CN108807039A - Medium Voltage Switchgear cable vault cabinet door interlock - Google Patents
Medium Voltage Switchgear cable vault cabinet door interlock Download PDFInfo
- Publication number
- CN108807039A CN108807039A CN201810826376.6A CN201810826376A CN108807039A CN 108807039 A CN108807039 A CN 108807039A CN 201810826376 A CN201810826376 A CN 201810826376A CN 108807039 A CN108807039 A CN 108807039A
- Authority
- CN
- China
- Prior art keywords
- lock
- latching electromagnet
- cable vault
- procedure
- core connecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
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- Warehouses Or Storage Devices (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The present invention relates to a kind of Medium Voltage Switchgear cable vault cabinet door interlocks, including cable vault front door, travel switch, procedure lock A, program lock key, interlock plate, latching electromagnet, electrification display, procedure lock B；The latching electromagnet, procedure lock A and travel switch are separately mounted on mounting plate or closed device, and the electrification display is mounted on cable vault front door, for showing whether enter line side is charged；Procedure lock B is mounted on rear door of switch cabinet or back shroud, for unlocking rear door of switch cabinet or back shroud；Procedure lock A lock core connecting rods in procedure lock A are fixed together with interlock plate, form linkage, and interlocked by travel switch contact and front end power supply；Latching electromagnet lock core connecting rod in the latching electromagnet corresponds to the interlocking plate hole on interlock plate；Procedure lock B lock core connecting rods in described program lock B correspond to cabinet fixed plate；It can be inserted into program lock key on procedure lock A or procedure lock B；The electrification display is electrically connected latching electromagnet.
Description
Technical field
The present invention relates to a kind of Medium Voltage Switchgear, especially a kind of Medium Voltage Switchgear cable vault cabinet door interlock.
Background technology
With the continuous expansion of Medium Voltage Switchgear application range, application field is continuously increased, to its security requirement
It is higher and higher.Experience have shown that the misoperation fault being largely happened on Medium Voltage Switchgear should be evitable, but because interlocking work(
Energy is not perfect and is not avoided that, causes a large amount of casualties and equipment damage.
Medium Voltage Switchgear as controller switching equipment in use, its electriferous state is determined by power supply system state.In existing
The cabinet that compresses switch generally is identified using warning or using the mistake prevented by the way of electric interlock to switchgear cable chamber door or cover board
All there is certain defect and deficiency in operation, both modes.
There are larger security risks for warning mark, and especially when being overhauled, operating personnel may not know about now
Field power distribution equipment working condition carries out maloperation in the case where power supply system is still powered, by switchgear cable chamber door or lid
Plate is opened by force, to bring larger threat to personal safety；Medium Voltage Switchgear cable chamber door or cover board use electric interlock
Mode, security risk is not perfect essentially from the relatively low reliability of electric interlock or interlock.Electric interlock is normal
The interlock fault caused by the reasons such as electric elements damage or line fault, to bring security risk.
In order to avoid unnecessary personal injury and equipment damage, need to design a kind of Medium Voltage Switchgear cable vault cabinet door connection
Locking device.
Invention content
In order to keep the interlocking of Medium Voltage Switchgear relatively reliable, ensure to prevent to cause to set because of maloperation when carrying out Maintenance and Repair
Standby the case where charging, to eliminate accident potential, the present invention provides a kind of Medium Voltage Switchgear cable vault cabinet door interlock,
The maloperation in maintenance process is can effectively avoid, which can effectively ensure that the safety of the person and equipment, improve the peace of equipment
Quan Xing, reliability.
