CN2057036U - Key switch for preventing multiple power supplies from erroneous connection in parallel - Google Patents
Key switch for preventing multiple power supplies from erroneous connection in parallel Download PDFInfo
- Publication number
- CN2057036U CN2057036U CN 89213897 CN89213897U CN2057036U CN 2057036 U CN2057036 U CN 2057036U CN 89213897 CN89213897 CN 89213897 CN 89213897 U CN89213897 U CN 89213897U CN 2057036 U CN2057036 U CN 2057036U
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- CN
- China
- Prior art keywords
- key
- switch
- key switch
- power supplies
- parallel
- 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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- Switch Cases, Indication, And Locking (AREA)
Abstract
The utility model discloses a key switch for preventing multiple power supplies from erroneous connection in parallel, and the utility model relates to an interlocking device for preventing multiple power supplies from erroneous connection in parallel. The device is matched with the isolating switch of a high voltage switch cabinet and is suitable for preventing power supplies with the power of 35KV and less than 35KV from erroneous connection in parallel. The utility model reliably prevents multiple power supplies from erroneous connection in parallel and power transmission accident which are resulted from erroneous operation and is especially suitable for preventing two power supplies with the power of 10KV from erroneous connection in parallel. The device has the advantages of artful structure, firmness, high durability, convenient installation, and low cost.
Description
The utility model relates to the interlock of the anti-error parallel running of a kind of multiple power supplies---key switch.
This device cooperates the high-voltage board isolating switch to use, and is applicable to that 35KV and following high pressure multiple power supplies prevent the mistake parallel running.
Usually, when the two-way power supply need prevent the mistake parallel running, adopt heavy steel wire rope---pulley mechanical interlock mechanism, and need frequent the maintenance to adjust, very inconvenient.
Task of the present utility model provides a kind of delicate structure, and is sturdy and durable, easy for installation, can prevent mistake parallel running that causes owing to faulty operation and the novel interlock that send electrification effectively.
Task of the present utility model is that following mode is finished, and in conjunction with the accompanying drawings this device is described in detail.
Fig. 1 is the key switch structure chart.
Fig. 2 is an interlock work schematic diagram.
With reference to Fig. 1, key switch comprises: with material with good mechanical strength, and the housing (1) made of metal material for example, base plate (2) is inserted Xiao (3), and shift fork (4) is dialled rod (5), bolt (6), screw (7), lock core (8), key (9).
The operation principle of this device:
Key (9) inserts lock core (8), key (9), lock core (8) rotates thereupon, the shift fork (4) that is fixed together with lock core is stirred rod (5) and is moved along the long guiding hole on the base plate (2), dials rod (5) and drives slotting Xiao (3) who is fixed together with it and move along the hole, guiding garden on the housing (1).
Key switch is mounted on the high-voltage board isolator operation panel, with the isolating switch mating reaction, when high-voltage board isolating switch brake lever is left behind, when being in gate-dividing state, key makes inserts in Xiao (3) insertion isolating switch lock hole, at this moment and have only at this moment and just can take out key make isolating switch be in the locking gate-dividing state.
When multiple power supplies need prevent the mistake parallel running, can adopt a plurality of identical key switches, be contained in respectively on the isolator operation panel of every road power supply, only join key of person on duty.When this key being inserted on the key switch of one road power supply, just can only allow this road to close a floodgate, all the other each routes are opened key switch in no key can only be locked in gate-dividing state.During grid switching operation, the isolating switch brake lever that must leave behind earlier and be in "on" position, key makes inserts in Xiao (3) insertion isolating switch lock hole, takes out key.Remove to open the key switch of another road power supply that needs connection again with same key, the state that unlocks just allows to close a floodgate.So avoid the mistake parallel running reliably and sent the possibility of electrification.
A kind of embodiment of the present utility model is:
As Fig. 2, for the two-way power supply prevents mistake parallel running interlock, two same specification key switch a2, b2 is contained in respectively on the guidance panel of isolating switch a1, b1 of every road 10KV high-voltage board A, B, only joins key of person on duty.The present will be withdrawn from operation with the B road, and is put into operation in the A road, then person on duty's brake lever of B road isolating switch b1 of must leaving behind, make b1 be in gate-dividing state, key is inserted in the lock hole of isolating switch b1 slotting Xiao of key switch b2, makes it to be in latched position, could take out key.Same key inserted among the A road power supply key switch a2, and screw key makes slotting Xiao of a2 withdraw from the lock hole of isolating switch a1, unlocks, the slippage this moment brake lever of A road isolating switch a1, put into operation in the A road, key is retained among the key switch a2 of A road, can not take out.
