CN109656280A - A kind of hot roughing synchronous motor cooling system - Google Patents
A kind of hot roughing synchronous motor cooling system Download PDFInfo
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- CN109656280A CN109656280A CN201811613510.0A CN201811613510A CN109656280A CN 109656280 A CN109656280 A CN 109656280A CN 201811613510 A CN201811613510 A CN 201811613510A CN 109656280 A CN109656280 A CN 109656280A
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- temperature
- synchronous motor
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- Automation & Control Theory (AREA)
Abstract
The invention discloses a kind of hot roughing synchronous motor cooling systems, including PLC, synchronous motor, the blower being connected with synchronous motor, the cooling water tank for being connected and include inlet and outlet pipes with synchronous motor, further includes: adjuster, the frequency converter being connected with the motor of blower, the electric control valve being connected with cooling water tank；The first temperature sensor on the winding of synchronous motor is set；The second temperature sensor and third temperature sensor being separately positioned on water inlet line and on outlet conduit, adjuster is for being adjusted frequency converter according to the temperature of winding, to adjust the revolving speed of motor, and the opening degree for adjusting electric control valve according to the difference between the water temperature at outlet conduit and the water temperature at water inlet line.Above-mentioned technical proposal disclosed in the present application can reduce the waste of energy resources when cooling down to synchronous motor, and reduce the abrasion to fan motor machine bearing, to extend the service life of bearing, reduce maintenance cost.
Description
Technical field
The present invention relates to synchronous motor cooling technology fields, cooling more specifically to a kind of hot roughing synchronous motor
System.
Background technique
Calendering factory usually cools down hot roughing host synchronization motor using cooling blower and cooling circulating water,
In, host 7000KW synchronous motor is usually corresponding with the cooling blower motor of 6 37KW.
Currently, cooling blower motor is using contactor-relay controlling party when cooling down to synchronous motor
Formula is controlled, and cooling blower is chronically at the operating status of maximum speed, maximum quantity of wind, cannot be according to synchronous motor winding
Temperature is adjusted, to cause the waste of electric energy.In addition, cooling blower run under power frequency, total pressure also for a long time will increase it is cold
But the abrasion of fan motor machine bearing reduces so as to cause the service life of bearing, and maintenance cost is caused to increase.And synchronize electricity
Machine cooling circulating water system generallys use manual brake valve as recirculated water penstock, does not consider the operating status of synchronous motor
And usually open to the maximum valve, therefore, it will cause the waste of water resource.
In conclusion how to reduce the waste of energy resources when cooling down to synchronous motor, and reduce to blower electricity
The abrasion of motivation bearing reduces maintenance cost, is that current those skilled in the art are urgently to be resolved to extend the service life of bearing
The technical issues of.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of hot roughing synchronous motor cooling systems, to synchronous motor
The waste of energy resources is reduced when being cooled down, and reduces the abrasion to fan motor machine bearing, to extend the use of bearing
Service life reduces maintenance cost.
To achieve the goals above, the invention provides the following technical scheme:
A kind of hot roughing synchronous motor cooling system, including PLC, synchronous motor, the blower being connected with the synchronous motor,
It is connected and includes the cooling water tank of inlet and outlet pipes with the synchronous motor, further includes: be arranged in the PLC
The adjuster in portion, the frequency converter being connected with the motor of the blower, the electric control valve being connected with the cooling water tank；
Be arranged on the winding of the synchronous motor, be connected with the PLC, temperature for detecting the winding first
Temperature sensor；
Be separately positioned on the water inlet line and be connected on the outlet conduit, with the PLC, for acquire it is described into
The second temperature sensor of water temperature at waterpipe, and the third temperature sensing for acquiring the water temperature at the outlet conduit
Device；
Wherein, the adjuster is for being adjusted the frequency converter according to the temperature of the winding, described in utilizing
Frequency converter adjusts the revolving speed of the motor, and for according to the water temperature at the outlet conduit and the water at the water inlet line
Difference between temperature adjusts the opening degree of the electric control valve, to utilize cooling water tank described in the motorized adjustment valve regulation
Water yield.
Preferably, the PLC is Siemens S7-400 PLC, and the adjuster is PID regulator, further includes: is passed through
Frequency-variable controller that ProfiBus_DP fieldbus is connected with the Siemens S7-400 PLC passes through the ProfiBus_DP
The station ET200 by the machine that fieldbus is connected with the Siemens S7-400 PLC, in which:
The frequency-variable controller is used to receive the temperature of the winding that first temperature sensor detects, and by institute
The temperature for stating winding is sent to the Siemens S7-400 PLC；
The station ET200 is collected for receiving the second temperature sensor and the third temperature sensor by the machine
Water temperature, and the water temperature is sent to the Siemens S7-400 PLC.
