CN201041955Y - Dual power supply switching control device - Google Patents
Dual power supply switching control device Download PDFInfo
- Publication number
- CN201041955Y CN201041955Y CNU2007200222337U CN200720022233U CN201041955Y CN 201041955 Y CN201041955 Y CN 201041955Y CN U2007200222337 U CNU2007200222337 U CN U2007200222337U CN 200720022233 U CN200720022233 U CN 200720022233U CN 201041955 Y CN201041955 Y CN 201041955Y
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- power
- road
- power supply
- control circuit
- relay
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Abstract
The utility model relates to a dual-power switching control device used for providing double-circuit power for a power plant or other automatic control systems, and consists of a control circuit A and a control circuit B, and the two control circuits are the same. In control circuit A, the power inlet wire switches in an intermediate relay and the loops of two power relays through a power input protective switch, and then are connected with a plurality of power output protective switches respectively through a power filter. One normally closed contact of the power relay is connected with the output terminal of the power-losing alarm in control circuit A, and the other normally closed contact of the power relay is connected in series with the power relay in control circuit B, and then is connected with the output terminals of the power-losing alarm of the whole power switching case. Control circuit A and control circuit B are connected with each other through a terminal. When any circuit among the outputs of the utility model is short or connected with the ground, the protective switch of the circuit switches off, the normal work of the power switch is not affected and the power supply of the other four circuits are not affected, either. When the equipment in control circuit A or control circuit B is damaged, the intermediate connection can be switched off and the control case where the damaged equipment lies can be removed for examination and repair.
Description
Technical field
The utility model relates to a kind of switching control (a-b box) of double-cricuit supply being provided for GPA (microcomputer) control system, relates in particular to a kind of dual power switching control device that has improved.
Background technology
The dual power supply switching box of XDPS system of Shanghai Xinhua company, its circuit theory diagrams as shown in Figure 3, its inner capital equipment is: there are a mains switch SW1, auxiliary relay RL1, two power relay RL3 and RL5, two maintenance socket J1 and J2, power supply filter LB1, input and output terminal in the A road.The B road is the same with the A road, and a mains switch SW2, auxiliary relay RL2, two power relay RL4 and RL6, two maintenance socket J3 and J4, power supply filter LB2, input and output terminal are arranged.
Its operation principle: A road power supply meets uninterrupted power supply UPS, and B road power supply connects security personnel's section.Each road electric power incoming line inserts the coil of an auxiliary relay and two power relays.A road, this road power supply inserts the normal opened contact of this road auxiliary relay RL1 and the normally closed contact of B road, another road auxiliary relay RL2, the same connection in another road simultaneously.Power relay RL3, RL4 respectively have one road normally closed contact to report this road power supply dead electricity to report to the police, and respectively have the whole power supply a-b box dead electricity of one road normally closed contact series connection back newspaper to report to the police in addition.Under the normal condition, A, B two-way are powered simultaneously, start this road auxiliary relay and two power relays respectively, make their normal opened contact closures, and normally closed contact disconnects.A road power supply is delivered to lead-out terminal by the normal opened contact of this road auxiliary relay closure respectively, delivers to the normally closed contact of B road, another road auxiliary relay RL2 disconnection simultaneously and does standby switching usefulness.When A road power supply dead electricity, A road auxiliary relay RL1 dead electricity, normal opened contact disconnects, the normally closed contact closure, B road power supply gives for A road output by the normally closed contact of A road auxiliary relay RL1 closure.Normally closed junction closure during A road, this road alarm relay dead electricity sends A road, this road power supply dead electricity alarm signal.B road power work course of action is with the A road.
Former dual power supply switching box weak point: (1) five tunnel output (comprising socket) no short circuit or ground protection.One short out road is arranged in output loop in the A road, normal opened contact by auxiliary relay RL1 closure, cause the service entrance switch tripping operation of A road, auxiliary relay RL1 dead electricity, it is closed that normally closed contact recovers, short-circuit loop is the normally closed contact by auxiliary relay RL1 again, causes the service entrance switch tripping operation of B road, thereby causes the double loop dead electricity that all trips simultaneously.When one short out road was arranged in the output loop of B road, course of action was the same.(2) need overhaul when changing when a certain output institute carrying device, be inconvenient to cut off the power supply.(3) the two-way switching device is at same cabinet, and one tunnel fault is unfavorable for maintenance.
