CN103646822A - Direct current electromagnetic type time relay and time delay method - Google Patents
Direct current electromagnetic type time relay and time delay method Download PDFInfo
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- CN103646822A CN103646822A CN201310709670.6A CN201310709670A CN103646822A CN 103646822 A CN103646822 A CN 103646822A CN 201310709670 A CN201310709670 A CN 201310709670A CN 103646822 A CN103646822 A CN 103646822A
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Abstract
The invention discloses a direct current electromagnetic type time relay and a time delay method. The direct current electromagnetic type time relay is composed of an electromagnetic system, a time delay mechanism and contacts, wherein a relay with an executing element thereof acting after a certain time delay is called as a time relay, and compared with the precision and controllability of the time relays in the early stage, the performances of the current product are much improved. However, most of the currently used time relays are complex in composition, short in service life, weak in interference resistance and high in production cost. The direct current electromagnetic type time relay comprises a base (1), wherein the base is connected to a damping sleeve (2), the inner part of the damping sleeve is connected to an iron core (3), the iron core is connected to a bracket (4) and a coil (5) respectively; the bracket is connected to a counter-force spring (6), a contact group (7) and an armature (8) respectively, the coil is connected to a pole shoe (9), the counter-force spring is connected to a counter-force adjusting nut (10), and the armature is connected to a non-magnetic gasket (11). The direct current electromagnetic type time relay is a time delay controlled switch device.
Description
technical field:
the present invention relates to a kind of DC electromagnetic type time relay and time-delay method.
background technology:
the present invention is by electromagnetic system, time-delay mechanism and contact three parts form, every relay sensing element obtains after actuating signal, its executive component will postpone the relay that certain hour just moves and be called the time relay, the at present the most frequently used time relay for large scale integrated circuit type one-tenth, it is to utilize capacitance-resistance principle to realize deferred action, in alternating current circuit, often adopt transformer to carry out step-down, integrated circuit is as core devices, its output adopts miniature electro-magnetic relay, what make that the performance of product and reliability will be good than the early stage air damping type time relay is many, the timing accuracy of product and controllability also improve a lot.But the DC electromagnetic type time relay using at present forms complexity mostly, useful life is short, and a little less than antijamming capability, cost of manufacture is high, installs complicated.
summary of the invention:
the object of this invention is to provide a kind of DC electromagnetic type time relay and time-delay method.
above-mentioned object realizes by following technical scheme:
a kind of DC electromagnetic type time relay, its composition comprises: base, described base is connected with damped sleeve, described damped sleeve is inner to be connected with iron core, described iron core is connected with support, coil respectively, and described support is connected with reaction spring, sets of contacts, armature respectively, and described coil is connected with pole shoe, described reaction spring is connected with counter-force adjusting nut, and described armature is connected with non magnetic pad.
described DC electromagnetic type time relay, described iron core and yoke adopt the whole electrical sheet of cylinder, and iron core and yoke are become one.
described DC electromagnetic type time relay, described base forms with aluminium base casting.
described DC electromagnetic type time relay, described non magnetic pad is used p-cu peel to make.
a kind of time-delay method of DC electromagnetic type time relay, the method comprises the steps: when the coil electricity of relay, in magnetic circuit, produce magnetic flux, when magnetic flux is increased to can make numerical value that armature inhales time, armature starts action, along with reducing of air gap between armature and iron core, magnetic flux also increases, after armature and adhesive unshakable in one's determination, magnetic flux is maximum, when coil electricity, because the operate time of the growth of magnetic flux and armature is very short, so the action of locking contact is almost instantaneous, when coil blackout, electric current drops to zero by instantaneous, main flux corresponding to electric current also reduces rapidly, but because of its rate of change very large, according to Lenz's law, in damping copper sheathing inside, will produce induced potential, and flow through induced current, this electric current produces with the magnetic flux of former main flux equidirectional to stop main flux to decline, so just make the main flux in magnetic circuit decay lentamente, until flux decay is to can not hold armature time, armature just discharges, contact is just correspondingly opened or is closed, so just obtained required time delay.
beneficial effect:
1. the present invention is for guaranteeing the accuracy of relay time delay, must ensure enough charging intervals during relay between in use, and coil electrify time, makes the magnetic flux in armature and iron core reach stationary value completely.If undercharge, does not set up stable magnetic flux, time-lag action will weaken greatly.The charging interval of DC electromagnetic type time relay can not be less than 0.8s, therefore the relay power time must be greater than 1s.
