CN113284764A - Electromagnetic type ac contactor fault self-healing device - Google Patents
Electromagnetic type ac contactor fault self-healing device Download PDFInfo
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- CN113284764A CN113284764A CN202110476118.1A CN202110476118A CN113284764A CN 113284764 A CN113284764 A CN 113284764A CN 202110476118 A CN202110476118 A CN 202110476118A CN 113284764 A CN113284764 A CN 113284764A
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- healing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/002—Monitoring or fail-safe circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
Abstract
The invention provides a fault self-healing device of an electromagnetic alternating current contactor, which comprises a main electromagnetic control mechanism, a main electromagnetic control mechanism and a fault self-healing device, wherein the main electromagnetic control mechanism is used for manually opening and closing a brake and keeping a state; the self-healing electromagnetic control mechanism is used for automatically repairing the closing failure when the main electromagnetic control mechanism is closed and failed; the contact module comprises a main upper fixed contact, a main lower fixed contact, a main upper fixed silver contact, a main lower fixed silver contact, an active contact system, a conductive detection element, a self-healing upper fixed contact system, a self-healing lower fixed contact system, a self-healing upper fixed silver contact, a self-healing lower fixed silver contact and a self-healing moving contact system; and the arc extinguishing module is used for arc extinguishing of the contactor. The substantial effects of the invention are as follows: after the main electromagnetic control mechanism breaks down, the self-healing electromagnetic control mechanism is automatically started, the problem that the normal power supply of an enterprise is influenced after the electromagnetic alternating current contactor breaks down is solved, the service life of the contactor can be prolonged, the on-off performance is improved, and the economic loss of the enterprise is avoided.
Description
Technical Field
The invention relates to the field of electricity safety, in particular to a fault self-healing device of an electromagnetic alternating current contactor.
Background
The electromagnetic AC contactor mainly comprises an electromagnetic control mechanism, a contact system, an arc extinguishing system and other parts. The electromagnetic control mechanism comprises a coil, a mountain-shaped embedded coil iron core seat, a long arm iron core and a rotating shaft, and the contact system comprises a static contact system, a movable contact system and the like. The electromagnetic alternating current contactor is widely applied to a power grid, is commonly used for being matched with a residual current operated protector in rural power grid public transformation, and plays a key role in separating (combining) a power supply loop when personal electric shock, fire and electric leakage accidents are prevented. The electromagnetic alternating current contactor plays an important role in the forward (backward) starting of the motor in enterprises, if certain phase factors such as poor contact of a fixed contact system and a movable contact system, coil burnout, incorrect iron core position and the like occur in the operation of the electromagnetic alternating current contactor, customer household appliances or motors connected into a rural power grid power supply loop are burnt out, and the enterprises directly cause accidents such as burnout of large-capacity motor windings and the like, so that huge economic loss is caused.
Patent document No. CN208780791U discloses a circuit for detecting a pull-in condition of a contactor, which includes a voltage acquisition unit, a voltage processing unit, and a hysteresis comparison unit, wherein the voltage acquisition unit is used for acquiring voltages at two ends of a buffer resistor connected with the contactor; the voltage processing unit is used for receiving the voltages at the two ends of the buffer resistor input by the voltage acquisition unit, amplifying the voltages at the two ends of the buffer resistor, limiting the amplitude and carrying out level lifting processing; and the hysteresis comparison unit is used for receiving the voltages at the two ends of the buffer resistor processed by the voltage processing unit, comparing the voltages with the reference voltage, acquiring a comparison result and outputting a signal corresponding to the comparison result. The invention thoroughly solves the problem of misinformation of the auxiliary contact of the contactor due to poor suction caused by dust accumulation, but can not complete self-healing operation after the poor suction is detected, thereby ensuring the continuity of power supply.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing contactor can not complete self-healing operation after detecting poor suction, and the technical problem of power supply continuity is guaranteed.