Claims (3)
1, a kind of multiple power supplies that relates to prevents the interlock-key switch of parallel running by mistake.Comprise: housing (1), base plate (2), slotting Xiao (3), shift fork (4), group rod (5), bolt (6), screw (7), lock core (8), key (9).
It is characterized in that:
A, key (9) insert lock core (8), key (9), lock core (8) rotates thereupon, the shift fork (4) that is fixed together with lock core is stirred rod (5) and is moved along the long guiding hole on the base plate (2), dials rod (5) and drives slotting Xiao (3) who is fixed together with it and move along the hole, guiding garden on the housing (1).
B, this key switch cooperate the high-voltage board isolating switch to use, and install and use a mutual identical key switch on the panel of every road high-tension switch cabinet.
When slotting Xiao (3) of key switch inserts the isolating switch lock hole, stop brake lever to close.
When slotting Xiao (3) of key switch withdraws from the isolating switch lock hole, the brake lever of can slippaging.
C, a plurality of identical key switch only have a key made to fit the lock.
2,, it is characterized in that each parts is to make with the material with good mechanical strength, for example metal material by the described key switch of claim 1.
3, by claim 1 and 2 described key switches, it is characterized in that described multichannel high-voltage board isolating switch is 35KV and following, particularly the high-voltage board isolating switch of 10KV two-way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89213897 CN2057036U (en) | 1989-07-14 | 1989-07-14 | Key switch for preventing multiple power supplies from erroneous connection in parallel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89213897 CN2057036U (en) | 1989-07-14 | 1989-07-14 | Key switch for preventing multiple power supplies from erroneous connection in parallel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2057036U true CN2057036U (en) | 1990-05-09 |
Family
ID=4869773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89213897 Withdrawn CN2057036U (en) | 1989-07-14 | 1989-07-14 | Key switch for preventing multiple power supplies from erroneous connection in parallel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2057036U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522236A (en) * | 2011-12-20 | 2012-06-27 | 上海纳杰电气成套有限公司 | Anti-misoperation interlocking mechanism of prefabricated substation transformer chamber door |
| CN103236361A (en) * | 2013-03-28 | 2013-08-07 | 上海正昊电力科技有限公司 | Interlocking device |
| CN104576120A (en) * | 2014-12-31 | 2015-04-29 | 上海凯研机械设备有限公司 | Mechanical key unlocking system |
| CN105649770A (en) * | 2016-01-13 | 2016-06-08 | 厦门理工学院 | Interlocking device used for diesel power generation system and standby power supply of diesel power generation system |
-
1989
- 1989-07-14 CN CN 89213897 patent/CN2057036U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522236A (en) * | 2011-12-20 | 2012-06-27 | 上海纳杰电气成套有限公司 | Anti-misoperation interlocking mechanism of prefabricated substation transformer chamber door |
| CN102522236B (en) * | 2011-12-20 | 2014-07-09 | 上海纳杰电气成套有限公司 | Anti-misoperation interlocking mechanism of prefabricated substation transformer chamber door |
| CN103236361A (en) * | 2013-03-28 | 2013-08-07 | 上海正昊电力科技有限公司 | Interlocking device |
| CN103236361B (en) * | 2013-03-28 | 2015-04-15 | 上海正昊电力科技有限公司 | Interlocking device |
| CN104576120A (en) * | 2014-12-31 | 2015-04-29 | 上海凯研机械设备有限公司 | Mechanical key unlocking system |
| CN105649770A (en) * | 2016-01-13 | 2016-06-08 | 厦门理工学院 | Interlocking device used for diesel power generation system and standby power supply of diesel power generation system |
| CN105649770B (en) * | 2016-01-13 | 2018-12-28 | 厦门理工学院 | For diesel generating system and its interlock of backup power source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |