CN215527592U - Electromagnetic type ac contactor fault self-healing device - Google Patents
Electromagnetic type ac contactor fault self-healing device Download PDFInfo
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- CN215527592U CN215527592U CN202121914716.4U CN202121914716U CN215527592U CN 215527592 U CN215527592 U CN 215527592U CN 202121914716 U CN202121914716 U CN 202121914716U CN 215527592 U CN215527592 U CN 215527592U
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Abstract
The utility model discloses a fault self-healing device of an electromagnetic alternating current contactor, which comprises an electromagnetic control mechanism, a contact system and a self-healing electromagnetic control mechanism, wherein the electromagnetic control mechanism and the self-healing electromagnetic control mechanism are connected with the contact system, the contact system comprises a fault detection module, the self-healing electromagnetic control mechanism comprises a control module, and the control module controls the self-healing electromagnetic control mechanism to act or send out an alarm when the fault detection module detects a fault. The self-healing operation can be immediately completed when poor suction or failure of closing of the electromagnetic control mechanism is detected, and continuous power supply is maintained while safety is ensured.
Description
Technical Field
The utility model relates to an electromagnetic alternating current contactor, in particular to a fault self-healing device of the electromagnetic alternating current contactor.
Background
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.
The traditional electromagnetic alternating current contactor is widely applied, the fault of a contact system and a control mechanism of the device is directly influenced by the running time and frequent action, the fault hidden trouble can not be found in time by visual inspection due to the fact that an arc extinguishing system directly covers the fault, and therefore the fault frequently occurs, the phenomena that a large-capacity motor winding of an enterprise is burnt out, raw materials for processing are directly scrapped and the like are caused, and huge economic loss of the enterprise is caused.
For example, an "intelligent device for voltage drop protection" disclosed in chinese patent literature includes a high-power rectifying circuit D1 and a rectifying circuit D2 connected in parallel to an ac mains, and is characterized in that: one path of an output power supply of the high-power rectifying circuit D1 passes through a direct-current voltage reduction module R1 and then is added to a coil C of the alternating-current contactor through a first switching tube A, the coil C is provided with a clamping control circuit I for judging the state of the alternating-current contactor, and the output end of the clamping control circuit I is connected with a single chip microcomputer S through a conversion control circuit J; the other path of the output power supply of the high-power rectifying circuit D1 is connected with a switching power supply module M through a switching tube module K, the switching power supply module M comprises four paths of outputs, and the first path of output of the switching power supply module M is applied to a coil loop of the contactor through a first voltage stabilizing circuit P1, a voltage adjusting module R2 and a second switching tube B; the second output is used for charging a backup power supply charging module U through a second voltage stabilizing circuit P2; the third output is connected with the driving module T of the first and second switching tubes through a bias power supply P3; the fourth output supplies power to the singlechip through a voltage adjusting module P4; the output end of the voltage adjusting module P4 is connected with a power supply feedback module N, and the output end of the power supply feedback module N is connected with the switch tube module K; the output end of the singlechip S is connected with a first control module E of a first switch tube A and a second control module F of a second switch tube B; the other output end of the single chip microcomputer S controls the voltage drop control module L through the voltage drop conversion module Q to start a backup power supply module O for providing backup power for the coil loop, and the backup power supply module O also supplies power for the single chip microcomputer S through a voltage reduction module V; the single chip microcomputer S is also connected with a sampling module H for collecting signals output by the rectifying circuit D2 and a man-machine interaction and alarm module S1. However, the voltage drop protection circuit only has a voltage drop protection function, cannot identify other fault conditions, cannot completely guarantee equipment safety, has certain limitation, is relatively complex in circuit structure, does not have related processing means after fault, and is relatively low in intelligent degree.
Disclosure of Invention
The utility model mainly solves the problems that the windings of the large-capacity motors of enterprises are burnt and the processed raw materials are directly scrapped due to poor suction of a contactor or failure of closing of an electromagnetic control mechanism in the prior art; the fault self-healing device for the electromagnetic alternating current contactor is provided, when the poor suction or the failure of closing of an electromagnetic control mechanism is detected, the self-healing operation is immediately completed, and the continuous power supply can be maintained while the safety is ensured.
The utility model mainly solves the technical problems through the following technical scheme:
the utility model provides an electromagnetic type ac contactor trouble self-healing device, includes electromagnetic control mechanism, contact system and self-healing electromagnetic control mechanism, electromagnetic control mechanism and self-healing electromagnetic control mechanism all with contact system connects, the contact system includes the fault detection module, self-healing electromagnetic control mechanism includes control module, control module control is when the fault detection module detects the trouble self-healing electromagnetic control mechanism action or send out the police dispatch newspaper.
