CN210224945U - Motor contactor contact sintering protection device and one-way and two-way control system - Google Patents
Motor contactor contact sintering protection device and one-way and two-way control system Download PDFInfo
- Publication number
- CN210224945U CN210224945U CN201921557858.2U CN201921557858U CN210224945U CN 210224945 U CN210224945 U CN 210224945U CN 201921557858 U CN201921557858 U CN 201921557858U CN 210224945 U CN210224945 U CN 210224945U
- Authority
- CN
- China
- Prior art keywords
- wiring point
- intermediate relay
- contactor
- switch
- motor
- Prior art date
- 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
Links
- 238000005245 sintering Methods 0.000 title claims abstract description 21
- 238000000926 separation method Methods 0.000 claims description 15
- 230000005284 excitation Effects 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 6
- 230000001012 protector Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Landscapes
- Motor And Converter Starters (AREA)
Abstract
The utility model discloses a motor contactor contact sintering protection device, one-way and two-way control system, motor contactor contact sintering protection device, including connecting intermediate relay Z4 coil between K1 wiring point and the N wiring point, the normally open switch of intermediate relay Z1, the normally open switch of intermediate relay Z2 and the normally open switch of intermediate relay Z3 are established ties between L1 wiring point and N wiring point with the normally closed switch of intermediate relay Z4 and intermediate relay TK coil after connecting in parallel; an intermediate relay Z1 coil is connected between the U wiring point and the N wiring point in series; an intermediate relay Z2 coil is connected between the V wiring point and the N wiring point in series; an intermediate relay Z3 coil is connected between the W wiring point and the N wiring point in series; and a normally open switch of the intermediate relay TK is connected in series between the TK1 junction and the TK2 junction. The protection circuit can monitor the electrification conditions of the main contactor and the motor at the same time, and when the contactor loses power and the motor is electrified and is out of control, the main switch can be immediately switched off to prevent danger.
Description
Technical Field
The utility model relates to a motor protection technical field especially relates to motor contactor contact sintering protection device, one-way and two-way control system.
Background
When the motor is applied in a frequent start-stop loop, the contact of the main contactor is easily overheated, so that the sintering of the main contact cannot be reset, the motor is out of control, and various dangers are further caused. At present, no special protection device for the contact sintering of the motor contactor exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above problem, provide motor contactor contact sintering protection device, one-way and two-way control system, this protection device can keep watch on the electrified condition of main contactor and motor simultaneously, when the contactor loses the electricity and the electrified out of control condition of motor, can break off the main switch immediately, prevents that danger from taking place.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a contact sintering protection device of a motor contactor comprises a K1 wiring point, an L1 wiring point, a U wiring point, a V wiring point, a W wiring point, a TK1 wiring point, a TK2 wiring point and an N wiring point,
an intermediate relay Z4 coil is connected between the K1 wiring point and the N wiring point, and a normally open switch of the intermediate relay Z1, a normally open switch of the intermediate relay Z2 and a normally open switch of the intermediate relay Z3 are connected in parallel and then connected in series between the L1 wiring point and the N wiring point with a normally closed switch of the intermediate relay Z4 and an intermediate relay TK coil;
an intermediate relay Z1 coil is connected between the U wiring point and the N wiring point in series;
an intermediate relay Z2 coil is connected between the V wiring point and the N wiring point in series;
an intermediate relay Z3 coil is connected between the W wiring point and the N wiring point in series;
and a normally open switch of the intermediate relay TK is connected in series between the TK1 connection point and the TK2 connection point.
And the wiring point K2 is also included, an intermediate relay Z5 coil is connected between the wiring point K2 and the wiring point N, and a normally closed switch of the intermediate relay Z5 is also connected in series on a line between the wiring point L1 and the wiring point N.