Summary of the invention
The purpose of this utility model provides can not trip the simultaneously dual power switching control device of dead electricity of a kind of double loop.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of dual power switching control device, it is characterized in that: comprising: A road control circuit and B road control circuit, A road control circuit comprises: power supply input protection switch SW 1, a plurality of power supply output protection switch SW 3, SW4, SW5, SW6, a power supply dead electricity warning lead-out terminal TM1, auxiliary relay RL1, two power relay RL3 and RL5, a power supply filter LB1; B road control circuit comprises: power supply input protection switch SW 2, a plurality of power supply output protection switch SW 7, SW8, SW9, SW10, a warning lead-out terminal TM2, auxiliary relay RL2, two power relay RL4 and RL6, a power supply filter LB2; In the control circuit of A road, electric power incoming line inserts the coil of an auxiliary relay RL1 and two power relay RL3 and RL5 by power supply input protection switch SW 1, meet a plurality of power supply output protection switch SW 3, SW4, SW5, SW6 respectively through power supply filter LB1 then, power relay RL3 has one road normally closed contact to meet A road power supply dead electricity warning lead-out terminal TM1, other one road normally closed contact with meet whole power supply a-b box dead electricity warning lead-out terminal TM1, TM2 respectively after power relay RL4 in the control circuit of B road connects; In the control circuit of B road; electric power incoming line inserts the coil of an auxiliary relay RL2 and two power relay RL4 and RL6 by power supply input protection switch SW 2; meet a plurality of power supply output protection switch SW 7, SW8, SW9, SW10 respectively through power supply filter LB2 then; power relay RL4 has one road normally closed contact to meet B road power supply dead electricity warning lead-out terminal TM1, other one road normally closed contact with meet whole power supply a-b box dead electricity warning lead-out terminal TM1, TM2 respectively after power relay RL3 in the control circuit of A road connects.
According to described dual power switching control device, it is characterized in that: connect by terminal TM or plug between described A road control circuit and the B road control circuit.
According to described dual power switching control device, it is characterized in that: be connected with maintenance socket J1, J2, J3, J4 in described A road control circuit and the B road control circuit respectively.
The beneficial effects of the utility model: when any one short out road or ground connection, this road protection switch or other fuses disconnect, and can not influence the operate as normal of mains switch SW1, SW2, also can not influence other power supplies of four tunnel in (1) output.(2) when the device damage in A road or the B road, connect in the middle of can disconnecting, pull down the control cabinet maintenance at device damage place.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model;
Fig. 2 is another kind of embodiment circuit theory diagrams of the present utility model;
Fig. 3 is the circuit theory diagrams of the dual power supply switching box in the utility model background technology.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
The utility model is to improve to form on the basis of the circuit theory diagrams of dual power supply switching box shown in Figure 3.
(1) changes former output loop four road lead-out terminals into protection switch (comprising other fuses), or on the basis that keeps lead-out terminal, before or after it, increase a protection switch (comprising other fuses).
(2) A, B two-way control appliance are divided into two control cabinets, install respectively, connect by terminal or plug between A road control circuit and the B road control circuit.
The utility model as shown in Figure 1, comprise: A road control circuit and B road control circuit, A road control circuit comprises: power supply input protection switch SW 1, a plurality of power supply output protection switch SW 3, SW4, SW5, SW6, a power supply dead electricity warning lead-out terminal TM1, auxiliary relay RL1, two power relay RL3 and RL5, a power supply filter LB1; B road control circuit comprises: power supply input protection switch SW 2, a plurality of power supply output protection switch SW 7, SW8, SW9, SW10, a warning lead-out terminal TM2, auxiliary relay RL2, two power relay RL4 and RL6, a power supply filter LB2; In the control circuit of A road, electric power incoming line inserts the coil of an auxiliary relay RL1 and two power relay RL3 and RL5 by power supply input protection switch SW 1, meet a plurality of power supply output protection switch SW 3, SW4, SW5, SW6 respectively through power supply filter LB1 then, power relay RL3 has one road normally closed contact to meet A road power supply dead electricity warning lead-out terminal TM1, other one road normally closed contact with meet whole power supply a-b box dead electricity warning lead-out terminal TM1, TM2 respectively after power relay RL4 in the control circuit of B road connects; In the control circuit of B road; electric power incoming line inserts the coil of an auxiliary relay RL2 and two power relay RL4 and RL6 by power supply input protection switch SW 2; meet a plurality of power supply output protection switch SW 7, SW8, SW9, SW10 respectively through power supply filter LB2 then; power relay RL4 has one road normally closed contact to meet B road power supply dead electricity warning lead-out terminal TM1, other one road normally closed contact with meet whole power supply a-b box dead electricity warning lead-out terminal TM1, TM2 respectively after power relay RL3 in the control circuit of A road connects.