In order to solve the technical problem, the invention provides an electromagnetic type alternating current contactor fault self-healing device, which comprises a main electromagnetic control mechanism, a main electromagnetic control mechanism and a fault self-healing mechanism, wherein the main electromagnetic control mechanism is used for manually opening and closing a switch and keeping a state;
the self-healing electromagnetic control mechanism is used for automatically repairing the closing failure when the main electromagnetic control mechanism is closed and failed;
the contact module comprises a main upper fixed contact, a main lower fixed contact, a main upper fixed silver contact, a main lower fixed silver contact, an active contact system, a conductive detection element, a self-healing upper fixed contact system, a self-healing lower fixed contact system, a self-healing upper fixed silver contact, a self-healing lower fixed silver contact and a self-healing moving contact system; and the arc extinguishing module is used for arc extinguishing of the contactor.
Preferably, the contact module comprises three groups of A phase, B phase and C phase. The invention can be flexibly applied to circuits with various phases.
Preferably, the main electromagnetic control mechanism comprises a main coil, a main mountain-shaped embedded coil iron core seat, a main long arm iron core, a main rotating shaft and a normally closed auxiliary contact.
Preferably, the self-healing electromagnetic control mechanism comprises a self-healing coil, a self-healing mountain-shaped embedded coil iron core seat, a self-healing long arm iron core, a self-healing rotating shaft and a self-healing relay.
Preferably, the conductive detection element comprises a high-temperature-resistant insulating base, a detection conductive silver contact, a compression spring piece, an upper contact, a lower contact, an upper contact lead end and a lower contact lead end, the high-temperature-resistant insulating base is embedded in the main lower static contact, the detection conductive silver contact is embedded in the center of the interior of the conductive detection element, and the plane where the high-temperature-resistant insulating base and the main lower static contact are located, and the plane where the detection conductive silver contact and the main lower static contact are located protrude by 3 mm.
Preferably, the detection conductive silver contact comprises an A-phase detection conductive silver contact, a B-phase detection conductive silver contact and a C-phase detection conductive silver contact, one end of the A-phase detection conductive silver contact, one end of the B-phase detection conductive silver contact and one end of the C-phase detection conductive silver contact are connected with the self-healing coil, and the other end of the A-phase detection conductive silver contact and the other end of the B-phase detection conductive silver contact are connected with a zero line of the main electromagnetic control mechanism main coil.
Preferably, when the pressure of any one group of contact system of the three groups of conductive detection elements of the A phase, the B phase and the C phase reaches that any one group of detection conductive silver contacts is pressed by a spring piece to enable the upper contact to be separated from the lower contact, the electromagnetic alternating current contactor fault self-healing device only realizes power supply through the main electromagnetic control mechanism system, otherwise, when the pressure of any one group of contact system does not reach that the upper contact is separated from the lower contact, the self-healing electromagnetic control mechanism acts to supply power, and realizes double-path parallel power supply with the main electromagnetic control mechanism system, so that the function of self-healing after the main electromagnetic control mechanism of the electromagnetic alternating current contactor is in fault is realized.
The substantial effects of the invention are as follows: after the main electromagnetic control mechanism breaks down, the self-healing electromagnetic control mechanism is automatically started, the problem that the normal power supply of an enterprise is influenced after the electromagnetic alternating current contactor breaks down is solved, the service life of the contactor can be prolonged, the on-off performance is improved, and the economic loss of the enterprise is avoided.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment.
FIG. 2 is a schematic diagram of a backside structure according to an embodiment.
FIG. 3 is a schematic diagram of an electrical relationship according to an embodiment.
FIG. 4 is a schematic structural diagram of a conductive sensing element according to an embodiment.
