CN211929342U - Safe and reliable's interlock - Google Patents
Safe and reliable's interlock Download PDFInfo
- Publication number
- CN211929342U CN211929342U CN202020924645.5U CN202020924645U CN211929342U CN 211929342 U CN211929342 U CN 211929342U CN 202020924645 U CN202020924645 U CN 202020924645U CN 211929342 U CN211929342 U CN 211929342U
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- program lock
- program
- lock
- isolating switch
- door lock
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Abstract
The utility model discloses a safe and reliable interlocking device, which comprises a mounting plate arranged on a frame, wherein a program lock is arranged on the mounting plate, one side of the program lock, which is far away from the mounting plate, is connected with a door lock sleeve through a guide rod, the program lock is matched with a program lock key, and the door lock sleeve is matched with an isolating switch operating shaft; when the program lock is in a locking state and the isolating switch is in a switching-off state, the program lock pushes the guide rod to prevent the door lock sleeve from moving, and the operating handle where the operating shaft of the isolating switch is located cannot be inserted into the operating hole of the isolating switch and cannot operate the isolating switch to switch on; after the program lock is unlocked by the program lock key, the door lock sleeve can move, the operating handle closes the isolating switch, the door lock sleeve blocks the guide rod, and the program lock cannot be locked. The utility model has the advantages of reasonable design for isolator must be equipped with the procedure lock key, but the isolator combined floodgate is operated, and then the operation vacuum switch combined floodgate is switched on.
Description
Technical Field
The utility model relates to a high-pressure vacuum switch technical field especially relates to a safe and reliable's interlock.
Background
The switch equipment is an important facility for power transmission and distribution in the power industry, the safety operation of the equipment is an important measure for ensuring the personal safety, and an interlocking device is added for realizing the safety operation of the equipment. In order to effectively prevent misoperation of running electrical equipment and cause major safety accidents in a power system in China, GB3906-2006 3.6 kV-40.5 kV alternating current metal closed switch equipment and control equipment makes clear rules on five-prevention interlocking, and the contents are as follows: 1) the circuit breaker is prevented from being wrongly opened and closed; 2) the isolating switch is prevented from being switched on and off under load; 3) preventing the live-engaging ground switch; 4) the circuit breaker is prevented from being switched on when the grounding switch is grounded; 5) prevent the wrong entering into the electrified interval. For some more important places, the outage often causes great loss, and for such a situation, the switch cabinet often selects two paths of power incoming lines, one path of the power is mains supply under general conditions, the other path is self-generating power, and the power is required to be switched to the other path of the power when one path of the power is in power failure, so that the continuity of power supply is ensured, but the other path of the power is not switched on after the other path of the power is switched on, so that the accident caused by the fact that one path of the power with electricity is reversely supplied to the other path of the power without electricity is avoided.
When dual power supply incoming lines are conducted in a distribution room, two-in-one interlocking requirements are generally required to be made on incoming line cabinets, namely, only one switch of the two incoming line cabinets can be electrified to work; the distribution room dual supply inlet wire, middle contact cabinet require usually to do the two interlocking requirements of three-in-one to inlet wire cabinet and contact cabinet, two inlet wire cabinets and contact cabinet can only have two switches can the circular telegram work promptly. The interlocking device in the prior art has the problems of complex structure and poor safety, and needs to be optimized and improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned problem that exists among the prior art, provide a safe and reliable's interlock.
In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:
a safe and reliable interlocking device comprises a mounting plate arranged on a rack, wherein a program lock is arranged on the mounting plate, one side of the program lock, which is far away from the mounting plate, is connected with a door lock sleeve through a guide rod, the program lock is matched with a separable program lock key, and the door lock sleeve is matched with an isolating switch operating shaft;
when the program lock is in a locking state and the isolating switch is in a switching-off state, the program lock pushes the guide rod to prevent the door lock sleeve from moving, so that an operating handle where an operating shaft of the isolating switch is located cannot be inserted into an operating hole of the isolating switch, and the isolating switch cannot be operated to switch on;
after the program lock key unlocks the program lock, the door lock sleeve can move, so that the operating handle can close the isolating switch, after the isolating switch closes, the door lock sleeve blocks the guide rod, so that the program lock cannot be locked, and at the moment, the program lock key is hung on the program lock and cannot be taken down.
Further, in the safe and reliable interlocking device, the mounting plate is welded and fixed with the program lock.
Further, in the above-mentioned safe and reliable interlock device, the program lock is a mechanical anti-error program.
Further, in the above-described safety and reliability interlock device, the door lock case is located on the front side of the disconnecting switch operation hole.
Furthermore, in the safe and reliable interlocking device, the dual-power-supply incoming line cabinet is provided with a program lock key to realize two-in-one electrical interlocking; the dual-power-supply incoming line cabinet and the contact cabinet are provided with two program lock keys, so that three-in-two electrical interlocking is realized.
