CN106452274A - Frequency conversion-power frequency-frequency conversion control method based on separator - Google Patents
Frequency conversion-power frequency-frequency conversion control method based on separator Download PDFInfo
- Publication number
- CN106452274A CN106452274A CN201610493707.XA CN201610493707A CN106452274A CN 106452274 A CN106452274 A CN 106452274A CN 201610493707 A CN201610493707 A CN 201610493707A CN 106452274 A CN106452274 A CN 106452274A
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- Prior art keywords
- frequency
- circuit
- frequency conversion
- catalyst
- relay
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- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
Abstract
The present invention discloses a frequency conversion-power frequency-frequency conversion control method based on a separator. A control circuit of the frequency conversion-power frequency-frequency conversion based on the separator is provided. The control circuit includes a frequency converter, a separator, a booster pump, a variable frequency starting circuit, a power frequency operation circuit, an operation circuit and a booster pump operation circuit. According to the invention, a motor is started, and the current is too big, so a frequency converter is required starting the motor; because of the specificity of the separator in the operation process, a slagging program is required, the slagging current is too big in this process to easily cause the overload of the frequency convertor, and the separator needs to convert the power frequency for the slagging control; and because the too-long brake time of the separator caused by inertia downtime or fault downtime goes against the effective utilization of the time and the timely cleaning of the separator after downtime, and the cost of the brake resistor is needed to be increased so as to select the frequency conversion downtime from the power frequency downtime to allow the residual not to attach to the separator and reduce the mechanical loss of the separator.
Description
Technical field
The present invention relates to a kind of control method of the frequency conversion-industrial frequency-variable frequency based on seperator, belong to seperator control technology
Field.
Background technology
According to the applicant understood with the expansion of domestic and international market, Nanjing Zhong Chuan oasis seperator is at home and abroad commercially available
Be increasingly widely applied, in order to meet the market competition of fierceness, concurrently separate type number and technology and also improve continuous,
I takes charge of as the supporting electric control system of seperator also in continuous technological innovation simultaneously.Major brand on seperator market at present
Abroad mainly there is Alfa Laval in company, and Wei Si cuts down inner Asia.Domestic mainly have huge energy in Nanjing Zhong Chuan oasis and Jiangsu etc., and enterprise is mutual
Between competition extremely fierce.Seperator electric-control system is towards automatization, intelligent, and miniaturization develops, and seperator is substantially
All adopt variable frequency starting, the method for power frequency operation, and shutting down is all free parking, and the method often realizing ramp to stop is all
Plus braking resistor, this method not only increases cost, is provided with certain requirement also to client, makes user beyond affordability,
Therefore conventional seperator is difficult to meet the actual requirement of modern enterprise.
Content of the invention
It is an object of the invention to：The problem existing for above-mentioned prior art, propose a kind of frequency conversion based on seperator-
The control method of industrial frequency-variable frequency.
In order to reach object above, the concrete technical scheme of the present invention is as follows：A kind of frequency conversion based on seperator of the present invention-
Industrial frequency-variable frequency control method, including the control circuit of the frequency conversion-industrial frequency-variable frequency based on seperator, described control circuit includes
Converter G1, seperator M1, booster pump M2, variable frequency starting circuit, power frequency operation circuit, operation circuit and supercharging pump operation electricity
Road；
Further, the two ends of described converter G1 are parallel with thermorelay FR1, and one end of described converter G1 connects seperator
M1, the other end connects the first miniature circuit breaker S1；
Further, described booster pump M2 is connected with the first miniature circuit breaker S1；
Further, described variable frequency starting circuit includes two catalysts connected（KM2、KM3）With a relay K1；
Further, described power frequency operation circuit includes two catalysts connected（KM3、KM2）With a relay K2；
Further, the described circuit that runs is including the display lamp H1 connecting and relay K1, in parallel on described relay K1
There is another relay K2；
Further, described supercharging pump operation circuit includes catalyst KM4 and the relay K4 connecting；
Further, described variable frequency starting circuit, power frequency operation circuit, operation circuit, supercharging pump operation circuit are all micro- with second
Type chopper S2 is connected；
Further, it is provided with transformator T2 between described first miniature circuit breaker S1 and the second miniature circuit breaker S2.
