slider (21) that is slidably matched with the flanging protrusion (15) formed on the top, wherein the slider (21) and the flanging protrusion (15) are both provided with three alignment holes. 3. The interlocking device for the isolating switch and the grounding switch of the high-voltage circuit breaker cabinet according to claim 1, wherein the isolating protrusion and the grounding protrusion are both arc-shaped protrusions.