CN103066562A - Phase sequence protective device for centrifugal machine and motor - Google Patents
Phase sequence protective device for centrifugal machine and motor Download PDFInfo
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- CN103066562A CN103066562A CN2012105325689A CN201210532568A CN103066562A CN 103066562 A CN103066562 A CN 103066562A CN 2012105325689 A CN2012105325689 A CN 2012105325689A CN 201210532568 A CN201210532568 A CN 201210532568A CN 103066562 A CN103066562 A CN 103066562A
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- relay
- protective device
- protective relay
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Abstract
A phase sequence protective device for a centrifugal machine and a motor comprises the centrifugal machine driven by the motor, wherein the motor is a three-phase motor, a control circuit of the motor is connected with a controller, the controller comprises a phase dislocation protective relay, a phase failure protective relay and an overvoltage protective relay, the phase dislocation protective relay is provided with a phase dislocation indicator, the phase failure protective relay is provided with a phase failure indicator, and the overvoltages protective relay is provided with an overvoltages indicator. The phase sequence protective device has the advantages of avoiding safety potential risks caused by phase dislocation, phase loss or overvoltage and damage problems of equipment from occurring, and effectively improving work safety and reliability of the centrifugal machine.
Description
Technical field
This invention relates to a kind of phase sequence protective device of computer, particularly a kind of centrifugal motor phase sequence protective device of computer.
Background technology
Centrifuge is mainly used in the solid particle in the suspension and liquid are separated; Or with two kinds of density differences in the emulsion, immiscible liquid separately again.Often utilize the moisture in the centrifuge oil and water separation in the industry, the driving of centrifuge is to be driven by three phase electric machine.But the drive motors of centrifuge can the entanglement of three characteristics of the middle term power phase cause the loosening generation casualty accident that flies out of rotary drum inner member when initial start, operation brings potential safety hazard to equipment; Three phase mains can cause drive motors to burn because of phase shortage and voltage overrate in the running, brings economic loss to the user.
Summary of the invention
Goal of the invention: the purpose of this invention is to provide and a kind ofly can avoid potential safety hazard that centrifugal motor causes because of phase sequence entanglement or phase shortage and the centrifugal motor phase sequence protective device of computer of burn-down of electric motor.
Technical scheme: a kind of centrifugal motor phase sequence protective device of computer, comprise by motor-driven centrifuge, described motor is three phase electric machine, and the control circuit of described motor is connected with controller, and described controller comprises fault-phase protection relay, phase failure relay and overvoltage protection relay; Described fault-phase protection relay is provided with the misphase indicator light, and phase failure relay is provided with disconnected phase indicator light, and described overvoltage protection relay is provided with the overvoltage indicator light.
Operation principle: if when centrifuge starts generation three-phase power supply phase sequence entanglement phenomenon; the fault-phase protection actuating of relay is cut off centrifugal motor power supply while misphase indicator light and is lighted; phase sequence entanglement when reminding operating personnel to start; operating personnel restart after adjusting correctly, have effectively avoided the loosening accident generation that flies out and hurt sb.'s feelings of element in the rotary drum.When occuring power phase shortage or voltage above the safety value scope in the centrifuge running; phase failure relay or the overvoltage protection actuating of relay are cut off the electricity supply; disconnected phase indicator light or overvoltage indicator light light simultaneously; corresponding problem has occured in alert, can restart centrifuge after the problem for the treatment of solves.
Beneficial effect: the present invention has avoided centrifuge because the potential safety hazard that phase sequence entanglement, phase shortage or overtension cause and the generation of device damage problem have improved the safety and reliability of centrifuge work effectively.
