An anti-bounce contactor
By adding an auxiliary DC coil and a voltage fluctuation logic judgment circuit to the AC contactor, the problems of high difficulty in modifying traditional anti-voltage fluctuation contactors and insufficient logic judgment are solved, thus achieving stable operation and reliability of the equipment under voltage fluctuation conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 连云港石化有限公司
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-29
AI Technical Summary
Traditional anti-power fluctuation solutions require significant investment and are difficult to retrofit in large factories. They cannot effectively protect motors and critical equipment. Existing anti-power fluctuation contactors cannot autonomously make logical judgments and trigger the anti-power fluctuation function in a timely manner during operation.
An auxiliary anti-power fluctuation DC coil and a power fluctuation power storage controllable trigger board are added to the AC contactor, and a power fluctuation logic judgment circuit is integrated to realize autonomous logic judgment and timely triggering of anti-power fluctuation function.
When a voltage spike occurs, an auxiliary coil supplements the electromagnetic force to ensure stable operation of the contactor, accurate logic judgment, and user-adjustable parameter settings, thereby achieving reliable operation of the equipment.
Smart Images
Figure CN224304633U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electrical equipment technology, and specifically relates to an anti-slip contactor. Background Technology
[0002] In factories and the electrical industry, power fluctuations have always been a significant factor affecting safe and stable production. This is especially true in large chemical and processing enterprises, where continuous and reliable production is crucial; power fluctuations in the power grid can cause serious safety accidents and even endanger personal safety.
[0003] In the past few years, our company has experienced partial equipment shutdowns due to power system fluctuations, which has affected safe and stable production and caused significant economic losses. Traditional anti-power-fluctuation solutions mainly rely on UPS or DC power supplies for control power. However, for large factories with numerous motors and critical equipment, using UPS or DC power supplies involves substantial investment and can only be implemented during the design phase, making later modifications difficult or impossible. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model discloses an anti-voltage fluctuation contactor, which proposes a DC auxiliary coil anti-voltage fluctuation function from the design concept, and integrates the functions of anti-voltage fluctuation contactor and anti-voltage fluctuation module into one.
[0005] To achieve the above objectives, the anti-voltage fluctuation design scheme of this utility model is as follows:
[0006] A novel anti-slip contactor includes: a contactor body,
[0007] The contactor body includes main contacts, an armature, a main magnetic AC coil, a constant force spring, and contactor main terminals. The contactor body also features a handheld operation panel communication port, status indicator lights, a mechanical reset button, and secondary terminals. Since the above structure is prior art to those skilled in the art, the applicant will not elaborate further here.
[0008] The core improvement of this utility model is as follows: an auxiliary anti-sloshing DC coil is also provided, which is connected to the sloshing power board;
[0009] The anti-power fluctuation power board includes a rectifier circuit, a controllable power transistor, and an energy storage capacitor;
[0010] The anti-power fluctuation power board is electrically connected to the power fluctuation control trigger board;
[0011] The power sag control trigger board includes a power sag control logic judgment circuit, a power sag trigger circuit, a digital input board, and a digital output board.
[0012] The specific solution of this utility model is to add an anti-voltage fluctuation auxiliary DC coil to the original AC contactor and add a power storage controllable trigger board, including a rectifier circuit, energy storage capacitor, controllable power transistor, etc. It integrates a voltage fluctuation logic judgment board, which can realize autonomous logic judgment under the premise of collecting the operating status of the control circuit before voltage fluctuation, and automatically realize anti-voltage fluctuation triggering according to the logic judgment result and the set time, so as to ensure that the contactor does not disconnect due to low voltage during voltage fluctuation.
[0013] Compared with existing designs, the beneficial effects of this utility model are:
[0014] Compared with existing designs, this anti-sloshing contactor adopts an auxiliary anti-sloshing coil design. When a sloshing occurs and the electromagnetic force of the main control coil is insufficient, the auxiliary anti-sloshing coil is energized by the control trigger to supplement the insufficient electromagnetic force and ensure that the electromagnetic force for attracting remains unchanged.
[0015] Compared with existing designs, this new anti-slip contactor design integrates a slip power storage controllable trigger board and a slip logic judgment board, achieving an integrated design.
