CN211742974U - Reverse interlocking mechanism of isolating switch and circuit breaker - Google Patents
Reverse interlocking mechanism of isolating switch and circuit breaker Download PDFInfo
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- CN211742974U CN211742974U CN202020665403.9U CN202020665403U CN211742974U CN 211742974 U CN211742974 U CN 211742974U CN 202020665403 U CN202020665403 U CN 202020665403U CN 211742974 U CN211742974 U CN 211742974U
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Abstract
The utility model discloses a reverse interlocking mechanism of an isolating switch and a circuit breaker, which comprises a circuit breaker and an isolating switch which are arranged and connected from top to bottom, and also comprises a clamping groove, a first connecting rod, a first connecting lever pressing plate, a second connecting lever pressing plate and a second connecting rod; the draw-in groove corresponds establishes in the combined floodgate button department of circuit breaker, and first connecting rod is established on the circuit breaker, and first connecting rod is connected with first connecting lever clamp plate, first connecting lever clamp plate position is established in the outside of isolator's isolation main shaft correspondingly, and second connecting lever clamp plate is connected and is established in the below of first connecting lever clamp plate, and second connecting lever clamp plate is connected with isolator's isolation main shaft, and second connecting lever clamp plate and second connecting rod swing joint, second connecting rod pass through the connecting rod and are connected with the draw-in groove. The utility model discloses can satisfy five-prevention chain operation requirement reliably cooperatedly, can not operate the circuit breaker after realizing isolator separating brake better.
Description
Technical Field
The utility model belongs to the technical field of the high-voltage distribution, a looped netowrk cabinet isolator and circuit breaker are related to, concretely relates to reverse interlocking gear of isolator and circuit breaker.
Background
The 'interlocking' of the high-voltage switch cabinet is an important measure for ensuring the operation safety of a power grid, ensuring the personal safety and equipment safety and placing misoperation. GB3906-2006 3-35kV AC metal enclosed switchgear makes clear provisions for this purpose. "linkage" is often described as: the circuit breaker is prevented from being opened and closed by mistake; the isolating switch is prevented from being switched on and off under load; preventing the charged hanging (closing) of a grounding wire (a grounding switch); preventing power transmission with ground wire; prevent the wrong entering into the electrified interval. The above five items are for short "five prevention" to prevent misoperation. At present, most of high-voltage switch cabinets in the market have perfect interlocking modes, but some high-voltage switch cabinets are still imperfect in interlocking, particularly mechanical interlocking.
For the linkage requirements in "five prevention", the mechanical linkage can be classified into "active" and "passive". So-called "active interlocking": the unlocking condition is that the unlocking cannot be carried out if the normal unlocking condition is not available in the interlocking state, so that the misoperation cannot be carried out at all. Passive interlocking: the interlocking state is characterized in that an unlocking condition possibly occurs due to an abnormal reason to unlock the lock, and the circuit breaker is interlocked to ensure the safety of equipment and personnel regardless of the success of operation due to misoperation at the moment. The design in the high-voltage switch cabinet does not want to adopt the passive interlocking, and the active interlocking is adopted as much as possible. For example, when the circuit breaker is in the closed position, it is mechanically ensured that the disconnector or disconnector plug is blocked from operation, without adverse effects even in the event of an operational error. However, at present, there are places to be improved and optimized in the active interlocking, and the existing active interlocking device is too cumbersome, has insufficient response sensitivity, and is prone to have errors in the reverse interlocking.
SUMMERY OF THE UTILITY MODEL
In view of this, for solving above-mentioned prior art not enough, the utility model aims at providing a reverse interlocking mechanism of isolator and circuit breaker overcomes the incident such as the person and equipment that cause because of reasons such as linkage failure in current equipment fixing trial run, the operation process. When the disconnecting switch is switched off, the action of a closing button of the circuit breaker is limited through the four limiting connecting rods, the double fracture during maintenance is realized, a safer operation environment is provided, and safety accidents caused by misoperation in the field power transmission process are avoided.
