CN212463095U - Low-voltage soft start circuit, low-voltage soft start cabinet and low-voltage soft start system - Google Patents
Low-voltage soft start circuit, low-voltage soft start cabinet and low-voltage soft start system Download PDFInfo
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- CN212463095U CN212463095U CN202021229788.0U CN202021229788U CN212463095U CN 212463095 U CN212463095 U CN 212463095U CN 202021229788 U CN202021229788 U CN 202021229788U CN 212463095 U CN212463095 U CN 212463095U
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Abstract
The application provides a low pressure soft circuit, low pressure soft cabinet and low pressure soft system of opening of starting of opening. This low pressure soft start circuit includes: the soft starter comprises a soft starter, a bypass contact group, a first motor and a second motor, wherein the input end of the soft starter is connected with a power supply, the output end of the soft starter is respectively connected with the first motor and the second motor, the input end of the bypass contact group is connected with the power supply, the first output end of the bypass contact group is connected with the first motor, and the second output end of the bypass contact group is connected with the second motor. The low-voltage soft start circuit, the low-voltage soft start cabinet and the low-voltage soft start system provided by the embodiment of the application reduce the number of the low-voltage cabinets, and reduce the equipment investment cost and the floor area of a power distribution room.
Description
Technical Field
The application relates to the technical field of low-voltage equipment of a desulfurization dust removal device, in particular to a low-voltage soft start circuit, a low-voltage soft start cabinet and a low-voltage soft start system, which are used for reducing the number of the low-voltage cabinets and reducing the equipment investment cost and the floor area of a power distribution room.
Background
At present, low-voltage motors of a desulfurization dust removal device are generally configured by one use and one spare, and each motor is configured with a set of soft starter, such as a high-pressure water pump motor, an ash bucket fluidization fan motor, a cloth bag dust removal fan motor and the like, so that the equipment investment cost is high and the floor area of a power distribution room is large; in addition, signals from the soft start cabinet to the DCS (Distributed Control System) are all connected in a hard-wired manner through cables, the wiring manner and debugging work are complex, and meanwhile, the cable cost of the hard-wired manner is high, so that the equipment investment cost is further increased.
SUMMERY OF THE UTILITY MODEL
The application provides a soft circuit, the soft cabinet and the soft system of opening of low pressure, its aim at of opening of low pressure: how to reduce low-voltage cabinet quantity, reduce equipment input cost and electricity distribution room area.
In order to achieve the above object, the present application provides the following technical solutions:
a low voltage soft start circuit comprising: soft starter, bypass contactor group, first motor and second motor, wherein:
the input end of the soft starter is connected with a power supply, the output end of the soft starter is respectively connected with the first motor and the second motor, the input end of the bypass contact group is connected with the power supply, the first output end of the bypass contact group is connected with the first motor, and the second output end of the bypass contact group is connected with the second motor;
after the first motor is started through the soft starter and the bypass contact group, the bypass contact group is closed, and when the first motor in operation breaks down, the second motor is started through the soft starter and the bypass contact group.
Further, still include: a first motor protector and a second motor protector, wherein:
the first end of the first motor protector is connected with the bypass contact set, and the first end of the second motor protector is connected with the bypass contact set;
the second end of the first motor protector is connected with the first motor, and the second end of the second motor protector is connected with the second motor;
the first motor protector is used for detecting the current and the voltage of the first motor and realizing the protection of the first motor by controlling the bypass contact group;
the second motor protector is used for detecting the current and the voltage of the second motor and realizing the protection of the second motor by controlling the bypass contact group.
Further, the bypass contactor group includes: an ac contactor group and a molded case circuit breaker group.
Further, the first motor is a high-pressure water pump motor, an ash bucket fluidization fan motor or a cloth bag ash removal fan motor.
Further, the second motor is a high-pressure water pump motor, an ash bucket fluidization fan motor or a cloth bag ash removal fan motor.
A low voltage soft start cabinet comprising: the low-voltage soft start circuit and the IO module described above, wherein:
the control signal output by the low-voltage soft start circuit is connected with the IO module, and the IO module outputs four DO signals, six DI signals and two AI signals.
A low pressure soft start system comprising: the low-voltage soft start cabinet and the distributed control system, the low-voltage soft start cabinet comprises: the low-voltage soft start circuit and the IO module, the control signal that the low-voltage soft start circuit exported with the IO module links to each other, by the IO module outputs four ways DO signal, six ways DI signal and two ways AI signal, wherein:
and the low-voltage soft start cabinet is connected with the distributed control system through the IO module by a communication cable.
Adopt the soft start circuit of low pressure, the soft cabinet and the soft system of starting of low pressure that this application embodiment provided, can start two motors through a soft starter, only need a soft starter can realize the motor start of one with one and prepare for, reduce low-voltage cabinet quantity, reduce equipment input cost and electricity distribution room area. In addition, the control signal output by the low-voltage soft start cabinet is firstly accessed to the IO module in the cabinet and then is connected to the distributed control system DCS through the communication cable, so that the wiring cable and debugging cost are reduced, and the equipment investment cost is further reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a low-voltage soft start circuit according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a low-voltage soft start cabinet according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a low-voltage soft start system according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a low-voltage soft start circuit according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a low-voltage soft starter cabinet according to an embodiment of the present application;
fig. 6 is a schematic view of a connection mode between the low-voltage soft start cabinet and the DCS system according to the embodiment of the present application.
Detailed Description
The application provides a low pressure soft start circuit, low pressure soft start cabinet and low pressure soft start system can be in proper order soft start two motors through one set of soft starter, makes one use one motor that is equipped with only need one set of soft starter, reduces soft start cabinet quantity, area between reduction equipment cost and distribution. In addition, the low-voltage soft start circuit is led to an output signal of the DCS, the IO module is firstly accessed, then the communication cable is connected to the DCS, and the connection of a plurality of cables is changed into the connection of a single communication cable, so that the cable cost is reduced, and the wiring mode and the debugging work are also simple.
The application aims to: how to reduce the number of low-voltage cabinets and reduce the equipment investment cost and the floor area of a power distribution room; meanwhile, the wiring mode and debugging work are simplified, and the cable cost is reduced.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1, an embodiment of the present application provides a low-voltage soft start circuit, which includes: a soft starter 101, a bypass contact set 102, a first motor 103 and a second motor 104, wherein:
the input of soft starter 101 links to each other with power supply VCC, soft starter 101's output respectively with first motor 103 with second motor 104 is connected, bypass contactor group 102's input links to each other with power supply VCC, bypass contactor group 102's first output passes through first motor protector 105 with first motor 103 is connected, bypass contactor group 102's second output passes through second motor protector 106 with second motor 104 is connected.
After the first motor 103 is started by the soft starter 101 and the bypass contact set 102, the bypass contact set 102 is closed, and when the first motor 103 in operation fails, the second motor 104 is started by the soft starter 101 and the bypass contact set 102.
The first motor protector 105 is configured to detect a current and a voltage of the first motor 103, and to control the bypass contact set 102 to protect the first motor 103.
The second motor protector 106 is configured to detect the current and voltage of the second electric machine 104, and to control the bypass contact set 102 to protect the second electric machine 104.
It should be noted that the bypass contact set 102 may include: an ac contactor group and a molded case circuit breaker group.
It should be noted that the first motor 103 may be a high-pressure water pump motor, an ash bucket fluidization fan motor, or a cloth bag ash removal fan motor.
It should be noted that the second motor 104 may be a high-pressure water pump motor, an ash bucket fluidization fan motor, or a cloth bag ash removal fan motor.
The embodiment of the application provides a low pressure soft start circuit includes: soft starter, bypass contactor group, first motor and second motor adopt the low pressure soft start circuit that this application embodiment provided, can start two motors through a soft starter, only need a soft starter can realize one with one motor start of standing by for, reduce low-voltage cabinet quantity, reduce equipment input cost and electricity distribution room area.
The embodiment of the present application further provides a low-voltage soft-start cabinet, as shown in fig. 2, the low-voltage soft-start cabinet includes: the low-voltage soft start circuit 201 and the IO module 202 described above, wherein:
the control signal output by the low-voltage soft start circuit 201 is connected with the IO module 202, and the IO module 202 outputs four DO signals, six DI signals and two AI signals.
The embodiment of the application provides a soft cabinet that opens of low pressure includes: the low-voltage soft start circuit and the IO module described above, wherein: the control signal of low pressure soft start circuit output with the IO module links to each other, by IO module output four ways DO signal, six ways DI signal and two way AI signals, adopts the low pressure soft start cabinet that this application embodiment provided, can start two motors through a soft starter, only needs a soft starter can realize one with one motor start of backing up, and the control signal of low pressure soft start circuit output inserts the IO module in the cabinet earlier, reduces low-voltage cabinet quantity, reduces equipment input cost and electricity distribution room area.
An embodiment of the present application further provides a low-voltage soft start system, as shown in fig. 3, the low-voltage soft start system includes: the low-voltage soft start cabinet 301 and the distributed control system DCS302 described above, the low-voltage soft start cabinet 301 includes: the low-voltage soft start circuit 201 and the IO module 202, the control signal that the low-voltage soft start circuit 201 outputs with the IO module 202 links to each other, is exported four ways DO signal, six ways DI signal and two ways AI signal by the IO module 202, wherein:
the low-voltage soft start cabinet 301 is connected with the distributed control system 302 through the IO module 202 by a communication cable.
The embodiment of the application provides a low pressure soft system of starting includes: the above-mentioned low pressure soft cabinet and distributed control system DCS that opens, the low pressure soft cabinet that opens includes: the low-voltage soft start circuit and the IO module, the control signal that the low-voltage soft start circuit exported with the IO module links to each other, by the IO module outputs four ways DO signal, six ways DI signal and two ways AI signal, wherein: and the low-voltage soft start cabinet is connected with the distributed control system through the IO module by a communication cable. The control signal that adopts the soft cabinet output that opens of low pressure that this application embodiment provided inserts the IO module in the cabinet earlier, is being connected to distributed control system DCS through communication cable to reduce wiring cable and debugging cost, further reduce equipment input cost.
Referring to fig. 4, 5 and 6, a low-voltage soft start will be described by taking a starting process of starting two motors by one soft starter as an example:
first, motor M1 is started;
1) HL2 light, motor M1 in stop state; the motor soft starter and the first motor protector normally do not report faults, and the motor M1 can be started;
2) closing a fuse set-QSA and molded case circuit breakers-QF and-QF 1;
3) -QC1 in situ position, press-SB 1 button (or-QC 1 remote position, remote closing contact closed), contactor-KM 11 coil energized, -KM11 main contact closed and auxiliary contact closed, motor soft starter start;
4) after the motor M1 is started, a bypass control terminal of the motor soft starter is closed to enable a relay-K3 coil to be electrified, a contactor-KM 12 coil to be electrified, a main contact of-KM 12 is closed, an auxiliary contact of the contactor-KM 11 coil to be electrified, the main contact of the contactor-KM 11 is disconnected, and a first motor protector MDB protects the motor;
5) the HL1 light, motor M1 complete start, and when motor M1 in operation fails, motor M2 can be started sequentially.
When the motor soft starter starts the motor M1, the auxiliary contact of the contactor-KM 11 is connected in series to the closing loop of the motor M2, and the closing loops of the two motors are interlocked with each other, so that the motor M1 and the motor M2 cannot be started at the same time.
In the embodiment of the present application, the process of starting the motor M2 is the same as that of starting the motor M1, and for details, please refer to the process of starting the motor M1 for starting the motor M2, which is not described herein again in detail.
It should be noted that, in the embodiment of the present application, the control signal from the low-voltage soft start cabinet to the DCS includes:
1) DO signals 4: m1 remote switching-on, M1 remote switching-off, M2 remote switching-on and M2 remote switching-off;
2) DI signal 6: remote control, soft start full voltage operation, synthetic fault (M1) and remote control, soft start full voltage operation, synthetic fault (M2);
3) AI signals 2: m1 single-phase current is 4-20 mA, M2 single-phase current is 4-20 mA.