Further, described control method includes that frequency conversion is changed into power frequency and power frequency is changed into the job step of frequency conversion；
Step one, variable frequency starting-power frequency operation：When by start button, relay K1 action, catalyst KM2 action then, then
Frequency-conversion starting motor, reaches time delay 1min after full speed 50HZ, relay K2 action, catalyst KM3 adhesive then, catalyst
KM2 disconnects, and is run by this VF to WF；
Step 2, power frequency operation-frequency conversion brake：When pressing stop botton, the leading dead electricity of catalyst KM3, after time delay 5S, catalyst
KM2 adhesive, by tracing motor rotation speed by frequency transformer, time delay 2S after tracing into rotating speed, relay K1 disconnect, and converter G1 loses
Enabling signal then reduces speed now parking, after time delay deceleration time, disconnects catalyst KM2, that is, shut down flow process and terminate.
Further, described catalyst K1 and K2 is provided with electrical or mechanical interlocking.
Further, described thermorelay is also in series with catalyst KM3.
Further, the circuit of described booster pump is provided with catalyst KM4 and the second circuit breaker Q 2.
Further, described converter and power supply junction are additionally provided with the first circuit breaker Q 1.
Further, described transformator T2 turns 220V transformator for 380V.
A kind of frequency conversion-industrial frequency-variable frequency control method based on seperator of the present invention, motor is on startup due to starting current
Excessive, need to start motor with converter；Due to the particularity of seperator in running, need deslagging program, here mistake
In journey, deslagging electric current is excessive, easily causes the overload of converter, therefore needs to go to power frequency and carries out letting cinder control；Seperator is due to used
Property shut down or during disorderly closedown braking time long, be both unfavorable for the effectively utilizes of time, be also unfavorable for that seperator stopped
Timely cleaning afterwards, then plus in the case that braking resistor need to increase cost, have selected and frequency conversion is switched to by power frequency shut down.
Points for attention are as follows：1. catalyst K1 and K2 should have electrical or mechanical interlocking.2. during the action of converter defencive function,
Chopper or make reseting terminal short circuit reset can be turned off.3. the given of time relay KT1, KT2 should exceed motor
The free parking time or the frequency conversion speed-down time.4. the switching of converter operating, stop button to be used is run to from common frequency power network
Motor is made to carry out after stopping again.5. common frequency power network must be consistent with the phase sequence that converter exports.
The present invention has the beneficial effect that：Motor of the present invention on startup because starting current is excessive, need with converter Lai
Start motor；Due to the particularity of seperator in running, need deslagging program, deslagging electric current is excessive in the process, hold
Easily cause the overload of converter, therefore need to go to power frequency and carry out letting cinder control；Seperator is shut down or disorderly closedown due to inertia
When braking time long, be both unfavorable for the effectively utilizes of time, be also unfavorable for seperator stop after timely cleaning, then plus
In the case that braking resistor need to increase cost, have selected and frequency conversion shutdown is switched to by power frequency, the advantage so controlling is by change frequency band
Dynamic brake, can allow loom be cleaned in time, allow residue not to be attached on seperator on the basis of the minimizing time, reduce seperator
Mechanical loss.
Brief description
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the circuit diagram of the present invention.
In figure：G1 is converter, controlled motor, and converter is provided with overload shutdown protection, overcurrent protection；Q1 first open circuit
Device, Q2 is the second chopper, is converter and motor offer power supply；S1 is the first miniature circuit breaker, and S2 is the second miniature open circuit
Device, provides for control loop and controls power supply；KM2, KM3, KM4 are catalyst；K1, K2 are relay, control frequency conversion and power frequency
Contactor coil；FR1 is thermorelay, when motor is in power frequency operation, if current of electric exceeds thermorelay and arranges electric current,
Then disconnect play protection motor effect, heat continue on have SR to can be used for resetting；H1 is display lamp.
Specific implementation method
As shown in figure 1, a kind of frequency conversion-industrial frequency-variable frequency control method based on seperator of the present invention, including based on seperator
The control circuit of frequency conversion-industrial frequency-variable frequency, described control circuit includes converter G1, seperator M1, booster pump M2, variable frequency starting
Circuit, power frequency operation circuit, operation circuit and supercharging pump operation circuit；
The two ends of converter G1 of the present invention are parallel with thermorelay FR1, and one end of described converter G1 connects seperator M1,
The other end connects the first miniature circuit breaker S1；Described booster pump M2 is connected with the first miniature circuit breaker S1；Described variable frequency starting electricity
Road includes two catalysts connected（KM2、KM3）With a relay K1；Described power frequency operation circuit includes two connecting
Catalyst（KM3、KM2）With a relay K2；The described circuit that runs is including the display lamp H1 connecting and relay K1, institute
State and another relay K2 is parallel with relay K1；Described supercharging pump operation circuit includes catalyst KM4 and the relay connected
Device K4；Described variable frequency starting circuit, power frequency operation circuit, run circuit, supercharging pump operation circuit all with the second miniature circuit breaker
S2 is connected；It is provided with transformator T2 between described first miniature circuit breaker S1 and the second miniature circuit breaker S2；
Control method of the present invention includes that frequency conversion is changed into power frequency and power frequency is changed into the job step of frequency conversion；
Step one, variable frequency starting-power frequency operation：When by start button, relay K1 action, catalyst KM2 action then, then
Frequency-conversion starting motor, reaches time delay 1min after full speed 50HZ, relay K2 action, catalyst KM3 adhesive then, catalyst
KM2 disconnects, and is run by this VF to WF；
Step 2, power frequency operation-frequency conversion brake：When pressing stop botton, the leading dead electricity of catalyst KM3, after time delay 5S, catalyst
KM2 adhesive, by tracing motor rotation speed by frequency transformer, time delay 2S after tracing into rotating speed, relay K1 disconnect, and converter G1 loses
Enabling signal then reduces speed now parking, after time delay deceleration time, disconnects catalyst KM2, that is, shut down flow process and terminate.