In the figure: 101. the self-healing electromagnetic control device comprises a main electromagnetic control mechanism, 103, a main coil, 102, a main mountain-shaped embedded coil iron core seat, 104, a main long arm iron core, 105, a main rotating shaft, 106, a normally closed auxiliary contact, 107, a main upper fixed static contact, 109, a main lower static contact, 110, an active contact system, 111, a main upper fixed silver contact, 112, a main lower fixed silver contact, 113, an A-phase conductive detection element, 114, an insulating base, 115, a detection conductive silver contact, 116, a B-phase conductive detection element, 117, a C-phase conductive detection element, 118, a pressure spring piece, 201, a self-healing electromagnetic control mechanism, 202, a self-healing mountain-shaped embedded coil iron core seat, 203, a self-healing coil, 204, a self-healing long arm iron core, 205, a self-healing rotating shaft, 206, a self-healing relay, 207, an upper fixed static contact system, 209, a self-healing lower static contact system, 210, a self-healing system, a moving contact, 211, a self-healing upper fixed silver contact, a self-healing long arm iron core, 105, a self-healing coil, a self-healing detection element, a self-healing contact, a self-healing coil, 212. The self-healing lower part fixed silver contact comprises 10 self-healing lower part fixed silver contacts, 11 self-healing lower part fixed silver contacts, 12 self-healing lower part fixed silver contacts, 13 self-healing lower part fixed silver contacts, 18 self-healing lower part fixed silver contacts, 19 self-healing lower part lead-in copper connecting sheets, 12 self-leading wire leading-out fixing bolts, 13 self-healing lower part fixed silver contacts, 18 self-healing lower part fixed silver contacts, 19 self-healing lower part lead-out connecting sheets, 19 self-healing lower part fixed silver contacts, 20 self-healing lower part lead-out connecting sheets, 20 self-healing lower part fixed silver contacts, 30 self-healing lower part fixed silver contacts, 34 self-healing lower part lead-healing lower part fixed silver contacts, and 30 self-healing lead-out connecting sheets.
Detailed Description
The following provides a more detailed description of the present invention, with reference to the accompanying drawings.
As shown in fig. 1 or fig. 2, the apparatus of the first embodiment includes a main electromagnetic control mechanism 101, a self-healing electromagnetic control mechanism 201, a first set of contact systems 10, a second set of contact systems 30, a third set of contact systems 50, and an arc extinguishing chamber 40;
a main electromagnetic control mechanism 101 including a main coil 103, a main chevron-shaped coil core holder 102, a main long-arm core 104, a main rotating shaft 105, and a normally-closed auxiliary contact 106;
the self-healing electromagnetic control mechanism 201 comprises a self-healing coil 203, a self-healing mountain-shaped embedded coil iron core seat 202, a self-healing long arm iron core 204, a self-healing rotating shaft 205 and a self-healing relay 206;
the A-phase conductive detection element 113 comprises a high-temperature-resistant insulating base 114, a detection conductive silver contact 115, a compression spring piece 118, an upper contact 119, a lower contact 120, an upper contact lead end 121 and a lower contact lead end 122, wherein when the A-phase conductive detection element is idle or has insufficient downward pressure, the upper contact 119 and the lower contact 120 are in a closed state, and when the detection conductive silver contact 115 is stressed to be pressed downward, the compression spring piece 118 is upwards separated from the lower contact 120 by the lower force of the upper contact 119;
the first set of contact system 10 includes a main upper fixed stationary contact 107, a main lower stationary contact 109, a main upper fixed silver contact 111, a main lower fixed silver contact 112, a main active contact system 110, a conductive detection element 113, a main conductive wire leading-in wiring fixing bolt 12, a leading-in copper connecting sheet 11, a main leading-out wiring fixing bolt 18, a self-healing upper fixed stationary contact system 207, a self-healing lower stationary contact system 209, a self-healing upper fixed silver contact 211, a self-healing lower fixed silver contact 212, a self-healing moving contact system 210, a self-healing leading-in wiring fixing bolt 13, a self-healing leading-out copper connecting sheet 19, and a self-healing leading-out wiring fixing bolt 20. Connecting a main lead-in wiring fixing bolt 12 of a first group of contact system 10 to phase A of a line, connecting a main lead-in wiring fixing bolt 22 of a second group of contact system 30 to phase B of the line, and connecting a main lead-in wiring fixing bolt 32 of a third group of contact system 50 to phase C of the line; leading-out wires and zero wires of leading-in wiring fixing bolts 22 of the second group of contact systems 30 are connected with a main coil 103 of a main electromagnetic control mechanism 101;