Preferably, the adjuster is according between the water temperature at the outlet conduit and the water temperature at the water inlet line
Difference adjusts the opening degree of the electric control valve, to utilize the water yield of cooling water tank described in the motorized adjustment valve regulation,
Include:
The difference between the water temperature at water temperature and the water inlet line at the outlet conduit is greater than the first preset value
When, the opening degree of the electric control valve is adjusted in the PID regulator.
Preferably, the adjuster is for being adjusted the frequency converter according to the temperature of the winding, to utilize institute
State the revolving speed that frequency converter adjusts the motor, comprising:
The PID regulator controls the revolving speed of the motor according to the maximum temperature of the winding.
Preferably, the PID regulator adjusts the revolving speed of the motor according to the maximum temperature of the winding, comprising:
When the maximum temperature of the winding is greater than the second preset value, revolving speed of the PID regulator to the motor
It is controlled.
Preferably, the frequency converter is G120 frequency converter.
Preferably, further includes:
The incoming breaker that is connected with the G120 frequency converter is connected with the incoming breaker and the G120 frequency converter
Inlet wire contactor, the line contact device being connected with the G120 frequency converter, the hot relay that is connected with the line contact device protect
The bypass contactor for protecting device, being connected with the hot relay protector and the incoming breaker.
Preferably, further includes:
Reactor between the inlet wire contactor and the G120 frequency converter is set, setting becomes in the G120
Outlet reactor between frequency device and the line contact device.
Preferably, further includes:
The inlet wire filter being connected with the G120 frequency converter and the reactor.
Preferably, the PLC is also used to issue alarm signal when the frequency converter breaks down.
The present invention provides a kind of hot roughing synchronous motor cooling system, including PLC, synchronous motor, with synchronous motor phase
Blower even, the cooling water tank for being connected and include inlet and outlet pipes with synchronous motor, further includes: be arranged in PLC
The adjuster of inside, the frequency converter being connected with the motor of blower, the electric control valve being connected with cooling water tank；It is arranged in synchronization
Be connected on the winding of motor, with PLC, for detection winding temperature the first temperature sensor；It is separately positioned on water inlet line
It is connected on upper and outlet conduit, with PLC, the second temperature sensor for acquiring the water temperature at water inlet line, and for acquiring
The third temperature sensor of water temperature at outlet conduit, wherein adjuster is for adjusting frequency converter according to the temperature of winding
Section, to adjust the revolving speed of motor using frequency converter, and for according to the water temperature at outlet conduit and the water temperature at water inlet line
Between difference adjust electric control valve opening degree, with using motorized adjustment valve regulation cooling water tank water yield.
The motor with blower is arranged in above-mentioned technical proposal disclosed in the present application in hot roughing synchronous motor cooling system
Connected frequency converter, and the electric control valve being connected with cooling water tank is set, utilize first be arranged on synchronous motor winding
Temperature sensor acquires the temperature of winding, at the second temperature sensor acquisition water inlet line being arranged on water inlet line
Water temperature using the water temperature at the third temperature sensor acquisition outlet conduit being arranged on outlet conduit, and utilizes temperature sensing
Collected temperature is sent to PLC by device, and the adjuster inside PLC adjusts frequency converter according to the temperature of winding
Section realizes the revolving speed that motor is adjusted according to the temperature of winding, and make to be adjusted using revolving speed of the frequency converter to motor
The opening degree of electric control valve can be adjusted according to the difference of the water temperature out, at water inlet line by obtaining adjuster, to adjust cooling water tank
Water yield, to save electric energy and water resource.In addition, the revolving speed due to motor can be according to the temperature of synchronous motor winding
It is adjusted, rather than is to be run under power frequency, total pressure for a long time, therefore, then the abrasion of bearing of motor can be reduced, to extend
The service life of bearing of motor, and reduce maintenance cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of hot roughing synchronous motor cooling system provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram that the motor provided in an embodiment of the present invention to blower carries out frequency control；
Fig. 3 is the schematic diagram provided in an embodiment of the present invention controlled cooling water tank；
Fig. 4 is synchronous motor cooling water control circuit diagram provided in an embodiment of the present invention；
Fig. 5 is fan frequency conversion electric operation control circuit figure provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Figure 1 to Fig. 4, wherein it is cooling that Fig. 1 shows a kind of hot roughing synchronous motor provided in an embodiment of the present invention
The structural schematic diagram of system, Fig. 2 shows the principles that the motor provided in an embodiment of the present invention to blower carries out frequency control
Figure, Fig. 3 show the schematic diagram provided in an embodiment of the present invention controlled cooling water tank, and Fig. 4 shows implementation of the present invention
The synchronous motor cooling water control circuit diagram that example provides.