To achieve the above object, the technical scheme is that：A kind of Medium Voltage Switchgear cable vault cabinet door interlock, packet
Include cable vault front door, travel switch, procedure lock A, program lock key, interlock plate, latching electromagnet, electrification display, procedure lock
B；The latching electromagnet, procedure lock A and travel switch are separately mounted on mounting plate or closed device, the electrification display
Device is mounted on cable vault front door, for showing whether enter line side is charged；Described program locks B and is mounted on rear door of switch cabinet or rear cover
On plate, for unlocking rear door of switch cabinet or back shroud；Described program is locked procedure lock A lock core connecting rods one end in A and is consolidated with interlock plate
Surely it links together, forms linkage, the other end connects travel switch（2）In travel switch lock core connecting rod（10）, and pass through row
Journey switch contact is interlocked with front end power supply；Latching electromagnet lock core connecting rod in the latching electromagnet corresponds on interlock plate
Interlocking plate hole；Procedure lock B lock core connecting rods in described program lock B correspond to cabinet fixed plate；Described program locks A or procedure lock B
Upper pluggable program lock key；The electrification display is electrically connected latching electromagnet.
The latching electromagnet, which is mounted in closed device, reserves travel switch lock core connecting rod extended position, program key
Spoon operating position and latching electromagnet connecting terminal.
Emergency unlocking device is arranged in the latching electromagnet lock core connecting rod top of the latching electromagnet, when generation is latched electromagnetism
When iron lock damage, latching electromagnet lock core connecting rod is discharged the interlocking plate hole being detached from interlock plate by the emergency unlocking device to carry out
Unlock.
Electrification display detection enter line side whether dead electricity, if dead electricity, electrification display connects latching electromagnet, described
Latching electromagnet action makes latching electromagnet lock core connecting rod be detached from the interlocking plate hole on interlock plate, realizes electrification display and locking
The interlocking of electromagnet and interlock plate.
When cable vault front door is opened, travel switch resets, and when enter line side dead electricity, the latching electromagnet action keeps locking electric
Magnet lock core connecting rod is attracted, the interlocking plate hole being detached from interlock plate, and the procedure lock A keys on rotation procedure lock A take out procedure lock
A keys realize that the key on rotation procedure lock unlocks interlocking.
It is inserted into the procedure lock B keyholes being mounted on Medium Voltage Switchgear back door when by program lock key, after rotating key,
Described program lock B lock core connecting rods are separated from cabinet fixed plate, and interlocking is unlocked, Medium Voltage Switchgear back door or cover board can open or
It removes, completes unlock.
When cable vault front door is opened, when the non-dead electricity of enter line side, the latching electromagnet is not operating, the latching electromagnet lock
Core connecting rod discharges, without departing from the interlocking plate hole on interlock plate.
When program lock key is not reset in procedure lock A, the travel switch lock core connecting rod release makes cable vault front door
It can not close, the travel switch action, front end power supply can not power.
The invention has the advantages that：
（1）The present invention use Programmed Design, by flow carry out operation and it is easy to operate；
（2）The present invention can effectively avoid maloperation in such a way that electric interlock adds mechanical interlocking, and the safety for improving equipment can
By property, reduce accident risk.
（3）The interlock structure of the present invention is simple and convenient to operate, securely and reliably, can be prevented by interlock design
Maloperation is charged, equipment and personal safety are improved.
（4）The present invention can effectively be avoided in operating process using mechanization power-up gasification design, sequencing flow, the person
The middle maloperation that may occur, prevents to charge maloperation hidden danger, reaches reduction accident risk, improve the purpose of reliability.
Description of the drawings
Fig. 1 is the structural front view before the unlock of Medium Voltage Switchgear cable vault cabinet door interlock；
Fig. 2 is the structural side view before the unlock of Medium Voltage Switchgear cable vault cabinet door interlock；
Fig. 3 is the structural front view after the unlock of Medium Voltage Switchgear cable vault cabinet door interlock；
Fig. 4 is the structural side view after the unlock of Medium Voltage Switchgear cable vault cabinet door interlock.
Specific implementation mode
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
The Medium Voltage Switchgear cable vault cabinet door interlock of the present invention is mainly used for ensuring the person in maintenance and maintenance process
With the safety of equipment.The present invention adds the design of electric interlock, programming operations mode, reciprocal interlocking grasping using mechanical interlocking
It must be operated according to design cycle during work, it is ensured that the safety of the reliability and equipment of interlocking.
