CN201608440U - Safe operation device used for interruption maintenance of high-voltage inverter power cabinet - Google Patents
Safe operation device used for interruption maintenance of high-voltage inverter power cabinet Download PDFInfo
- Publication number
- CN201608440U CN201608440U CN2009202953001U CN200920295300U CN201608440U CN 201608440 U CN201608440 U CN 201608440U CN 2009202953001 U CN2009202953001 U CN 2009202953001U CN 200920295300 U CN200920295300 U CN 200920295300U CN 201608440 U CN201608440 U CN 201608440U
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- Prior art keywords
- power cabinet
- operation device
- high voltage
- electromagnetic lock
- closed contact
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Abstract
The utility model discloses a safe operation device used for the interruption maintenance of a high-voltage inverter power cabinet, relating to the technical field of high-voltage inverter design. The current safe operation device of the high-voltage inverter power cabinet has unreasonable design and unsafe maintenance. The safe operation device comprises an electriferous display (2) and is characterized by also comprising an electromagnetic lock (4) arranged on a power cabinet door; the electriferous display (2) is provided with a normally closed contact; and the electromagnetic lock (4) is serially connected with the normally closed contact of the electriferous display (2). The device increases the electromagnetic lock on the cabinet door, and the cabinet door can be opened only when the high-voltage inverter cabinet is powered off, thus ensuring the equipment and operator safety of the high-voltage inverter power cabinet in the interruption maintenance.
Description
[technical field]
The utility model relates to a kind of safety operation device that is used for high voltage frequency converter power cabinet interruption maintenance, belongs to the high voltage converter design field.
[background technology]
High voltage converter is when operation, and the power cabinet of high voltage converter generally needs self-locking closure, to guarantee personal safety.There are some potential safety hazards in present many high voltage frequency converter power cabinets, particularly when the high voltage converter interruption maintenance, do not satisfy the requirement of safety operation, exist the device that does not meet the pertinent regulations in " electrical safety working regulation " that the safety of the person and equipment is on the hazard.Show: regulation in " electrical safety working regulation ", for the 6-10kV electric equipment, should accomplish with the direct electrical verification of electroscope, then splice grafting ground disconnecting link (hanging earthing conductor), high voltage display device can only be as a kind of prompting measure, otherwise causes the charged ground disconnecting link accident that sockets easily.And carry out now high voltage converter interruption maintenance when operation; judge whether input side is charged; usually check high voltage display device; rather than know by electrical verification operation; because generally need open the regulator cubicle rear cabinet door during electrical verification operation; could carry out electrical verification to the input side cable end of high voltage converter; and common high voltage frequency converter power cabinet is provided with the mechanical latching function of ground connection disconnecting link and rear cabinet door; promptly only behind the ground connection disconnecting link that closes; can open the back door; cause before splice grafting ground disconnecting link and can't carry out direct electrical verification the input cable end; do not meet the pertinent regulations of " electrical safety working regulation ", the drop-down ground connection disconnecting link of situation in that electricity is arranged makes U; V; the short circuit of W phase; damage equipment very easily, obvious this protective device is unreasonable.What is more, and the high voltage frequency converter power cabinet is not even used mechanical door lock, directly is screwed a cabinet, if operating personnel directly open charged frequency converter cabinet door, security incident takes place very easily.Below all do not reach the purpose of safety inspection.
[utility model content]
The technical assignment of the technical problems to be solved in the utility model and proposition is that the prior art scheme is improved and improved, and provides a kind of safety operation device that is used for high voltage frequency converter power cabinet interruption maintenance, to reach the purpose of safety inspection.For this reason, the utility model is taked following technical scheme:
A kind of safety operation device that is used for high voltage frequency converter power cabinet interruption maintenance, comprise electrification display, it is characterized in that: it also comprises the electromagnetic lock of being located on the power cabinet door, and described electrification display is established normally-closed contact, and described electromagnetic lock is connected in series with this electrification display normally-closed contact.The normally-closed contact of electrification display disconnects for energising, sets up an electromagnetic lock, and electromagnetic lock only in the display outage, under the situation of normally-closed contact closure, just can be opened, and the circuit that promptly has only the electromagnetic lock place is under the situation of path, and the cabinet door just can be opened.Under the situation that the display display lamp does not work in that the normally-closed contact of display is working properly, can prevent effectively that the situation of opening the cabinet door when power cabinet is worked from taking place.Safe, the reliable operation, simple in structure of this device.
As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature:
Described electromagnetic lock is connected in series with the control contact of a control of conversion device job.When frequency converter was worked, the control contact disconnected, thereby the circuit that makes the electromagnetic lock place prevents to unblank for opening circuit, when the frequency converter input does not have the electricity input, and the control closing of contact, this moment, electromagnetic lock just can be opened the cabinet door.Further improve the fail safe of maintenance, guarantee only when having the electricity input, just can not open the cabinet door.