A kind of hot roughing synchronous motor cooling system provided in an embodiment of the present invention, may include PLC1, synchronous motor 2,
The blower 3 that is connected with synchronous motor 2, the cooling water tank 4 for being connected and include inlet and outlet pipes with synchronous motor 2,
Can also include: adjuster 110 inside PLC1 is set, the frequency converter 5 that is connected with the motor of blower 3, with cooling water tank 4
Connected electric control valve 6；
Be arranged on the winding of synchronous motor 2, be connected with PLC1, for detection winding temperature the first temperature sensor
7；
It is separately positioned on water inlet line and is connected on outlet conduit, with PLC1, for acquiring the water temperature at water inlet line
Second temperature sensor 8, and the third temperature sensor 9 for acquiring the water temperature at outlet conduit；
Wherein, adjuster 110 is for being adjusted frequency converter 5 according to the temperature of winding, to adjust electricity using frequency converter 5
The revolving speed of motivation, and for adjusting motorized adjustment according to the difference between the water temperature at outlet conduit and the water temperature at water inlet line
The opening degree of valve 6, to adjust the water yield of cooling water tank 4 using electric control valve 6.
Hot roughing synchronous motor cooling system may include that (Programmable Logic Controller, can compile PLC1
Journey logic controller), the adjuster 110 that is arranged in inside PLC1, synchronous motor 2, the blower 3 being connected with synchronous motor 2, with it is same
The frequency converter that step motor 2 is connected and includes the cooling water tank 4 of inlet and outlet pipes, is connected with the motor of blower 3
5, the electric control valve 6 that is connected with cooling water tank 4, the first temperature sensor 7 being arranged on the winding of synchronous motor 2, setting
Second temperature sensor 8 on water inlet line and the third temperature sensor 9 being arranged on outlet conduit.
The first temperature sensor 7 being mounted on the winding of synchronous motor 2 can detecte the temperature of 2 winding of synchronous motor
(the specially temperature of 2 three-phase windings of synchronous motor), and the temperature for the winding that will test is sent to PLC1, PLC1 can use
Temperature display of the temperature as synchronous motor 2, in order to check the operating condition of synchronous motor 2 at any time.Wherein, synchronous
The factors such as the temperature of 2 winding of motor and the payload of synchronous motor 2, environment temperature are related.
Referring to fig. 2, it is formed using adjuster 110, frequency converter 5, first temperature sensor 7 etc. using temperature as control object
Closed-loop control.When 7 temperature detected of the first temperature sensor are sent to PLC1, the adjuster inside PLC1 is set
The temperature of 110 available windings, using the temperature of winding as temperature actual feedback, according to the temperature of winding to frequency converter 5
Frequency be adjusted, and the motor speed of blower 3 is adjusted by the variation of 5 frequency of frequency converter, to realize basis
The winding temperature of synchronous motor 2 adjusts the revolving speed of motor, so that the control for improving motor speed is accurate.
According to hydromechanics principle, shaft power is directly proportional to the cube of revolving speed, when institute's required airflow is reduced, 3 revolving speed of blower
When reduction, power can be by the third-order drop of revolving speed, therefore, and carrying out accurate control to motor speed can save largely
Electric energy, so as to reduce the waste of electric energy, so can reduce calendering factory operating cost.In addition, right using frequency converter 5
After motor speed is controlled, the starting of blower 3 is more steady, therefore, then can reduce to caused by motor and blower 3
Impact, and motor need not be run under power frequency, total pressure for a long time, so as to extend the use longevity of bearing of motor
Life, reduces the maintenance cost of bearing of motor.
Referring to Fig. 3 and Fig. 4, adjuster 110, electric control valve 6, second temperature sensor 8 and third temperature sensing are utilized
Devices 9 etc. are formed using temperature as the closed-loop control of control object.Wherein, the valve of electric control valve 6 is given and valve feedback signal
For the signal of 4-20mA；It include breaker 7QF5 inside synchronous motor cooling water control circuit, to be switched off and on load circuit,
And disengagement failure circuit, fault spread is prevented, guarantees safe operation.