The intermediate relay Z1, the intermediate relay Z2, the intermediate relay Z3, the intermediate relay Z4, the intermediate relay Z5 and the intermediate relay TK are all arranged in the shell, and the K1 wiring point, the L1 wiring point, the U wiring point, the V wiring point, the W wiring point, the TK1 wiring point, the TK2 wiring point and the N wiring point are arranged on the shell.
The back of the shell is provided with a track for installation.
The track is a 35mm standard track.
The intermediate relay Z1, the intermediate relay Z2, the intermediate relay Z3, the intermediate relay Z4, the intermediate relay Z5 and the intermediate relay TK are installed in the shell in a plugging mode.
Adopt motor contactor contact sintering protection device's one-way motor control system, include:
an isolation switch QS and a contactor KM1 are connected between lines L1, L2 and L3 and the motor in series, an N line is also connected with the isolation switch QS and then connected with an N wiring point, the isolation switch QS is a switch with a tripping excitation coil, and a tripping mechanism is linked with a normally open switch of the intermediate relay TK; TK1 and TK2 are normally open contacts of a TK relay, and active or passive control signals can be provided according to the connection mode of QS tripping exciting coils to trip QS main switches.
A stop button SB, a start button SB1 and a contactor KM1 coil are connected in series between a point led out by a line between an isolating switch QS and a contactor KM1 and an N wiring point, and the start button SB1 is connected in parallel with a normally open switch of a contactor KM 1;
the wiring point L1 and the wiring point K1 are both connected to a line on which the stop button SB is positioned;
and the U wiring point, the V wiring point and the W wiring point are respectively and correspondingly connected to a three-phase wiring terminal of the motor.
Adopt motor contactor contact sintering protection device's two-way motor control system, include:
the L1, the L2 and the L3 are all connected with one end of a separation switch QS, the other end of the separation switch QS is connected with a contactor KM1 and a contactor KM2 in parallel and then is connected with the motor, an N line is also connected with the separation switch QS and then is connected with an N wiring point, the separation switch QS is a switch with a tripping excitation coil, and a tripping mechanism is linked with a normally-open switch of the intermediate relay TK; TK1 and TK2 are normally open contacts of a TK relay, and active or passive control signals can be provided according to the connection mode of QS tripping exciting coils to trip QS main switches.
A stop button SB, a start button SB1, a normally closed switch of a contactor KM2 and a coil of a contactor KM1 are connected in series between a point led out by a line between a separation switch QS and a contactor KM1 and an N wiring point, and the start button SB1 is connected in parallel with a normally open switch of a contactor KM 1;
a branch is further connected between the stop button SB and the N wiring point, a start button SB2, a normally closed switch of the contactor KM1 and a coil of the contactor KM2 are connected in series, and two ends of the start button SB2 are connected with a normally open switch of the contactor KM2 in parallel;
the wiring point of the L1 is connected to a line on which the stop button SB is positioned; the K1 wiring point is connected to a branch where the starting button SB1 is located, and the K2 wiring point is connected to a branch where the starting button SB2 is located;
and the U wiring point, the V wiring point and the W wiring point are respectively and correspondingly connected to a three-phase wiring terminal of the motor.
The utility model has the advantages that:
1. the protection circuit can monitor the electrification conditions of the main contactor and the motor at the same time, and when the contactor loses power and the motor is electrified and is out of control, the main switch can be immediately switched off to prevent danger.
2. The protection device can be conveniently connected into a one-way motor loop or a two-way motor loop under the condition of not changing an original motor control loop, plays a role in protecting a contactor contact after sintering, and is convenient for the transformation and upgrading of the existing system.
Drawings
FIG. 1 is a schematic front view of a motor contactor contact sinter protection device;
FIG. 2 is a side schematic view of a motor contactor contact sinter protection device;
FIG. 3 is a schematic wiring diagram of a motor contactor contact sinter protection device;
FIG. 4 is a diagram of a control system for a single direction rotating motor;
fig. 5 is a control system diagram of the bidirectional rotary motor.
