CN102386675A - Automatic changeover switch - Google Patents
Automatic changeover switch Download PDFInfo
- Publication number
- CN102386675A CN102386675A CN2011103801309A CN201110380130A CN102386675A CN 102386675 A CN102386675 A CN 102386675A CN 2011103801309 A CN2011103801309 A CN 2011103801309A CN 201110380130 A CN201110380130 A CN 201110380130A CN 102386675 A CN102386675 A CN 102386675A
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- Prior art keywords
- power supply
- switch
- stand
- controller
- over
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Keying Circuit Devices (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention discloses an automatic changeover switch. The automatic changeover switch comprises an actuating mechanism, a driving device, a controller, as well as a frequently-used power supply executing switch and a stand-by power supply executing switch which are respectively connected with a frequently-used power supply and a stand-by power supply, wherein the controller is electrically connected with the driving device; the driving device drives the actuating mechanism to control the closing and the opening of the frequently-used power supply executing switch and the stand-by power supply executing switch according to the control commands of the controller, so as to achieve automatic changeover between the frequently-used power supply executing switch and the stand-by power supply executing switch; the frequently-used power supply executing switch, as well as the stand-by power supply executing switch, is provided with at least one auxiliary contact terminal connected with the controller, and the controller can obtain the closing/opening states of the frequently-used power supply executing switch and the stand-by power supply executing switch according to the signals of the auxiliary contact terminal; the automatic changeover switch further comprises at least one detection device connected with the controller, and a triggering device; and the triggering device acts when the automatic changeover switch is positioned in a dual division position. The invention can avoid the problem of short circuit of double power supplies in case of the breakdown of the automatic changeover switch.
Description
Technical field
The present invention relates to a kind of automatic change-over, belong to the low-voltage electrical technology.
Background technology
Automatic change-over is mainly used in important power supply place, when one road power supply goes wrong and can not continue as the load equipment power supply and the time switch to another road power supply, thus the operate as normal of proof load equipment.In the handoff procedure of automatic change-over, in order to prevent to carry out the short circuit that the switch misoperation causes the two-way power supply, at present; The part automatic change-over only has mechanical interlocks; When mechanical interlocks made mechanical interlocks lose efficacy because of mechanical reason or circuit breaker handle fracture, automatic change-over can't break off the execution switch through the handle of carrying out switch, if this moment one road power supply is switched to another road power supply; The two-way power supply is short-circuited, produces great accident.In view of this; Existing automatic change-over has increased electrical interlocks on the basis of mechanical interlocking, but this electrical interlock is in-problem, and it can only guarantee automatic change-over not closed simultaneously two-way power supply in normal running; When automatic change-over self goes wrong; As carry out that switch knob fractures or when carrying out switch contact and sticking together, automatic change-over can't break off the execution switch through the handle of carrying out switch, if this moment one road power supply is switched to another road power supply; The two-way power supply is short-circuited, produces great accident and economic loss.Equally, when the contact of carrying out switch sticks together, also same problem can appear.
Summary of the invention
Technical problem to be solved by this invention is to overcome the existing in prior technology potential safety hazard; A kind of automatic change-over is provided; When there was fault (for example carry out switch knob fractures or contact adhesion) in automatic change-over self, the continuation that can stop change action was automatically carried out.
Automatic change-over of the present invention comprises operating mechanism, drive unit, controller, and the power supply commonly used that is connected with commonly used, stand-by power supply is respectively carried out switch, stand-by power supply is carried out switch; Controller is electrically connected with drive unit; Drive unit drives operating mechanism control power supply commonly used according to the control command of controller and carries out the branch that closes that switch and stand-by power supply are carried out switch, realizes using always, the automatic conversion between the stand-by power supply; Said power supply commonly used is carried out switch and is had the auxiliary contact that at least one is connected with said controller respectively with stand-by power supply execution switch, and controller can be carried out closing/minute state of switch according to said auxiliary contact signal acquisition power supply execution switch commonly used and stand-by power supply; It is characterized in that said automatic change-over also comprises the checkout gear that at least one is connected with said controller, and a trigger equipment; Said trigger equipment triggers said checkout gear and moves when automatic change-over is in two branchs position.
Preferably, said checkout gear and trigger equipment all are arranged on the operating mechanism.
Preferably, said drive unit is a reversible electric machine, and said checkout gear is a sensitive switch.
Further, said operating mechanism comprises:
Left slider and right slide block, be respectively applied for drive power supply commonly used and carry out switch and close with stand-by power supply execution switch/minute;
Rotating disk, it is connected with said reversible electric machine and can under reversible electric machine drives, rotates;
Left slider driving shaft, right slide block driving shaft are individually fixed in said rotating disk both sides;
Said trigger equipment is arranged on the rotating disk, and when rotating disk goes to automatic change-over when being in two branchs position, this trigger equipment triggers said sensitive switch and moves.
Adopt above optimal technical scheme can improve the reliability of automatic change-over of the present invention.