The present invention ensures Medium voltage switch or circuit breaker using the form of Mechanically programm's lock power-up gas element interlock by the interlocking of component
After the interior power-off of cabinet and front-end power power cut-off, Medium Voltage Switchgear cable vault cabinet could be opened by the mechanically actuated of procedure lock
Door dismantles its cover board, and the maintenance and maintenance work of component in Medium Voltage Switchgear are carried out in the case where ensuring safety.
Cable vault's cabinet door involved by the Medium Voltage Switchgear cable vault cabinet door interlock of the present invention is divided into cable vault front door
With cable vault back door or back shroud.
As shown in Figures 1 to 4, Medium Voltage Switchgear cable vault cabinet door interlock of the invention, including cable vault front door 1,
Travel switch 2, procedure lock A3, program lock key 4, interlock plate 5, latching electromagnet 6, electrification display 7, procedure lock B8, cabinet
Fixed plate 9, travel switch lock core connecting rod 10, procedure lock A lock core connecting rods 11, interlocking plate hole 12, latching electromagnet lock core connecting rod 13,
In procedure lock B lock core connecting rods 14, mounting plate or closed device 15, rear door of switch cabinet or back shroud 16, emergency unlocking device 17.
Latching electromagnet 6, procedure lock A3 and travel switch 2 are separately mounted on mounting plate or closed device 15, installation
Reserved 10 extended position of travel switch lock core connecting rod, 4 operating position of program lock key and locking electricity are needed in closed device 15
6 connecting terminal of magnet.Electrification display 7 is mounted on cable vault front door 1, can show whether enter line side is charged.Procedure lock B8 peaces
On rear door of switch cabinet or back shroud 16, for unlocking back shroud；11 one end of procedure lock A lock core connecting rods is fixed with interlock plate 5
It links together, forms linkage；The other end connects the travel switch lock core connecting rod 10 in travel switch 2, and passes through travel switch 2
Contact is interlocked with front end power supply.Latching electromagnet lock core connecting rod 13 in latching electromagnet 6 corresponds to the interlocking on interlock plate 5
Plate hole 12；Procedure lock B lock core connecting rods 14 are housed, procedure lock B lock core connecting rods 14 correspond to cabinet fixed plate 9 in procedure lock B8；Program
It locks and can be inserted into program lock key 4 on A3 or procedure lock B8；Electrification display 7 is electrically connected latching electromagnet 6.
When cable vault front door 1 is closed, travel switch lock core connecting rod 10 is pushed down, 2 auxiliary contact of travel switch are latched, and upper one
Grade power supply normal work；
When cable vault front door 1 is opened, travel switch lock core connecting rod 10 discharges, and travel switch 2 resets auxiliary contact action, upper level
Power supply powers off., whereas if cable vault front door 1 is not turned off, upper level power supply will be unable to power.
1）It is interlocked with interlock plate 5 by electrification display 7 and latching electromagnet 6：Electrification display 7 by detect into
Line side whether dead electricity, if dead electricity, electrification display 7 connect latching electromagnet 6, latching electromagnet 6 action so that latching electromagnet is locked
Core connecting rod 13 is detached from the interlocking plate hole 12 on interlock plate 5；
2）By rotating the key on procedure lock, interlocking is unlocked：Cable vault front door 1 is opened, and travel switch 2 resets, and enter line side is lost
Electricity, latching electromagnet 6 act, and latching electromagnet lock core connecting rod 13 is attracted, and the interlocking plate hole 12 being detached from interlock plate 5 rotates journey
Sequence locks the procedure lock A keys 4 on A3, takes out procedure lock A keys 4；Conversely, enter line side is charged, latching electromagnet 6 is not operating, journey
Sequence lock A keys 4 fail to take out.