The traditional electromagnetic alternating current contactor consists of an electromagnetic control mechanism, a contact system and an arc extinguishing device. The electromagnetic control mechanism comprises a coil, a mountain-shaped embedded coil iron core seat, a long arm iron core, a rotating shaft, and normally closed and normally open auxiliary contacts; the contact system comprises six fixed contacts and three movable contacts, the fixed contacts are distributed on the upper part of a base of the electromagnetic alternating current contactor and the lower part of an arc extinguishing device, a gap is reserved between every 2 pairs of the fixed contacts to form a normally open power supply loop, the movable contact is arranged above the fixed contacts, contacts are arranged at two ends of the movable contact and are aligned with the contacts of the fixed contacts below the movable contact, the movable contact is downwards contacted with the fixed contacts, and the gap of the fixed contacts is conducted through a movable contact connecting sheet. The self-healing electromagnetic type alternating current contactor is characterized in that an electromagnetic control mechanism and a contact system are added beside a traditional electromagnetic type alternating current contactor mechanism, the electromagnetic control mechanism is installed on the left side, and a control module is installed at the position of an auxiliary contact.
Preferably, the contact system further comprises a contact group, a self-healing contact group and a connecting sheet, wherein the contact group and the self-healing contact group are connected through the connecting sheet fixed connection, and the fault detection module is arranged on the contact group. The self-healing electromagnetic control mechanism controls the self-healing contact set to act, and the electromagnetic control mechanism controls the contact set.
As preferred, the contact group includes moving contact and static contact, the fault detection module is located between moving contact and the static contact, the self-healing contact group is including self-healing moving contact and self-healing static contact, the static contact with the self-healing static contact passes through the connection piece is connected. When the fault detection module detects that a contact group in the contact system has a fault, the fault information is transmitted to the control module in the self-healing electromagnetic control mechanism, the control module controls the self-healing contact group to be electrified, the self-healing moving contact acts, and double-path parallel power supply is realized.
Preferably, the fault detection module includes a base, a temperature sensor, a pressure column, a temperature sensor lead, a contact lead, a normally closed contact and a wiring row, the fault monitoring module is embedded in the middle of a static contact at the lower portion of the electromagnetic ac contactor, the pressure column is a high temperature resistant insulating pressure column, the base is a high temperature resistant insulating base and is parallel to the plane of the static contact, the top of the temperature sensor protrudes out of the plane where the static contact is located, the base is fixedly connected with the static contact, the wiring row and the normally closed contact are both connected with the base, the wiring row is connected with the normally closed contact through the contact lead, the pressure column is connected with the wiring row through the temperature sensor lead, and the temperature sensor is fixedly connected with the pressure column.
Preferably, the temperature sensor is a sheet temperature sensor, and the surface of the sheet temperature sensor is provided with a mounting fixing piece and a wiring groove. The film temperature sensor is formed by attaching a thermistor, a film and positive and negative lead sealing packages, the appearance is in a regular circle shape, four spring eye-splice installation fixing parts are distributed on the same distance of a round edge, during installation, the lead part of the film temperature sensor is attached to the top of a high-temperature-resistant insulating pressure column downwards, the four spring eye-splice installation fixing parts are inserted into a pressure column body installation hole in an aligning mode, the spring pressure is utilized for fixing, and the positive and negative leads are connected to a wiring row through wiring grooves.
Preferably, the side surface of the pressure column is provided with a lead groove and positive and negative leads. The temperature sensor lead wire is convenient to route.
As preferred, control module includes microprocessor, temperature signal access and self-healing relay, the temperature signal access receives the temperature signal of fault detection module input, microprocessor will temperature signal with set for the threshold value comparison, when temperature value surpassed set for the threshold value in succession 15 times, microprocessor control self-healing control mechanism circular telegram realizes the parallelly connected power supply of double-circuit with electromagnetic control mechanism system, sends "the high temperature" alarm simultaneously. The electromagnetic control mechanism further comprises an electromagnetic alternating current contactor coil, the self-healing electromagnetic control mechanism further comprises a self-healing electromagnetic alternating current contactor group coil, the control module further comprises a 5G communication module, a storage device, an LCD (liquid crystal display), a relay, a self-healing relay, a temperature signal access circuit, an AD (analog-to-digital) conversion circuit, a detection signal output and access circuit, an A/B/C (analog/digital) phase detection voltage access circuit, a voltage sampling circuit, a 220V power supply and a voltage stabilizing and reducing circuit, and the detection signal output and access circuit comprises a detection signal output end and a detection signal access end. The working power supply of the control module is accessed from a 220V power supply, the 220V power supply is connected with a voltage stabilizing and reducing circuit, and the voltage stabilizing and reducing circuit is connected with the microprocessor; the fault detection module wiring bank and the AD conversion circuit are connected with the temperature signal in an access mode and then connected to the microprocessor; the microprocessor is connected with the detection signal output end, and the fault detection module is connected with the detection signal access end; the A/B/C phase of a static contact of a load connected with the electromagnetic alternating current contactor is sequentially connected with an A/B/C phase detection voltage access bar and then connected with a microprocessor through a voltage sampling circuit; the 5G communication module connection, the memory, the LCD, the relay, the self-healing relay and the keyboard input are all connected with the microprocessor; the relay output 220V is connected with the electromagnetic type alternating current contactor coil, and the self-healing relay output 220V is connected with the self-healing electromagnetic type alternating current contactor coil.
