CN2687815Y - Key interlocking device - Google Patents
Key interlocking device Download PDFInfo
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- CN2687815Y CN2687815Y CN 200420043909 CN200420043909U CN2687815Y CN 2687815 Y CN2687815 Y CN 2687815Y CN 200420043909 CN200420043909 CN 200420043909 CN 200420043909 U CN200420043909 U CN 200420043909U CN 2687815 Y CN2687815 Y CN 2687815Y
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Abstract
The utility model relates to an interlocking device which is suitable for the mutual locking among relevant equipment of generators, main change relevant equipment, change relevant equipment for factories, SFC relevant equipment, etc. which have little change of operating modes. The utility model comprises a key (1), a lock core (2), a lock case (3) and a limiting wheel group (4), wherein the limiting wheel group (4) comprises a plurality of wheel sheets with external convex cambered surfaces (41) and inner concave cambered surfaces (42), the lock core (2) is arranged in a lock hole of the limited wheel group (4), and the key (1) can be inserted in a key hole of the lock core (2). In the wheel sheets of the limiting wheel group (4), the opening of a rear wheel sheet is limited by a front wheel sheet. The utility model adopts mechanical type key interlocking structure. Thus, the utility model has the advantages of simple structure, reliable performance, convenient maintenance, low investment and obvious effect. The utility model is a key interlocking device with artful design, convenience, practicality and good safety performance.
Description
1, technical field:
The utility model is a kind of mutual locking that is applicable between the little equipment of changes of operating modes such as generator relevant device, main transformer relevant device, unit transformer relevant device, SFC relevant device, belongs to the innovative technology of locking device.
2, background technology:
Anti-misoperation locking device is to guarantee one of equipment safety operation important techniques measure for preventing that operations staff's misoperation from playing an important role, and it is very necessary that anti-misoperation locking device is set up in the power plant.Present domestic most of hydroelectric plant is in this part of generator-main transformer-unit transformer or locking device is not set, or the portion's locking device of only setting a trap, the microcomputer locking device is set, from the relevant paper that uses situation that power plant feeds back and " power safety technique " magazine to publish, this class locking device result of use is unsatisfactory.This cover block sytem at first requires the correct operation sequence of operations staff's analog input, and then carry out real operation, if operation is incorrect, the microcomputer locking device will not allow to continue to operate by barring program again, if this moment, the microcomputer locking device went wrong, blocking function is malfunctioning, allows operation to proceed, and will lead to misoperation fault.There is a logic " vicious circle " in design in microcomputer locking anti-misoperation apparatus, that is: locking device is used for preventing operations staff's misoperation, but the microcomputer locking device at first requires the operations staff to import correct operation sequence.In certain hydroelectric plant " 2.27 " great misoperation fault in 2003, the microcomputer block sytem is not brought into play the anti-misoperation function at crucial moment, wherein one of reason is exactly operations staff when not importing correct operation sequence, and the microcomputer locking device fails to discern effectively and locking in addition.In addition, microcomputer block sytem computer simulation screen is complicated, and the line service amount is big, and its cost performance is also lower, for example, certain hydroelectric plant that main electrical scheme is fairly simple, its microcomputer block sytem total price is 250,000 yuan of RMB, but its serviceability is not strong.
3, summary of the invention:
The purpose of this utility model is to overcome above-mentioned shortcoming and a kind of simple in structure, dependable performance, key inter lock easy to maintenance is provided.The utility model input ratio is less, and effect is remarkable, is applicable to the mutual locking between the little equipment of changes of operating modes, for example generator relevant device, main transformer relevant device, unit transformer relevant device, SFC relevant device etc.
Structural representation of the present utility model as shown in drawings, include key (1), lock core (2), lock box (3), restriction wheels (4), key (1), lock core (2), lock box (3), restriction wheels (4), wherein limit wheels (4) and include some wheel sheets of making outer convex globoidal (41) and inner concave arc surface (42), lock core (2) is installed in the lockhole of restriction wheels (4), and key (1) can insert in the keyhole of lock core (2).
