CN214012778U - Interlocking system of electrical cabinet - Google Patents

Abstract

The utility model provides an interlocking system of regulator cubicle, including compartment door plant, earthing switch operating axis, baffle, isolator operating axis, first interlocking plate is connected with the interlocking lever, and first interlocking plate is connected with first spring, is equipped with first cam on the earthing switch operating axis, and the baffle is connected in the pivot, and the pivot links with earthing switch operating axis and with the isolator operating axis; the operating shaft of the grounding switch is operated to enable the rotating shaft to rotate in a linkage manner so that the baffle shields or avoids the operating shaft of the isolating switch; the operating shaft of the disconnecting switch is operated to enable the rotating shaft to rotate in a linkage manner so that the baffle shields or avoids the operating shaft of the grounding switch; the first cam presses or avoids the first interlocking plate or the interlocking rod along with the rotation of the earthing switch operating shaft, and the current position of the compartment door panel is locked or unlocked by combining the bayonet on the interlocking rod and the clamping position on the compartment door panel. The utility model discloses simple structure, barrier propterty is good.

Description

Interlocking system of electrical cabinet

Technical Field

The utility model relates to a regulator cubicle technical field especially relates to an interlock of regulator cubicle.

Background

Five-prevention interlocking is required to be realized for the electrical cabinet, and five prevention comprises the steps of preventing an on-load brake-off or switch-on isolating switch, preventing a mistaken switch-on/off circuit breaker, preventing a mistaken switch-on when an earthing switch is closed, preventing a mistaken switch-on when the earthing switch is electrified, and preventing the mistaken switch-on/off circuit breaker from entering an electrified chamber. The interlocking system of the existing electrical cabinet realizes interlocking operation through a complex structure and needs to be improved.

SUMMERY OF THE UTILITY MODEL

In view of this, in order to solve one of the technical problems in the related art to a certain extent, it is necessary to provide an interlock system of an electrical cabinet, which has a simple structure and good protection performance.

The utility model provides an interlocking system of regulator cubicle, including compartment door plant, earthing switch operating axis, baffle, isolator operating axis, first interlocking plate is connected with the interlocking lever, first interlocking plate is connected with first spring, and initially, first spring makes first interlocking plate pretension and makes first interlocking plate shelter from earthing switch operating axis, be equipped with first cam on the earthing switch operating axis, the baffle is connected in the pivot, the pivot with earthing switch operating axis and with the linkage of isolator operating axis; the grounding switch operating shaft is operated to enable the rotating shaft to rotate in a linkage manner so that the baffle plate shields or avoids the isolating switch operating shaft; the isolating switch operating shaft is operated to enable the rotating shaft to rotate in a linkage mode so that the baffle plate can shield or avoid the grounding switch operating shaft; the first cam presses or avoids the first interlocking plate or the interlocking rod along with the rotation of the earthing switch operating shaft, and the current position of the compartment door panel is locked or unlocked by combining a bayonet on the interlocking rod and a clamping position on the compartment door panel.

Furthermore, interlock system still includes circuit breaker closing actuator, circuit breaker separating brake actuator, second interlock board and main shaft, circuit breaker closing actuator with circuit breaker separating brake actuator with the main shaft linkage, be equipped with the second cam on the main shaft, the operation circuit breaker closing actuator makes the main shaft linkage makes the second cam pushes down the second interlock board is in order to pass through the second interlock board shelters from the isolator operating axis, the operation circuit breaker separating brake actuator makes the main shaft linkage, makes the second cam with the second interlock board breaks away from, the second interlock board will under the effect of second spring the isolator operating axis exposes.

Furthermore, a third interlocking plate is arranged between the circuit breaker closing actuator and the isolating switch operating shaft, when the isolating switch operating shaft is operated and is in a switching-off state, the third interlocking plate is driven to enable the circuit breaker closing actuator to be locked and cannot be closed, and when the isolating switch operating shaft is in a switching-on state, the third interlocking plate is separated from the circuit breaker closing actuator to enable the circuit breaker closing actuator to perform a closing operation.

Furthermore, a third cam is arranged on the isolating switch operating shaft, when the isolating switch operating shaft is operated and is in a switching-off state, the third cam enables the third interlocking plate to move upwards to lock the circuit breaker switching-on actuator so as not to execute the switching-on operation, and when the isolating switch operating shaft is in a switching-on state, the third interlocking plate is separated from the circuit breaker switching-on actuator due to the downward self gravity.

