CN106487283B - A kind of electric motor for pump shutdown running down mixing control loop - Google Patents
A kind of electric motor for pump shutdown running down mixing control loop Download PDFInfo
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- CN106487283B CN106487283B CN201610926596.7A CN201610926596A CN106487283B CN 106487283 B CN106487283 B CN 106487283B CN 201610926596 A CN201610926596 A CN 201610926596A CN 106487283 B CN106487283 B CN 106487283B
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- relay
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- pump
- speed
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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
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
- H02P3/22—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by short-circuit or resistive braking
-
- 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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
Abstract
The invention belongs to electrical equipment control fields; it is related to electric motor for pump and shuts down running down mixing control loop; the electrical equipment control circuit is mainly by electric motor for pump; main circuit; and control circuit, four part of speed relay composition; it is shut down in operational process in electric motor for pump; revolving speed and time by control pump; it adjusts the wiring of main circuit and adds the mode of resistance; reach and extends downtime; reduce as fluid inertia and caused by water impact, improve pump loop operation stability, achieve the purpose that extend pump and associated components service life.
Description
Technical field
The invention belongs to electrical equipment control fields, are related to a kind of electrical equipment control circuit system, in particular to a kind of electric motor for pump
It shuts down running down and mixes control loop.
Background technique
With the continuous development of industrial and agricultural production, vane pump be increasingly suitable for agricultural drainage and irrigation, municipal plumbing, thermoelectricity,
Nuclear power, petrochemical enterprise etc. are for fields such as circulating water supply, process feedwater and regional water transfer.And pump operation circuit mainly by
The components composition such as motor, pump itself, pipeline, measuring device, control valve class, stabilization control device, and electric motor for pump shuts down running down
Time is the Important Parameters during pump operation, is directly related to the stability and service life and safety of pump operation.Therefore
The extension of electric motor for pump shuts down the coasting time as the critical issue for influencing circuit security and stability.
The raising water pump coasting time of the prior art only exists the quality for increasing shaft or increase flywheel, improves its turn
Dynamic inertia may be implemented to extend the motor stopping coasting time in this way, but due to advocating syntonic type society now, to the energy
Saving using become now society mainstream.The measure for extending the electric motor for pump parking coasting time before needs to consume excessive
Electric energy is realized, does not meet the mainstream of current social.
Application No. is the running down model impeller of a seed nucleus main pump is disclosed in 201610008708.0 Chinese invention patent
Hydraulic Design Method, this improved method are while to consider that the impeller of core main pump is several by during designing core main pump impeller
What influence of the parameter to runnability and wheel rotation inertia.The major parameter of impeller to design both was well positioned to meet
Performance under operating normally, but can make impeller just has biggish rotary inertia to extend the coasting time.But the increasing in above-mentioned patent
The measure for adding the coasting time is Curve guide impeller method, but the improved method for being not involved with electric motor for pump control circuit.
For above-mentioned defect, the present inventor has invented a kind of setting for electric motor for pump shutdown running down mixing control loop
Meter method is added to an auxiliary mixing electric apparatus control apparatus on the basis of original motor, gives entire electric motor for pump temperature
Degree operation and shut down control loop design method, in certain degree alleviate as fluid inertia and caused by water flow rush
It hits, ensure that the safe and stable operation in pump operation circuit.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of electric motor for pump to shut down running down electrical equipment control circuit.By changing
The structure in kind electric motor for pump electrical equipment control circuit adjusts the wiring of main circuit ABC and adds the mode of resistance, makes electric motor for pump
Revolving speed reduces step by step in M stopping process, reaches extension downtime, reduces water impact and extends pump and associated components
The purpose of service life.
Realizing technical solution used by above-mentioned purpose is：
1, the electrical equipment control circuit includes electric motor for pump M, main circuit ABC and control circuit ab, speed relay KV tetra-
Part is shut down in operational process in electric motor for pump M, and mainly by the revolving speed of control pump, the main contacts of adjustment main circuit ABC is disconnected
Opening and closing is closed and the mode of addition resistance, achievees the purpose that extend downtime.
Its speed relay KV is mainly characterized by：The range of speeds of speed relay KV setting is 0.7~1.0 times specified
Revolving speed, and pass through main circuit ABC second branch A2B2C2The revolution speed of operation is lower than 0.7 times of rated speed.
2, the main circuit ABC includes first branch A1B1C1, second branch A2B2C2With third branch A3B3C3, described
One branch A1B1C1, second branch A2B2C2With third branch A3B3C3Using connection type in parallel；First branch A1B1C1With it is general
The main circuit of logical relay circuit for controlling motor is consistent：Circuit breaker Q F, one KM of main relay1Main contacts, electrothermal relay FR and electricity
Machine M series connection, speed relay KV are connected on motor M；Second branch A2B2C2In first branch A1B1C1On the basis of every electricity
All connected a resistance R on road, can reduce electric motor for pump M voltage in this way, so that the revolving speed of electric motor for pump M is made to degrade, and
Operation a period of time；Third branch A3B3C3In first branch A1B1C1On the basis of every circuit all connected two identical electricity
R is hindered, it in this way can be by the reduction of electric motor for pump M voltage again, to make the revolving speed of electric motor for pump M one section of degraded running again
Time.