The some of above-mentioned restriction wheels (4) take turns in the sheet, and back one unlatching of taking turns sheet is subjected to the restriction of previous round sheet.
The some of above-mentioned restriction wheels (4) take turns in the sheet, and the outer convex globoidal restriction of the unlatching of sheet by the previous round sheet taken turns in back one.
The some of above-mentioned restriction wheels (4) take turns in the sheet, and the first individual wheel of sheet and the end sheet of taking turns is provided with an inner concave arc surface (42).
The some of above-mentioned restriction wheels (4) take turns in the sheet, take turns sheet except that first all the other of taking turns a sheet and the end wheel sheet and are equipped with two inner concave arc surfaces (42).
The utility model adopts the structure of mechanical type key interlocking, and therefore, it is not only simple in structure, dependable performance, easy to maintenance, and less input, and effect is remarkable.The utility model is applicable to the mutual locking between the little equipment of changes of operating modes, for example generator relevant device, main transformer relevant device, unit transformer relevant device, SFC relevant device etc.The utility model is that a kind of design is ingenious, convenient and practical, and the good key inter lock of fail safe.
4, description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model restriction wheels (4);
Fig. 3 is the blocking figure of the utility model restriction wheels (4) before rotation;
Fig. 4 is the utility model restriction wheels (4 unlocking condition figure after rotation;
Fig. 5-1 is installed in the structural representation of drawer type cabinet for the utility model;
Fig. 5-2 is the vertical view of Fig. 5-1;
Fig. 5-3 is installed in the structural representation of trolley type switch for the utility model;
Fig. 5-4 is the vertical view of Fig. 5-3;
Fig. 6 is the logic relation picture of the utility model embodiment 1 key block sytem;
Fig. 7 is the operational flowchart of the utility model embodiment 1;
Fig. 8 is the logic relation picture of the utility model embodiment 2 key block sytems;
Fig. 9 is the logic relation picture of the utility model embodiment 3 key block sytems;
Figure 10 is the logic relation picture of the utility model embodiment 4 key block sytems.
5, embodiment:
Embodiment 1:
Structural representation of the present utility model as shown in Figure 1, 2, include key (1), lock core (2), lock box (3), restriction wheels (4), key (1), lock core (2), lock box (3), restriction wheels (4), wherein limit wheels (4) and include some wheel sheets of making outer convex globoidal (41) and inner concave arc surface (42), lock core (2) is installed in the lockhole of restriction wheels (4), and key (1) can insert in the keyhole of lock core (2).The some of above-mentioned restriction wheels (4) take turns in the sheet, and back one unlatching of taking turns sheet is subjected to the restriction of previous round sheet.In the present embodiment, the some of above-mentioned restriction wheels (4) take turns in the sheet, and the outer convex globoidal restriction of the unlatching of sheet by the previous round sheet taken turns in back one.The some of above-mentioned restriction wheels (4) take turns in the sheet, and the first individual wheel of sheet and the end sheet of taking turns is provided with an inner concave arc surface (42), take turns sheet except that first all the other of taking turns a sheet and the end wheel sheet and are equipped with two inner concave arc surfaces (42).
Key B is the key of opening device lock among Fig. 1, and the seam weldering of A, B key connecting ring is dead, hangs with two numbering key cards on the key.Lock core adopts stainless steel material to make, and can extract after its key revolves and turn 90 degrees.Lock box adopts than the corrosion resistant plate of book and makes, and operation instruction is posted in the lock box top, indicates each key direction of making a return journey with two the numbering.The restriction wheels adopt thicker corrosion resistant plate to make.