Catalyst K1 and K2 of the present invention is provided with electrical or mechanical interlocking.Described thermorelay is also in series with catalyst
KM3.The circuit of described booster pump is provided with catalyst KM4 and the second circuit breaker Q 2.Described converter G1 is with power supply junction also
It is provided with the first circuit breaker Q 1.Described transformator T2 turns 220V transformator for 380V.
A kind of frequency conversion-industrial frequency-variable frequency control method based on seperator of the present invention, motor is on startup due to starting current
Excessive, need to start motor with converter；Due to the particularity of seperator in running, need deslagging program, here mistake
In journey, deslagging electric current is excessive, easily causes the overload of converter, therefore needs to go to power frequency and carries out letting cinder control；Seperator is due to used
Property shut down or during disorderly closedown braking time long, be both unfavorable for the effectively utilizes of time, be also unfavorable for that seperator stopped
Timely cleaning afterwards, then plus in the case that braking resistor need to increase cost, have selected and frequency conversion is switched to by power frequency shut down.
Points for attention are as follows：1. catalyst K1 and K2 should have electrical or mechanical interlocking.2. during the action of converter defencive function,
Chopper or make reseting terminal short circuit reset can be turned off.3. the given of time relay KT1, KT2 should exceed motor
The free parking time or the frequency conversion speed-down time.4. the switching of converter operating, stop button to be used is run to from common frequency power network
Motor is made to carry out after stopping again.5. common frequency power network must be consistent with the phase sequence that converter exports.
Motor of the present invention, on startup because starting current is excessive, needs to start motor with converter；In running
Due to the particularity of seperator, need deslagging program, deslagging electric current is excessive in the process, easily cause the overload of converter,
Therefore need to go to power frequency and carry out letting cinder control；Seperator due to inertia shut down or during disorderly closedown braking time long, neither
Beneficial to the effectively utilizes of time, be also unfavorable for seperator stop after timely cleaning, then plus braking resistor need to increase cost
In the case of, have selected and frequency conversion shutdown is switched to by power frequency, the advantage so controlling is to drive brake by frequency conversion, reduces the base of time
Loom can be allowed on plinth to be cleaned in time, allow residue not to be attached on seperator, reduce the mechanical loss of seperator.
In addition to the implementation, the present invention can also have other implementations.All employing equivalents or equivalent transformation shape
The technical scheme becoming, all falls within the protection domain of application claims.
Claims (6)
1. a kind of frequency conversion-industrial frequency-variable frequency control method based on seperator it is characterised in that：
Including the control circuit of the frequency conversion-industrial frequency-variable frequency based on seperator, described control circuit includes converter（G1）, separate
Machine（M1）, booster pump（M2）, variable frequency starting circuit, power frequency operation circuit, run circuit and supercharging pump operation circuit；
Described converter（G1）Two ends be parallel with thermorelay（FR1）, described converter（G1）One end connect seperator
（M1）, other end connection the first miniature circuit breaker（S1）；
Described booster pump（M2）With the first miniature circuit breaker（S1）It is connected；
Described variable frequency starting circuit includes two catalysts connected（KM2、KM3）With a relay（K1）；
Described power frequency operation circuit includes two catalysts connected（KM3、KM2）With a relay（K2）；
The described circuit that runs is including the display lamp connected（H1）And relay（K1）, described relay（K1）On be parallel with another
One relay（K2）；
Described supercharging pump operation circuit includes the catalyst connected（KM4）And relay（K4）；
Described variable frequency starting circuit, power frequency operation circuit, run circuit, supercharging pump operation circuit all with the second miniature circuit breaker
（S2）It is connected；
Described first miniature circuit breaker（S1）With the second miniature circuit breaker（S2）Between be provided with transformator（T2）；
Described control method includes that frequency conversion is changed into power frequency and power frequency is changed into the job step of frequency conversion；
Step one, variable frequency starting-power frequency operation：When by start button, relay（K1）Action, catalyst then（KM2）Dynamic
Make, then frequency-conversion starting motor, reach time delay 1min after full speed 50HZ, relay（K2）Action, catalyst then（KM3）Inhale
Close, catalyst（KM2）Disconnect, run by this VF to WF；
Step 2, power frequency operation-frequency conversion brake：When pressing stop botton, catalyst（KM3）Leading dead electricity, after time delay 5S, contact
Device（KM2）Adhesive, by tracing motor rotation speed by frequency transformer, time delay 2S after tracing into rotating speed, relay（K1）Disconnect, converter
（G1）Lose enabling signal then to reduce speed now parking, after time delay deceleration time, disconnect catalyst（KM2）, that is, shut down flow process knot
Bundle.