The utility model has the advantages that:
the utility model has the advantages of reasonable design for isolator must be equipped with the procedure lock key, but the isolator combined floodgate is operated, and then the operation vacuum switch combined floodgate is switched on. Only 1 program lock key is matched under the condition of the dual-power-supply incoming line cabinet to meet the requirement of 2-in-1 interlocking, and only 2 program lock keys are matched under the condition of the dual-power-supply incoming line cabinet and the contact cabinet to meet the requirement of 3-in-2 interlocking.
Of course, it is not necessary for any product to achieve all of the above advantages simultaneously in practicing the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that 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 schematic view of the locking state of the present invention;
fig. 3 is a schematic view of the unlocking state of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-mounting plate, 2-program lock, 3-program lock key, 4-guide rod, 5-door lock sleeve and 6-isolating switch operating shaft.
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.
Referring to fig. 1-3, the present embodiment is a safe and reliable interlock device, which includes a mounting plate 1 mounted on a rack, a program lock 2 mounted on the mounting plate 1, a door lock sleeve 5 connected to a side of the program lock 2 away from the mounting plate 1 via a guide rod 4, a separable program lock key 3 configured on the program lock 2, and an isolating switch operating shaft 6 configured on the door lock sleeve 5.
In the embodiment, when the program lock 2 is in a locking state and the isolating switch is in a switching-off state, the program lock 2 pushes the guide rod 4 to prevent the door lock sleeve 5 from moving, so that an operating handle where the isolating switch operating shaft 6 is located cannot be inserted into an isolating switch operating hole, and the isolating switch cannot be operated to switch on;
in this embodiment, after the program lock key 3 unlocks the program lock 2, the door lock sleeve 5 can move, so that the operating handle can close the isolating switch, after the isolating switch closes, the door lock sleeve 5 blocks the guide rod, so that the program lock 2 cannot be locked, and at this time, the program lock key 3 is hung on the program lock 2 and cannot be taken down.
In this embodiment, the mounting plate 1 and the program lock 2 are welded and fixed. The program lock 2 is a mechanical anti-misoperation program lock.
In this embodiment, the door lock case 5 is located on the front side of the disconnecting switch operation hole.
In the embodiment, the dual-power-supply incoming line cabinet is provided with a program lock key 3 to realize two-in-one electrical interlocking; the dual-power-supply incoming line cabinet and the contact cabinet are provided with two program lock keys 3, and three-in-two electrical interlocking is realized.
One specific application of this embodiment is: this embodiment structural design is reasonable for isolator must be equipped with the program lock key, but operation isolator combined floodgate, and then the operation vacuum switch combined floodgate is carried out the circular telegram. Only 1 program lock key is matched under the condition of the dual-power-supply incoming line cabinet to meet the requirement of 2-in-1 interlocking, and only 2 program lock keys are matched under the condition of the dual-power-supply incoming line cabinet and the contact cabinet to meet the requirement of 3-in-2 interlocking.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. A safety interlock, characterized by: the interlocking device comprises a mounting plate (1) mounted on a rack, wherein a program lock (2) is mounted on the mounting plate (1), one side, far away from the mounting plate (1), of the program lock (2) is connected with a door lock sleeve (5) through a guide rod (4), a separable program lock key (3) is matched with the program lock (2), and an isolating switch operating shaft (6) is matched with the door lock sleeve (5);
when the program lock (2) is in a locking state and the isolating switch is in a switching-off state, the program lock (2) pushes the guide rod (4) to prevent the door lock sleeve (5) from moving, so that an operating handle where the isolating switch operating shaft (6) is located cannot be inserted into an isolating switch operating hole, and the isolating switch cannot be operated to switch on;
after the program lock key (3) unlocks the program lock (2), the door lock sleeve (5) can move, so that the operating handle can close the isolating switch, after the isolating switch is closed, the door lock sleeve (5) blocks the guide rod, so that the program lock (2) cannot be locked, and at the moment, the program lock key (3) is hung on the program lock (2) and cannot be taken down.
2. The safety interlock of claim 1 wherein: the mounting plate (1) is fixed with the program lock (2) in a welding mode.
3. The safety interlock of claim 1 wherein: the program lock (2) is a mechanical anti-misoperation program lock.
4. The safety interlock of claim 1 wherein: the door lock sleeve (5) is positioned on the front side of the isolating switch operation hole.
5. The safety interlock of claim 1 wherein: the dual-power-supply incoming line cabinet is provided with a program lock key (3) to realize two-in-one electrical interlocking; the dual-power-supply incoming line cabinet and the contact cabinet are provided with two program lock keys (3), and three-in-two electrical interlocking is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020924645.5U CN211929342U (en) | 2020-05-28 | 2020-05-28 | Safe and reliable's interlock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020924645.5U CN211929342U (en) | 2020-05-28 | 2020-05-28 | Safe and reliable's interlock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211929342U true CN211929342U (en) | 2020-11-13 |
Family
ID=73321015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020924645.5U Active CN211929342U (en) | 2020-05-28 | 2020-05-28 | Safe and reliable's interlock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211929342U (en) |
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2020
- 2020-05-28 CN CN202020924645.5U patent/CN211929342U/en active Active
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