CN204859012U - But direct current controlgear of high accuracy steady voltage communication - Google Patents
But direct current controlgear of high accuracy steady voltage communication Download PDFInfo
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- CN204859012U CN204859012U CN201520578240.XU CN201520578240U CN204859012U CN 204859012 U CN204859012 U CN 204859012U CN 201520578240 U CN201520578240 U CN 201520578240U CN 204859012 U CN204859012 U CN 204859012U
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- 238000004891 communication Methods 0.000 title claims abstract description 23
- 230000000087 stabilizing effect Effects 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000001962 electrophoresis Methods 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000005070 sampling Methods 0.000 description 3
- 206010044565 Tremor Diseases 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model provides a but direct current controlgear of high accuracy steady voltage communication, including power rectification return circuit, control circuit, control circuit includes touch -sensitive screen, PLC, voltage outer ring control circuit, current loop control circuit, pulse output device, the electric operation circuit that continues, and then electric operation circuit input is connected with PLC, output and power rectification loop connection, voltage outer ring control circuit includes controller II, voltage changer, and current loop control circuit includes controller I, current transmitter, and controller I, controller II all include main singlechip, reserve singlechip. Adopt this kind of structure, the electrophoresis process is more stable, adopts the two control system of main singlechip and reserve singlechip, and two control system work all the way, and online hot backup is not had the disturbance from diagnostic system automated inspection and is switched over to the hot backup system through being out of order when work systems breaks down all the way, and electrical power unit still continues the operation according to former settlement parameter, does not stop production.
Description
Technical field
The utility model relates to electrophoresis power control appliance field, and being specifically related to a kind of high-precision voltage stabilizing can the DC control equipment of communication.
Background technology
KGY series electrophoresis DC power supply is mainly used in the coating process of the industries such as automobile, motorcycle, household electrical appliances.Its objective is make surface of the work produce one deck compact structure, thickness evenly, surface smoothing and the paint film of strong adhesion, to prevent workpiece from getting rusty, extend its useful life.This equipment is one of key equipment special in paint line.Wherein core control portions is control machines and voltage stabilizing, current stabilization and overvoltage, overcurrent protection; Also need to possess peripheral interface to realize Automated condtrol in addition.Traditional electrophoresis controller is complicated many plate structures, and install complicated, wiring is various, poor reliability, and does not possess digital interface; Along with the raising of industrial automatization, traditional control assembly cannot be met consumers' demand.In addition, control board for subsequent use, in use once break down, by device powers down, then must be replaced by power-supply controller of electric, causes producing incuring loss through delay, and brings unnecessary loss to user.
Utility model content
The utility model is for the problems referred to above weak point, there is provided a kind of high-precision voltage stabilizing can the DC control equipment of communication, solve existing electrophoresis power control appliance complicated operation, poor reliability, do not possess digital interface once break down, need power-off to change the problem of control board.
The technical solution of the utility model is achieved in that
High-precision voltage stabilizing can the DC control equipment of communication, comprising:
Power rectifier loop;
Control loop, comprise touch-screen, PLC, outer voltage control loop, current inner loop control loop, pulse outputting unit and relay operation circuit, described touch-screen is connected with described PLC input, described outer voltage control loop is in parallel with described current inner loop control loop, both inputs are all connected with described PLC, and output is all connected with described pulse outputting unit; Described relay operation circuit input is connected with described PLC, and output is connected with described power rectifier loop; Described outer voltage control loop comprises controller II, voltage transmitter, and the input of described controller II is connected with described PLC, and output connects pulse distribution plate; Described voltage transmitter input is connected with described pulse distribution plate by thyristor, and output is connected with described pulse outputting unit; Described current inner loop control loop comprises controller I, current transducer, and the input of described controller I is connected with described PLC, and output connects described pulse distribution plate; Described current transducer input is connected with described pulse distribution plate by described thyristor, and output is connected with described pulse outputting unit; Described controller I is formed by host scm, single-chip microcomputer for subsequent use, the computer power be all connected with described host scm and described single-chip microcomputer for subsequent use, A/D converter, monitor controller, synchronizing signal plate with described controller II, and described host scm is all connected with described PLC with described single-chip microcomputer for subsequent use.
Further, described power rectifier loop comprises rectifier transformer, three-phase full-controlled rectifier bridge I, three-phase full-controlled rectifier bridge II, the filter reactor, voltage sample transducer, the current sample transducer that are connected with described three-phase full-controlled rectifier bridge I, described three-phase full-controlled rectifier bridge II, the external three-phase alternating-current supply of described rectifier transformer input, output connects described three-phase full-controlled rectifier bridge I, described three-phase full-controlled rectifier bridge II, and described filter reactor is connected with described voltage sample transducer, described current sample transducer respectively.