Wherein, 1 is the shell, 2 is the track.
The specific implementation mode is as follows:
the invention will be further explained with reference to the following embodiments and drawings:
as shown in FIGS. 1-3, the contact sintering protector of the motor contactor comprises a K1 terminal, an L1 terminal, a U terminal, a V terminal, a W terminal, a TK1 terminal, a TK2 terminal and an N terminal,
an intermediate relay Z4 coil is connected between the K1 wiring point and the N wiring point, and a normally open switch of the intermediate relay Z1, a normally open switch of the intermediate relay Z2 and a normally open switch of the intermediate relay Z3 are connected in parallel and then connected in series between the L1 wiring point and the N wiring point with a normally closed switch of the intermediate relay Z4 and an intermediate relay TK coil;
an intermediate relay Z1 coil is connected between the U wiring point and the N wiring point in series;
an intermediate relay Z2 coil is connected between the V wiring point and the N wiring point in series;
an intermediate relay Z3 coil is connected between the W wiring point and the N wiring point in series;
and a normally open switch of the intermediate relay TK is connected in series between the TK1 connection point and the TK2 connection point.
And the wiring point K2 is also included, an intermediate relay Z5 coil is connected between the wiring point K2 and the wiring point N, and a normally closed switch of the intermediate relay Z5 is also connected in series on a line between the wiring point L1 and the wiring point N.
As shown in fig. 1-2, the intermediate relay Z1, the intermediate relay Z2, the intermediate relay Z3, the intermediate relay Z4, the intermediate relay Z5 and the intermediate relay TK are all disposed in the housing 1, and the housing is provided with the K1 wiring point, the L1 wiring point, the U wiring point, the V wiring point, the W wiring point, the TK1 wiring point, the TK2 wiring point and the N wiring point.
As shown in fig. 2, the back of the housing is provided with rails 2 for mounting. The track is a 35mm standard track. The device is installed by using a 35mm standard track, and Z1, Z2, Z3, Z4, Z5 and TK are intermediate relays and are installed in the shell in a plugging mode, so that the replacement is convenient.
The protection circuit can monitor the electrification conditions of the main contactor and the motor at the same time, and when the contactor loses power and the motor is electrified and out of control, the main switch can be immediately disconnected, so that danger is prevented.
The protection device needs to be matched with a main switch with a tripping magnet exciting coil.
The device can be conveniently connected into a one-way motor loop or a two-way motor loop under the condition of not changing an original control loop.
The intermediate relay adopts a structure with an experiment button, and the protection device can be periodically tested.
As shown in fig. 4, the unidirectional motor control system using the contact sintering protection device of the motor contactor comprises:
an isolating switch QS and a contactor KM1 are connected in series between lines L1, L2 and L3 and the motor, an N line is also connected with the isolating switch QS and then connected with the N wiring point, the isolating switch QS is a switch with a tripping excitation coil, a tripping mechanism is linked with a normally open switch of the TK, TK1 and TK2 are normally open contacts of the TK relay, and active or passive control signals can be provided according to the wiring mode of the QS tripping excitation coil and used for tripping the QS main switch;
a stop button SB, a start button SB1 and a contactor KM1 coil are connected in series between a point led out by a line between an isolating switch QS and a contactor KM1 and an N wiring point, and the start button SB1 is connected in parallel with a normally open switch of a contactor KM 1;
the wiring point L1 and the wiring point K1 are both connected to a line on which the stop button SB is positioned;
and the U wiring point, the V wiring point and the W wiring point are respectively and correspondingly connected to a three-phase wiring terminal of the motor.
In a frequent start-stop loop, the contact of the main contactor is overheated and sintered and cannot be reset easily, and the motor is out of control. The contact sintering protection device of the motor contactor can monitor the electrification condition of the main contactor KM1 and the electrification condition of the motor at the same time, and can immediately disconnect the main switch when the motor is out of control, so that danger is prevented.