Description of drawings
Fig. 1 is control principle drawing of the present invention
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in the figure, a kind of centrifugal motor phase sequence protective device of computer, comprise the centrifuge 2 that is driven by motor 1, described motor 1 is three phase electric machine, the control circuit of described motor 1 is connected with controller 3, and described controller 3 comprises fault-phase protection relay 4, phase failure relay 5 and overvoltage protection relay 6; Described fault-phase protection relay 4 is provided with misphase indicator light 7, and phase failure relay 5 is provided with disconnected phase indicator light 8, and described overvoltage protection relay 6 is provided with overvoltage indicator light 9.
When if centrifuge 2 starts generation three-phase power supply phase sequence entanglement phenomenon; 4 actions of fault-phase protection relay are cut off centrifuge 2 motors 1 power supply while misphase indicator light 7 and are lighted; phase sequence entanglement when reminding operating personnel to start; operating personnel restart after adjusting correctly, have effectively avoided the loosening accident generation that flies out and hurt sb.'s feelings of element in the rotary drum.When occuring power phase shortage or voltage above the safety value scope in centrifuge 2 runnings; phase failure relay 5 or overvoltage protection relay 6 action power dumps; disconnected phase indicator light 8 or overvoltage indicator light 9 light simultaneously; corresponding problem has occured in alert, can restart centrifuge 2 after the problem for the treatment of solves.
Claims (1)
1. centrifugal motor phase sequence protective device of computer, comprise the centrifuge (2) that is driven by motor (1), described motor (1) is three phase electric machine, it is characterized in that: the control circuit of described motor (1) is connected with controller (3), and described controller (3) comprises fault-phase protection relay (4), phase failure relay (5) and overvoltage protection relay (6); Described fault-phase protection relay (4) is provided with misphase indicator light (7), and phase failure relay (5) is provided with disconnected phase indicator light (8), and described overvoltage protection relay (6) is provided with overvoltage indicator light (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105325689A CN103066562A (en) | 2012-12-12 | 2012-12-12 | Phase sequence protective device for centrifugal machine and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105325689A CN103066562A (en) | 2012-12-12 | 2012-12-12 | Phase sequence protective device for centrifugal machine and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103066562A true CN103066562A (en) | 2013-04-24 |
Family
ID=48109074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105325689A Pending CN103066562A (en) | 2012-12-12 | 2012-12-12 | Phase sequence protective device for centrifugal machine and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103066562A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0365018A (en) * | 1989-08-02 | 1991-03-20 | Matsushita Refrig Co Ltd | Power supply mechanism for machine provided with three-phase motor |
| CN2566513Y (en) * | 2002-07-25 | 2003-08-13 | 邯郸钢铁股份有限公司 | Comprehensive protector for AC electric machine |
| CN201336554Y (en) * | 2008-11-26 | 2009-10-28 | 朱鸽 | Three-phase power-supply protector with functions of counting and timing |
| CN102350402A (en) * | 2011-06-02 | 2012-02-15 | 江苏巴威工程技术股份有限公司 | Control system of centrifugal oil purification device |
| CN202957580U (en) * | 2012-12-12 | 2013-05-29 | 镇江市科能电力设备有限公司 | Phase sequence protection device for motor of centrifugal machine |
-
2012
- 2012-12-12 CN CN2012105325689A patent/CN103066562A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0365018A (en) * | 1989-08-02 | 1991-03-20 | Matsushita Refrig Co Ltd | Power supply mechanism for machine provided with three-phase motor |
| CN2566513Y (en) * | 2002-07-25 | 2003-08-13 | 邯郸钢铁股份有限公司 | Comprehensive protector for AC electric machine |
| CN201336554Y (en) * | 2008-11-26 | 2009-10-28 | 朱鸽 | Three-phase power-supply protector with functions of counting and timing |
| CN102350402A (en) * | 2011-06-02 | 2012-02-15 | 江苏巴威工程技术股份有限公司 | Control system of centrifugal oil purification device |
| CN202957580U (en) * | 2012-12-12 | 2013-05-29 | 镇江市科能电力设备有限公司 | Phase sequence protection device for motor of centrifugal machine |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130424 |