phase lines of a user A, B, C receiving terminal are respectively connected with the self-healing lead-out wiring fixing bolt 20 of the first group of contact system 10, the self-healing lead-out wiring fixing bolt 33 of the second group of contact system 30 and the self-healing lead-out wiring fixing bolt 34 of the third group of contact system 50;
the A-phase conductive detection element 113, the B-phase conductive detection element 116 and the C-phase conductive detection element 117 are connected in parallel by connecting an upper contact lead end 121 to a zero line of the main coil 103 in parallel, connecting a lower contact lead end 122 to a connection end of the self-healing coil 203, and connecting the other end of the self-healing coil 203 to a main lead leading-in connection fixing bolt 22 of the second group of contact system 30;
the A-phase conductive detection element 113, the B-phase conductive detection element 116 and the C-phase conductive detection element 117 are respectively embedded in the central position of the main lower fixed silver contact 112 of the first group of contact system 10, the high-temperature resistant insulating base 114 of the A-phase conductive detection element 113 is parallel to the main lower fixed silver contact 112, the plane of the detection conductive silver contact 115 and the plane of the main lower fixed silver contact 112 protrude by 3mm, and the second group of contact system 30 conductive detection element 116 and the third group of contact system 50 conductive detection element 117 are arranged on the same plane.
When the alternating current contactor works, the main electromagnetic control mechanism 101 and the main coil 103 are electrified to enable the main mountain-shaped embedded coil iron core seat 102 to generate a magnetic field, the main long arm iron core 104 is attracted, the main rotating shaft 105 is connected with the base seat to generate inward tension, the three groups of main electromagnetic control mechanism moving contact systems are pulled downwards, the main electromagnetic control mechanism moving contact systems and the main electromagnetic control mechanism static contact system are closed, the alternating current contactor works normally when the alternating current contactor works, because the active contact system 110 is downward contacted with the main lower fixed silver contact 112 under the action of closing power, the conductive detection element 113 detects that the conductive silver contact 115 is stressed and pressed downward, the pressed spring piece 118 is stressed by the lower force, the upper contact 119 is upward separated from the lower contact 120, because the zero line of the self-healing coil 203 connected with the self-healing electromagnetic control mechanism 201 is not connected, the self-healing mountain-shaped embedded coil iron core seat 202 has no magnetic field, and three groups of moving contact systems of the self-healing electromagnetic control mechanism 201 are in an idle state without action. When the pressure of any one group of the contact system of the conductive detecting element 113, the conductive detecting element 116 and the conductive detecting element 117 is not detected, the pressure spring piece 118 of the conductive silver contact 115 is pressed upwards to separate the upper contact 119 from the lower contact 120, the self-healing coil 203 connected to the self-healing electromagnetic control mechanism 201 is powered on, so that the self-healing mountain-shaped inlaid coil iron core seat 202 generates a magnetic field, attracts the self-healing long arm iron core 204, is connected with the self-healing rotating shaft 205 to generate an inward pulling force, so that three groups of moving contact systems of the self-healing electromagnetic control mechanism 201 are pulled downwards, the moving contact system of the self-healing electromagnetic control mechanism 201 and a static contact system of the self-healing electromagnetic control mechanism 201 are closed, the self-healing electromagnetic control mechanism 201 starts to supply power, and the electromagnetic contactor realizes double-path parallel power supply with the main electromagnetic control mechanism 101 system, so that the self-healing electromagnetic control mechanism 201 acts after the main electromagnetic control mechanism 101 of the electromagnetic alternating current contactor fails, and the function of self-healing after the failure is realized.
In the application, if the number of the motors at the installation place of the electromagnetic alternating current contactor fault self-healing device is suddenly increased or expanded, the main coil 103 of the main electromagnetic control mechanism 101 system and the self-healing coil 203 of the self-healing electromagnetic control mechanism 201 system can be connected to a power supply in parallel, when the power is on, the main electromagnetic control mechanism 101 system and the self-healing electromagnetic control mechanism 201 system run simultaneously, and the six groups of moving contact systems and the six groups of static contact systems are closed to work, so that the capacity expansion of the electromagnetic alternating current contactor fault self-healing device is realized.