QS is a switch with a trip field coil. And a contact sintering protection device of the motor contactor is arranged in a dotted line frame.
When the starting switch SB1 is pressed down, the KM1 contactor is electrified to normally act, the intermediate relay Z4 coil is electrified, the normally closed auxiliary contact is disconnected, the intermediate relay TK coil is not electrified, and the normally open switch of the tripping relay (intermediate relay TK) is in an open state and does not act.
The stopping button SB is pressed down, when the contact of the KM1 contactor is sintered and can not be disconnected, the normally closed contact is closed after the coil of the intermediate relay Z4 is de-energized, meanwhile, any one of the intermediate relays Z1, Z2 and Z3 is electrified, the normally open switch of any one of the intermediate relays Z1, Z2 and Z3 is closed, the TK coil is electrified, the TK normally open switch contact is closed, the QS tripping excitation coil acts, the QS tripping mechanism acts, the QS disconnects the whole circuit power supply, and the protection effect is achieved.
As shown in fig. 5, the bidirectional motor control system using the contact sintering protection device of the motor contactor comprises:
the lines L1, L2 and L3 are all connected with one end of a separation switch QS, the other end of the separation switch QS is connected with a contactor KM1 and a contactor KM2 in parallel and then is connected with the motor, the line N is also connected with the separation switch QS and then is connected with the N wiring point, the separation switch QS is a switch with a tripping excitation coil, a tripping mechanism is linked with a normally open switch of the intermediate relay TK, a stopping button SB, a starting button SB1, a normally closed switch of a contactor KM2 and a coil of a contactor KM1 are connected between one point of a line led out between the separation switch QS and the contactor KM1 and the N wiring point in series, and the starting button SB1 is connected with the normally open switch of the;
a branch is further connected between the stop button SB and the N wiring point, a start button SB2, a normally closed switch of the contactor KM1 and a coil of the contactor KM2 are connected in series, and two ends of the start button SB2 are connected with a normally open switch of the contactor KM2 in parallel;
the wiring point of the L1 is connected to a line on which the stop button SB is positioned; the K1 wiring point is connected to a branch where the starting button SB1 is located, and the K2 wiring point is connected to a branch where the starting button SB2 is located;
and the U wiring point, the V wiring point and the W wiring point are respectively and correspondingly connected to a three-phase wiring terminal of the motor.
When the starting switch SB1 is pressed down, the KM1 contactor is electrified to normally act, the intermediate relay Z4 coil is electrified, the normally closed auxiliary contact is disconnected, the intermediate relay TK coil is not electrified, and the normally open switch of the tripping relay (intermediate relay TK) is in an open state and does not act.
When the starting switch SB2 is pressed down, the KM2 contactor is electrified to normally act, the intermediate relay Z5 coil is electrified, the normally closed auxiliary contact is disconnected, the intermediate relay TK coil is not electrified, and the normally open switch of the tripping relay (intermediate relay TK) is in an open state and does not act.
The stopping button SB is pressed down, when the contact of the KM1 contactor is sintered and can not be disconnected, the normally closed contact is closed after the coil of the intermediate relay Z4 is de-energized, meanwhile, any one of the intermediate relays Z1, Z2 and Z3 is electrified, the normally open switch of any one of the intermediate relays Z1, Z2 and Z3 is closed, the TK coil is electrified, the TK normally open switch contact is closed, the QS tripping excitation coil acts, the QS tripping mechanism acts, the QS disconnects the whole circuit power supply, and the protection effect is achieved.