2. a kind of frequency conversion-industrial frequency-variable frequency control method based on seperator according to claim 1 it is characterised in that：Institute
State catalyst（K1）With（K2）It is provided with electrical or mechanical interlocking.
3. a kind of frequency conversion-industrial frequency-variable frequency control method based on seperator according to claim 1 it is characterised in that：Institute
State thermorelay and be also in series with catalyst（KM3）.
4. a kind of frequency conversion-industrial frequency-variable frequency control method based on seperator according to claim 1 it is characterised in that：Institute
The circuit stating booster pump is provided with catalyst（KM4）With the second chopper（Q2）.
5. a kind of frequency conversion-industrial frequency-variable frequency control method based on seperator according to claim 1 it is characterised in that：Institute
State converter and be additionally provided with the first chopper with power supply junction（Q1）.
6. a kind of frequency conversion-industrial frequency-variable frequency control method based on seperator according to claim 1 it is characterised in that：Institute
State transformator（T2）Turn 220V transformator for 380V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610493707.XA CN106452274A (en) | 2016-06-29 | 2016-06-29 | Frequency conversion-power frequency-frequency conversion control method based on separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610493707.XA CN106452274A (en) | 2016-06-29 | 2016-06-29 | Frequency conversion-power frequency-frequency conversion control method based on separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106452274A true CN106452274A (en) | 2017-02-22 |
Family
ID=58183770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610493707.XA Pending CN106452274A (en) | 2016-06-29 | 2016-06-29 | Frequency conversion-power frequency-frequency conversion control method based on separator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109127168A (en) * | 2018-07-24 | 2019-01-04 | 南京中船绿洲机器有限公司 | A kind of control method based on disk centrifugal separator deslagging |
| CN110277948A (en) * | 2019-06-19 | 2019-09-24 | 重庆红岩建设机械制造有限责任公司 | A kind of bridge inspection car VF to WF control system and method |
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| CN201623689U (en) * | 2010-04-29 | 2010-11-03 | 北京碧圣联合水务有限公司 | Frequency-conversion control cabinet |
| CN204231257U (en) * | 2014-12-05 | 2015-03-25 | 陕西科沃电气股份有限公司 | A kind of oil pumper frequency-changing control system |
| CN105262375A (en) * | 2015-11-16 | 2016-01-20 | 重庆师范大学 | Centrifuge frequency-converting control circuit and control method thereof |
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2016
- 2016-06-29 CN CN201610493707.XA patent/CN106452274A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5883486A (en) * | 1998-01-20 | 1999-03-16 | American Standard Inc. | Apparatus and method for soft-starting a three-phase motor |
| CN201623689U (en) * | 2010-04-29 | 2010-11-03 | 北京碧圣联合水务有限公司 | Frequency-conversion control cabinet |
| CN204231257U (en) * | 2014-12-05 | 2015-03-25 | 陕西科沃电气股份有限公司 | A kind of oil pumper frequency-changing control system |
| CN105262375A (en) * | 2015-11-16 | 2016-01-20 | 重庆师范大学 | Centrifuge frequency-converting control circuit and control method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109127168A (en) * | 2018-07-24 | 2019-01-04 | 南京中船绿洲机器有限公司 | A kind of control method based on disk centrifugal separator deslagging |
| CN110277948A (en) * | 2019-06-19 | 2019-09-24 | 重庆红岩建设机械制造有限责任公司 | A kind of bridge inspection car VF to WF control system and method |
| CN110277948B (en) * | 2019-06-19 | 2021-01-19 | 重庆红岩建设机械制造有限责任公司 | Bridge maintenance vehicle frequency conversion to power frequency control system and method |
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Application publication date: 20170222 |