CN204316180U - Dual-power automatic switching water supply equipment control system - Google Patents
Dual-power automatic switching water supply equipment control system Download PDFInfo
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- CN204316180U CN204316180U CN201420861010.XU CN201420861010U CN204316180U CN 204316180 U CN204316180 U CN 204316180U CN 201420861010 U CN201420861010 U CN 201420861010U CN 204316180 U CN204316180 U CN 204316180U
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- contactor
- control system
- pump motor
- supply equipment
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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
Abstract
The utility model discloses Dual-power automatic switching water supply equipment control system, comprise pump motor, control system, in described circuit, be provided with main power source, stand-by power supply; Described control system accesses two the first A.C. contactor, the second A.C. contactors in parallel in power supply loop; Termination main power source on the first described A.C. contactor, termination stand-by power supply on the second A.C. contactor, the first A.C. contactor, the second A.C. contactor posterior end in parallel and pump motor are connected in series.This control system achieves duplicate supply handoff functionality standby mutually while guarantee secondary water-supply equipment normally runs, thus ensure that secondary water-supply equipment continuous duty.Only increase by two A.C. contactors and the time relay, structure is simple, economical and practical.
Description
Technical field
The technical program relates to water supply equipment control system technical field, specifically secondary water-supply equipment duplicate supply is mutually for the control system of handoff functionality, for ensureing that secondary water-supply equipment realizes automatic switchover, continuous operation under the duplicate supply of main power source, stand-by power supply.
Background technology
At present, known secondary water-supply control system is joined by Connecting groups such as circuit breaker, A.C. contactor, thermal relay, frequency converter, pressure sensor, PLC central processing unit and button indicating lamps to form.After power circuit breaker is connected, PLC central controller is by the difference of the pressure set points in computing system and pressure sensor actual measured value, then automatically output signal to frequency converter and adjust its frequency, thus supply-water pump rotating speed is changed with the Differential Output of assure feed water pressure.General secondary water-supply control system only possesses single supply access function, do not possess two-way power supply access function mutually, the application can not cut off the water in some requirements such as hospital, fire-fighting once power failure, thus makes secondary water-supply equipment normally run, and can not meet the demand of application.
Utility model content
The technical problems to be solved in the utility model is to provide Dual-power automatic switching water supply equipment control system, this control system possesses two-way power supply access function mutually, the application can not cut off the water in some requirements such as hospital, fire-fighting is once main power source breaks down, initiatively be switched to stand-by power supply and make secondary water-supply equipment continuous service, meet the water demand of user.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
Dual-power automatic switching water supply equipment control system, comprises pump motor, control system, is provided with main power source, stand-by power supply in described circuit; Described control system accesses two the first A.C. contactor, the second A.C. contactors in parallel in power supply loop; Termination main power source on the first described A.C. contactor, termination stand-by power supply on the second A.C. contactor, the first A.C. contactor, the second A.C. contactor posterior end in parallel and pump motor are connected in series.
Main power source A connects coil one end of the first A.C. contactor, and another terminal connecting zero line of coil, the normally closed auxiliary contact of the first A.C. contactor is connected in the coil of the time relay, and the coil power of the time relay gets the A phase of stand-by power supply.When main power source has electricity, the first A.C. contactor adhesive, three phase mains delivers to supply-water pump power circuit breaker by main contacts.
When main power source dead electricity, the first A.C. contactor normally closed auxiliary contact closes, and the time relay starts the timing that is energized, and delay time reaches the adhesive of rear drive second A.C. contactor, and stand-by power supply delivers to supply-water pump power circuit breaker by main contacts.Another group normally closed auxiliary contact of first A.C. contactor is connected in series in the wire loop of the second A.C. contactor, and after main power source is sent a telegram here again, make stand-by power supply reset, main power source normally works.Interlock protection established by two A.C. contactors, ensures that two-way power supply only has the state that comes into operation.
This control system achieves duplicate supply handoff functionality standby mutually while guarantee secondary water-supply equipment normally runs, thus ensure that secondary water-supply equipment continuous duty.Only increase by two A.C. contactors and the time relay, structure is simple, economical and practical.
Improve further as to the technical program ground, the first described A.C. contactor, between the second A.C. contactor and pump motor, be in series with circuit breaker.
By increasing circuit breaker, circuit breaker is utilized to carry out protection to the power circuit of this control system and pump motor etc., can automatic shutdown circuit when serious overload or short circuit and the fault such as under-voltage occur for they.