3）The procedure lock A keys 4 of taking-up are inserted into the procedure lock B8 keyholes being mounted on Medium Voltage Switchgear back door 16,
Key 4 is rotated, procedure lock B lock core connecting rods 14 are separated from cabinet fixed plate 9, and interlocking is unlocked, Medium Voltage Switchgear back door or cover board
16 can open or remove, and complete unlock.As shown in Figure 4.
4）Key is not reset in procedure lock A3, and travel switch lock core connecting rod 10 discharges, and cable chamber door 1 can not close at this time
It closes, travel switch 2 acts, and front end power supply can not power.
5）Travel switch 2 is resetted to be interlocked with latching electromagnet 6, prevents from avoiding being powered being not turned off front end power supply：When
Cable vault front door 1 is opened, and the non-dead electricity of enter line side, latching electromagnet 6 is not operating, and latching electromagnet lock core connecting rod 13 discharges, and is detached from
Interlocking plate hole 12 on interlock plate 5.
6）Emergency unlocking device 17 is arranged in 13 top of latching electromagnet lock core connecting rod of latching electromagnet 6, when generation is latched electromagnetism
When iron lock damage, it can be unlocked by emergency release in the case where ensuring safety.Pass through emergency unlocking device 17）It will close
It is to unlock to lock electromagnet lock core connecting rod 13 and discharge the interlocking plate hole 12 being detached from interlock plate 5.
7）By rotating the procedure lock A keys 4 on procedure lock A3, procedure lock B8 interlockings are unlocked, unlock is completed；
If procedure lock A keys 4 are not reset in procedure lock A keyholes, 2 lock core connecting rod 10 of travel switch）It can not reset, cabinet door
It can not close, to which front end power supply can not power, avoid when opening cabinet door repair, front end powers suddenly, prevents electrification from missing
The hidden danger of operation, it is ensured that personal safety.
The device of the invention installs a set of door interlock on all incoming line cabinet cable chamber doors.When opening cable chamber door
When, triggering travel switch disconnects front end power supply, and after electrification display detects enter line side power-off, latching electromagnet action is led to
Key on operation sequence lock A is crossed, key is taken out and drives interlock plate to act simultaneously., whereas if front end does not power off, then interlock plate
It can not act, key will be unable to rotation and take out.At this point, if cabinet door is not turned off, front end power supply also will be unable to power.
The key of taking-up is inserted into another procedure lock B, rotates key, it is solid that procedure lock B lock core connecting rods are separated from cabinet
On fixed board, interlocking is unlocked, and opens Medium Voltage Switchgear back door or cover board, completes unlock.
Therefore, interlocking in this way can avoid the danger that cabinet back shroud is opened in electrification, to ensure that equipment and the person are pacified
Entirely.
The specific operation process of the device of the invention：
One, before being overhauled or safeguarded, the operating procedure that is unlocked：
1) front end power supply power supply first, is cut off, whether can check front end by being mounted on electrification display 7 on cable vault front door 1
Power-off, open cable vault front door 1, travel switch 2 reset, 2 auxiliary contact of travel switch action, upper level power supply power-off or
It can not power again.At this point, latching electromagnet 6 acts, latching electromagnet lock core connecting rod 13 is attracted, the connection being detached from interlock plate 5
Jam plate hole 12；When latching electromagnet 6 damage of lock occurs, can be unlocked by 17 emergency release of emergency unlocking device.Such as Fig. 3
It is shown.
2) secondly, the program lock key 4 on rotation procedure lock A3, takes out program lock key 4；
3) again, by the program lock key 4 of taking-up, the procedure lock B8 keyholes being mounted on Medium Voltage Switchgear back door 16 are inserted into
In, rotation program lock key 4, procedure lock B lock core connecting rods 14 are separated from cabinet fixed plate 9, and interlocking is unlocked, after Medium Voltage Switchgear
Door 16 can be opened, and unlock is completed.As shown in Figure 4.
4) Medium Voltage Switchgear back door or cover board 16 finally, are opened or removed, maintenance and maintenance work are carried out.