[0016] Compared with existing designs, this anti-power fluctuation logic uses three-phase line voltage judgment logic, which makes the anti-power fluctuation logic judgment more accurate. At the same time, the logic judgment board adds adjustable start-up voltage settings, time settings and other related parameters, realizing a user-adjustable, controllable and customizable design. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the anti-sloshing contactor of this utility model;
[0018] Figure 2 This is a basic schematic diagram of the anti-sloshing contactor of this utility model;
[0019] Figure 3 This is the logic control diagram of the anti-sloshing contactor of this utility model. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Example 1
[0022] See Figures 1-3 :
[0023] A novel anti-slip contactor includes: a contactor body 1,
[0024] The contactor body 1 includes a main contact 9, an armature 10, a main magnetic AC coil 13, a constant force spring 11, and a contactor main terminal block 2. The contactor body 1 is equipped with a handheld operation screen communication port 3, a status indicator light 4, a mechanical reset button 6, and secondary terminal blocks 5. Its distinguishing feature is:
[0025] An auxiliary anti-sloshing DC coil 12 is also provided, which is connected to the sloshing power board 7;
[0026] The anti-power fluctuation power board 7 includes a rectifier circuit, a controllable power transistor, and an energy storage capacitor;
[0027] The anti-power fluctuation power board 7 is electrically connected to the power fluctuation control trigger board 8;
[0028] The power sag control trigger board 8 includes a power sag control logic judgment circuit, a power sag trigger circuit, a digital input board, and a digital output board.
[0029] The working principle of this utility model is as follows: Under normal operating conditions: After the relevant control equipment is put into operation, the power fluctuation control trigger board 8 collects relevant status signals and the preset "put in / out" status through the DI input board according to the relevant signals of the peripheral equipment operation. It automatically determines whether to enter the anti-power fluctuation input state. After determining that the input conditions are met, the logic determines to enter the energy storage state, and fills the energy storage capacitor in the anti-power fluctuation power board 7 with DC power, so as to prepare for the power fluctuation action.
[0030] When a power system experiences a voltage dip, the voltage dip control trigger board 8 collects relevant status change signals from the DI input board and compares them with pre-set logic judgments and manually set values. Once the triggering condition is met, the voltage dip control trigger board 8 sends an activation power board 7 to release the energy stored in the capacitor of the anti-voltage dip DC coil 12 of the contactor (the stored energy can ensure reliable energization of the auxiliary coil for 10 minutes), providing the contactor with the magnetic force lost due to voltage drop, ultimately ensuring that the contactor releases under voltage dip conditions and that the operating equipment can continue to operate reliably after the voltage dip ends.
[0031] After a power outage, the power outage control trigger board 8 can indicate the result of the power outage through the configured LED indicator (red) and keep it constantly lit. Only after being manually reset by a handheld device or mechanical reset button connected via network cable can the power outage logic board be reset and enter the next anti-power outage energy storage and logic judgment pre-entry state.
[0032] The power-swing control trigger board 8 is equipped with a "Power" LED indicator (green), a "Run" LED indicator (green), a "Fault" LED indicator (yellow), an "Action" LED indicator (red), a mechanical reset button 6, and a handheld operation screen communication port 3.
Claims
1. A novel anti-slip contactor, comprising: Contactor body (1), The contactor body (1) includes a main contact (9), an armature (10), a main magnetic AC coil (13), a constant force spring (11), and a contactor main terminal block (2). The contactor body (1) is provided with a handheld operation screen communication port (3), a status indicator light (4), a mechanical reset button (6), and a secondary terminal block (5). Its features are: An auxiliary anti-sloshing DC coil (12) is also provided, which is connected to the sloshing power board (7); The anti-power fluctuation power board (7) includes a rectifier circuit, a controllable power transistor, and an energy storage capacitor; The anti-surge power board (7) is electrically connected to the surge control trigger board (8); The power sloshing control trigger board (8) includes a power sloshing control logic judgment circuit, a power sloshing trigger circuit, a digital input board, and a digital output board.
2. The novel anti-slip contactor as described in claim 1, characterized in that, The logic judgment board determines whether to enter the pre-charge energy storage anti-power fluctuation pre-operation state based on the external status signal conditions. When the logic judgment conditions meet the pre-charge energy storage anti-power fluctuation pre-operation conditions, the anti-power fluctuation relay control board automatically controls the power trigger board to charge the energy storage capacitor. After the energy storage capacitor is fully charged, it enters the anti-power fluctuation pre-operation state, and the "Run" LED indicator lights up.
3. The novel anti-slip contactor as described in claim 1, characterized in that, When a voltage drop occurs, the anti-voltage drop contactor compares the Uab, Ubc, and Uac line voltage signals collected by the DI board with the set values. When the voltage drops below the set value, the voltage drop logic judgment board triggers the logic judgment circuit to output "1", which in turn triggers the power controllable trigger board to trigger the energy storage capacitor to discharge the anti-voltage drop DC coil (12), providing the contactor with the magnetic force lost due to the voltage drop, and finally ensuring that the contactor releases under voltage drop conditions.