The second temperature sensor 8 being mounted on the water inlet line of synchronous motor cooling circulating water can acquire water inlet line
The water temperature (temperature of the water i.e. at water inlet line) at place, the third temperature being mounted on the outlet conduit of synchronous motor cooling circulating water
Degree sensor 9 can acquire the water temperature at outlet conduit, and second temperature sensor 8 and third temperature sensor 9 can incite somebody to action
The water temperature detected is sent to PLC1, and the difference of the water temperature at outlet conduit and the water temperature at water inlet line is obtained using PLC1.Benefit
Use the difference of the water temperature at outlet conduit and the water temperature at water inlet line as the temperature actual feedback of adjuster 110, according to water temperature
Difference big minor adjustment electric control valve 6 opening degree, with using electric control valve 6 adjust cooling water tank 4 water yield, thus
Water resource is saved, to avoid the waste of water resource, and then the operating cost of calendering factory can be reduced.
Wherein, it is electronic to be specifically as follows HW series with electric control valve 6 set in hot roughing synchronous motor cooling system
Actuator is a kind of driving device for being capable of providing rotary motion, it works using power supply and under the influence of control signals.
The features such as HW series Electric Actuator specific performance is reliable, high-strength abrasion-proof, return difference minimum, easy to use.
It should be noted that above-mentioned the first mentioned temperature sensor 7, second temperature sensor 8, third temperature sensing
Device 9 all can be PT100 temperature sensor, to improve the accuracy of temperature signal collection.It is of course also possible to by other kinds of
Temperature sensor is applied in hot roughing synchronous motor cooling system, to acquire corresponding temperature value.
In addition, the real-time running state of synchronous motor 2 can be effectively monitored, by above equipment so as to synchronization
Motor 2 effectively protects.
The motor with blower is arranged in above-mentioned technical proposal disclosed in the present application in hot roughing synchronous motor cooling system
Connected frequency converter, and the electric control valve being connected with cooling water tank is set, utilize first be arranged on synchronous motor winding
Temperature sensor acquires the temperature of winding, at the second temperature sensor acquisition water inlet line being arranged on water inlet line
Water temperature using the water temperature at the third temperature sensor acquisition outlet conduit being arranged on outlet conduit, and utilizes temperature sensing
Collected temperature is sent to PLC by device, and the adjuster inside PLC adjusts frequency converter according to the temperature of winding
Section realizes the revolving speed that motor is adjusted according to the temperature of winding, and make to be adjusted using revolving speed of the frequency converter to motor
The opening degree of electric control valve can be adjusted according to the difference of the water temperature out, at water inlet line by obtaining adjuster, to adjust cooling water tank
Water yield, to save electric energy and water resource.In addition, the revolving speed due to motor can be according to the temperature of synchronous motor winding
It is adjusted, rather than is to be run under power frequency, total pressure for a long time, therefore, then the abrasion of bearing of motor can be reduced, to extend
The service life of bearing of motor, and reduce maintenance cost.
A kind of hot roughing synchronous motor cooling system provided in an embodiment of the present invention, PLC1 can be Siemens S7-
400PLC, adjuster 110 can be PID regulator, can also include: by ProfiBus_DP fieldbus and Siemens S7-
By 400PLC connected frequency-variable controller 10, the machine being connected with Siemens S7-400 PLC by ProfiBus_DP fieldbus
The station ET200 13, in which:
Frequency-variable controller 10 is used to receive the temperature of the winding that the first temperature sensor 7 detects, and by the temperature of winding
It is sent to Siemens S7-400 PLC；
The station ET200 13 is used to receive second temperature sensor 8 and the collected water temperature of third temperature sensor 9 by machine, and
Water temperature is sent to Siemens S7-400 PLC.
PLC1 in hot roughing synchronous motor cooling system is specifically as follows Siemens S7-400 PLC, to the west of control layer
ProfiBus_DP fieldbus centered on the sub- S7-400PLC of door is constituted, and further includes frequency conversion other than comprising above equipment
Controller 10 (Siemens SIMADYN_D), 6RA70 DC speed regulator 11, the station ET200 12, the machine side station ET200 13.