The controller of above-mentioned automatic change-over can obtain the actual branch state that closes that power supply commonly used is carried out switch and stand-by power supply execution switch through the auxiliary contact signal in real time; And combine the sensitive switch signal to judge whether automatic change-over itself breaks down; The power supply commonly used that need break off when in transfer process, receiving the triggering signal of sensitive switch is carried out switch or stand-by power supply and is carried out the switch auxiliary contact and still be closure state; Explain that the power supply execution switch commonly used or the stand-by power supply execution switch self that need to break off have produced faults such as handle fractures, contact adhesion; Then controller is controlled reversible electric machine immediately and is quit work; Thereby prevent under the situation that power supply/stand-by power supply commonly used do not break off the accident of stand-by power supply/two-way power supply short circuit that power connection commonly used is produced.
Description of drawings
Fig. 1 is an automatic change-over schematic diagram of the present invention;
Fig. 2 is the two position views that divide of automatic change-over of the present invention.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated:
A preferred embodiment of automatic change-over of the present invention; Like Fig. 1, shown in Figure 2, comprise that be connected with power supply Un commonly used, stand-by power supply Ur respectively two commonly used, stand-by power supplies carry out switch Qn, Qr, operating mechanism 4, reversible electric machine 9, controller 6 and power supply commonly used is installed is carried out the base plate 3 that switch Qn, stand-by power supply carry out switch Qr, operating mechanism 4, reversible electric machine 9 and controller 6; Operating mechanism 4 comprises a sensitive switch 41, rotating disk 42, left slider 43, right slide block 44, and left slider driving shaft 45, right slide block driving shaft 46, and it is protruding 421 that rotating disk 42 is provided with rotating disk, and sensitive switch 41 is connected with controller 6 signals; Commonly used, stand-by power supply is carried out switch (Qn, Qr) and is had at least one auxiliary contact that is electrically connected with controller 6 (Fn, Fr) respectively.Controller 6 detects power supply Un commonly used; The voltage signal of stand-by power supply Ur; Be used for judging overvoltage, under-voltage or decompression commonly used, stand-by power supply (Un, Ur); Detect auxiliary contact (Fn, Fr) signal commonly used, that stand-by power supply is carried out switch (Qn, Qr);, stand-by power supply normal to obtain carried out the closing of switch (Qn, Qr), branch state, detects the signal of sensitive switch 41 simultaneously, again after logic determines through reversible electric machine 9 drive that operating mechanisms 4 controls are normal, stand-by power supply execution switch (Qn, Qr) close branch.
As shown in Figure 2; The rotation of the controller 6 control reversible electric machines 9 of automatic change-over; The axle 91 of reversible electric machine 9 drives rotating disk 42 and rotates, and the left slider driving shaft 45 on the rotating disk 42 drives left slider 43 and controls the lever operated of power supply execution switch Qn commonly used, thereby control power supply commonly used is carried out the branch that closes of switch Qn; Right slide block driving shaft 46 on the rotating disk 42 drives right slide block 44 control stand-by power supplies and carries out the lever operated of switch Qr, thereby the control stand-by power supply is carried out the branch that closes of switch Qr.
Automatic change-over has three positions; Position promptly commonly used; Two minutes positions; The spare space, under the automatic change-over non-failure conditions, it is that state, the stand-by power supply that closes carried out the state of switch for dividing that the corresponding power supply commonly used in the position commonly used of automatic change-over is carried out switch; The two minutes corresponding power supplys commonly used in position are carried out switch and are carried out the state of switch for dividing for state, the stand-by power supply of branch, and it is the state that closes that the corresponding power supply execution switch commonly used in spare space is carried out switch for the state, the stand-by power supply that divide.But when failure conditions such as handle fracture occurring when automatic change-over; It is that state, the stand-by power supply that closes carried out the state of switch for branch that two branch positions corresponding power supply commonly used of possibility of automatic change-over is carried out switch, and it is the state that closes for state, the stand-by power supply execution switch that divides that perhaps corresponding power supply commonly used is carried out switch.
For example carry out switch Qn when power supply commonly used and be in closing position, stand-by power supply is carried out switch Qr and is in the separating brake position, as if power supply Un overvoltage commonly used this moment, under-voltage or decompression; Controller 6 detects power supply Un overvoltage commonly used, under-voltage or decompression; Drive operating mechanism 4 through reversible electric machine 9 and attempt disjunction power supply execution commonly used switch Qn, but fracture, still be in "on" position and use power supply execution switch Qn always as if the handle that this moment, power supply commonly used was carried out switch Qn; Can't use the separating brake that power supply is carried out switch Qn always through handle again this moment; But rotating disk 42 still can rotate under the drive of reversible electric machine 9, in this case, and when rotating disk 42 forwards centre position (shown position to; Be two branch positions of automatic change-over, this moment, corresponding power supply execution switch Qn commonly used still carried out the state of switch Qr for dividing for the state, the stand-by power supply that close.) time when depressing sensitive switch 41 through rotating disk protruding 421, it is closure signal that controller 6 detects the auxiliary contact Fn signal that power supply commonly used carries out switch Qn, when sensitive switch 41 signals also are closure signal; Then interrupt the power supply of reversible electric machine 9 immediately; No longer rotate, do not carry out the closing operation that stand-by power supply is carried out switch Qr, prevented effectively that stand-by power supply from carrying out that switch closes a floodgate and short circuit that the two-way power supply occurs toward subsequent use direction; Controller 6 carries out fault alarm simultaneously, reminds user processing.Otherwise; Carry out switch Qr when stand-by power supply and be in closing position, power supply commonly used is carried out switch Qn and is in the separating brake position, if the under-voltage or overvoltage of stand-by power supply Ur this moment; When controller 6 detects stand-by power supply and carries out the closure signal of closure signal and sensitive switch 41 of auxiliary contact Fr of switch Qr; Can interrupt the power supply of reversible electric machine 9 equally, no longer rotate, prevent effectively that power supply commonly used from carrying out that switch closes a floodgate and short circuit that the two-way power supply occurs toward direction commonly used; Controller 6 carries out fault alarm simultaneously, reminds user processing.Transfer process when main contact normal, that stand-by power supply is carried out switch (Qn, Qr) sticks together is identical with the transfer process that above-mentioned execution switch knob fractures, and repeats no more here.