Further, described rectifier transformer secondary side is parallel with fast acting fuse, piezo-resistance.
Further, described three-phase full-controlled rectifier bridge I is Thyristor Three-phase full-controlled rectifier bridge.
Further, described control loop also comprises the audible alarm and indication mechanism that are connected with described host scm, described single-chip microcomputer for subsequent use.
Further, described host scm, described single-chip microcomputer for subsequent use are MCS51 series monolithic.
Further, described host scm, described single-chip microcomputer for subsequent use are provided with RS485 communication interface, described host scm, described single-chip microcomputer for subsequent use are all connected with described PLC by RS485 communication interface.
The course of work of the present utility model:
In power rectifier process, external three-phase alternating-current supply is equal through rectifier transformer coating-forming voltage effective value, electrically upper isolation, but there are two groups of three phase mains of 30 ° of phase differences, be transported to two groups of three-phase full-controlled rectifier bridges, then reactor filtering ripple that direct current is exported is less after filtering, and voltage, current sampling signal and pilot signal are supplied to PLC by voltage sample transducer, the current sample transducer of DC output end parallel connection.Touch-screen inputs given voltage, electric current, after PLC process, synchronizing signal is sent into host scm and single-chip microcomputer for subsequent use by synchronizing signal plate, the trigger impulse that host scm and single-chip microcomputer for subsequent use will send using this signal as benchmark corresponding to power rectifier loop, then electric current, voltage feedback signal, current PI operational parameter, voltage PI operational factor is converted to corresponding digital quantity stored in corresponding single-chip microcomputer ram memory cell through A/D converter, carried out judging and calculating as integrated data by host scm, provide pulse signal to pulse distribution device, the pilot angle of thyristor is adjusted by pulse-triggered, by controlling after Phototube Coupling to export, improve the antijamming capability of system.Then PLC, touch-screen is sent to by RS485 communication modes, the relevant information that meanwhile, master controller receives touch-screen setting, PLC sends.Host scm keeps communicating with monitor controller with single-chip microcomputer for subsequent use simultaneously, single-chip microcomputer work for subsequent use can be switched to when occurring abnormal in operating circuit undisturbed, transmit a signal to audible alarm and indication mechanism, the prompting operator that gives the alarm overhauls simultaneously; The startup of relay operation circuit finishing equipment, operation, stopping, the integrated protection of fault and various Signal aspects.
The beneficial effects of the utility model:
The utility model structure adopts the double circle automatic control system of outer voltage control loop, current inner loop control loop composition, electrophoresis workpieces shakiness when entering groove can be avoided to cause uprushing of electrophoretic current, make that the course of work is more stable, current limiting characteristic are good, safe and reliable to operation, when achieving device start automatically soft (automatic boosting), automatic soft stop (automatic step-down) during stopping; Adopt host scm and single-chip microcomputer double control system for subsequent use, double control system one road works, the one online Hot Spare in tunnel, automatically fault is detected by self-diagnosable system and undisturbed is switched to hot backup system when work system breaks down, power-supply device still continues to run by former setup parameter, does not stop production; Adopt PLC to control, precision is high, stable and reliable operation, and structure is attractive in appearance; Touch-screen is adopted to make operation more directly perceived, screen is provided with parameters, electrophoresis tank schematic diagram, be shown to by electrophoresis process on screen, make electrophoresis process very clear, touch-screen shows the electrophoretic parameters of each electrophoresis workpieces in real time with the line chart form that becomes, can the whole electrophoresis process of tracking and monitoring, there is communication function, in real time by electrophoresis process record for shelves, be convenient to the query analysis to historical record.