Described control contact is the circuit breaker normally-closed contact.Both selections are decided by the control circuit of frequency converter.When high voltage converter was charged, the electrification display normally-closed contact disconnected, and perhaps high voltage converter is at the charging operation state, and its output circuit breaker normally-closed contact disconnects, and electromagnetic lock does not have electricity when the time comes, the locking rear cabinet door, and this moment, rear cabinet door was forbidden to open.When high voltage converter was in inspecting state, high voltage converter output circuit breaker disconnected, and electrification display does not have charged indication (normally-closed contact closure), the electromagnetic lock energising, and rear cabinet door just allows to be opened, and carries out normal safety inspection work thereby can open the cabinet door.
Described control contact is the normally-closed contact of relay.The control contact can be circuit breaker normally-closed contact or relay normally-closed contact, and both selections are decided by the control circuit of frequency converter.Only all be in closure state at relay or circuit breaker normally-closed contact and display normally-closed contact, electromagnetic lock just allows to be opened, and realizes dual chain control, guarantees the fail safe of interruption maintenance work.
Beneficial effect: on the cabinet door, set up electromagnetic lock, only when the high voltage converter cabinet has electricity, just can not open the cabinet door, guarantee the equipment of high voltage frequency converter power cabinet when interruption maintenance and operator's safety.
[description of drawings]
Fig. 1 is a high voltage frequency converter power cabinet master TV structure schematic diagram;
Fig. 2 is a high voltage frequency converter power cabinet backsight structural representation;
Fig. 3 is the utility model schematic diagram.
[embodiment]
Below in conjunction with Figure of description the technical solution of the utility model is described in further detail.
As shown in Figure 1, 2, the utility model comprises electrification display 2, is located at the electromagnetic lock 4 on the power cabinet door, and electromagnetic lock 4 is connected in series with the normally-closed contact of electrification display 2; For improving fail safe, electromagnetic lock 4 is connected in series with the control contact of a control of conversion device job, wherein controls the normally-closed contact 3 that the contact can be circuit breaker normally-closed contact or relay.As shown in Figure 3, the utility model device mainly is to insert in the control loop of back door electromagnetic lock 4 after relay normally-closed contact 3 is connected with electrification display 2 normally-closed contacts, all can't open electromagnetic lock 4 when any one normally-closed contact is closed in relay normally-closed contact 3 and electrification display 2 normally-closed contacts.After the high voltage frequency converter power cabinet all had a power failure, relay normally-closed contact 3 was all closed with electrification display 2 normally-closed contacts, and electromagnetic lock 4 just allows to be opened.Promptly just can open the back door of regulator cubicle, guaranteeing this moment does not have in the high voltage converter cabinet.
A kind of safety operation device that is used for high voltage frequency converter power cabinet interruption maintenance shown in above Fig. 1-3 is a specific embodiment of the utility model; the utility model substantive distinguishing features and progress have been embodied; can be according to the use needs of reality; under enlightenment of the present utility model; it is carried out the equivalent modifications of aspects such as shape, structure, all at the row of the protection range of this programme.
Claims (4)
1. safety operation device that is used for high voltage frequency converter power cabinet interruption maintenance, comprise electrification display (2), it is characterized in that: it also comprises the electromagnetic lock of being located on the power cabinet door (4), described electrification display (2) is established normally-closed contact, and described electromagnetic lock (4) is connected in series with described electrification display (2) normally-closed contact.
2. a kind of safety operation device that is used for high voltage frequency converter power cabinet interruption maintenance according to claim 1 is characterized in that: described electromagnetic lock (4) is connected in series with the control contact of a control of conversion device job.
3. a kind of safety operation device that is used for high voltage frequency converter power cabinet interruption maintenance according to claim 2 is characterized in that: described control contact is circuit breaker normally-closed contact (3).
4. a kind of safety operation device that is used for high voltage frequency converter power cabinet interruption maintenance according to claim 2 is characterized in that: described control contact is the normally-closed contact (3) of relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202953001U CN201608440U (en) | 2009-12-29 | 2009-12-29 | Safe operation device used for interruption maintenance of high-voltage inverter power cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202953001U CN201608440U (en) | 2009-12-29 | 2009-12-29 | Safe operation device used for interruption maintenance of high-voltage inverter power cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201608440U true CN201608440U (en) | 2010-10-13 |
Family
ID=42953141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202953001U Expired - Fee Related CN201608440U (en) | 2009-12-29 | 2009-12-29 | Safe operation device used for interruption maintenance of high-voltage inverter power cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201608440U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244771A (en) * | 2015-10-30 | 2016-01-13 | 宜昌市东明电气有限责任公司 | High-voltage electroscope window apparatus and switch cabinet |
-
2009
- 2009-12-29 CN CN2009202953001U patent/CN201608440U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244771A (en) * | 2015-10-30 | 2016-01-13 | 宜昌市东明电气有限责任公司 | High-voltage electroscope window apparatus and switch cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 312300 No. 1801 Renmin West Road, Zhejiang, Shangyu Co-patentee after: Wolong Electrical Group Hangzhou Research Institute Co., Ltd. Patentee after: Wolong Electric Group Co., Ltd. Address before: 312300 No. 1801 Renmin West Road, Zhejiang, Shangyu Co-patentee before: Wolong Electric (Group) Co., Ltd. Patentee before: Wolong Electric Group Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101013 Termination date: 20111229 |