The operation principle of restriction wheels is: previous action finishes, take key S1, inserting the dextrorotation of S1 lock core turn 90 degrees, driving the dextrorotation of S1 wheel turn 90 degrees, then the recess of S1 wheel is taken turns over against S2, and S2 wheel agretope is disengaged, and its key is extracted after can being rotated counterclockwise 90 degree, S3, S4 key are extracted after in like manner being rotated counterclockwise 90 degree successively, continue next step procedure operation.
The installation site of locking device can be arranged on following place:
1, unit control panel cabinet
Be provided with unit starting locking master key cashier's office in a shop at the unit control panel, in case place " LOCK OUT " position, then any start-up operation order is not accepted by unit.
2, shell is furnished with the electric equipment of door
The part electric equipment is equipped with protecting sheathing; for example generator wind-tunnel, reactor protecting wire net, dry excitation transformer cabinet, dry type station transformer cabinet, capacitor panel, neutral point disconnecting link cabinet etc.; because the protecting sheathing of these electric equipments is furnished with door, then can install door lock.
3, disconnecting link
For example commutation disconnecting link, the pump operating mode locking key that starts/drag disconnecting link is installed in control panel cashier's office in a shop, extracts after turning 90 degrees in case revolve, and has promptly cut off the control power supply.After checking that disconnecting link has drawn back, operation switching handle is cashier's office in a shop cut to " maintenance " position, got final product the opening operation power supply, shown in locking then.
4, drawer type cabinet
For example generator outlet single-phase type PT cabinet, excitation power supply switch cabinet draw/shake to " maintenance " position and lock, shown in Fig. 5-1, Fig. 5-2.
5, trolley type switch
For example 6KV trolley type switch, 18KV trolley type switch, the trolley type switch is pulled to " maintenance " position after, pull-up is locked after being located at the baffle plate of switch cubicle bottom, the trolley type switch can not be pushed, shown in Fig. 5-3, Fig. 5-4.
Use for the convenience of the user, the key block sytem of being made up of key inter lock should have the operating instruction indication plate, the operating instruction indication plate is used for representing that the displacement between each operating procedure locking key concerns, is attached to by the corresponding interlock, for operation provides guidance.Its material should be stainless steel.
Key inter lock should be equipped with a cover master and use key, and three cover standby keys should be provided simultaneously, and wherein a cover is used for the cooperation maintenance of unit isolation back, test use, and a separate set of replenishes when the master damages with key or loses as forever standby.
In addition, inspection hole or observation window are set, are convenient to operation, maintainer's examination and maintenance at important, the key position of key interlock.
Now isolating station-service 18KV/6KV main transformer with certain is example, and the concrete enforcement of the electric equipment anti-misoperation key block sytem of being made up of key inter lock is described.
The state of (normally in service) as shown in Figure 6 before station-service 18KV/6KV main transformer was isolated, key inter lock 1 and key inter lock 2 totally two key kit interlocks wherein are housed, in key inter lock 1, available key D1 displaces key D2, D3, in key inter lock 2, available key H, I displace six key J, K, L, M, N, O.
Station-service 18KV/6KV main transformer isolated operation flow chart as shown in Figure 7.
From the isolated operation flow chart as seen, as desire on 18kV/6kV station-service main transformer, to work, then must obtain around the station-service main transformer shell six keys on the door and open the cabinet door, the door of opening shell can touch coil and iron core: as desire to obtain this six key J, K, L, M, N, O, then must obtain the key H that removes interlocking, I: as desire to obtain key H, I, then must input may send electric both sides switch CB1 to the job site, the ground cutter of CB2: drop into both sides switch CB1 as desire, the ground cutter of CB2, then must at first disconnect the switch CB1 of both sides, CB2, and pull out the dish cabinet, alternately remove the ground cutter locking of offside switch with the gained key.So all linked with one another, progressive, as long as middle have arbitrary link misoperation to occur, then next step operation can not go on promptly by locking again.
The step of removing isolated operation is opposite with said sequence.Key D3 in the isolated operation flow chart is the locking key of motor generator excitation transformer part, need not herein.