The above embodiment is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the technical scope of the claims.
Claims (11)
1. The utility model provides an electromagnetic type ac contactor trouble self-healing device which characterized in that: the electromagnetic switch comprises a main electromagnetic control mechanism (101) which is used for manually switching on and off and keeping the state;
the self-healing electromagnetic control mechanism is used for automatically repairing the closing failure when the main electromagnetic control mechanism is closed and failed;
the contact module comprises a main upper fixed contact (107), a main lower fixed contact (109), a main upper fixed silver contact (111), a main lower fixed silver contact (112), an active contact system (110), a conductive detection element (113), a self-healing upper fixed contact system (207), a self-healing lower fixed contact system (209), a self-healing upper fixed silver contact (211), a self-healing lower fixed silver contact (212) and a self-healing moving contact system (210);
and the arc extinguishing module is used for arc extinguishing of the contactor.
2. The electromagnetic ac contactor fault self-healing device according to claim 1, wherein: the contact module comprises three groups of phases A, B and C.
3. The electromagnetic ac contactor fault self-healing device according to claim 1 or 2, wherein: the main electromagnetic control mechanism (101) comprises a main coil (103), a main mountain-shaped coil iron core seat (102), a main long arm iron core (104), a main rotating shaft (105) and a normally closed auxiliary contact (106).
4. The electromagnetic ac contactor fault self-healing device according to claim 3, wherein: the self-healing electromagnetic control mechanism (201) comprises a self-healing coil (203), a self-healing mountain-shaped embedded coil iron core seat (202), a self-healing long arm iron core (204), a self-healing rotating shaft (205) and a self-healing relay (206).
5. The electromagnetic ac contactor fault self-healing device according to claim 4, wherein: the conductive detection element (113) comprises a high-temperature-resistant insulating base (114), a detection conductive silver contact, a compression spring piece, an upper contact, a lower contact, an upper contact lead end and a lower contact lead end, wherein the high-temperature-resistant insulating base is embedded in a main lower static contact, and the detection conductive silver contact is embedded in the center of the interior of the conductive detection element.
6. The electromagnetic ac contactor fault self-healing device according to claim 5, wherein: the plane of the high-temperature resistant insulating base (114) and the detection conductive silver contact (115) is parallel to the plane of the main lower static contact (112) and protrudes by 3 mm.
7. The electromagnetic ac contactor fault self-healing device according to claim 6, wherein: detect conductive silver contact and include that A looks detect conductive silver contact (115), B looks detect conductive silver contact (116) and C looks detect conductive silver contact (117), and A looks detect conductive silver contact (115), B looks detect conductive silver contact (116) and C looks detect conductive silver contact (117) one end and self-healing coil (203) the other end of being connected with main electromagnetic control mechanism (101) main coil (103) zero line.
8. The electromagnetic ac contactor fault self-healing device according to claim 7, wherein: the active contact system (110) is touched the closed dynamic effect of hitting downwards with main lower part fixed silver contact (112), detect electrically conductive silver contact (115) atress with electrically conductive detecting element (113) and push down, contact (119) upwards separates with lower contact (120) on the atress of compression spring leaf (118), owing to connect self-healing electromagnetic control mechanism (201) self-healing coil (203) zero line and do not have the connection, self-healing chevron is inlayed coil iron core seat (202) and is not had the magnetic field, the three moving contact systems of self-healing electromagnetic control mechanism (201) are motionless in idle state.