Siemens S7-400 PLC is main equipment, has the permission of bus access, can read or rewrite and is straight from equipment 6RA70
The state for flowing 12 remote I/Os of governor 11, frequency-variable controller 10 (Siemens SIMADYN_D) and the station ET200, to reach control
With the purpose of supervision equipment operating status.ProfiBus is a kind of open standard for Fieldbus.Wherein, DP is for automation
System and distributed peripheral equipment or field device and design, transmission medium uses Shielded Twisted Pair, and system uses bus
The topological structure of formula, each equipment are connected into bus, message transmission rate 1.5Mb/s using bus connector.
By the station ET200 13 by frequency converter 5 and machine (detected by acquisition second temperature sensor 8 and third temperature sensor 9
Water temperature, and acquire that the signals such as valve feedback, output frequency conversion/power frequency mode switches and the signals such as valve is given), be articulated in the west of
On ProfiBus_DP fieldbus centered on the sub- S7-400PLC of door.
Be arranged in the adjuster 110 inside Siemens S7-400 PLC be specifically as follows PID (P- ratio, I- integral, D- it is micro-
Point) adjuster, precision can be improved, accelerate dynamic responding speed.Wherein, the PID inside Siemens S7-400 PLC is set
Adjust PID regulator and recirculated water automatic control PID regulator that implement body can be divided into frequency converter timing system.
First temperature sensor 7 can be sent to the temperature of the winding detected after collecting the temperature of winding
On the frequency-variable controller 10 (Siemens SIMADYN_D) of synchronous motor 2, through ProfiBus_DP fieldbus the temperature of winding
It sends Siemens S7-400 PLC to, and takes the temperature of winding actually anti-as the temperature of the PID regulator of frequency converter timing system
Feedback, to realize the revolving speed for controlling motor according to the temperature of winding.
Second temperature sensor 8 and third temperature sensor 9 can be stood after collecting water temperature by ET200 by machine
13 water temperatures sample Siemens S7-400 PLC, and automatically control the difference of the water temperature out, at water inlet line as recirculated water
The temperature actual feedback of PID regulator, according to the opening degree of the big minor adjustment electric control valve 6 of the difference of water temperature.
A kind of hot roughing synchronous motor cooling system provided in an embodiment of the present invention, adjuster 110 according to outlet conduit at
Water temperature and water inlet line at water temperature between difference adjust electric control valve 6 opening degree, with using electric control valve 6 adjust
Save cooling water tank 4 water yield, may include:
When the difference between the water temperature at water temperature and water inlet line at outlet conduit is greater than the first preset value, PID tune
The opening degree of electric control valve 6 is adjusted in section device.
When automatically controlling the opening degree of PID regulator adjusting electric control valve 6 using recirculated water, at outlet conduit
When the difference between water temperature at water temperature and water inlet line is greater than the first preset value, the opening degree of electric control valve 6 can basis
Recirculated water automatically controls the output of PID regulator to be controlled, to meet the requirement of the safe and stable operation of synchronous motor 2.Its
In, the first preset value is to be configured previously according to the service requirement of synchronous motor 2, is specifically as follows 2.5 DEG C.Certainly, should
First preset value may be other values.
When the difference of the water temperature at water temperature and water inlet line at outlet conduit is less than or equal to the first preset value, motorized adjustment
Valve 6 can then be run so that opening degree (typically 3%, naturally it is also possible to be adjusted according to actual needs) is arranged,
To guarantee safe operation of the synchronous motor 2 under temporary stoppage or underloading.
A kind of hot roughing synchronous motor cooling system provided in an embodiment of the present invention, adjuster 110 are used for according to winding
Frequency converter 5 is adjusted in temperature, to adjust the revolving speed of motor using frequency converter 5, may include:
PID regulator controls the revolving speed of motor according to the maximum temperature of winding.
When the PID regulator using frequency converter timing system is adjusted frequency converter 5 according to the temperature of winding, PID
Adjuster can take the maximum temperature of winding as temperature actual feedback, realize and control turning for motor according to the temperature of winding
Speed, to complete the smooth adjustment of air output, to reduce the impact to motor and blower 3, to extend making for bearing of motor
With the service life, maintenance cost is reduced.
A kind of hot roughing synchronous motor cooling system provided in an embodiment of the present invention, PID regulator is according to the highest of winding
Temperature adjusts the revolving speed of motor, may include:
When the maximum temperature of winding is greater than the second preset value, PID regulator controls the revolving speed of motor.