Two, after completing maintenance or safeguarding, it is restored to operating procedure before unlock：
1) first, it will open or remove Medium Voltage Switchgear back door or cover board 16 is closed or is fixed on cabinet；
2) cabinet fixed plate 9 is opened in secondly, rotation procedure lock B8 keyhole Programs lock key 4, the insertion of procedure lock B lock core connecting rods 14
In, take out program lock key 4.As shown in Figure 2.
3) again, by the program lock key 4 of taking-up, insertion program is locked in A3 keyholes, rotation program lock key 4, program
A lock core connecting rods 11 are locked to reset with the linkage of interlock plate 5.
4) cable vault front door 1 finally, to be shut, travel switch lock core connecting rod 10 is pushed down, 2 auxiliary contact of travel switch are latched,
Upper level power supply can be restored to state before unlock with normal power supply.As shown in Figure 1.
Claims (8)
1. a kind of Medium Voltage Switchgear cable vault cabinet door interlock, including cable vault front door（1）, travel switch（2）, procedure lock A
（3）, program lock key（4）, interlock plate（5）, latching electromagnet（6）, electrification display（7）, procedure lock B（8）, feature exists
In：The latching electromagnet（6）, procedure lock A（3）And travel switch（2）It is separately mounted to mounting plate or closed device（15）
On, the electrification display（7）Mounted on cable vault front door（1）On, for showing whether enter line side is charged；Described program locks B
（8）Mounted on rear door of switch cabinet or back shroud（16）On, for unlocking rear door of switch cabinet or back shroud（16）；Described program locks A
（3）In procedure lock A lock core connecting rods（11）One end and interlock plate（5）It is fixed together, forms linkage, other end connection row
Cheng Kaiguan（2）In travel switch lock core connecting rod（10）, and pass through travel switch（2）Contact is interlocked with front end power supply；Institute
State latching electromagnet（6）In latching electromagnet lock core connecting rod（13）Corresponding interlock plate（5）On interlocking plate hole（12）；The journey
Sequence locks B（8）In procedure lock B lock core connecting rods（14）Corresponding cabinet fixed plate（9）；Described program locks A（3）Or procedure lock B（8）It is interior
It can be inserted into program lock key（4）；The electrification display（7）It is electrically connected latching electromagnet（6）.
2. Medium Voltage Switchgear cable vault cabinet door interlock according to claim 1, it is characterised in that：The locking electromagnetism
Iron（6）Mounted on closed device（15）In reserve travel switch lock core connecting rod（10）Extended position, program lock key（4）Operation
Position and latching electromagnet（6）Connecting terminal.
3. Medium Voltage Switchgear cable vault cabinet door interlock according to claim 1, it is characterised in that：The locking electromagnetism
Iron（6）Latching electromagnet lock core connecting rod（13）Emergency unlocking device is arranged in top（17）, damaged when latching electromagnet lock occurs
When, the emergency unlocking device（17）By latching electromagnet lock core connecting rod（13）Release is detached from interlock plate（5）On interlocking plate hole
（12）It is unlocked.
4. Medium Voltage Switchgear cable vault cabinet door interlock according to claim 1, it is characterised in that：The electrification display
Device（7）Detect enter line side whether dead electricity, if dead electricity, the electrification display（7）Connect latching electromagnet（6）, the locking electricity
Magnet（6）Action makes latching electromagnet lock core connecting rod（13）It is detached from interlock plate（5）On interlocking plate hole（12）, realize electrification display
Device（7）And latching electromagnet（6）With interlock plate（5）Interlocking.
5. Medium Voltage Switchgear cable vault cabinet door interlock according to claim 1, it is characterised in that：When cable vault front door
（1）It opens, travel switch（2）It resets, when enter line side dead electricity, the latching electromagnet（6）Action makes latching electromagnet lock core connect
Bar（13）It is attracted, is detached from interlock plate（5）On interlocking plate hole（12）, rotation procedure lock A（3）On procedure lock A keys（4）, take
Go out procedure lock A keys（4）, realize that the key on rotation procedure lock unlocks interlocking.