2. the present invention is widely used, and is especially relating to low-voltage electrical apparatus control network facet, and anti-electromagnetic interference capability is strong, superior performance; Structure is simpler, is conventionally used in power cut off delay occasion and DC circuit.There is function of shielding, can effectively suppress the electromagnetic interference by spatial.
3. the adjusting between time relay different delayed time time grade of the present invention (claiming again to regulate on a large scale) can realize by the way of changing damping sleeve.The time delay grade of the time relay depends on material and the parameter of damping sleeve.Because the attenuation process of electric current depends on the time constant T of damping sleeve in damping sleeve, R is less, and T is just larger, and current attenuation is also just slower, and delay time is also just longer.Therefore, the time relay of 5s level generally adopts heavy in section copper sheathing to reduce resistance value, the time relay of 3s level with aluminium cover or small bore copper sheathing to increase resistance value.
4. the corresponding damping sleeve of the time relay of the present invention is all special-purpose, by manufactory's dispensing, can not arbitrarily change.If really need to change the service rating of relay, the corresponding damping sleeve of interchangeable, to guarantee the enough accuracy of time delay of adjusting.
5. the locking contact of relay of the present invention adopts the CI-1 type assembly of standard, and it is convenient to change, and the quantity of Chang Kai and normally closed locking contact can combine on demand.It is contained in the front side of relay.The moving contact rack of its shaft-like bakelite is by the fork controls together with being mechanically anchored in armature, and armature movement, by the upper and lower action of shift fork band moving contact rack, makes locking contact do corresponding switching.
accompanying drawing explanation:
accompanying drawing 1 is structural representation of the present invention;
accompanying drawing 2 is vertical views of accompanying drawing 1.
embodiment:
embodiment 1:
a kind of DC electromagnetic type time relay, its composition comprises: base 1, described base is connected with damped sleeve 2, described damped sleeve is inner to be connected with iron core 3, described iron core is connected with support 4, coil 5 respectively, and described support is connected with reaction spring 6, sets of contacts 7, armature 8 respectively, and described coil is connected with pole shoe 9, described reaction spring is connected with counter-force adjusting nut 10, and described armature is connected with non magnetic pad 11.
embodiment 2:
according to the DC electromagnetic type time relay described in embodiment 1, described iron core and yoke adopt the whole electrical sheet of cylinder, and iron core and yoke are become one.
embodiment 3:
according to the DC electromagnetic type time relay described in embodiment 1 or 2, described base forms with aluminium base casting.
embodiment 4:
according to the DC electromagnetic type time relay described in embodiment 1 or 2, described non magnetic pad is used p-cu peel to make.
embodiment 5:
a kind of time-delay method of DC electromagnetic type time relay, it is characterized in that: the method comprises the steps: when the coil electricity of relay, in magnetic circuit, produce magnetic flux, when magnetic flux is increased to can make numerical value that armature inhales time, armature starts action, along with reducing of air gap between armature and iron core, magnetic flux also increases, after armature and adhesive unshakable in one's determination, magnetic flux is maximum, when coil electricity, because the operate time of the growth of magnetic flux and armature is very short, so the action of locking contact is almost instantaneous, when coil blackout, electric current drops to zero by instantaneous, main flux corresponding to electric current also reduces rapidly, but because of its rate of change very large, according to Lenz's law, in damping copper sheathing inside, will produce induced potential, and flow through induced current, this electric current produces with the magnetic flux of former main flux equidirectional to stop main flux to decline, so just make the main flux in magnetic circuit decay lentamente, until flux decay is to can not hold armature time, armature just discharges, contact is just correspondingly opened or is closed, so just obtained required time delay.
embodiment 6:
the time-delay method of above-mentioned DC electromagnetic type time relay, in allowing time range, the control method of delay time has two kinds:
(1) regulate reaction spring
this adjusting can be continuous and trickle, is called fine tuning.Under the constant prerequisite of the thickness that keeps non magnetic pad, reaction spring is twisted tightlyer, and reaction force is just larger, and delay time is just shorter; Otherwise reaction force is less, delay time is longer.But reaction spring can not be adjusted get Tai Song, otherwise have by remanent magnetism, cling the danger not discharging.