The signal is connected into the IO module, and the IO module is connected to the DCS through the communication cable.
According to the low-voltage soft start circuit, the low-voltage soft start cabinet and the low-voltage soft start system, after one motor is started through the soft starter, the bypass contactor is controlled to be closed, when the running motor fails, the soft starter starts the other standby motor, the two motors can be started through the soft starter, the motors which can be used and standby can be started only through the soft starter, the number of the low-voltage cabinets is reduced, and the equipment investment cost and the floor area of a power distribution room are reduced; in addition, in the embodiment of the application, the control signal which is led to the distributed control system DCS by the low-voltage soft start cabinet is connected to the IO module firstly and then is connected to the distributed control system DCS through the communication cable, so that the wiring cable and debugging cost are reduced, and the equipment investment cost is further reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (7)
1. A low voltage soft start circuit, comprising: soft starter, bypass contactor group, first motor and second motor, wherein:
the input end of the soft starter is connected with a power supply, the output end of the soft starter is respectively connected with the first motor and the second motor, the input end of the bypass contact group is connected with the power supply, the first output end of the bypass contact group is connected with the first motor, and the second output end of the bypass contact group is connected with the second motor;
after the first motor is started through the soft starter and the bypass contact group, the bypass contact group is closed, and when the first motor in operation breaks down, the second motor is started through the soft starter and the bypass contact group.
2. The low voltage soft start circuit of claim 1, further comprising: a first motor protector and a second motor protector, wherein:
the first end of the first motor protector is connected with the bypass contact set, and the first end of the second motor protector is connected with the bypass contact set;
the second end of the first motor protector is connected with the first motor, and the second end of the second motor protector is connected with the second motor;
the first motor protector is used for detecting the current and the voltage of the first motor and realizing the protection of the first motor by controlling the bypass contact group;
the second motor protector is used for detecting the current and the voltage of the second motor and realizing the protection of the second motor by controlling the bypass contact group.
3. The low voltage soft start circuit of claim 1, wherein the bypass contact set comprises: an ac contactor group and a molded case circuit breaker group.
4. The low-voltage soft start circuit according to claim 1, wherein the first motor is a high-pressure water pump motor, a hopper fluidization fan motor, or a cloth bag ash removal fan motor.
5. The low-voltage soft start circuit according to claim 1, wherein the second motor is a high-pressure water pump motor, a hopper fluidization fan motor, or a cloth bag ash removal fan motor.
6. A low-voltage soft-start cabinet is characterized by comprising: the low voltage soft start circuit and IO module of any one of claims 1 to 5, wherein:
the control signal output by the low-voltage soft start circuit is connected with the IO module, and the IO module outputs four DO signals, six DI signals and two AI signals.
7. A low pressure soft start system, comprising: the low voltage soft start cabinet and distributed control system of claim 6, said low voltage soft start cabinet comprising: the low-voltage soft start circuit and the IO module, the control signal that the low-voltage soft start circuit exported with the IO module links to each other, by the IO module outputs four ways DO signal, six ways DI signal and two ways AI signal, wherein:
and the low-voltage soft start cabinet is connected with the distributed control system through the IO module by a communication cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021229788.0U CN212463095U (en) | 2020-06-29 | 2020-06-29 | Low-voltage soft start circuit, low-voltage soft start cabinet and low-voltage soft start system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021229788.0U CN212463095U (en) | 2020-06-29 | 2020-06-29 | Low-voltage soft start circuit, low-voltage soft start cabinet and low-voltage soft start system |
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| Publication Number | Publication Date |
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| CN212463095U true CN212463095U (en) | 2021-02-02 |
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| CN202021229788.0U Active CN212463095U (en) | 2020-06-29 | 2020-06-29 | Low-voltage soft start circuit, low-voltage soft start cabinet and low-voltage soft start system |
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