When the PID regulator using frequency converter timing system adjusts the revolving speed of motor according to the maximum temperature of winding,
When the maximum temperature of winding is greater than the second preset value, the revolving speed of motor can be controlled according to the output of PID regulator
System, so that the motor of blower 3 may be at optimum output power state.
Wherein, the second preset value is to be specifically as follows 50 DEG C set by the operating status previously according to synchronous motor 2.
It certainly, may be other occurrences.
When the maximum temperature of winding is less than or equal to the second preset value, then motor can be run with 25Hz frequency, with full
The operation demand of sufficient synchronous motor 2, and play the role of protection to synchronous motor 2.
A kind of hot roughing synchronous motor cooling system provided in an embodiment of the present invention, frequency converter 5 can be G120 frequency converter.
Set frequency converter 5 is specifically as follows Siemens's G120 frequency converter in hot roughing synchronous motor cooling system, i.e.,
Use the revolving speed that motor is controlled using G120 frequency converter as the AC variable speed system of core.
Wherein, G120 frequency converter using modularized design, can flexible expansion, with outstanding maintenance and maintenance friendly,
And due to being integrated with safety protection function, keep the building of the automation with safeguard protection and drive system expensive
It is big to reduce, also it is effectively guaranteed man-machine safety.
In addition, being integrated with both bus communications of PROFIBUS and PROFINET in G120 frequency converter, there are more nodes,
Multiple network topology, higher performance.Wherein, it is not only in that it is wide by numerous users the advantages of PROFIBUS and PROFINET
The general bus used, and show the engineering and configuration structure of its optimization.
Referring to Fig. 5, it illustrates fan frequency conversion electric operation control circuit figures provided in an embodiment of the present invention.The embodiment of the present invention provides
A kind of hot roughing synchronous motor cooling system, can also include:
The incoming breaker 1QF1 that is connected with G120 frequency converter, be connected with incoming breaker 1QF1 and G120 frequency converter into
Line contactor 1KM1, the line contact device 1KM2 being connected with G120 frequency converter, the hot relay being connected with line contact device 1KM2 are protected
The bypass contactor 1KM3 for protecting device 1FR1, being connected with hot relay protector 1FR1 and incoming breaker 1QF1.
In addition in fan frequency conversion control circuit be arranged G120 frequency converter (PM240 power cell+CU240 control unit) it
Outside, the incoming breaker 1QF1 being connected with G120 frequency converter and inlet wire open circuit can also be set in fan frequency conversion control circuit
The inlet wire contactor that device 1QF1 is connected and is connected with G120 frequency converter and (is specifically connected with the PM240 power cell of G120 frequency converter)
1KM1, the line contact device 1KM2 for being connected with G120 frequency converter and (being specifically connected with the PM240 power cell of G120 frequency converter), with
Line contact device 1KM2 connected hot relay protector 1FR1, Ji Yure relay protector 1FR1 and incoming breaker 1QF1 is connected
Bypass contactor 1KM3.
Wherein, incoming breaker 1QF1 is used to that fault spread can be prevented in system jam with disengagement failure circuit,
Guarantee safe operation；Inlet wire contactor 1KM1 and line contact device 1KM2 is used for when G120 frequency converter can work normally, will
G120 frequency converter accesses in circuit, realizes the control to fan electromotor revolving speed by G120 frequency converter；Hot relay protector
1FR1 and bypass contactor 1KM3 is used for when G120 frequency converter breaks down in closed state (at this point, inlet wire contactor
1KM1, line contact device 1KM2 are in an off state) so that blower 3 can be switched in power frequency, to guarantee blower 3 just
Often operation, it can in fan frequency conversion control circuit, frequency conversion/industrial frequency control switching system is configured, in order in G120 frequency conversion
When device breaks down, the normal operation of blower 3 is not interfered with.
A kind of hot roughing synchronous motor cooling system provided in an embodiment of the present invention can also include:
Reactor 1L1 between inlet wire contactor 1KM1 and G120 frequency converter is set, is arranged in G120 frequency converter
Outlet reactor 1L2 between line contact device 1KM2.
Furthermore it is also possible to which setting is connected with inlet wire contactor 1KM1 and G120 frequency converter in fan frequency conversion control circuit
Reactor 1L1, and the outlet reactor 1L2 being connected with G120 frequency converter and line contact device 1KM2 is set.
