CN201725725U - Snap-action vacuum contactor - Google Patents
Snap-action vacuum contactor Download PDFInfo
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- CN201725725U CN201725725U CN2010201993038U CN201020199303U CN201725725U CN 201725725 U CN201725725 U CN 201725725U CN 2010201993038 U CN2010201993038 U CN 2010201993038U CN 201020199303 U CN201020199303 U CN 201020199303U CN 201725725 U CN201725725 U CN 201725725U
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- vacuum contactor
- contactor
- electromagnet
- capacitor
- snap
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Abstract
The utility model relates to the electric power control technology, particularly relates to a vacuum contactor, and discloses a snap-action vacuum contactor which realizes charging and discharging via a capacitor and aims to overcome the shortage that the vacuum contactor in the prior art is difficult to be started on the condition of insufficient power supply capacity. The technical scheme includes that the snap-action vacuum contactor comprises a contactor, an electromagnet and an action mechanism, and the electromagnet is connected with the contactor through the action mechanism, the snap-action vacuum contactor is characterized in that an electromagnet coil is connected with a capacitor through a discharge switch, and the capacitor is connected with a direct-current power source through a charging loop. The snap-action vacuum contactor can reduce requirements to starting power, is started on the condition that power supply capacity is insufficient severely, further matches with the direct-acting electromagnet, and can increase switching-on speed. In addition, the technical scheme is mainly used for JCZ5 series of vacuum contactors.
Description
Technical field
The utility model relates to power control technology, particularly a kind of vacuum contactor.
Background technology
Vacuum contactor, as JCZ5 series vacuum contactor etc., be mainly used in department and industrial enterprise's adapted electric systems such as metallurgy, mine, petrochemical industry, water conservancy, building, be used for controlling power consumption equipments such as high-tension motor, transformer and capacitive load, be specially adapted to various frequent operations field.One partly is made of vacuum contactor contactor, electromagnet, actuating mechanism, arc control device etc.Probe of contactor etc. place in the arc control device, and its operation control is finished by actuating mechanism by electromagnet.Mode of operation adopts electromagnetic type, electromagnet energising adhesive armature during combined floodgate, and armature drives the actuating mechanism motion, thus the insulator of pulling arc control device moved end closes a floodgate contactor.Maintaining mechanical the maintenance and the electromagnetism maintenance of contactor "on" position, disjunction control can be artificial mechanism disjunction or Electromagnetic Control disjunction.
The JCZ5 series vacuum contactor of prior art, in the key technical indexes, under the driving voltage of direct current 380V, one needs starting power more than the 500W.But under the situation of output power wretched insufficiency, its starting power even do not reach 100W, in this case, vacuum contactor starts difficulty, has a strong impact on finishing of contactor making process.On the other hand prior art JCZ5 series vacuum contactor closing time one about 26ms, can not satisfy the occasion needs that ask for something closes a floodgate fast, its scope of application is received restriction.
The utility model content
Technical problem to be solved in the utility model, the shortcoming that is difficult to start at the vacuum contactor of prior art under the situation of output power deficiency provides a kind of capacitor charging/discharging that utilizes to carry out the fast motion vacuum contactor that contactor drives exactly.
The utility model solve the technical problem, the technical scheme that adopts is, the fast motion vacuum contactor, comprise contactor, electromagnet, actuating mechanism, described electromagnet is connected with described contactor by actuating mechanism, it is characterized in that described electromagnet coil is connected with capacitor by discharge switch, described capacitor connects DC power supply by charge circuit.
Concrete, described discharge switch is the normally opened contact of relay.
Concrete, described charge circuit is made of current-limiting resistance and charge switch series connection.
Concrete, described charge switch is the normally-closed contact of relay.
Concrete, described electromagnet is a direct drive type electro magnet.
The beneficial effects of the utility model are, can reduce the requirement to starting power, start vacuum contactor under the situation of output power wretched insufficiency; Further cooperate direct drive type electro magnet, can improve closing speed.It is simple that the utility model also has a circuit structure, the characteristics that cost is low.
Description of drawings
Fig. 1 is the charging and discharging circuit schematic diagram;
Fig. 2 is the schematic diagram of embodiment.
Embodiment
Below in conjunction with drawings and Examples, describe technical scheme of the present invention in detail.
The technical solution of the utility model is utilized capacitance energy storage, to the electromagnet coil discharge, contactor is closed a floodgate.When capacitor discharged to electromagnet coil, coil was subjected to electricity to produce magnetic field, and armature is sucked to pole orientation, and drive actions mechanism by the insulator that the touch spring promotion links to each other with movable contact, realizes that contactor closes a floodgate.Behind the combined floodgate,, realize that contactor machinery keeps by the self-locking of arm and clasp.When wanting separating brake clasp is knocked open, realized the contactor separating brake by tripping spring.
Embodiment
Referring to Fig. 1 and Fig. 2, the fast motion vacuum contactor that this is routine comprises parts such as contactor 30, electromagnet 32, actuating mechanism 31, and electromagnet 32 connects 30 insulator by actuating mechanism 31 and contactor and is connected (as shown in Figure 2).This routine electromagnet 32 is selected EVS direct drive type electro magnet for use, and contactor 30 adopts JCZ5 series contactor.The coil 3 of electromagnet 32 is connected with capacitor 2 by discharge switch 12 among Fig. 1, and capacitor 2 is connected the 380V DC power supply by current-limiting resistance 1 charge circuit that 11 series connection constitute with charge switch.