It is visible through above scheme, the utility model provides an interlock system of regulator cubicle utilizes nimble design combination, solves the complicated and important interlocking relation that just, the overall arrangement is ingenious between earthing switch and door plant, isolator and earthing switch, isolator and circuit breaker switch, and simple structure, barrier propterty is good, realizes interlocking effect through pure mechanical system, greatly reduced the probability that the maloperation takes place, increase equipment life, for operating personnel provides reliable personal safety guarantee.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. It is to be understood that the drawings are designed solely for the purposes of illustration and description and not as a definition of the limits of the invention. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; either mechanically or electrically, and may be internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

It should be further noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1, the utility model provides an interlock system of regulator cubicle, including compartment door plant 10, earthing switch operating axis 11, baffle 12, isolator operating axis 13, first interlocking plate 14 is connected with interlocking rod 15, be equipped with bayonet 151 on the interlocking rod 15, first interlocking plate 14 is connected with first spring 16, first spring 16 cover is in on the interlocking rod 15, be equipped with on the compartment door plant 10 with the screens that bayonet 151 corresponds.

Initially, the earthing switch operating shaft 11 is in an earthing switch-on position, the baffle 12 shields the disconnecting switch operating shaft 13, the first interlocking plate 14 and the interlocking rod 1 are jacked up under a natural state of the first spring 16, the earthing switch operating shaft 11 is shielded by the first interlocking plate 14, and an earthing switch switching-off operation cannot be performed; the blocking position on the compartment door panel 10 is aligned with the bayonet 151 on the interlocking rod 15, the first spring 16 is compressed under the action of the gravity of the compartment door panel 10 and overcomes the elastic force of the first spring 16, the first interlocking plate 14 and the interlocking rod 15 synchronously move downwards, the baffle plate 12 releases the shielding of the earthing switch operating shaft 11, so that the earthing switch can be opened, the compartment door panel 10 is lifted up and taken out, and the locking is recovered under the action of the first spring 16.

The earthing switch operating shaft 11 is provided with a first cam 111, the baffle 12 is connected to the rotating shaft 17, and the rotating shaft 17 is linked with the earthing switch operating shaft 11 and the isolating switch operating shaft 13.

The grounding switch operating shaft 11 is operated to a switching-on position, so that the rotating shaft 17 and the baffle 12 can be linked and rotate anticlockwise to shield the isolating switch operating shaft 13, and the isolating switch cannot be switched on or off; the earthing switch operating shaft 11 is operated to the opening position, the baffle 12 is moved away from the disconnecting switch operating shaft 13 (shown in the figure position), the shielding of the disconnecting switch operating shaft 11 is removed, and the disconnecting switch can be switched on and off. And, the first cam 111 rotates to the position shown in the figure, presses the first interlocking plate 14, the interlocking rod 15 is locked at the position shown in the figure, the clamping position of the compartment door panel 10 is clamped in the clamping opening 151 of the interlocking rod 15, the compartment door panel 10 cannot be lifted up and opened, the interlocking of the grounding switch and the door panel is realized, and the interlocking requirement of preventing the mistaken entering of the electrified interval is met.

The disconnecting switch operating shaft 13 is operated to enable the disconnecting switch to be in a switching-on position, the rotating shaft 17 and the baffle 12 are linked to rotate clockwise, the grounding switch operating shaft 11 is shielded by the baffle 12, the grounding switch cannot be switched on and off, and the interlocking function of the disconnecting switch and the grounding switch is realized through the linkage relation of the disconnecting switch operating shaft 11, the baffle 12 and the grounding switch, so that the interlocking requirement of preventing power transmission with a ground wire (or a switching-on position of the grounding switch) is met.

The interlocking system further comprises a breaker closing actuator 18, a breaker opening actuator 19, a second interlocking plate 20 and a main shaft 21, wherein the breaker closing actuator 18 and the breaker opening actuator 19 are linked with the main shaft 21, a second cam 211 is arranged on the main shaft 21, the breaker closing actuator 18 is operated to enable the main shaft 21 to be linked, the second cam 211 presses the second interlocking plate 20, the pulling force of a second spring 22 is overcome, the second interlocking plate 20 slides downwards, so that the second interlocking plate 20 shields the isolating switch operating shaft 13, the isolating switch cannot be opened, and the interlocking requirement of preventing the isolating switch with load from being closed and opened is met; the circuit breaker opening actuator 19 is operated to cause the main shaft 21 to be interlocked, the second cam 211 is disengaged from the second interlock plate 20, and the second interlock plate 20 exposes the disconnecting switch operating shaft 13 under the action of the second spring 22.