Reactor 1L1 improves low-frequency transduction anti-interference for reducing main power source harmonic wave, surge and peak point current,
The power electronic element of driving mechanism is protected, increase power factor prevents tripping caused by the voltage spike of main power source.Outlet
Reactor 1L2 is for effectively inhibiting IGBT (Insulated Gate Bipolar Transistor, the insulation of G120 frequency converter
Grid bipolar junction transistor) switch when the instant high-voltage that generates, reduce adverse effect of this voltage to cable insulation and motor.
A kind of hot roughing synchronous motor cooling system provided in an embodiment of the present invention can also include:
The inlet wire filter 1Z1 being connected with G120 frequency converter and reactor 1L1.
In view of the duty factor of communication power supply band more (such as 6RA70 DC speed regulator 11, G120 frequency converter, friendship/straight
Galvanic electricity machine etc.), the noise generated by them can be by line propagation into other equipment, furthermore, it is contemplated that power supply line may be used also
It can be influenced by proximate circuitry or external electromagnetic field and generate noise voltage in conducting wire, therefore, electronics is set in order to reduce
Standby caused influence (i.e. electromagnetic interference), then can be arranged (the tool that is connected with G120 frequency converter in fan frequency conversion control circuit
Body is connected with the PM240 power cell of G120 frequency converter) and the inlet wire filter 1Z1 that is connected with reactor 1L1, using into
Line filter 1Z1 inhibits electromagnetic interference, to reduce to influence caused by electronic equipment, and reduces by 3 noise of blower, with for
Production operation personnel create good working environment.
A kind of hot roughing synchronous motor cooling system provided in an embodiment of the present invention, PLC1 are also used to occur when frequency converter 5
Alarm signal is issued when failure.
When frequency converter 5 breaks down, PLC1 can issue alarm signal, to remind operator on duty can be in time to frequency conversion
Device 5 carries out inspection and maintenance, so that it is guaranteed that motor and synchronous motor 2 can be safely operated.
Wherein, alarm signal is specifically as follows sound and light alarm signal, audio alert signal, buzzing alarm signal, indicator light
Flash alarm signal etc..
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the element that the process, method, article or equipment including a series of elements is intrinsic.?
Do not have in the case where more limiting, the element limited by sentence "including a ...", it is not excluded that including the element
There is also other identical elements in process, method, article or equipment.In addition, above-mentioned technology provided in an embodiment of the present invention
In scheme with correspond to the consistent part of technical solution realization principle and unspecified in the prior art, in order to avoid excessively repeat.
The foregoing description of the disclosed embodiments can be realized those skilled in the art or using the present invention.To this
A variety of modifications of a little embodiments will be apparent for a person skilled in the art, and the general principles defined herein can
Without departing from the spirit or scope of the present invention, to realize in other embodiments.Therefore, the present invention will not be limited
It is formed on the embodiments shown herein, and is to fit to consistent with the principles and novel features disclosed in this article widest
Range.
Claims (10)
1. a kind of hot roughing synchronous motor cooling system, including PLC, synchronous motor, the blower being connected with the synchronous motor, with
The synchronous motor is connected and includes the cooling water tank of inlet and outlet pipes, which is characterized in that further include: setting exists
Adjuster inside the PLC, the frequency converter being connected with the motor of the blower, the electric adjustable being connected with the cooling water tank
Save valve；
It is arranged on the winding of the synchronous motor, is connected with the PLC, the first temperature of temperature for detecting the winding
Sensor；
It is separately positioned on the water inlet line and is connected on the outlet conduit, with the PLC, for acquiring the water inlet pipe
The second temperature sensor of water temperature at road, and the third temperature sensor for acquiring the water temperature at the outlet conduit；
Wherein, the adjuster is for being adjusted the frequency converter according to the temperature of the winding, to utilize the frequency conversion
Device adjusts the revolving speed of the motor, and for according to the water temperature at the outlet conduit and the water temperature at the water inlet line it
Between difference adjust the opening degree of the electric control valve, to utilize the water outlet of cooling water tank described in the motorized adjustment valve regulation
Amount.
2. hot roughing synchronous motor cooling system according to claim 1, which is characterized in that the PLC is Siemens S7-
400PLC, the adjuster are PID regulator, further includes: pass through ProfiBus_DP fieldbus and the Siemens S7-
400PLC connected frequency-variable controller is connected by the ProfiBus_DP fieldbus with the Siemens S7-400 PLC
The station ET200 by machine, in which:
The frequency-variable controller is used to receive the temperature of the winding that first temperature sensor detects, and will it is described around
The temperature of group is sent to the Siemens S7-400 PLC；
The station ET200 is for receiving the second temperature sensor and the collected water of third temperature sensor by the machine
Temperature, and the water temperature is sent to the Siemens S7-400 PLC.