Improve further as to the technical program ground, in described circuit, be provided with pump motor rotating recognition control circuit.
Improve further as to the technical program ground, described pump motor rotating recognition control circuit arranges between circuit breaker and pump motor; Described pump motor rotating recognition control circuit is connected with the 3rd A.C. contactor, the 4th A.C. contactor, phase sequence protective relay, and the 3rd A.C. contactor positive phase sequence is in parallel with the 4th A.C. contactor negative-phase sequence; In parallel with phase sequence protective relay after the 3rd described A.C. contactor, the 4th A.C. contactor parallel connection; The warning contact of described phase sequence protective relay enters PLC central controller.
By increasing a phase sequence protective relay and two A.C. contactors; ensureing that secondary water-supply equipment main power source, stand-by power supply achieve the auto-conversion function of circuit phase sequence while automatically switching; collateral security secondary water-supply pump motor rotates forward forever; namely on the basis of original handoff functionality, achieve the automatic identification function of the forward and backward of secondary water-supply pump motor; avoid the phenomenon burnt out because of supply-water pump motor reversal; ensure that the normal continuously of secondary water-supply equipment runs, this Control system architecture is simple, economical and practical.
Improve further as to the technical program ground, in described circuit, pump motor connects frequency converter, and the operating state of pump motor is adjusted by frequency converter.
By increasing frequency converter, pump motor can realize different rotating speeds and torque under the driving of frequency converter, to adapt to the demand of load variations, and also effective saves energy while better carrying out secondary water-supply.
Accompanying drawing explanation
Fig. 1 is Dual-power automatic switching water supply equipment control system circuit diagram.
Fig. 2 is the circuit diagram of pump motor rotating identification control section.
Description of reference numerals: 1-main power source; 2-stand-by power supply; 3-second A.C. contactor; 4-first A.C. contactor; 5-circuit breaker; 6-the 3rd A.C. contactor; 7-phase sequence protective relay; 8-the 4th A.C. contactor; 9-frequency converter; 10-pump motor.
Embodiment
Connection with figures is described in further detail the utility model below.
Index map 1 is known, and the Dual-power automatic switching water supply equipment control system of the technical program, comprises pump motor 10, control system, is provided with main power source 1, stand-by power supply 2 in described circuit; Described control system accesses two the first A.C. contactor 4, second A.C. contactors 3 in parallel in power supply loop; On the first described A.C. contactor 4, on termination main power source 1, second A.C. contactor, termination stand-by power supply 2, first A.C. contactor 4, second A.C. contactor 3 posterior end in parallel and pump motor 10 are connected in series.Circuit breaker 5 is in series with between the first described A.C. contactor 4, second A.C. contactor 3 and pump motor 10.
Composition graphs 2 is known, is provided with pump motor 10 rotating recognition control circuit in described circuit.Described pump motor 10 rotating recognition control circuit arranges between circuit breaker 5 and pump motor 10; Described pump motor 10 rotating recognition control circuit is connected with the 3rd A.C. contactor 6, the 4th A.C. contactor 8, phase sequence protective relay the 7, three A.C. contactor 6 positive phase sequence are in parallel with the 4th A.C. contactor 8 negative-phase sequence; It is in parallel with phase sequence protective relay 7 after the 3rd described A.C. contactor 6, the 4th A.C. contactor 8 are in parallel; The warning contact of described phase sequence protective relay 7 enters PLC central controller.In described circuit, pump motor 10 connects frequency converter 9, and the operating state of pump motor 10 is adjusted by frequency converter 9.
The operation principle of the technical program is as follows:
Main power source 1A connects coil one end of the first A.C. contactor 4, and another terminal connecting zero line of coil, the normally closed auxiliary contact of the first A.C. contactor 4 is connected in the coil of the time relay, and the coil power of the time relay gets the A phase of stand-by power supply 2.When main power source 1 has electricity, the first A.C. contactor 4 adhesive, three phase mains delivers to supply-water pump power circuit breaker 5 by main contacts.
When main power source 1 dead electricity, the first A.C. contactor 4 normally closed auxiliary contact closes, and the time relay starts the timing that is energized, and delay time reaches the adhesive of rear drive second A.C. contactor 3, and stand-by power supply 2 delivers to supply-water pump power circuit breaker 5 by main contacts.Another group normally closed auxiliary contact of first A.C. contactor 4 is connected in series in the wire loop of the second A.C. contactor 3, and after main power source 1 is sent a telegram here again, stand-by power supply 2 is resetted, main power source 1 normally works.Interlock protection established by two A.C. contactors, ensures that two-way power supply only has the state that comes into operation.