Accompanying drawing explanation
Fig. 1 is the utility model structured flowchart;
Fig. 2 is the utility model power rectifier part block diagram;
Fig. 3 is the utility model control loop block diagram;
Fig. 4 is the utility model controller control block diagram;
In figure: 11, rectifier transformer; 12, three-phase full-controlled rectifier bridge I; 13, three-phase full-controlled rectifier bridge II; 14, filter reactor; 15, voltage sample transducer; 16, current sample transducer; 17, fast acting fuse; 18, piezo-resistance; 21, touch-screen; 22, PLC; 23, pulse outputting unit; 24, relay operation circuit; 25, controller II; 26, voltage transmitter; 27, pulse distribution plate; 28, thyristor; 29, controller I; 20, current transducer; 201, host scm; 202, single-chip microcomputer for subsequent use; 203, computer power; 204, A/D converter; 205, monitor controller; 206, synchronizing signal plate; 207, audible alarm and indication mechanism.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in figures 1-4, a kind of high-precision voltage stabilizing can the DC control equipment of communication, comprising:
Power rectifier loop, for becoming two-phase DC power supply by three-phase alternating-current supply;
Control loop, comprise touch-screen 21, PLC22, outer voltage control loop, current inner loop control loop, pulse outputting unit 23 and relay operation circuit 24, touch-screen 21 is connected with PLC22 input, outer voltage control loop is in parallel with current inner loop control loop, both inputs are all connected with PLC22, and output is all connected with pulse outputting unit 23; Relay operation circuit 24 input is connected with PLC22, and output is connected with power rectifier loop; Outer voltage control loop comprises controller II 25, voltage transmitter 26, and the input of controller II 25 is connected with PLC22, and output connects pulse distribution plate 27; Voltage transmitter 26 input is connected with pulse distribution plate 27 by thyristor 28, and output is connected with pulse outputting unit 23; Current inner loop control loop comprises controller I 29, current transducer 20, and the input of controller I 29 is connected with PLC22, and output connects pulse distribution plate 27; Current transducer 20 input is connected with pulse distribution plate 27 by thyristor 28, and output is connected with pulse outputting unit 23; Controller I 29 is formed by host scm 201, single-chip microcomputer for subsequent use 202, the computer power 203 be all connected with host scm 201 and single-chip microcomputer for subsequent use 202, A/D converter 204, monitor controller 205, synchronizing signal plate 206 with controller II 25, and host scm 201 is all connected with PLC22 with single-chip microcomputer 202 for subsequent use.
Adopt the double circle automatic control system of outer voltage control loop, current inner loop control loop composition, electrophoresis workpieces shakiness when entering groove can be avoided to cause uprushing of electrophoretic current, make that the course of work is more stable, current limiting characteristic are good, safe and reliable to operation, when achieving device start automatically soft (automatic boosting), automatic soft stop (automatic step-down) during stopping; Adopt host scm 201 and single-chip microcomputer for subsequent use 202 double control system, double control system one road works, the one online Hot Spare in tunnel, automatically fault is detected by self-diagnosable system and undisturbed is switched to hot backup system when work system breaks down, power-supply device still continues to run by former setup parameter, does not stop production; Adopt PLC22 to control, precision is high, stable and reliable operation, and structure is attractive in appearance; Touch-screen 21 is adopted to make operation more directly perceived, screen is provided with parameters, electrophoresis tank schematic diagram, be shown to by electrophoresis process on screen, make electrophoresis process very clear, touch-screen 21 shows the electrophoretic parameters of each electrophoresis workpieces in real time with the line chart form that becomes, can the whole electrophoresis process of tracking and monitoring, there is communication function, in real time by electrophoresis process record for shelves, be convenient to the query analysis to historical record; The startup of relay operation circuit 24 finishing equipment, operation, stopping, the integrated protection of fault and various Signal aspects.
Power rectifier loop 1 comprises rectifier transformer 11, three-phase full-controlled rectifier bridge I 12, three-phase full-controlled rectifier bridge II 13, the filter reactor 14 be connected with three-phase full-controlled rectifier bridge I 12, three-phase full-controlled rectifier bridge II 13, voltage sample transducer 15, current sample transducer 16, the external three-phase alternating-current supply of rectifier transformer 11 input, output connects three-phase full-controlled rectifier bridge I 12, three-phase full-controlled rectifier bridge II 13, and filter reactor 14 is connected with voltage sample transducer 15, current sample transducer 16 respectively.Voltage sample transducer 15, current sample transducer 16 can provide the pilot signal of the 4-20mA needed for voltage sampling signal, current sampling signal and the external world to system.
Rectifier transformer 11 secondary side is parallel with fast acting fuse 17, piezo-resistance 18.Rectifier transformer secondary side joint has fast acting fuse 17, and for suppressing the overcurrent of circuit, piezo-resistance 18 is for suppressing the switching overvoltage of circuit.
Three-phase full-controlled rectifier bridge I 12 is Thyristor Three-phase full-controlled rectifier bridge.
Control loop also comprises the audible alarm and indication mechanism 207 that are connected with host scm 201, single-chip microcomputer for subsequent use 202.When there is overvoltage, over current fault in circuit, equipment can automatically detect and send warning, and prompting staff keeps in repair in time.
Host scm 201, single-chip microcomputer for subsequent use 202 are MCS51 series monolithic, and stability is high, and operational precision is high.
Host scm 201, single-chip microcomputer for subsequent use 202 are provided with RS485 communication interface, and host scm 201, single-chip microcomputer for subsequent use 202 are all connected with PLC22 by RS485 communication interface.Adopt PLC22 to replace adaptive polarizing memory voltage time constant control circuit, avoid the machine vibration because of relay, and each electric elements contact caused loosens, and decreases fault point, be convenient to safeguard.