3. hot roughing synchronous motor cooling system according to claim 2, which is characterized in that the adjuster is according to
The difference between the water temperature at water temperature and the water inlet line at outlet conduit adjusts the opening degree of the electric control valve, with
Utilize the water yield of cooling water tank described in the motorized adjustment valve regulation, comprising:
When the difference between the water temperature at water temperature and the water inlet line at the outlet conduit is greater than the first preset value, institute
PID regulator is stated the opening degree of the electric control valve is adjusted.
4. hot roughing synchronous motor cooling system according to claim 2, which is characterized in that the adjuster is used for basis
The frequency converter is adjusted in the temperature of the winding, to adjust the revolving speed of the motor using the frequency converter, comprising:
The PID regulator controls the revolving speed of the motor according to the maximum temperature of the winding.
5. hot roughing synchronous motor cooling system according to claim 4, which is characterized in that the PID regulator according to
The maximum temperature of the winding adjusts the revolving speed of the motor, comprising:
When the maximum temperature of the winding is greater than the second preset value, the PID regulator carries out the revolving speed of the motor
Control.
6. hot roughing synchronous motor cooling system according to any one of claims 1 to 5, which is characterized in that the frequency conversion
Device is G120 frequency converter.
7. hot roughing synchronous motor cooling system according to claim 6, which is characterized in that further include:
The incoming breaker that is connected with the G120 frequency converter, be connected with the incoming breaker and the G120 frequency converter into
Line contactor, the line contact device being connected with the G120 frequency converter, the hot relay protector being connected with the line contact device,
The bypass contactor being connected with the hot relay protector and the incoming breaker.
8. hot roughing synchronous motor cooling system according to claim 7, which is characterized in that further include:
Reactor between the inlet wire contactor and the G120 frequency converter is set, is arranged in the G120 frequency converter
With the outlet reactor between the line contact device.
9. hot roughing synchronous motor cooling system according to claim 8, which is characterized in that further include:
The inlet wire filter being connected with the G120 frequency converter and the reactor.
10. hot roughing synchronous motor cooling system according to claim 1, which is characterized in that the PLC is also used to work as institute
It states when frequency converter breaks down and issues alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811613510.0A CN109656280A (en) | 2018-12-27 | 2018-12-27 | A kind of hot roughing synchronous motor cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811613510.0A CN109656280A (en) | 2018-12-27 | 2018-12-27 | A kind of hot roughing synchronous motor cooling system |
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| CN109656280A true CN109656280A (en) | 2019-04-19 |
Family
ID=66117326
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811613510.0A Pending CN109656280A (en) | 2018-12-27 | 2018-12-27 | A kind of hot roughing synchronous motor cooling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334693A (en) * | 2018-10-26 | 2019-02-15 | 中车南京浦镇车辆有限公司 | A kind of railway vehicle air conditioner air quantity control method |
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| CN205064334U (en) * | 2015-09-07 | 2016-03-02 | 福州盈泰电气科技有限公司 | Dust exhausting fan energy -saving control cabinet |
| CN106593924A (en) * | 2015-10-16 | 2017-04-26 | 无锡国煤重工机械有限公司 | Frequency conversion monitoring method for coal mining draught fan |
| CN207914330U (en) * | 2018-02-07 | 2018-09-28 | 西南铝业（集团）有限责任公司 | A kind of roughing mill and its temperature control system |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6357243B1 (en) * | 1999-01-19 | 2002-03-19 | Paul Efron | Remote control system for evaporative coolers |
| CN205064334U (en) * | 2015-09-07 | 2016-03-02 | 福州盈泰电气科技有限公司 | Dust exhausting fan energy -saving control cabinet |
| CN106593924A (en) * | 2015-10-16 | 2017-04-26 | 无锡国煤重工机械有限公司 | Frequency conversion monitoring method for coal mining draught fan |
| CN207914330U (en) * | 2018-02-07 | 2018-09-28 | 西南铝业（集团）有限责任公司 | A kind of roughing mill and its temperature control system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109334693A (en) * | 2018-10-26 | 2019-02-15 | 中车南京浦镇车辆有限公司 | A kind of railway vehicle air conditioner air quantity control method |
| CN109334693B (en) * | 2018-10-26 | 2020-10-02 | 中车南京浦镇车辆有限公司 | Air volume control method for air conditioner of railway vehicle |
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