The stopping button SB is pressed down, when the contact of the KM2 contactor is sintered and can not be disconnected, the normally closed contact is closed after the coil of the intermediate relay Z5 is de-energized, meanwhile, any one of the intermediate relays Z1, Z2 and Z3 is electrified, the normally open switch of any one of the intermediate relays Z1, Z2 and Z3 is closed, the TK coil is electrified, the TK normally open switch contact is closed, the QS tripping excitation coil acts, the QS tripping mechanism acts, the QS disconnects the whole circuit power supply, and the protection effect is achieved.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (8)
1. A contact sintering protection device of a motor contactor is characterized by comprising a K1 wiring point, an L1 wiring point, a U wiring point, a V wiring point, a W wiring point, a TK1 wiring point, a TK2 wiring point and an N wiring point,
an intermediate relay Z4 coil is connected between the K1 wiring point and the N wiring point, and a normally open switch of the intermediate relay Z1, a normally open switch of the intermediate relay Z2 and a normally open switch of the intermediate relay Z3 are connected in parallel and then connected in series between the L1 wiring point and the N wiring point with a normally closed switch of the intermediate relay Z4 and an intermediate relay TK coil;
an intermediate relay Z1 coil is connected between the U wiring point and the N wiring point in series;
an intermediate relay Z2 coil is connected between the V wiring point and the N wiring point in series;
an intermediate relay Z3 coil is connected between the W wiring point and the N wiring point in series;
and a normally open switch of the intermediate relay TK is connected in series between the TK1 connection point and the TK2 connection point.
2. The motor contactor contact seizure protection device of claim 1 further comprising a K2 terminal, wherein an intermediate relay Z5 coil is connected between said K2 terminal and said N terminal, and wherein the normally closed switch of intermediate relay Z5 is also connected in series in the line between said L1 terminal and said N terminal.
3. The motor contactor contact seizure protection device of claim 2 wherein said relay Z1, relay Z2, relay Z3, relay Z4, relay Z5 and relay TK are disposed within a housing, said housing having said K1, L1, U, V, W, TK1, TK2 and N terminals.
4. A motor contactor contact seizure protection device as claimed in claim 3 wherein the back of said housing is provided with rails for mounting.
5. The motor contactor contact seizure protection device of claim 4 wherein said rail is a 35mm standard rail.
6. The contact sintering protector of motor contactor as claimed in claim 3, wherein the intermediate relay Z1, the intermediate relay Z2, the intermediate relay Z3, the intermediate relay Z4, the intermediate relay Z5 and the intermediate relay TK are installed in the housing by plugging.
7. A unidirectional motor control system employing the motor contactor contact sintering protection device of claim 1, comprising:
an isolation switch QS and a contactor KM1 are connected between lines L1, L2 and L3 and the motor in series, an N line is also connected with the isolation switch QS and then connected with an N wiring point, the isolation switch QS is a switch with a tripping excitation coil, and a tripping mechanism is linked with a normally open switch of the intermediate relay TK;
a stop button SB, a start button SB1 and a contactor KM1 coil are connected in series between a point led out by a line between an isolating switch QS and a contactor KM1 and an N wiring point, and the start button SB1 is connected in parallel with a normally open switch of a contactor KM 1;
the wiring point L1 and the wiring point K1 are both connected to a line on which the stop button SB is positioned;
and the U wiring point, the V wiring point and the W wiring point are respectively and correspondingly connected to a three-phase wiring terminal of the motor.
