CN1067987A - Polarized rare-earth permanent-magnet contactor and pulsed operation standard electrical apparatus control system thereof - Google Patents
Polarized rare-earth permanent-magnet contactor and pulsed operation standard electrical apparatus control system thereof Download PDFInfo
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- CN1067987A CN1067987A CN 91111785 CN91111785A CN1067987A CN 1067987 A CN1067987 A CN 1067987A CN 91111785 CN91111785 CN 91111785 CN 91111785 A CN91111785 A CN 91111785A CN 1067987 A CN1067987 A CN 1067987A
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- contactor
- earth permanent
- control system
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Abstract
Contactor electromagnet iron core of the present invention is with rare earth permanent-magnetic material and the compound formation of ordinary low-carbon steel; Adapted " power-off restoration protector " of the present invention annex can make the contactor that is in closure state automatically reset in the moment of cutting off the power supply again.When forming electrical apparatus control system jointly with rare earth permanent magnet contactor of the present invention and conventional electromagnetic contactor, all various all kinds of contactors of this system all will work in the state of the no energy consumption of operation, noiseless, no temperature rise.
Description
The invention belongs to electrical equipment manufacturing and electrical equipment control field.
At present domestic and international general all kinds of conventional contactor product, solenoid needs to pass through constantly exciting current in the process that the contact is remained closed, thereby produces a series of shortcomings that influence the contactor electric life such as noise, energy consumption, temperature rise.Recently as the various magnetic of propositions such as Chinese patent application numbers 89213167.5 keep that technical scheme still has complex structure, wiring is cumbersome and the more high deficiency of electronic component frequency of utilization, outstanding apparent discomfort when with its assembling electrical apparatus control system.
The objective of the invention is to propose a kind of technical scheme of utilizing rare earth permanent-magnetic material and ordinary low-carbon steel compound formation polarized type electromagnet and making the polarized rare-earth permanent-magnet contactor of this electromagnet; Another object of the present invention provides the power-off restoration protector circuit of a kind of and above-mentioned polarized rare-earth permanent-magnet contactor adapted; The 3rd purpose of the present invention provides a kind ofly forms the embodiment of pulsed operation standard electrical apparatus control system jointly by above-mentioned polarized rare-earth permanent-magnet contactor and conventional electromagnetic contactor, all works in the no energy consumption state of operation at these intrasystem various all kinds of contactors.
Content division of the present invention is as follows:
The electromagnet structure of polarized rare-earth permanent-magnet contactor is shown in accompanying drawing 1..On the stem stem of moving iron core (1), inlay a rare earth permanent-magnetic material (2) and constitute compound iron core.Moving iron core (1) relies on spring thrust to keep separating with static iron core (3).When flowing through the pulse electric current in the winding (4), if the magnetic flux of electric current and permanent magnet flux superposition in the same way, then moving iron core (1) is by adhesive, with static iron core (3) formation closed magnetic circuit.After the pulse current vanishes, the magnetomotive force of rare earth permanent-magnetic material (2) encourages bigger magnetic flux in above-mentioned closed magnetic circuit, and its magnetic pull is enough to make the contact sets of contactor to continue closed (disconnection).When another reverse pulse electric current flow through winding (4), current excitation magnetic flux and permanent magnet flux oppositely repelled each other, and forced moving iron core (1) to separate with static iron core (3), and the contact sets of contactor is disconnected (adhesive).Above-mentioned moving iron core (1) and available ordinary low-carbon steel of static iron core (3) or cast iron one-shot forming, rare earth permanent-magnetic material (2) also can be compounded on other position or static iron core (3) of moving iron core (1), and dynamic and static iron core is T shape, the degree of lip-rounding, jar shape etc. also.
Power-off restoration protector circuit is shown in accompanying drawing 2..Press starter button (6), contactor winding (11) flows through a forward pulse electric current, iron core adhesive; Press stop button (7), contactor winding (11) flows through a reverse pulse electric current, and iron core separates; Controllable silicon (8), sample resistance (10) etc. are formed the outage trigger switch, when the unexpected power failure of electrical network, sample resistance (10) decompression, force controllable silicon (8) triggering and conducting, storage capacitor (9) is along contactor winding (11), controllable silicon (8) back discharge, and contactor is promptly finished the power-off restoration action.
