CN203218198U - Thermo-magnetic residual current breaker tripping mechanism - Google Patents
Thermo-magnetic residual current breaker tripping mechanism Download PDFInfo
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- CN203218198U CN203218198U CN 201320270327 CN201320270327U CN203218198U CN 203218198 U CN203218198 U CN 203218198U CN 201320270327 CN201320270327 CN 201320270327 CN 201320270327 U CN201320270327 U CN 201320270327U CN 203218198 U CN203218198 U CN 203218198U
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Abstract
The utility model relates to a thermo-magnetic residual current breaker tripping mechanism. The thermo-magnetic residual current breaker tripping mechanism is formed by matching a tripping controller with a tripping execution device, wherein the tripping controller mainly comprises a lower voltage direct current power source, a coil, a diode, a CMOS tube, a resistor, a capacitor and a single-chip microcomputer, and the tripping execution device mainly comprises a pull rod, an armature, an armature spring, a fixing sheet, a coil, a permanent magnet, a core, an energy storage spring, a buckle and a buckle spring which are mounted in a magnetic yoke in a compact mode to form a magnetic loop. According to the thermo-magnetic residual current breaker tripping mechanism, the 12V direct current power source is utilized, damage to a breaker, burning of a JP current row and burning injury to an operator caused by direct short circuit at an output end are effectively avoided when an original thermo-magnetic residual current breaker is under a sudden high voltage condition. The thermo-magnetic residual current breaker tripping mechanism improves safety performance of the thermo-magnetic residual current breaker.
Description
Technical field
The utility model relates to the Thermomagnetic type residual current circuit breaker, particularly is applied to a kind of novel tripping mechanism of Thermomagnetic type residual current circuit breaker.
Background technology
Present finding, the tripping function of the Thermomagnetic type residual current circuit breaker of traditional Thermomagnetic type residual current circuit breaker and band reclosing function, main rely on by 380V/220V tripping coil, fly-wheel diode, and the trip circuit formed of 220V relay contact finish.When protected circuit passed through normal current, the electromagnetic force that the electromagnet of described circuit breaker produces was less than the spring tension as reaction force, and armature can not be inhaled moving by electromagnet, and circuit breaker keeps normally operation; And electric current appears in circuit above the overload situations of the several times of normal current; or circuit is when being short-circuited fault; the electromagnetic force that the electromagnet of circuit breaker produces is greater than the spring tension as reaction force; armature is inhaled moving by electromagnet; the relay main contact discharges; under the effect of tripping spring separately, the electric current in the line disconnection, thereby play the short-circuit protection effect.There is following defective in practice in above-mentioned trip circuit: the attack of hitting high voltages such as voltage and electric grid operating overvoltage, its tripping coil, diode, relay contact apply under the situation at the 380V/220V high pressure, the direct short-circuit of circuit breaker output will be caused, and cause the damage of whole circuit breaker, even cause serious consequences such as JP cabinet electric current row scorification, circuit breaker casing are on fire, burn operating personnel hand, face.It has also restricted the development process of national intelligent grid to a certain extent.
Summary of the invention
The utility model is at above-mentioned defective, proposed to be applied to a kind of novel tripping mechanism of Thermomagnetic type residual current circuit breaker, purpose is to improve by the tripping mechanism to the Thermomagnetic type residual current circuit breaker of existing traditional Thermomagnetic type residual current circuit breaker and band reclosing function, with reliability and the fail safe that improves described circuit breaker, stop the trip circuit of prior art under high pressure surprise attack situation, the blast that causes, accident of hurting sb.'s feelings on fire; And be conducive to advance the intelligent process of building of national grid.
Technical solution of the present utility model
The tripping mechanism that is applied to the Thermomagnetic type residual current circuit breaker that the utility model is alleged mainly is made up of tripping controller and tripping actuating device coupling.Described tripping controller mainly connects coil and the diode that is shape in parallel by low-voltage dc power supply, connects field effect transistor and connection in series-parallel resistance R 1, R2 and capacitor C again, connects single-chip microcomputer then and constitutes.Described tripping actuating device mainly is made up of pull bar, armature, armature spring, stator, coil, permanent magnet, iron core, energy-stored spring, snap close and latch spring, and is installed in compactly in the yoke, constitutes a magnetic loop.Wherein, pull bar is connected with energy-stored spring, snap close, latch spring; The below of armature and coil is connected with armature spring, and the top is connected with iron core, permanent magnet successively.
Further technical solution of the present utility model
The low-voltage dc power supply that described tripping controller adopts is 12V.
The coil of described tripping controller and the coil of described tripping actuating device are same coil.