Preferably, the control module further comprises a 5G communication module, after the self-healing control mechanism is powered on, when the temperature value continuously exceeds a set threshold value for 15 times, the microprocessor pushes information to the 5G communication module to send an emergency power-off alarm to a remote server, and the microprocessor controls the electromagnetic control mechanism and the self-healing electromagnetic control mechanism to be powered off.
The utility model mainly has the following beneficial effects: the structure is simple, a self-healing electromagnetic control mechanism and a contact system are added beside the traditional electromagnetic alternating current contactor mechanism, and fault self-healing is realized; when the fault can not be self-healed, an alarm is sent out in time for manual maintenance, and the load electrical appliance is prevented from being damaged; when the suction is poor or the closing of the electromagnetic control mechanism is invalid, the self-healing operation can be completed, and the continuity of power supply is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a self-healing electromagnetic ac contactor according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a control module according to an embodiment of the present invention.
Fig. 3 is a diagram of a mounting position of a fault detection module according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a fault detection module according to an embodiment of the present invention.
Fig. 5 is a diagram of the mounting position of the temperature sensor for a thin film according to an embodiment of the present invention.
Fig. 6 is a structural diagram of a temperature sensor for a film according to an embodiment of the utility model.
In the figure: 1. electromagnetic control mechanism, 2, self-healing electromagnetic control mechanism, 3, contact system, 31, static contact, 32, moving contact, 33, connecting sheet, 34, self-healing static contact, 35, self-healing moving contact, 36, fault detection module, 361, temperature sensor, 362, pressure column, 363, temperature sensor lead, 364, contact lead, 365, normally closed contact, 366, wiring bar, 367, base, 3611, lead groove, 3612, positive and negative leads, 3613, installation fixing piece, 3614 and wiring groove.
Detailed Description
The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.
Example (b):
a set of electromagnetic control mechanism and a contact system are added beside a traditional electromagnetic alternating current contactor mechanism, the electromagnetic control mechanism is installed on the left side, and the traditional electromagnetic alternating current contactor is composed of the electromagnetic control mechanism, the contact system and an arc extinguishing device. The electromagnetic control mechanism comprises a coil, a mountain-shaped embedded coil iron core seat, a long arm iron core, a rotating shaft, and normally closed and normally open auxiliary contacts; the contact system comprises six fixed contacts and three movable contacts, the fixed contacts are distributed on the upper part of a base of the electromagnetic alternating current contactor and the lower part of an arc extinguishing device, a gap is reserved between every 2 pairs of the fixed contacts to form a normally open power supply loop, the movable contact is arranged above the fixed contacts, contacts are arranged at two ends of the movable contact and are aligned with the contacts of the fixed contacts below the movable contact, the movable contact is downwards contacted with the fixed contacts, and the gap of the fixed contacts is conducted through a movable contact connecting sheet. The control module is mounted at the auxiliary contact position.
The fault self-healing device of the electromagnetic alternating current contactor comprises an electromagnetic control mechanism 1, a contact system 3 and a self-healing electromagnetic control mechanism 2, wherein the electromagnetic control mechanism 1 and the self-healing electromagnetic control mechanism 2 are connected with the contact system 3. Wherein the contact system includes fault detection module 36, contact group, self-healing contact group and connection piece 33, and contact group passes through connection piece fixed connection with self-healing contact group, and fault detection module locates on the contact group, and connection piece 33 is for switching on the copper connection piece. The self-healing electromagnetic control mechanism controls the self-healing contact set to act, and the electromagnetic control mechanism controls the contact set.