EVS direct drive type electro magnet combines with the clapper-type kind of drive that JCZ5 series contactor uses, and has improved the efficient of actuating mechanism.Improve 50% according to calculating and test to draw than electromagnetic efficiency with common clapper-type structure with EVS direct drive type electro magnet.Because EVS direct drive type electro magnet adopts the plug-in type iron core, simultaneously under the very fast situation of closing speed, because the employed clapper-type transmission mechanism of JCZ5 series contactor, make the direction of actuating mechanism motion parts vertical with the direction of arc control device motion parts, can vibratively not superpose, can be suitable reduce to close a floodgate the time the contact bounce time.In conjunction with the advantage of electromagnet 32 and contactor 30, learn from other's strong points to offset one's weaknesses.Actuating mechanism of the present utility model adopts lever amplification principle, in the move distance that reduces the electromagnet moving component, guarantee arc control device open distance and overtravel is constant.In this example, the motion parts distance is 2.5mm; Arc control device are opened apart from being 3mm; Overtravel is 0.8mm.The coil 3 of this routine electromagnet 32 is when coiling, because coil is inductive load, can produce inductance, thereby the coil current can suppress to close a floodgate the time makes electromagnet can not fully play its power if coil is adjusted improper meeting, influences closing speed.This example according to the size of coil rack, can be born under the situation of electric current at true security gate ratio and enamelled wire when coil winding, selects the least possible lock number of thick as far as possible enamelled wire coiling for use, is beneficial to reduce inductance, increases the electric current when closing a floodgate.By formula, F ∝ WI; F=ma; A=s/t
2As can be known, the magnetic force F that coil produces is proportional to the electric current I that coil flows through, and under the certain situation of move distance s and motion parts quality m, improves coil stream I, just can reduce closing time t.
This routine capacitor 2 is selected withstand voltage 450V for use, the electrolytic capacitor of capacity 680 μ F, capacitor 2 charging voltage 380V.The instantaneous relase maximum power can reach 3800W after charging was finished.Capacitor is about 15ms discharge time.
The vacuum contactor of same size compares on this routine vacuum contactor and the present market, and product has 2 advantages on performance: 1, starting power; Now the starting power of the 3.6kV vacuum contactor on the market one about 600W, this routine product is owing to be that capacitor 2 chargings are realized driving with coil 3 discharges of 2 pairs of electromagnet 32 of capacitor again.Power to capacitor 2 chargings is very little, and only relevant with current-limiting resistance 1, what select for use among Fig. 1 is the resistance of 1.5K Ω, uses the DC380V voltage charging, and charging current only is 0.25A, and calculating instantaneous maximum power so also only needs less than 100W.Under under powered situation, can start vacuum contactor like this.2, closing time; The closing time of existing home products such as JCZ5 series one about 26ms, the closing time of this routine product is 1/3 of existing product at 8～9ms.
Claims (7)
1. fast motion vacuum contactor, comprise contactor, electromagnet, actuating mechanism, described electromagnet is connected with described contactor by actuating mechanism, it is characterized in that, described electromagnet coil is connected with capacitor by discharge switch, and described capacitor connects DC power supply by charge circuit.
2. fast motion vacuum contactor according to claim 1 is characterized in that, described discharge switch is the normally opened contact of relay.
3. fast motion vacuum contactor according to claim 1 and 2 is characterized in that, described charge circuit is made of current-limiting resistance and charge switch series connection.
4. fast motion vacuum contactor according to claim 3 is characterized in that, described charge switch is the normally-closed contact of relay.
5. fast motion vacuum contactor according to claim 4 is characterized in that, described electromagnet is a direct drive type electro magnet.
6. fast motion vacuum contactor according to claim 3 is characterized in that, described electromagnet is a direct drive type electro magnet.
7. fast motion vacuum contactor according to claim 1 and 2 is characterized in that, described electromagnet is a direct drive type electro magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201993038U CN201725725U (en) | 2010-05-21 | 2010-05-21 | Snap-action vacuum contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201993038U CN201725725U (en) | 2010-05-21 | 2010-05-21 | Snap-action vacuum contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201725725U true CN201725725U (en) | 2011-01-26 |
Family
ID=43494073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201993038U Expired - Lifetime CN201725725U (en) | 2010-05-21 | 2010-05-21 | Snap-action vacuum contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201725725U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350825A (en) * | 2019-08-21 | 2019-10-18 | 苏州艾克威尔科技有限公司 | Motor high pressure soft starting device |
| CN110566711A (en) * | 2019-08-30 | 2019-12-13 | 宁波方太厨具有限公司 | Water valve capable of being automatically closed after power failure of gas water heater and water heater with same |
-
2010
- 2010-05-21 CN CN2010201993038U patent/CN201725725U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350825A (en) * | 2019-08-21 | 2019-10-18 | 苏州艾克威尔科技有限公司 | Motor high pressure soft starting device |
| CN110566711A (en) * | 2019-08-30 | 2019-12-13 | 宁波方太厨具有限公司 | Water valve capable of being automatically closed after power failure of gas water heater and water heater with same |
| CN110566711B (en) * | 2019-08-30 | 2022-01-25 | 宁波方太厨具有限公司 | Water valve capable of being automatically closed after power failure of gas water heater and water heater with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110126 |