Connect by terminal TM or plug between described A road control circuit and the B road control circuit.
Be connected with maintenance socket J1, J2, J3, J4 in described A road control circuit and the B road control circuit respectively.
Its operation principle: A road power supply meets uninterrupted power supply UPS, and B road power supply connects security personnel's section.Each road electric power incoming line inserts the coil of an auxiliary relay and two power relays.A road, this road power supply inserts the normal opened contact of this road auxiliary relay RL1 and the normally closed contact of B road, another road auxiliary relay RL2, the same connection in another road simultaneously.Power relay RL3, RL4 respectively have one road normally closed contact to report this road power supply dead electricity to report to the police, and respectively have the whole power supply a-b box dead electricity of one road normally closed contact series connection back newspaper to report to the police in addition.Under the normal condition, A, B two-way are powered simultaneously, start this road auxiliary relay and two power relays respectively, make their normal opened contact closures, and normally closed contact disconnects.A road power supply is delivered to the output protection switch by the normal opened contact of this road auxiliary relay closure respectively, delivers to the normally closed contact of B road, another road auxiliary relay RL2 disconnection simultaneously and does standby switching usefulness.When A road power supply dead electricity, A road auxiliary relay RL1 dead electricity, normal opened contact disconnects, the normally closed contact closure, B road power supply gives for A road output by the normally closed contact of A road auxiliary relay RL1 closure.Normally closed junction closure during A road, this road alarm relay dead electricity sends A road, this road power supply dead electricity alarm signal.B road power work course of action is with the A road.
Claims (3)
1. dual power switching control device, it is characterized in that: comprising: A road control circuit and B road control circuit, A road control circuit comprises: power supply input protection switch SW 1, a plurality of power supply output protection switch SW 3, SW4, SW5, SW6, a power supply dead electricity warning lead-out terminal TM1, auxiliary relay RL1, two power relay RL3 and RL5, a power supply filter LB1; B road control circuit comprises: power supply input protection switch SW 2, a plurality of power supply output protection switch SW 7, SW8, SW9, SW10, a warning lead-out terminal TM2, auxiliary relay RL2, two power relay RL4 and RL6, a power supply filter LB2; In the control circuit of A road, electric power incoming line inserts the coil of an auxiliary relay RL1 and two power relay RL3 and RL5 by power supply input protection switch SW 1, meet a plurality of power supply output protection switch SW 3, SW4, SW5, SW6 respectively through power supply filter LB1 then, power relay RL3 has one road normally closed contact to meet A road power supply dead electricity warning lead-out terminal TM1, other one road normally closed contact with meet whole power supply a-b box dead electricity warning lead-out terminal TM1, TM2 respectively after power relay RL4 in the control circuit of B road connects; In the control circuit of B road; electric power incoming line inserts the coil of an auxiliary relay RL2 and two power relay RL4 and RL6 by power supply input protection switch SW 2; meet a plurality of power supply output protection switch SW 7, SW8, SW9, SW10 respectively through power supply filter LB2 then; power relay RL4 has one road normally closed contact to meet B road power supply dead electricity warning lead-out terminal TM1, other one road normally closed contact with meet whole power supply a-b box dead electricity warning lead-out terminal TM1, TM2 respectively after power relay RL3 in the control circuit of A road connects.
2. dual power switching control device according to claim 1 is characterized in that: connect by terminal TM or plug between described A road control circuit and the B road control circuit.
3. dual power switching control device according to claim 1 and 2 is characterized in that: be connected with maintenance socket J1, J2, J3, J4 in described A road control circuit and the B road control circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200222337U CN201041955Y (en) | 2007-05-18 | 2007-05-18 | Dual power supply switching control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200222337U CN201041955Y (en) | 2007-05-18 | 2007-05-18 | Dual power supply switching control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201041955Y true CN201041955Y (en) | 2008-03-26 |
Family
ID=39253667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200222337U Expired - Fee Related CN201041955Y (en) | 2007-05-18 | 2007-05-18 | Dual power supply switching control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201041955Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969225A (en) * | 2010-11-01 | 2011-02-09 | 河南电力试验研究院 | Dual-circuit automatic mutual-switching power system without break points |
-
2007
- 2007-05-18 CN CNU2007200222337U patent/CN201041955Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969225A (en) * | 2010-11-01 | 2011-02-09 | 河南电力试验研究院 | Dual-circuit automatic mutual-switching power system without break points |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080326 Termination date: 20100518 |