The contact group includes moving contact 31 and static contact 32, and fault detection module 36 locates between moving contact 31 and the static contact 32, and the self-healing contact group includes self-healing moving contact 35 and self-healing static contact 34, and the static contact passes through the connection piece with the self-healing static contact to be connected. When the fault detection module detects that a contact group in the contact system has a fault, the fault information is transmitted to the control module in the self-healing electromagnetic control mechanism, the control module controls the self-healing contact group to be electrified, the self-healing moving contact acts, and double-path parallel power supply is realized. The fault detection module comprises a base 367, a temperature sensor 361, a pressure column 362, a temperature sensor lead 363, a contact lead 364, a normally closed contact 365 and a wiring row 366, the fault detection module is embedded in the middle of a static contact at the lower portion of the electromagnetic alternating current contactor, the pressure column is a high-temperature-resistant insulating pressure column, the base is a high-temperature-resistant insulating base and is parallel to the plane of the static contact, the top of the temperature sensor protrudes 3mm from the plane where the static contact is located, the base is fixedly connected with the static contact, the wiring row and the normally closed contact are both connected with the base, the wiring row is connected with the normally closed contact through the contact lead, the pressure column is connected with the wiring row through the temperature sensor lead, and the temperature sensor is fixedly connected with the pressure column. The temperature sensor is a sheet temperature sensor, and the surface of the sheet temperature sensor is provided with a mounting fixing piece 3613 and a wiring groove 3614. The flake temperature sensor is formed by attaching a thermistor, a film and positive and negative lead sealing bags, the appearance is in a regular circle shape, four spring eye-splice installation fixing pieces are distributed on the same distance of a round edge, during installation, the lead part of the flake temperature sensor is attached to the top of a high-temperature-resistant insulating pressure column downwards, the four spring eye-splice installation fixing pieces are inserted into a pressure column body installation hole in an aligning mode, the four spring eye-splice installation fixing pieces are fixed through spring pressure, and the positive and negative leads are connected to a wiring bar through a wiring groove 3614. The side of the pressure column is provided with a lead slot 3611 and positive and negative leads 3612, which is convenient for the temperature sensor lead to be wired.
The self-healing electromagnetic control mechanism comprises a control module, and the control module controls the self-healing electromagnetic control mechanism to act or give an alarm when the fault detection module detects a fault. The control module comprises a microprocessor, a temperature signal access circuit, a self-healing relay, a 5G communication module, a memory, an LCD (liquid crystal display), a relay, an AD (analog-to-digital) conversion circuit, a detection signal output and access circuit, an A/B/C phase detection voltage access circuit, a voltage sampling circuit, a 220V power supply and a voltage stabilizing and reducing circuit, the electromagnetic control mechanism further comprises an electromagnetic alternating current contactor coil, the self-healing electromagnetic control mechanism further comprises a self-healing electromagnetic alternating current contactor group coil, and the control module further comprises a control module. The working power supply of the control module is accessed from a 220V power supply, the 220V power supply is connected with a voltage stabilizing and reducing circuit, and the voltage stabilizing and reducing circuit is connected with the microprocessor; the fault detection module wiring bank and the AD conversion circuit are connected with the temperature signal in an access mode and then connected to the microprocessor; the microprocessor and the fault detection module are connected with the detection signal output and access; the A/B/C phase of a static contact of a load connected with the electromagnetic alternating current contactor is sequentially connected with an A/B/C phase detection voltage access bar and then connected with a microprocessor through a voltage sampling circuit; the 5G communication module connection, the memory, the LCD, the relay, the self-healing relay and the keyboard input are all connected with the microprocessor; the relay output 220V is connected with the electromagnetic type alternating current contactor coil, and the self-healing relay output 220V is connected with the self-healing electromagnetic type alternating current contactor coil.