These are only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (7)
1. high-precision voltage stabilizing can the DC control equipment of communication, it is characterized in that, comprising:
Power rectifier loop;
Control loop, comprise touch-screen (21), PLC (22), outer voltage control loop, current inner loop control loop, pulse outputting unit (23) and relay operation circuit (24), described touch-screen (21) is connected with described PLC (22) input, described outer voltage control loop is in parallel with described current inner loop control loop, both inputs are all connected with described PLC (22), and output is all connected with described pulse outputting unit (23); Described relay operation circuit (24) input is connected with described PLC (22), and output is connected with described power rectifier loop; Described outer voltage control loop comprises controller II (25), voltage transmitter (26), the input of described controller II (25) is connected with described PLC (22), and output connects pulse distribution plate (27); Described voltage transmitter (26) input is connected with described pulse distribution plate (27) by thyristor (28), and output is connected with described pulse outputting unit (23); Described current inner loop control loop comprises controller I (29), current transducer (20), the input of described controller I (29) is connected with described PLC (22), and output connects described pulse distribution plate (27); Described current transducer (20) input is connected with described pulse distribution plate (27) by described thyristor (28), and output is connected with described pulse outputting unit (23); Described controller I (29) is formed by host scm (201), single-chip microcomputer for subsequent use (202), the computer power (203) be all connected with described host scm (201) and described single-chip microcomputer for subsequent use (202), A/D converter (204), monitor controller (205), synchronizing signal plate (206) with described controller II (25), and described host scm (201) is all connected with described PLC (22) with described single-chip microcomputer for subsequent use (202).
2. a kind of high-precision voltage stabilizing according to claim 1 can the DC control equipment of communication, it is characterized in that: described power rectifier loop (1) comprises rectifier transformer (11), three-phase full-controlled rectifier bridge I (12), three-phase full-controlled rectifier bridge II (13), with described three-phase full-controlled rectifier bridge I (12), the filter reactor (14) that described three-phase full-controlled rectifier bridge II (13) connects, voltage sample transducer (15), current sample transducer (16), the external three-phase alternating-current supply of described rectifier transformer (11) input, output connects described three-phase full-controlled rectifier bridge I (12), described three-phase full-controlled rectifier bridge II (13), described filter reactor (14) respectively with described voltage sample transducer (15), described current sample transducer (16) connects.
3. a kind of high-precision voltage stabilizing according to claim 2 can the DC control equipment of communication, it is characterized in that: described rectifier transformer (11) secondary side is parallel with fast acting fuse (17), piezo-resistance (18).
4. a kind of high-precision voltage stabilizing according to claim 2 can the DC control equipment of communication, it is characterized in that: described three-phase full-controlled rectifier bridge I (12) is Thyristor Three-phase full-controlled rectifier bridge.
5. a kind of high-precision voltage stabilizing according to claim 1 can the DC control equipment of communication, it is characterized in that: described control loop also comprises the audible alarm and indication mechanism (207) that are connected with described host scm (201), described single-chip microcomputer for subsequent use (202).
6. a kind of high-precision voltage stabilizing according to claim 1 can the DC control equipment of communication, it is characterized in that: described host scm (201), described single-chip microcomputer for subsequent use (202) are MCS51 series monolithic.
7. a kind of high-precision voltage stabilizing according to claim 1 can the DC control equipment of communication, it is characterized in that: described host scm (201), described single-chip microcomputer for subsequent use (202) are provided with RS485 communication interface, described host scm (201), described single-chip microcomputer for subsequent use (202) are all connected with described PLC (22) by RS485 communication interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520578240.XU CN204859012U (en) | 2015-08-04 | 2015-08-04 | But direct current controlgear of high accuracy steady voltage communication |
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| CN201520578240.XU CN204859012U (en) | 2015-08-04 | 2015-08-04 | But direct current controlgear of high accuracy steady voltage communication |
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| CN204859012U true CN204859012U (en) | 2015-12-09 |
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| CN201520578240.XU Expired - Fee Related CN204859012U (en) | 2015-08-04 | 2015-08-04 | But direct current controlgear of high accuracy steady voltage communication |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357133A (en) * | 2016-10-17 | 2017-01-25 | 株洲四方电气有限公司 | Double-channel hot-standby control device used for heavy-duty rectifier |
| CN109873487A (en) * | 2019-02-15 | 2019-06-11 | 南京航空航天大学 | A kind of master-slave back-up method for three-phase tri-level VIENNA rectifier |
-
2015
- 2015-08-04 CN CN201520578240.XU patent/CN204859012U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357133A (en) * | 2016-10-17 | 2017-01-25 | 株洲四方电气有限公司 | Double-channel hot-standby control device used for heavy-duty rectifier |
| CN109873487A (en) * | 2019-02-15 | 2019-06-11 | 南京航空航天大学 | A kind of master-slave back-up method for three-phase tri-level VIENNA rectifier |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 |