Embodiment 2:
The logic relation picture that the high pressure factory that is made up of key inter lock becomes the key block sytem as shown in Figure 8, switch represents that with the dotted line of ground cutter switch and ground cutter have inner latching relation among the figure, not within key block sytem scope.
Sky circle in the key displacement represents to insert key, inserts empty circle with previous step gained key, can displace the required locking key of next step operation from black circle.The sequence number that marks among the figure 1. 2. 3. ... represent the pairing operating position of each operating procedure, promptly operating procedure 1) pairing operating position is in 1. institute target position, so analogizes.
Its operating procedure is as follows:
1) pulls out CB1, CB2 to overhauling the position, get 1 this switch of key locking and can not be pushed into the service position again;
2) key 1. is replaced as 2, wherein 1 is used for other corresponding main transformer isolating closing lock key;
3) pull out CB3 to overhauling the position, get 1 this switch of key locking and can not be pushed into the service position again;
4) by 2. 21 keys that adds 3., displace CB1-Q8 ground cutter locking key;
5) use 4. gained key releasing CB1-Q8 ground cutter latching relation, the CB1-Q8 ground cutter that closes is locked in closed position again, gets 1 locking key;
6) use 5. gained key releasing CB2-Q8 ground cutter latching relation, the CB2-Q8 ground cutter that closes is locked in closed position again, gets 1 locking key;
7) use 6. gained key releasing CB3-Q8 ground cutter latching relation, the CB3-Q8 ground cutter that closes is locked in closed position again, gets 1 locking key;
8) displace each cabinet door key of transformer with 7. gained key, in order to open each cabinet door of transformer;
Embodiment 3:
Press logic relation picture that factory becomes the key block sytem as shown in Figure 9 among the typical case who is made up of key inter lock, switch represents that with the dotted line of ground cutter switch and ground cutter have inner latching relation among the figure, not within key block sytem scope.
Sky circle in the key displacement represents to insert key, inserts empty circle with previous step gained key, can displace the required locking key of next step operation from black circle.The sequence number that marks among the figure 1. 2. 3. ... represent the pairing operating position of each operating procedure, promptly operating procedure 1) pairing operating position is in 1. institute target position, so analogizes.
Its operating procedure is as follows:
1) pulls out CB1 to overhauling the position, get 1 this switch of key locking and can not be pushed into the service position again;
2) pull out CB2 to overhauling the position, get 1 this switch of key locking and can not be pushed into the service position again;
1. and 2 keys 2. 3) by, remove CB1-Q8 ground cutter locking, the CB1-Q8 ground cutter that closes, and be locked in closed position must 1 key;
4) use 1 key 3. to displace each cabinet door key of transformer, open each cabinet door of transformer.
Embodiment 4:
The logic relation picture of static frequency convertor SFC key block sytem as shown in figure 10, among the figure switch with ground cutter dotted line represent switch with ground cutter inner latching relation is arranged, not within key block sytem scope.
Sky circle among the figure in the key displacement represents to insert key, inserts empty circle with previous step gained key, can displace the required locking key of next step operation from black circle.The sequence number that marks among the figure 1. 2. 3. ... represent the pairing operating position of each operating procedure, promptly operating procedure 1) pairing operating position is in 1. institute target position, so analogizes.