The temperature fault detection process comprises the following steps: analog signals of the temperature sensor acquired every 2 seconds are converted into digital signals through an AD conversion circuit and are pushed to a microprocessor, the digital signals are compared with a temperature threshold value stored by the microprocessor, if actual acquisition data are higher than the threshold value, a counting link is carried out for 15 times, the data are still over the threshold value after the counting is carried out for 15 times in a circulating way, the microprocessor sends a self-healing relay power-on command, the relay acts, a coil connected with a self-healing electromagnetic type self-healing alternating current contactor group is powered on, a self-healing mountain-shaped embedded coil iron core seat generates a magnetic field, a self-healing long arm iron core is attracted, the self-healing rotating shaft is connected to generate inward pulling force, three groups of moving contact systems of the self-healing electromagnetic control mechanism are pulled downwards, a moving contact system of the self-healing electromagnetic control mechanism and a static contact system of the self-healing electromagnetic control mechanism are closed, the self-healing electromagnetic control mechanism starts to supply power, and realizes double-path parallel power supply with the electromagnetic control mechanism, the self-healing of the high-temperature fault of the contact piece caused by poor contact or overlarge capacity of the static contact of the electromagnetic alternating current contactor is achieved, meanwhile, the microprocessor pushes information to the 5G communication module, and the alarm information of 'overhigh temperature' is sent to the remote server. After the self-healing electromagnetic type alternating current contactor group is put into operation for 1 minute, the detected temperature at the point still exceeds a threshold value, the microprocessor immediately generates an emergency power-off alarm signal and pushes the emergency power-off alarm signal to the 5G communication module to be sent to the remote server, and meanwhile, the microprocessor emergently starts an instruction for separating the electromagnetic type alternating current contactor coil and the self-healing electromagnetic type alternating current contactor group coil. The microprocessor automatically or manually controls the power-on operation of the coil of the electromagnetic alternating current contactor, and the power-on operation can be set through keyboard input, so that the damage of electrical appliances requiring high loads is avoided.
It should be understood that the examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the teachings of the present invention, and such equivalents also fall within the scope of the appended claims.
Claims (7)
1. The utility model provides an electromagnetic type ac contactor trouble self-healing device, a serial communication port, including solenoid electric mechanism, contact system and self-healing solenoid electric mechanism, solenoid electric mechanism and self-healing solenoid electric mechanism all with contact headtotail, the contact system still includes contact group, self-healing contact group, fault detection module and connection piece, contact group passes through with self-healing contact group connection piece fixed connection, fault detection module locates the contact is organized, self-healing solenoid electric mechanism includes control module, control module controls when fault detection module detects the contact system trouble self-healing solenoid electric mechanism action or send out the police dispatch newspaper.
2. The electromagnetic type ac contactor fault self-healing device according to claim 1, wherein the contact group includes a moving contact and a static contact, the fault detection module is disposed between the moving contact and the static contact, the self-healing contact group includes a self-healing moving contact and a self-healing static contact, and the static contact and the self-healing static contact pass through the connection piece is connected.
3. The electromagnetic type ac contactor fault self-healing device according to claim 2, wherein the fault detection module includes a base, a temperature sensor, a pressure column, a temperature sensor lead, a contact lead, a normally closed contact and a line bank, the base is connected to the static contact fixed connection, the line bank is connected to the base with the normally closed contact, the line bank is connected to the normally closed contact through the contact lead, the pressure column is connected to the line bank through the temperature sensor lead, and the temperature sensor is connected to the pressure column fixed connection.
4. The device according to claim 3, wherein the temperature sensor is a thin sheet temperature sensor, and a surface of the thin sheet temperature sensor is provided with a mounting fixture and a wiring groove.
5. The electromagnetic ac contactor failure self-healing device according to claim 3 or 4, wherein a lead groove and positive and negative leads are disposed on the side of the pressure column.
6. An electromagnetic type ac contactor trouble self-healing device according to claim 1 or 2, characterized in that, control module includes microprocessor, temperature signal access and self-healing relay, the temperature signal access receives the temperature signal of fault detection module input, microprocessor will temperature signal and settlement threshold value comparison, when temperature value surpassed settlement threshold value in succession 15 times, microprocessor control self-healing control mechanism circular telegram realizes the parallelly connected power supply of double-circuit with electromagnetic control mechanism system, sends "the high temperature" alarm simultaneously.
7. The electromagnetic type ac contactor fault self-healing device according to claim 6, wherein the control module further comprises a 5G communication module, after the self-healing control mechanism is powered on, when the temperature value exceeds the set threshold value for 30 consecutive times, the microprocessor pushes information to the 5G communication module, and sends an "emergency power off" alarm to the remote server, and the microprocessor controls to disconnect the power supply of the electromagnetic control mechanism and the self-healing electromagnetic control mechanism.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121914716.4U CN215527592U (en) | 2021-08-16 | 2021-08-16 | Electromagnetic type ac contactor fault self-healing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121914716.4U CN215527592U (en) | 2021-08-16 | 2021-08-16 | Electromagnetic type ac contactor fault self-healing device |
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| Publication Number | Publication Date |
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| CN215527592U true CN215527592U (en) | 2022-01-14 |
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| CN202121914716.4U Active CN215527592U (en) | 2021-08-16 | 2021-08-16 | Electromagnetic type ac contactor fault self-healing device |
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| CN (1) | CN215527592U (en) |
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- 2021-08-16 CN CN202121914716.4U patent/CN215527592U/en active Active
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