9. The electromagnetic ac contactor fault self-healing device according to claim 8, wherein: when the pressure of any one group of contact system of the conductive detection element (113), the conductive detection element (116) and the conductive detection element (117) cannot reach the pressure of the detection conductive silver contact (115) and the pressed spring piece (118) upwards separates the upper contact (119) from the lower contact (120), the self-healing coil (203) connected to the self-healing electromagnetic control mechanism (201) is electrified, the self-healing mountain-shaped embedded coil iron core seat (202) generates a magnetic field, the self-healing long arm iron core (204) is attracted, the self-healing rotating shaft (205) is connected to generate inward pulling force, the three groups of moving contact systems of the self-healing electromagnetic control mechanism (201) are pulled downwards, the moving contact system of the self-healing electromagnetic control mechanism (201) is closed with the static contact system of the self-healing electromagnetic control mechanism (201), and the self-healing electromagnetic control mechanism (201) starts to supply power.
10. The electromagnetic ac contactor fault self-healing device according to claim 8 or 9, wherein: when electrically conductive detecting element (113), electrically conductive detecting element (116), any a set of contact system pressure of electrically conductive detecting element (117) reaches and detects electrically conductive silver contact (115) pressurized spring piece (118) and upwards make upper contact (119) and lower contact (120) separation, electromagnetic type alternating current contactor fault self-healing device only realizes the power supply with main electromagnetic control mechanism (101) system, otherwise, any a set of contact system pressure does not reach upper contact (119) and lower contact (120) separation action time, self-healing electromagnetic control mechanism (201) action power supply, and realize the parallel power supply of double-circuit with main electromagnetic control mechanism (101) system, realize the function of self-healing behind electromagnetic alternating current contactor main electromagnetic control mechanism (101) trouble.
11. The electromagnetic ac contactor fault self-healing device according to claim 8 or 9, wherein: the main coil (103) of the main electromagnetic control mechanism (101) system and the self-healing electromagnetic control mechanism (201) system self-healing coil (203) are connected to a power supply in parallel, when the power supply is powered on, the main electromagnetic control mechanism (101) system and the self-healing electromagnetic control mechanism (201) system run simultaneously, six groups of moving contact systems and a static contact system are closed to work, and the capacity expansion of the fault self-healing device of the electromagnetic alternating current contactor is realized.
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| CN202110476118.1A CN113284764B (en) | 2021-04-29 | 2021-04-29 | Electromagnetic type ac contactor fault self-healing device |
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| CN202110476118.1A CN113284764B (en) | 2021-04-29 | 2021-04-29 | Electromagnetic type ac contactor fault self-healing device |
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| CN202978240U (en) * | 2012-09-26 | 2013-06-05 | 崔勇 | Breaker closing circuit protecting device and corresponding breaker closing circuit |
| CN105513842A (en) * | 2016-01-08 | 2016-04-20 | 常熟开关制造有限公司(原常熟开关厂） | Switch operating mechanism |
| CN108054065A (en) * | 2018-01-08 | 2018-05-18 | 银河电气有限公司 | A kind of self-healing fast-switching switch |
| CN111610436A (en) * | 2020-04-07 | 2020-09-01 | 福建福清核电有限公司 | Monitoring circuit of closing microswitch of medium-voltage contactor in nuclear power plant |
| CN215527587U (en) * | 2021-04-29 | 2022-01-14 | 国网浙江省电力有限公司湖州供电公司第二名称:湖州电力局 | Electromagnetic type ac contactor fault self-healing device |
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2021
- 2021-04-29 CN CN202110476118.1A patent/CN113284764B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202978240U (en) * | 2012-09-26 | 2013-06-05 | 崔勇 | Breaker closing circuit protecting device and corresponding breaker closing circuit |
| CN105513842A (en) * | 2016-01-08 | 2016-04-20 | 常熟开关制造有限公司(原常熟开关厂） | Switch operating mechanism |
| CN108054065A (en) * | 2018-01-08 | 2018-05-18 | 银河电气有限公司 | A kind of self-healing fast-switching switch |
| CN111610436A (en) * | 2020-04-07 | 2020-09-01 | 福建福清核电有限公司 | Monitoring circuit of closing microswitch of medium-voltage contactor in nuclear power plant |
| CN215527587U (en) * | 2021-04-29 | 2022-01-14 | 国网浙江省电力有限公司湖州供电公司第二名称:湖州电力局 | Electromagnetic type ac contactor fault self-healing device |
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