The beneficial effects of the utility model
The utility model tripping controller circuit adopts the 12V low-voltage dc power supply, avoided former Thermomagnetic type residual current circuit breaker effectively under the situation of high pressure surprise attack, cause output direct short-circuit, cause that circuit breaker damages, JP cabinet electric current row scorification, burn operating personnel's serious consequence.Improved the security performance of Thermomagnetic type residual current circuit breaker.
Description of drawings
Accompanying drawing 1 is the connection layout of the utility model tripping controller electronic devices and components.
Accompanying drawing 2 is the structural representation of the utility model tripping actuating device.
Embodiment
As shown in Figure 1,
Described tripping controller is mainly by+12V DC power supply, coil L, sustained diode, field effect transistor Q, resistance R 1, R2 and capacitor C and the circuit that connects and composes with the single-chip microcomputer signal.Wherein coil L and diode D parallel connection, resistance R 1 and R2 series connection back and capacitor C, field effect transistor Q input ground connection in parallel.The single-chip microcomputer signal links to each other with the R2 public connecting end with resistance R 1 ,+12V dc power anode wiring circle L and diode D point in parallel one end ,+12V dc power cathode ground connection.
As shown in Figure 2,
Described tripping actuating device mainly by pull bar 1, armature spring 2, stator 3, armature 4,, coil 6, permanent magnet 7, iron core 8, energy-stored spring 9, snap close 10 and latch spring 11, plug-in unit 12 form.And be installed in compactly in the yoke 5, be connected with tripping controller sustained diode two ends by plug-in unit 12.
Under the normality, iron core keeps attracting state under the effect of permanent magnet, and the stored energy mechanism of being made up of energy-stored spring, snap close, latch spring, pull bar is in the energy storage state.Detect single-chip microcomputer output overloading or the short circuit of major loop when the electric loop of tripping controller, when the residual current value signal reaches operating value, tripping coil L alives and produces opposing magnetic field (coil of this coil and tripping actuating device is same coil), magnetic force deficiency in the coil is so that iron core keeps attracting state, iron core ejects and promotes snap close, energy-stored spring is released energy, and the draw bar that drives in the pull bar pulling circuit breaker makes breaker open operation.
To sum up, the utility model can reach the goal of the invention of expection.
Claims (3)
1. Thermomagnetic type residual current circuit breaker tripping mechanism, it is characterized in that: it mainly is made up of tripping controller and tripping actuating device coupling, described tripping controller mainly connects coil and the diode that is shape in parallel by low-voltage dc power supply, connect field effect transistor and connection in series-parallel resistance R 1, R2 and capacitor C again, connect single-chip microcomputer then and constitute; Described tripping actuating device mainly is made up of pull bar, armature, armature spring, stator, coil, permanent magnet, iron core, energy-stored spring, snap close and latch spring, and be installed in the yoke compactly, constitute a magnetic loop, wherein, pull bar is connected with energy-stored spring, snap close, latch spring; The below of armature and coil is connected with armature spring, and the top is connected with iron core, permanent magnet successively.
2. Thermomagnetic type residual current circuit breaker tripping mechanism according to claim 1 is characterized in that: the low-voltage dc power supply that described tripping controller adopts is 12V.
3. Thermomagnetic type residual current circuit breaker tripping mechanism according to claim 1, it is characterized in that: the coil of described tripping controller and the coil of described tripping actuating device are same coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320270327 CN203218198U (en) | 2013-05-17 | 2013-05-17 | Thermo-magnetic residual current breaker tripping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320270327 CN203218198U (en) | 2013-05-17 | 2013-05-17 | Thermo-magnetic residual current breaker tripping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203218198U true CN203218198U (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320270327 Expired - Lifetime CN203218198U (en) | 2013-05-17 | 2013-05-17 | Thermo-magnetic residual current breaker tripping mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203218198U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922838A (en) * | 2018-09-28 | 2018-11-30 | 厦门大恒科技有限公司 | A kind of SCB switch and its automatic reclosing formula SCB stacked switch being resistant to lightning current |
| CN109637909A (en) * | 2018-12-19 | 2019-04-16 | 温州云鲲智能电气有限公司 | A kind of tripping power mechanism directly driven with residual current and its adjustment method |
-
2013
- 2013-05-17 CN CN 201320270327 patent/CN203218198U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922838A (en) * | 2018-09-28 | 2018-11-30 | 厦门大恒科技有限公司 | A kind of SCB switch and its automatic reclosing formula SCB stacked switch being resistant to lightning current |
| CN109637909A (en) * | 2018-12-19 | 2019-04-16 | 温州云鲲智能电气有限公司 | A kind of tripping power mechanism directly driven with residual current and its adjustment method |
| CN109637909B (en) * | 2018-12-19 | 2024-05-03 | 温州云鲲智能电气有限公司 | Tripping power mechanism directly driven by residual current and debugging method thereof |
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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: 20130925 |