A third interlocking plate 23 is further arranged between the circuit breaker closing actuator 18 and the isolating switch operating shaft 13 (the third interlocking plate 23 is located on the rear side of the second interlocking plate 20), when the isolating switch operating shaft 13 is operated to enable the isolating switch to be in an opening state, the third interlocking plate 23 is driven to enable the circuit breaker closing actuator 18 to be locked, the circuit breaker cannot be closed, and the interlocking requirement of preventing the circuit breaker from being opened and closed by mistake and preventing power transmission with a ground wire (or a grounding switch from being closed) is met; the disconnecting switch operating shaft 13 is operated to make the disconnecting switch in a closing state, and the third interlocking plate 23 is separated from the circuit breaker closing actuator 18 to make the circuit breaker closing actuator 18 execute a closing operation. Specifically, a third cam (not shown) is arranged on the disconnecting switch operating shaft 13, when the disconnecting switch operating shaft 13 is operated, the disconnecting switch is in a switching-off state, the third cam jacks up the third interlocking plate 23, so that the third interlocking plate 23 moves upwards to lock the circuit breaker switching-on actuator 18, when the disconnecting switch operating shaft 13 is operated, the disconnecting switch is in a switching-on state, and the third interlocking plate 23 moves downwards due to self gravity to release the locking of the circuit breaker switching-on actuator 18.

The utility model provides an interlock system of regulator cubicle utilizes nimble design combination, solves complicacy and important interlocking relation between earthing switch and door plant, isolator and earthing switch, isolator and circuit breaker, and the overall arrangement is ingenious, and simple structure, barrier propterty is good, realizes interlocking effect through pure mechanical system, greatly reduced the probability that the maloperation takes place, increases equipment life, provides reliable personal safety guarantee for operating personnel.

Throughout the description and claims of this application, the words "comprise/comprises" and the words "have/includes" and variations of these are used to specify the presence of stated features, values, steps or components but do not preclude the presence or addition of one or more other features, values, steps, components or groups thereof.

Some features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, certain features of the invention, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable combination in different embodiments.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the present invention.

Claims (4)

1. An interlocking system of an electrical cabinet is characterized by comprising a compartment door plate, an earthing switch operating shaft, a baffle, an isolating switch operating shaft and a first interlocking plate, wherein the first interlocking plate is connected with an interlocking rod, the first interlocking plate is connected with a first spring, initially, the first spring enables the first interlocking plate to be pre-tightened to enable the first interlocking plate to shield the earthing switch operating shaft, a first cam is arranged on the earthing switch operating shaft, the baffle is connected on a rotating shaft, and the rotating shaft is linked with the earthing switch operating shaft and the isolating switch operating shaft; the grounding switch operating shaft is operated to enable the rotating shaft to rotate in a linkage manner so that the baffle plate shields or avoids the isolating switch operating shaft; the isolating switch operating shaft is operated to enable the rotating shaft to rotate in a linkage mode so that the baffle plate can shield or avoid the grounding switch operating shaft; the first cam presses or avoids the first interlocking plate or the interlocking rod along with the rotation of the earthing switch operating shaft, and the current position of the compartment door panel is locked or unlocked by combining a bayonet on the interlocking rod and a clamping position on the compartment door panel.

2. The interlocking system of an electrical cabinet according to claim 1, further comprising a circuit breaker closing actuator, a circuit breaker opening actuator, a second interlocking plate and a main shaft, wherein the circuit breaker closing actuator and the circuit breaker opening actuator are linked with the main shaft, the main shaft is provided with a second cam, the circuit breaker closing actuator is operated to link the main shaft, the second cam presses the second interlocking plate to shield the isolating switch operating shaft through the second interlocking plate, the circuit breaker opening actuator is operated to link the main shaft, the second cam is separated from the second interlocking plate, and the second interlocking plate exposes the isolating switch operating shaft under the action of a second spring.

3. The interlock system of an electrical cabinet according to claim 2, wherein a third interlock plate is further disposed between the circuit breaker closing actuator and the isolating switch operating shaft, when the isolating switch operating shaft is operated to be in an open state, the third interlock plate is driven to lock the circuit breaker closing actuator and prevent the circuit breaker closing actuator from closing, and when the isolating switch operating shaft is in a closed state, the third interlock plate is disengaged from the circuit breaker closing actuator to enable the circuit breaker closing actuator to perform a closing operation.

4. The interlock system of an electrical cabinet according to claim 3, wherein a third cam is disposed on the disconnecting switch operating shaft, when the disconnecting switch operating shaft is operated to be in an open state, the third cam moves the third interlocking plate upward to lock the circuit breaker closing actuator and disable a closing operation, and when the disconnecting switch operating shaft is in a closing state, the third interlocking plate moves downward due to its own weight to be disengaged from the circuit breaker closing actuator.

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