Its operating procedure is as follows:
1) extracts the total locking key of SFC cashier's office in a shop at the SFC dish;
2) pulling out CB1, CB2 to overhauling the position, each get 1 key, this switch of locking can not be pushed into the service position again;
3) respectively key 2. is replaced as 2, wherein 1 is used for other corresponding main transformer isolating closing lock key;
4) pull out CB3 to overhauling the position, get 1 this switch of key locking and can not be pushed into the service position again;
5) key 4. is replaced as 2, wherein 1 is used for other corresponding startup bus I section isolating closing lock key;
6) with 1., 3. and 5. displacing CB3-Q8 ground cutter locking key;
7) remove CB1-Q8 ground cutter latching relation with key 6., the CB1-Q8 ground cutter that closes, and be locked in closed position, get 1 locking key;
8) remove CB2-Q8 ground cutter latching relation with key 7., the CB2-Q8 ground cutter that closes, and be locked in closed position, get 1 locking key;
9) remove CB3-Q8 ground cutter latching relation with key 8., the CB3-Q8 ground cutter that closes, and be locked in closed position, get 1 locking key;
10) use key 9. to displace each cabinet door key of SFC, transformer and reactor, in order to open each cabinet door;
Claims (5)
1, a kind of novel key interlock, it is characterized in that including key (1), lock core (2), lock box (3), restriction wheels (4), key (1), lock core (2), lock box (3), restriction wheels (4), wherein limit wheels (4) and include some wheel sheets of making outer convex globoidal (41) and inner concave arc surface (42), lock core (2) is installed in the lockhole of restriction wheels (4), and key (1) can insert in the keyhole of lock core (2).
2, novel key interlock according to claim 1 is characterized in that the some of above-mentioned restriction wheels (4) take turns in the sheet, and back one unlatching of taking turns sheet is subjected to the restriction of previous round sheet.
3, novel key interlock according to claim 2 is characterized in that the some of above-mentioned restriction wheels (4) take turns in the sheet, and the outer convex globoidal restriction of the unlatching of sheet by the previous round sheet taken turns in back one.
4, according to claim 1 or 2 or 3 described novel key interlocks, it is characterized in that the some of above-mentioned restriction wheels (4) take turns in the sheet, the first individual wheel of sheet and the end sheet of taking turns is provided with an inner concave arc surface (42).
5, according to claim or 4 described novel key interlocks, it is characterized in that the some of above-mentioned restriction wheels (4) take turns in the sheet, take turns sheet except that first all the other of taking turns a sheet and the end wheel sheet and be equipped with two inner concave arc surfaces (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420043909 CN2687815Y (en) | 2004-03-23 | 2004-03-23 | Key interlocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420043909 CN2687815Y (en) | 2004-03-23 | 2004-03-23 | Key interlocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2687815Y true CN2687815Y (en) | 2005-03-23 |
Family
ID=34671787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420043909 Expired - Lifetime CN2687815Y (en) | 2004-03-23 | 2004-03-23 | Key interlocking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2687815Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457167A (en) * | 2013-09-02 | 2013-12-18 | 国家电网公司 | Method for achieving misoperation-preventive locking of electric generator by using ABB disconnecting link for switching keys |
| CN105870971A (en) * | 2016-05-31 | 2016-08-17 | 中国能源建设集团广东省电力设计研究院有限公司 | Anti-misoperation locking system and method for power plant |
| CN113250534A (en) * | 2021-05-26 | 2021-08-13 | 珠海格力精密模具有限公司 | Control device and control method for safety door lock of automatic production line |
-
2004
- 2004-03-23 CN CN 200420043909 patent/CN2687815Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457167A (en) * | 2013-09-02 | 2013-12-18 | 国家电网公司 | Method for achieving misoperation-preventive locking of electric generator by using ABB disconnecting link for switching keys |
| CN103457167B (en) * | 2013-09-02 | 2016-05-18 | 国家电网公司 | Utilize ABB disconnecting link switching key to realize the method for generator anti-misoperation locking |
| CN105870971A (en) * | 2016-05-31 | 2016-08-17 | 中国能源建设集团广东省电力设计研究院有限公司 | Anti-misoperation locking system and method for power plant |
| CN113250534A (en) * | 2021-05-26 | 2021-08-13 | 珠海格力精密模具有限公司 | Control device and control method for safety door lock of automatic production line |
| CN113250534B (en) * | 2021-05-26 | 2022-04-22 | 珠海格力精密模具有限公司 | Control device and control method for safety door lock of automatic production line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140323 Granted publication date: 20050323 |