6. Medium Voltage Switchgear cable vault cabinet door interlock according to claim 1, it is characterised in that：When by program key
Spoon（4）It is inserted into and is mounted on Medium Voltage Switchgear back door（16）On procedure lock B（8）In keyhole, key is rotated（4）Afterwards, the journey
Sequence locks B lock core connecting rods（14）It is separated from cabinet fixed plate（9）On, interlocking is unlocked, Medium Voltage Switchgear back door or cover board（16）It can be with
It opens or removes, complete unlock.
7. Medium Voltage Switchgear cable vault cabinet door interlock according to claim 1, it is characterised in that：When cable vault front door
（1）It opens, when the non-dead electricity of enter line side, the latching electromagnet（6）It is not operating, the latching electromagnet lock core connecting rod（13）It releases
It puts, without departing from interlock plate（5）On interlocking plate hole（12）.
8. Medium Voltage Switchgear cable vault cabinet door interlock according to claim 1, it is characterised in that：When program lock key
（4）It is not reset to procedure lock A（3）When interior, the travel switch lock core connecting rod（10）Release, makes cable vault front door（1）It can not close
It closes, the travel switch（2）Action, front end power supply can not power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810826376.6A CN108807039B (en) | 2018-07-25 | 2018-07-25 | Medium Voltage Switchgear cable vault cabinet door interlock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810826376.6A CN108807039B (en) | 2018-07-25 | 2018-07-25 | Medium Voltage Switchgear cable vault cabinet door interlock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108807039A true CN108807039A (en) | 2018-11-13 |
| CN108807039B CN108807039B (en) | 2019-08-30 |
Family
ID=64078087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810826376.6A Active CN108807039B (en) | 2018-07-25 | 2018-07-25 | Medium Voltage Switchgear cable vault cabinet door interlock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108807039B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112233928A (en) * | 2020-10-15 | 2021-01-15 | 中国船舶重工集团公司第七0四研究所 | Earthing switch operation interlock device in cable room of medium voltage switchgear |
| CN113783109A (en) * | 2021-09-08 | 2021-12-10 | 宁波九荣环保科技有限公司 | Motor variable frequency control cabinet of modularization assembly |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3113335B1 (en) * | 2020-08-10 | 2022-11-04 | Schneider Electric Ind Sas | Interlocking device intended to prevent the earthing of a protective device |
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| CN1783382A (en) * | 1999-09-10 | 2006-06-07 | Abb公司 | Method and device for interlocking |
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| CN206471243U (en) * | 2016-12-30 | 2017-09-05 | 金盘电气集团（上海）有限公司 | High-voltage Incoming Cabinet, mother cabinet key mechanical interlock |
| CN107978474A (en) * | 2017-12-28 | 2018-05-01 | 安徽宏实光机电高科有限公司 | A kind of interlocking mechanism of switch cabinet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1783382A (en) * | 1999-09-10 | 2006-06-07 | Abb公司 | Method and device for interlocking |
| JP2006141797A (en) * | 2004-11-22 | 2006-06-08 | Matsushita Electric Works Ltd | Drawer apparatus |
| CN201656316U (en) * | 2010-04-19 | 2010-11-24 | 浙江容大电力设备制造有限公司 | Simple mechanical locking device of handcart type circuit breaker of switchgear cabinet |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112233928A (en) * | 2020-10-15 | 2021-01-15 | 中国船舶重工集团公司第七0四研究所 | Earthing switch operation interlock device in cable room of medium voltage switchgear |
| CN113783109A (en) * | 2021-09-08 | 2021-12-10 | 宁波九荣环保科技有限公司 | Motor variable frequency control cabinet of modularization assembly |
| CN113783109B (en) * | 2021-09-08 | 2024-05-24 | 宁波九荣环保科技有限公司 | Motor variable frequency control cabinet assembled in modularized mode |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108807039B (en) | 2019-08-30 |
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