For pump motor 10 rotating recognition control circuit:
1, the forward direction of phase sequence and supply-water pump motor 10 is set when first time energising;
2, when second time or the N time energising, if phase sequence is with identical before, namely phase sequence protective relay 7 can not send alarm signal, PLC central controller is defaulted as positive phase sequence when not receiving the alarm signal that phase sequence protective relay 7 sends, and send output signal simultaneously and make the 3rd A.C. contactor 6 adhesive, by power delivery to the power end of frequency converter 9; If phase sequence is from different before; namely phase sequence protective relay 7 can send alarm signal; PLC central controller sends output signal and makes the 4th A.C. contactor 8 adhesive when receiving the alarm signal that phase sequence protective relay 7 sends; thus negative-phase sequence is converted to the power end that positive phase sequence delivers to frequency converter 9, namely assure feed water pump motor 10 rotates forward.
Claims (5)
1. Dual-power automatic switching water supply equipment control system, comprises pump motor, and control system is characterized in that; Main power source, stand-by power supply is provided with in circuit;
Described control system accesses two the first A.C. contactor, the second A.C. contactors in parallel in power supply loop;
Termination main power source on the first described A.C. contactor, termination stand-by power supply on the second A.C. contactor, the first A.C. contactor, the second A.C. contactor posterior end in parallel and pump motor are connected in series.
2. Dual-power automatic switching water supply equipment control system according to claim 1, is characterized in that: the first described A.C. contactor, be in series with circuit breaker between the second A.C. contactor and pump motor.
3. Dual-power automatic switching water supply equipment control system according to claim 2, is characterized in that: be provided with pump motor rotating recognition control circuit in described circuit.
4. Dual-power automatic switching water supply equipment control system according to claim 3, is characterized in that: described pump motor rotating recognition control circuit arranges between circuit breaker and pump motor; Described pump motor rotating recognition control circuit is connected with the 3rd A.C. contactor, the 4th A.C. contactor, phase sequence protective relay, and the 3rd A.C. contactor positive phase sequence is in parallel with the 4th A.C. contactor negative-phase sequence; In parallel with phase sequence protective relay after the 3rd described A.C. contactor, the 4th A.C. contactor parallel connection; The warning contact of described phase sequence protective relay enters PLC central controller.
5. Dual-power automatic switching water supply equipment control system according to claim 4, is characterized in that: in described circuit, pump motor connects frequency converter, and the operating state of pump motor is adjusted by frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420861010.XU CN204316180U (en) | 2014-12-31 | 2014-12-31 | Dual-power automatic switching water supply equipment control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420861010.XU CN204316180U (en) | 2014-12-31 | 2014-12-31 | Dual-power automatic switching water supply equipment control system |
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| CN204316180U true CN204316180U (en) | 2015-05-06 |
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| CN201420861010.XU Active CN204316180U (en) | 2014-12-31 | 2014-12-31 | Dual-power automatic switching water supply equipment control system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800349A (en) * | 2017-11-02 | 2018-03-13 | 中国航发哈尔滨东安发动机有限公司 | A kind of double-speed motor control circuit |
| CN108313234A (en) * | 2018-03-21 | 2018-07-24 | 无锡德林防务装备股份有限公司 | Open type hydraulic system watertight controlling device for doors |
| CN108382537A (en) * | 2018-03-21 | 2018-08-10 | 无锡德林防务装备股份有限公司 | Closed Hydraulic watertight controlling device for doors |
| CN108767970A (en) * | 2018-05-29 | 2018-11-06 | 河南森源电气股份有限公司 | A kind of dual power supply automatic bus |
-
2014
- 2014-12-31 CN CN201420861010.XU patent/CN204316180U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800349A (en) * | 2017-11-02 | 2018-03-13 | 中国航发哈尔滨东安发动机有限公司 | A kind of double-speed motor control circuit |
| CN108313234A (en) * | 2018-03-21 | 2018-07-24 | 无锡德林防务装备股份有限公司 | Open type hydraulic system watertight controlling device for doors |
| CN108382537A (en) * | 2018-03-21 | 2018-08-10 | 无锡德林防务装备股份有限公司 | Closed Hydraulic watertight controlling device for doors |
| CN108767970A (en) * | 2018-05-29 | 2018-11-06 | 河南森源电气股份有限公司 | A kind of dual power supply automatic bus |
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