In order to achieve the above object, the utility model adopts the following technical scheme:
a reverse interlocking mechanism of a disconnecting switch and a circuit breaker comprises the circuit breaker and the disconnecting switch which are arranged up and down and connected, and further comprises a clamping groove, a first connecting rod, a first connecting lever pressing plate, a second connecting lever pressing plate and a second connecting rod;
the draw-in groove corresponds and establishes the combined floodgate button department at the circuit breaker, first connecting rod is established on the circuit breaker, and first connecting rod is connected with first connecting lever clamp plate, first connecting lever clamp plate position is established in the outside of isolator's isolation main shaft correspondingly, and second connecting lever clamp plate is connected and is established in the below of first connecting lever clamp plate, and second connecting lever clamp plate is connected with isolator's isolation main shaft, and second connecting lever clamp plate and second connecting rod swing joint, second connecting rod pass through the connecting rod and are connected with the draw-in groove.
Furthermore, the connecting rod between the clamping groove and the second connecting rod is L-shaped.
Furthermore, one end of the connecting rod is connected with the clamping groove through a matched screw and a threaded hole, and the other end of the connecting rod is connected with the tail end of the second connecting rod through a matched screw and a threaded hole.
Furthermore, the second connecting rod comprises a tail end and a contact end, and the contact end is matched with the second crank arm pressing plate in shape.
Furthermore, the first connecting rod is arranged at the opening and closing position of the circuit breaker and connected with a closing button of the circuit breaker, and the first connecting rod is used for opening and closing operations of the circuit breaker.
The utility model has the advantages that:
a reverse interlocking mechanism of an isolating switch and a circuit breaker overcomes the safety accidents of human bodies, equipment and the like caused by interlocking failure and the like in the installation and test operation and the operation process of the existing equipment. The concrete points are as follows:
the utility model discloses an active chain design, when isolator separating brake, through spacing four-bar linkage, restriction circuit breaker combined floodgate button action realizes the dual fracture when overhauing, provides safer operational environment, avoids taking place the incident because of the maloperation at on-the-spot power transmission in-process. The utility model discloses can satisfy five-prevention chain operation requirement reliably cooperatedly, can not operate the circuit breaker after realizing isolator separating brake better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of FIG. 1;
the labels in the figure are: 1. draw-in groove, 2, first connecting rod, 3, first connecting lever clamp plate, 4, second connecting lever clamp plate, 5, second connecting rod, 6, circuit breaker, 7, isolator.
Detailed Description
The following provides specific embodiments, which will further clearly, completely and specifically explain the technical solutions of the present invention. The present embodiment is the best embodiment based on the technical solution of the present invention, but the scope of the present invention is not limited to the following embodiments.
A reverse interlocking mechanism of a disconnecting switch and a circuit breaker comprises a circuit breaker 6 and a disconnecting switch 7 which are arranged up and down and connected, and further comprises a clamping groove 1, a first connecting rod 2, a first connecting lever pressing plate 3, a second connecting lever pressing plate 4 and a second connecting rod 5;
draw-in groove 1 corresponds the combined floodgate button department of establishing at circuit breaker 6, first connecting rod 2 is established on circuit breaker 6, and first connecting rod 2 is connected with first connecting lever clamp plate 3, establish the outside at isolator 7's isolation main shaft correspondingly in first connecting lever clamp plate 3 position, and second connecting lever clamp plate 4 is connected and is established in the below of first connecting lever clamp plate 3, and second connecting lever clamp plate 4 is connected with isolator 7's isolation main shaft, and second connecting lever clamp plate 4 and 5 swing joint of second connecting rod, second connecting rod 5 pass through the connecting rod and are connected with draw-in groove 1.
Further, first link 2 is established at the divide-shut brake department of circuit breaker 6 and is linked to each other with the combined floodgate button of circuit breaker 6, and first link 2 is used for the divide-shut brake operation of circuit breaker 6.
Furthermore, a connecting rod between the clamping groove 1 and the second connecting rod 5 is L-shaped.
Furthermore, one end of the connecting rod is connected with the clamping groove 1 through a matched screw and a threaded hole, and the other end of the connecting rod is connected with the tail end of the second connecting rod 5 through a matched screw and a threaded hole.