8. A bi-directional motor control system employing the motor contactor contact sintering protection device of claim 2, comprising:
the L1, the L2 and the L3 are all connected with one end of a separation switch QS, the other end of the separation switch QS is connected with a contactor KM1 and a contactor KM2 in parallel and then is connected with the motor, an N line is also connected with the separation switch QS and then is connected with an N wiring point, the separation switch QS is a switch with a tripping excitation coil, and a tripping mechanism is linked with a normally-open switch of the intermediate relay TK;
a stop button SB, a start button SB1, a normally closed switch of a contactor KM2 and a coil of a contactor KM1 are connected in series between a point led out by a line between a separation switch QS and a contactor KM1 and an N wiring point, and the start button SB1 is connected in parallel with a normally open switch of a contactor KM 1;
a branch is further connected between the stop button SB and the N wiring point, a start button SB2, a normally closed switch of the contactor KM1 and a coil of the contactor KM2 are connected in series, and two ends of the start button SB2 are connected with a normally open switch of the contactor KM2 in parallel;
the wiring point of the L1 is connected to a line on which the stop button SB is positioned; the K1 wiring point is connected to a branch where the starting button SB1 is located, and the K2 wiring point is connected to a branch where the starting button SB2 is located;
and the U wiring point, the V wiring point and the W wiring point are respectively and correspondingly connected to a three-phase wiring terminal of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921557858.2U CN210224945U (en) | 2019-09-17 | 2019-09-17 | Motor contactor contact sintering protection device and one-way and two-way control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921557858.2U CN210224945U (en) | 2019-09-17 | 2019-09-17 | Motor contactor contact sintering protection device and one-way and two-way control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210224945U true CN210224945U (en) | 2020-03-31 |
Family
ID=69921237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921557858.2U Expired - Fee Related CN210224945U (en) | 2019-09-17 | 2019-09-17 | Motor contactor contact sintering protection device and one-way and two-way control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210224945U (en) |
-
2019
- 2019-09-17 CN CN201921557858.2U patent/CN210224945U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210224945U (en) | Motor contactor contact sintering protection device and one-way and two-way control system | |
| CN105158688B (en) | Electromechanical equipment fault location and alarm protecting apparatus | |
| CN203192723U (en) | Under-voltage trip gear for breaker | |
| CN106299947B (en) | A kind of current collector for trolley conductor and its protection control method with protective device | |
| CN104112998B (en) | The method of operation of middle-placed switch cabinet multifunctional electricity-detection, grounding trolley | |
| CN210604804U (en) | Three-phase alternating current automatic adjustment detection circuit | |
| CN210350787U (en) | Automatic adjustment protection circuit for arbitrary connection of three-phase alternating current | |
| CN203039358U (en) | An AC brake opening and closing self-holding circuit | |
| CN204334233U (en) | A kind of motor with star delta reduced-voltage starting function | |
| CN102436982B (en) | Breaker for prepaid watt-hour meter | |
| CN219697287U (en) | Anti-interference circuit realized by using time relay | |
| CN219696336U (en) | Electromagnetic anti-interference electric contactor | |
| CN203553880U (en) | Integrated accident signal resetting circuit in microcomputer type relay protection circuit | |
| CN210120395U (en) | Circuit breaker electricity keeps control module | |
| CN201430421Y (en) | Three-phase asynchronous motor open-phase protector | |
| CN208142087U (en) | Spring operating mechanism of circuit breaker energy storage delay-time protector | |
| CN208368434U (en) | A kind of stabilization motor type relay | |
| CN209767329U (en) | Protector flash chamber and motor protector | |
| CN2336509Y (en) | Automatic switching electric supply device for underground fan | |
| CN204012226U (en) | The control circuit of middle-placed switch cabinet multifunctional electricity-detection, grounding trolley | |
| CN201374543Y (en) | Closing protective relay | |
| CN106885331A (en) | External electric cabinet suitable for module unit | |
| CN2137045Y (en) | Automatic protecting magnetic starter for phase-defect | |
| CN2405362Y (en) | Phase interruption protection arrangement for three-phase power supply | |
| CN2151566Y (en) | Open-phase protector for three-phase ac motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200422 Address after: 277100 No.26 Changjiang Road, Zaozhuang Economic Development Zone, Zaozhuang City, Shandong Province Patentee after: Zaozhuang Nanjiao Thermal Power Co., Ltd Address before: 277100 Zaozhuang Southern Suburb Thermal Power Co., Ltd. No. 26 Changjiang Road, Central District, Zaozhuang City, Shandong Province Patentee before: Shi Hongwu |
|
| 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: 20200331 Termination date: 20200917 |