(2) regulate non magnetic pad
this adjusting is step-like, both discontinuous, can not do trace adjustment, is called coarse adjustment.Keeping under the prerequisite that reaction spring is constant, non magnetic pad is thicker, and the air gap of magnetic circuit and magnetic resistance are just larger, and the electromagnetic attraction producing under identical magnetic potential is just less, and armature just more easily discharges, therefore the corresponding shortening of delay time; Otherwise the corresponding prolongation of delay time.But non magnetic pad can not be too thin or cancels, and too thin easy damage forms without pad, without pad, the not releasable phenomenon of the armature of relay will occur.
Claims (5)
1. a DC electromagnetic type time relay, its composition comprises: base, it is characterized in that: described base is connected with damped sleeve, described damped sleeve is inner to be connected with iron core, described iron core is connected with support, coil respectively, and described support is connected with reaction spring, sets of contacts, armature respectively, and described coil is connected with pole shoe, described reaction spring is connected with counter-force adjusting nut, and described armature is connected with non magnetic pad.
2. DC electromagnetic type time relay according to claim 1, is characterized in that: described iron core and yoke adopt the whole electrical sheet of cylinder, and iron core and yoke are become one.
3. DC electromagnetic type time relay according to claim 1 and 2, is characterized in that: described base forms with aluminium base casting.
4. DC electromagnetic type time relay according to claim 1 and 2, is characterized in that: described non magnetic pad is used p-cu peel to make.
5. the time-delay method of a DC electromagnetic type time relay, it is characterized in that: the method comprises the steps: when the coil electricity of relay, in magnetic circuit, produce magnetic flux, when magnetic flux is increased to can make numerical value that armature inhales time, armature starts action, along with reducing of air gap between armature and iron core, magnetic flux also increases, after armature and adhesive unshakable in one's determination, magnetic flux is maximum, when coil electricity, because the operate time of the growth of magnetic flux and armature is very short, so the action of locking contact is almost instantaneous, when coil blackout, electric current drops to zero by instantaneous, main flux corresponding to electric current also reduces rapidly, but because of its rate of change very large, according to Lenz's law, in damping copper sheathing inside, will produce induced potential, and flow through induced current, this electric current produces with the magnetic flux of former main flux equidirectional to stop main flux to decline, so just make the main flux in magnetic circuit decay lentamente, until flux decay is to can not hold armature time, armature just discharges, contact is just correspondingly opened or is closed, so just obtained required time delay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310709670.6A CN103646822A (en) | 2013-12-21 | 2013-12-21 | Direct current electromagnetic type time relay and time delay method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310709670.6A CN103646822A (en) | 2013-12-21 | 2013-12-21 | Direct current electromagnetic type time relay and time delay method |
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| Publication Number | Publication Date |
|---|---|
| CN103646822A true CN103646822A (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310709670.6A Withdrawn CN103646822A (en) | 2013-12-21 | 2013-12-21 | Direct current electromagnetic type time relay and time delay method |
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| CN (1) | CN103646822A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161365A (en) * | 2015-08-31 | 2015-12-16 | 贵州天义电器有限责任公司 | High-reliability time relay |
| CN105374631A (en) * | 2015-11-17 | 2016-03-02 | 成都科创佳思科技有限公司 | Electromagnetic relay |
| CN105590808A (en) * | 2016-02-29 | 2016-05-18 | 上海首泓液磁科技有限公司 | Damping relay and applications thereof |
-
2013
- 2013-12-21 CN CN201310709670.6A patent/CN103646822A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161365A (en) * | 2015-08-31 | 2015-12-16 | 贵州天义电器有限责任公司 | High-reliability time relay |
| CN105374631A (en) * | 2015-11-17 | 2016-03-02 | 成都科创佳思科技有限公司 | Electromagnetic relay |
| CN105590808A (en) * | 2016-02-29 | 2016-05-18 | 上海首泓液磁科技有限公司 | Damping relay and applications thereof |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20140319 |