Further, the second connecting rod 5 comprises a tail end and a contact end, and the contact end is matched with the second crank arm pressing plate 4 in shape.
The utility model discloses a theory of operation does:
1. when the breaker 6 is switched on, the first crank arm pressing plate 3 rotates downwards to shield an isolation main shaft of the isolation switch 7, and the isolation of the isolation switch cannot be operated;
2. when the isolating switch 7 is switched off, the second crank arm pressing plate 4 on the isolating main shaft moves away, the second connecting rod 5 moves upwards, the switching-on button of the circuit breaker 6 is limited by the clamping groove 1, and the circuit breaker cannot be switched on;
3. when the isolating switch 7 is grounded and opened, the isolating main switch can be operated;
4. when the breaker 6 is in an opening state, the isolating switch 7 can be operated to isolate the opening to a grounding position;
5. when the isolating switch 7 is isolated to the grounding position, the lower cabinet door can be opened.
To sum up, the utility model discloses a reverse interlocking gear of isolator and circuit breaker overcomes the incident such as the person that causes because of reasons such as linkage failure in current equipment fixing trial run, the operation process and equipment. The specific innovation points are as follows: the utility model discloses an active chain design, when isolator separating brake, through spacing four-bar linkage, restriction circuit breaker combined floodgate button action realizes the dual fracture when overhauing, provides safer operational environment, avoids taking place the incident because of the maloperation at on-the-spot power transmission in-process. The utility model discloses can satisfy five-prevention chain operation requirement reliably cooperatedly, can not operate the circuit breaker after realizing isolator separating brake better.
The essential features, the basic principle and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that the present invention can be modified in various ways according to the actual situation without departing from the spirit and scope of the present invention, and these modifications and improvements are all within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a reverse interlocking gear of isolator and circuit breaker, includes circuit breaker (6) and isolator (7) that set up from top to bottom and link to each other, its characterized in that: the clamping device further comprises a clamping groove (1), a first connecting rod (2), a first crank arm pressing plate (3), a second crank arm pressing plate (4) and a second connecting rod (5);
draw-in groove (1) corresponds the closing button department of establishing at circuit breaker (6), establish on circuit breaker (6) first connecting rod (2), first connecting rod (2) are connected with first connecting lever clamp plate (3), establish in the outside of the isolation main shaft of isolator (7) correspondingly in first connecting lever clamp plate (3) position, second connecting lever clamp plate (4) are connected and are established in the below of first connecting lever clamp plate (3), and second connecting lever clamp plate (4) are connected with the isolation main shaft of isolator (7), second connecting lever clamp plate (4) and second connecting rod (5) swing joint, and second connecting rod (5) are connected with draw-in groove (1) through the connecting rod.
2. The reverse interlock mechanism of claim 1, wherein: the connecting rod between the clamping groove (1) and the second connecting rod (5) is L-shaped.
3. The reverse interlock mechanism of claim 2, wherein: one end of the connecting rod is connected with the clamping groove (1) through a matched screw and a threaded hole, and the other end of the connecting rod is connected with the tail end of the second connecting rod (5) through a matched screw and a threaded hole.
4. The reverse interlock mechanism of claim 1, wherein: the second connecting rod (5) comprises a tail end and a contact end, and the contact end is matched with the second crank arm pressing plate (4) in shape.
5. The reverse interlock mechanism of claim 1, wherein: first connecting rod (2) are established at the divide-shut brake department of circuit breaker (6) and are linked to each other with the combined floodgate button of circuit breaker (6), and first connecting rod (2) are used for the divide-shut brake operation of circuit breaker (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020665403.9U CN211742974U (en) | 2020-04-27 | 2020-04-27 | Reverse interlocking mechanism of isolating switch and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020665403.9U CN211742974U (en) | 2020-04-27 | 2020-04-27 | Reverse interlocking mechanism of isolating switch and circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211742974U true CN211742974U (en) | 2020-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020665403.9U Active CN211742974U (en) | 2020-04-27 | 2020-04-27 | Reverse interlocking mechanism of isolating switch and circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211742974U (en) |
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2020
- 2020-04-27 CN CN202020665403.9U patent/CN211742974U/en active Active
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