The formation of pulsed operation standard electrical apparatus control system is described with the forward and backward control embodiment of a motor below.
Fig. 3. in conventional electromagnetic contactor C1, C2, C3 all connect by " crawl " mode; its normally opened contact 1-1,2-1,3-1 control two polarized rare-earth permanent-magnet contactor C4, C5 respectively and carry out the forward and backward of motor and the switch motion that stops, and its normally-closed contact 1-2,2-2,3-2 prevent the false triggering of power-off restoration protector and establish.Normally-closed contact 4-1,5-1 are used for the interlocking to polarized rare-earth permanent-magnet contactor C4, C5.
Course of action is as follows:
Press positive turn-button ZA, C1 gets electric, normally opened contact 1-1 closure, and C4 is through forward diode D1 conducting adhesive, and motor just changes; Unclamp positive turn-button ZA, the C1 dead electricity, 1-1 cut-offs, and C4 continues to keep attracting state by its permanent magnetism pulling force.Press stop button TA, C3 gets electric, normally opened contact 3-1 closure, and C4 discharges along backward diode D3 conducting, the motor stall.Counter-rotating button FA is in order to control C5 with the together positive turn-button ZA of the counter-rotating course of action of realizing motor.Have a power failure in case electrical network is unexpected, " power-off restoration protector " institute accumulate that is shown in the frame of broken lines can disconnect its contact sets via the polarized rare-earth permanent-magnet contactor that is in closure state (C4 or C5) back discharge.When needs connect protection relay (hot protective relay, open-phase protection relay etc.), as long as with the normally opened contact RJ of protection relay and receive stop button TA or normally opened contact 3-1 two ends.Below Fig. 3, provided a kind of connection plan of realizing " crawl " with a duplex button DA control polarized rare-earth permanent-magnet contactor C simultaneously.
The pulsed operation standard electrical apparatus control system that the foregoing description is showed has been realized using with of all kinds of polarized type contactors and conventional electromagnetic contactor, because the conventional electromagnetic contactor in this system all works in " crawl " state, thereby the operation energy consumption of all contactors in the system all reduces to zero, this is to improving the actual life of conventional electromagnetic contactor, and eliminating running noises and saving electric energy significantly provides an effective new way.
Claims (3)
1, a kind of polarized rare-earth permanent-magnet contactor, the electromagnet core that it is characterized in that this contactor are to be inlayed by ordinary low-carbon steel and rare earth permanent-magnetic material compoundly to constitute.
2, a kind of and claim 1, the power-off restoration protector of the electromagnet adapted of described contactor, it is characterized in that cutting off the power supply moment by storage capacitor through solenoid and controllable silicon discharge so that the electromagnet that is in closure state from horizontal reset.
3, a kind of pulsed operation standard electrical apparatus control system, the contactor that it is characterized in that break-make load main circuit is the polarized type contactor, the contactor of intermediate link can be the conventional electromagnetic contactor that works in " crawl " state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91111785 CN1067987A (en) | 1991-12-20 | 1991-12-20 | Polarized rare-earth permanent-magnet contactor and pulsed operation standard electrical apparatus control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91111785 CN1067987A (en) | 1991-12-20 | 1991-12-20 | Polarized rare-earth permanent-magnet contactor and pulsed operation standard electrical apparatus control system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1067987A true CN1067987A (en) | 1993-01-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91111785 Pending CN1067987A (en) | 1991-12-20 | 1991-12-20 | Polarized rare-earth permanent-magnet contactor and pulsed operation standard electrical apparatus control system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1067987A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100382222C (en) * | 2004-04-06 | 2008-04-16 | 吕炎 | Permanent-magnet pulse contactor |
| CN101252038B (en) * | 2007-12-19 | 2010-09-29 | 四川长虹电器股份有限公司 | Single end excitation transformer |
-
1991
- 1991-12-20 CN CN 91111785 patent/CN1067987A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100382222C (en) * | 2004-04-06 | 2008-04-16 | 吕炎 | Permanent-magnet pulse contactor |
| CN101252038B (en) * | 2007-12-19 | 2010-09-29 | 四川长虹电器股份有限公司 | Single end excitation transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |