CN210091983U - Device for preventing contactor from misoperation - Google Patents
Device for preventing contactor from misoperation Download PDFInfo
- Publication number
- CN210091983U CN210091983U CN201921173328.8U CN201921173328U CN210091983U CN 210091983 U CN210091983 U CN 210091983U CN 201921173328 U CN201921173328 U CN 201921173328U CN 210091983 U CN210091983 U CN 210091983U
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- CN
- China
- Prior art keywords
- contactor
- fast switch
- energy storage
- storage capacitor
- switch
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a prevent contactor malfunction device can solve when main power supply breaks down or the short circuit has a power failure, and the contactor is shut down because of power failure, causes the technical problem that influences arouse great incident even for industrial user. The high-speed switch type contactor further comprises a high-speed switch K1, a high-speed switch K2, an energy storage capacitor C and a controller ZK, wherein the energy storage capacitor C is connected with the contactor coil in parallel through the high-speed switch K2; the fast switch K1 is connected with the L end of the power supply at the inlet end, and the outlet end is connected with the L end of the power supply of the contactor coil; the inlet wire of the fast switch K2 is connected with the outlet wire end of the fast switch K1, and the outlet wire of the fast switch K2 is connected with the inlet wire end of the energy storage capacitor C; the inlet wire of the energy storage capacitor C is connected with the outlet wire end of the fast switch K2, and the outlet wire end of the energy storage capacitor C is connected with the power supply N end; and the output signal end of the controller ZK is respectively connected with the signal ends of the fast switch K1 and the fast switch K2. When mains voltage fluctuates, the utility model discloses can the fast switch to energy storage capacitor supply power, prevent effectively that the contactor from shutting down because of power failure, guarantee contactor continuous operation.
Description
Technical Field
The utility model relates to a contactor protection technical field, concretely relates to prevent contactor malfunction device.
Background
The internal power grid of large and medium enterprises, called intranet for short, is connected with the national power grid, called extranet for short, to form a power supply system. The voltage drop of the whole system can be caused by the short circuit of any branch in the power supply system, and the higher the voltage level of the branch with the short circuit is, the larger the influence surface is, and the larger the drop value is. After a short circuit occurs, the protection device of the branch will act to trip the circuit breaker to remove the failed branch. During the period from short circuit occurrence to fault removal, the system voltage undergoes the process from drop to recovery, and the phenomenon is called "power-on-earth", or "power loss", or "sloshing", "steep drop", etc. in different industries.
At present, when a main power supply, namely a power grid, has a voltage drop of more than 20ms, namely, so-called 'power swing' or short-time power failure, the power consumption sensitive equipment of industrial users, such as a motor, a frequency converter, a high-voltage halogen lamp, relay protection and the like, can cause accidents such as motor rotating speed reduction or stop, frequency converter halt, relay protection action and the like, so that production fluctuation and operation confusion are caused, light people cause product quality accidents, hundreds of thousands of millions of economic losses are caused, heavy people even cause major safety accidents, and huge economic losses and severe social influences are brought to enterprises.
SUMMERY OF THE UTILITY MODEL
The utility model provides a prevent contactor malfunction device can solve power supply system when main power supply breaks down or the short circuit has a power failure, and the contactor is shut down because of power failure, causes the technical problem that influences arouse major safety accident even for industrial user.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a device for preventing malfunction of a contactor, comprising:
the device comprises a quick switch K1, a quick switch K2, an energy storage capacitor C and a controller ZK; the inlet wire of the fast switch K1 is connected with the L end of the power supply, and the outlet wire of the fast switch K1 is connected with the L end of the power supply of the contactor coil; the inlet wire of the fast switch K2 is connected with the outlet wire end of the fast switch K1, and the outlet wire of the fast switch K2 is connected with the inlet wire end of the energy storage capacitor C; the inlet wire of the energy storage capacitor C is connected with the outlet wire end of the fast switch K2, and the outlet wire end of the energy storage capacitor C is connected with the power supply N end; and the output signal end of the controller ZK is respectively connected with the signal ends of the fast switch K1 and the fast switch K2.
The inlet wire of the fast switch K1 is connected with the L end of the power supply, and the outlet wire of the fast switch K1 is connected with the L end of the power supply of the contactor coil; the fast switch K1 is used for continuously supplying power to the coil of the contactor when the power supply is normal.
The inlet wire of the fast switch K2 is connected with the outlet wire end of the fast switch K1, and the outlet wire of the fast switch K2 is connected with the inlet wire end of the energy storage capacitor C; the fast switch K2 is used for supplying power to the coil of the contactor continuously by the power in the energy storage capacitor C when the power fails.
The inlet wire of the energy storage capacitor C is connected with the outlet wire end of the fast switch K2, and the outlet wire end of the energy storage capacitor C is connected with the power supply N end; and the energy storage capacitor C is used for storing electric energy required by the normal operation of the contactor coil when the power supply fails.
The output signal end of the controller ZK is respectively connected with the signal ends of the fast switch K1 and the fast switch K2; the controller ZK is used for detecting the power supply quality of a power supply, and the contactor is effectively prevented from being shut down due to power failure through actions of the quick switch K1 and the quick switch K2.
According to the above technical scheme, the utility model has the advantages of simple structure, switching speed are fast, safe and reliable, when mains voltage appears undulant, the fast switch over supplies power to energy storage capacitor, prevents effectively that the contactor from shutting down because of power failure, guarantees contactor continuous operation.
Drawings
Fig. 1 is an electrical schematic diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
As shown in fig. 1, the device for preventing malfunction of a contactor according to this embodiment includes a fast switch K1, a fast switch K2, an energy storage capacitor C, and a controller ZK; the inlet wire of the fast switch K1 is connected with the L end of the power supply, and the outlet wire of the fast switch K1 is connected with the L end of the power supply of the contactor coil; the inlet wire of the fast switch K2 is connected with the outlet wire end of the fast switch K1, and the outlet wire of the fast switch K2 is connected with the inlet wire end of the energy storage capacitor C; the inlet wire of the energy storage capacitor C is connected with the outlet wire end of the fast switch K2, and the outlet wire end of the energy storage capacitor C is connected with the power supply N end; and the output signal end of the controller ZK is respectively connected with the signal ends of the fast switch K1 and the fast switch K2.
The inlet wire of the fast switch K1 is connected with the L end of the power supply, and the outlet wire of the fast switch K1 is connected with the L end of the power supply of the contactor coil; the fast switch K1 is used for continuously supplying power to the coil of the contactor when the power supply is normal.
The inlet wire of the fast switch K2 is connected with the outlet wire end of the fast switch K1, and the outlet wire of the fast switch K2 is connected with the inlet wire end of the energy storage capacitor C; the fast switch K2 is used for supplying power to the coil of the contactor by the power in the energy storage capacitor C when the power fails.
The inlet wire of the energy storage capacitor C is connected with the outlet wire end of the fast switch K2, and the outlet wire end of the energy storage capacitor C is connected with the power supply N end; and the energy storage capacitor C is used for providing electric energy in the energy storage capacitor C for the contactor coil to continuously supply power when the storage power supply fails.
The output signal end of the controller ZK is respectively connected with the signal ends of the fast switch K1 and the fast switch K2; the controller ZK is used for detecting the power supply quality of a power supply, and the contactor is effectively prevented from being shut down due to power failure through actions of the quick switch K1 and the quick switch K2.
The utility model discloses the theory of operation: the controller ZK real-time detection power supply quality of the system, when detecting that the power supply breaks down, the controller ZK immediately sends the opening command to the quick switch K1, sends the closing command to the quick switch K2, and the electric energy in the energy storage capacitor C provides the contactor coil for continuous power supply, thereby effectively preventing the contactor from stopping due to power failure and ensuring the continuous operation of the contactor. When the controller ZK detects that the power supply is normal, the controller ZK immediately sends a switching-off command to the quick switch K2 and a switching-on command to the quick switch K1, and the power supply continuously supplies power to the contactor.
This embodiment has simple structure, switching speed is fast, advantages such as safe and reliable, when power supply voltage appears undulant, fast switch to energy storage capacitor supplies power, prevents effectively that contactor from shutting down because of power failure, guarantees contactor continuous operation.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (3)
1. The utility model provides a prevent contactor malfunction device, is based on the contactor which characterized in that:
the high-speed switch type contactor further comprises a high-speed switch K1, a high-speed switch K2, an energy storage capacitor C and a controller ZK, wherein the energy storage capacitor C is connected with the contactor coil in parallel through the high-speed switch K2;
the inlet wire of the fast switch K1 is connected with the L end of the power supply, and the outlet wire of the fast switch K1 is connected with the L end of the power supply of the contactor coil;
the inlet wire of the fast switch K2 is connected with the outlet wire end of the fast switch K1, and the outlet wire of the fast switch K2 is connected with the inlet wire end of the energy storage capacitor C;
the inlet wire of the energy storage capacitor C is connected with the outlet wire end of the fast switch K2, and the outlet wire end of the energy storage capacitor C is connected with the power supply N end;
and the output signal end of the controller ZK is respectively connected with the signal ends of the fast switch K1 and the fast switch K2.
2. The malfunction prevention device of a contactor according to claim 1, wherein: the fast switch K1 is used for continuously supplying power to the coil of the contactor when the power supply is normal.
3. The malfunction prevention device of a contactor according to claim 1, wherein: the fast switch K2 is used for supplying power to the coil of the contactor continuously by the power in the energy storage capacitor C when the power fails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921173328.8U CN210091983U (en) | 2019-07-24 | 2019-07-24 | Device for preventing contactor from misoperation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921173328.8U CN210091983U (en) | 2019-07-24 | 2019-07-24 | Device for preventing contactor from misoperation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210091983U true CN210091983U (en) | 2020-02-18 |
Family
ID=69485421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921173328.8U Expired - Fee Related CN210091983U (en) | 2019-07-24 | 2019-07-24 | Device for preventing contactor from misoperation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210091983U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379674A (en) * | 2019-07-24 | 2019-10-25 | 安徽徽电科技股份有限公司 | One kind prevents contactor from malfunctioning device |
-
2019
- 2019-07-24 CN CN201921173328.8U patent/CN210091983U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379674A (en) * | 2019-07-24 | 2019-10-25 | 安徽徽电科技股份有限公司 | One kind prevents contactor from malfunctioning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200218 Termination date: 20210724 |