Claims (5)
1. an automatic change-over comprises operating mechanism, drive unit, controller, and the power supply commonly used that is connected with commonly used, stand-by power supply is respectively carried out switch, stand-by power supply is carried out switch; Controller is electrically connected with drive unit; Drive unit drives operating mechanism control power supply commonly used according to the control command of controller and carries out the branch that closes that switch and stand-by power supply are carried out switch, realizes using always, the automatic conversion between the stand-by power supply; Said power supply commonly used is carried out switch and is had the auxiliary contact that at least one is connected with said controller respectively with stand-by power supply execution switch, and controller can be carried out closing/minute state of switch according to said auxiliary contact signal acquisition power supply execution switch commonly used and stand-by power supply; It is characterized in that said automatic change-over also comprises the checkout gear that at least one is connected with said controller, and a trigger equipment; Said trigger equipment triggers said checkout gear and moves when automatic change-over is in two branchs position.
2. automatic change-over according to claim 1 is characterized in that said checkout gear and trigger equipment all are arranged on the operating mechanism.
3. automatic change-over according to claim 1 is characterized in that said drive unit is a reversible electric machine, and said checkout gear is a sensitive switch.
4. like the said automatic change-over of claim 3, it is characterized in that said operating mechanism comprises:
Left slider and right slide block, be respectively applied for drive power supply commonly used and carry out switch and close with stand-by power supply execution switch/minute;
Rotating disk, it is connected with said reversible electric machine and can under reversible electric machine drives, rotates;
Left slider driving shaft, right slide block driving shaft are individually fixed in said rotating disk both sides;
Said trigger equipment is arranged on the rotating disk, and when rotating disk goes to automatic change-over when being in two branchs position, this trigger equipment triggers said sensitive switch and moves.
5. like the said automatic change-over of claim 4, it is characterized in that said trigger equipment is the convexity that is arranged on the said rotating disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110380130.9A CN102386675B (en) | 2011-11-25 | 2011-11-25 | Automatic changeover switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110380130.9A CN102386675B (en) | 2011-11-25 | 2011-11-25 | Automatic changeover switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102386675A true CN102386675A (en) | 2012-03-21 |
| CN102386675B CN102386675B (en) | 2014-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110380130.9A Active CN102386675B (en) | 2011-11-25 | 2011-11-25 | Automatic changeover switch |
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| Country | Link |
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| CN (1) | CN102386675B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845519A (en) * | 2017-12-04 | 2018-03-27 | 常熟开关制造有限公司(原常熟开关厂） | Double power supply automatic transfer switch and its control method |
| CN110211821A (en) * | 2019-03-21 | 2019-09-06 | 杭州之江开关股份有限公司 | A kind of operating mechanism and its switching control method of automatic change-over |
| CN111785548A (en) * | 2019-04-04 | 2020-10-16 | 施耐德电器工业公司 | Electrical interlocking of dual-power automatic transfer switch and dual-power automatic transfer switch |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783252A (en) * | 2009-01-16 | 2010-07-21 | 西门子公司 | Automatic transfer switching electric appliance and method for judging and treating failure thereof |
-
2011
- 2011-11-25 CN CN201110380130.9A patent/CN102386675B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783252A (en) * | 2009-01-16 | 2010-07-21 | 西门子公司 | Automatic transfer switching electric appliance and method for judging and treating failure thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845519A (en) * | 2017-12-04 | 2018-03-27 | 常熟开关制造有限公司(原常熟开关厂） | Double power supply automatic transfer switch and its control method |
| CN110211821A (en) * | 2019-03-21 | 2019-09-06 | 杭州之江开关股份有限公司 | A kind of operating mechanism and its switching control method of automatic change-over |
| CN111785548A (en) * | 2019-04-04 | 2020-10-16 | 施耐德电器工业公司 | Electrical interlocking of dual-power automatic transfer switch and dual-power automatic transfer switch |
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| Publication number | Publication date |
|---|---|
| CN102386675B (en) | 2014-01-29 |
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