3, control circuit ab is connected on any two tie lines node of the main circuit ABC；The control circuit includes
Three electrical circuits：Control circuit first branch a1, control circuit second branch a2, control circuit third branch a3, and three
Electrical circuit a1、a2、a3It connects after parallel connection with emergency stop button SB, electrothermal relay FR break contact and fuse FU；Three electricity
Device circuit a1、a2、a3It can be realized safety interlock, it, can be rapid in emergency stop button SB present on control circuit b circuit
Cut off the power supply of control circuit ab and main circuit ABC.
Control circuit first branch a1Upper start button SB2With one KM of main relay1After moving together contact is in parallel with compound button
SB1, one KM of main relay1Coil, two KM of main relay2Three KM of break contact and main relay3Break contact series connection；
Control circuit second branch a2Upper compound button SB1With two KM of main relay2After moving together contact is in parallel with speed relay
Device KV moving together contact, two KM of main relay2Coil, time relay KT coil, one KM of main relay1Break contact and main relay
Three KM of device3Break contact series connection；
Control circuit third branch a3Three KM of break contact and main relay of upper speed relay KV timing closing3Dynamic circuit breaker
After contact series with three KM of main relay3Moving together contact is in parallel, then the moving together contact disconnected with time relay KT delay,
Three KM of main relay3Coil, one KM of main relay1Two KM of break contact and main relay2Break contact series connection.
4, control circuit ab is mainly characterized by：
Control circuit second branch a2Upper there are a speed relay KV moving together contact, by the way that speed relay KV is arranged
The range of speeds, control speed relay KV moving together contact closure, allow electric motor for pump M to run one section under the revolving speed of low level-one
Time；
Control circuit third branch a3Upper there are a speed relay KV break contacts, when electric motor for pump revolving speed is in speed
When in the range of speeds of relay KV, speed relay KV break contact is disconnected, when electric motor for pump revolving speed is specified lower than 0.7 times
When revolving speed, speed relay KV break contact disconnects closure, control circuit third branch a3It is powered, allows electric motor for pump M lower
A period of time is run under the revolving speed of level-one；
Control circuit third branch a3There is also the moving together contact that time relay KT delay disconnects, and pass through setting control electricity
Road second branch a2On time relay KT coil delay time, the time relay KT delay disconnect moving together contact, the time
The moving together contact delay time that relay KT delay disconnects is set to t=4.3s, allows electric motor for pump M in branch a3T=4.3s is run,
Until shutting down.In control circuit third branch a3One three KM of main relay of middle speed relay KV break contact series connection3Dynamic circuit breaker touching
Point, control circuit third branch a3After energization, three KM of main relay3Break contact disconnects, and prevents short circuit.
According to above-mentioned steps, a kind of available electric motor for pump shutdown running down electrical equipment control circuit design method.
Beneficial effects of the present invention are：
The present invention adjusts the wiring and addition of main circuit ABC by the structure in improvement electric motor for pump electrical equipment control circuit
The mode of resistance reduces revolving speed in electric motor for pump M stopping process step by step, reaches extension downtime, reduce water impact with
And extend the purpose of the service life of pump and associated components.
Detailed description of the invention
Fig. 1 is electric motor for pump main circuit diagram.
Fig. 2 is electric motor for pump electric operation control circuit figure.
Description of symbols：
Electric motor for pump M, main circuit ABC, main circuit first branch A1B1C1, main circuit second branch A2B2C2, main circuit
Three branch A3B3C3, speed relay KV, control circuit ab, control circuit first branch a1, control circuit second branch a2, control
Circuit third branch a3, one KM of main relay1, two KM of main relay2, three KM of main relay3, time relay KT, electrothermal relay
FR, fuse FU, circuit breaker Q F, emergency stop button SB, compound button SB1, start button SB2, resistance R.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
The present invention mainly on the basis of original electric motor for pump control circuit, is added to running down mixing electrical equipment control circuit,
Control the motor stopping time, extend electric motor for pump down time, improve the stability of pump operation, and pump service life and
Repair time prevents the water impact in pump docking process and leads to pump and the entirely destruction in circuit.
This embodiment is to be improved on the basis of giving original electric motor for pump electric motor for pump control circuit：
Circuit breaker Q F is first closed, start button SB is then pressed2, one KM of main relay1Coil is powered, one KM of main relay1
Moving together contact is self-locking, one KM of main relay1Break contact disconnected branches a2With branch a3, realize interlocking.One KM of main relay1It is main
Contact closure, electric motor for pump M are operated normally.
When electric motor for pump M is shut down, compound button SB is pressed1, branch a1Power-off, one KM of main relay1Coil losing electricity, it is main
One KM of relay1Main contacts disconnects；But since the revolving speed of inertia electric motor for pump M is still close to rated speed (without departing from setting
The fixed range of speeds), so speed relay KV moving together contact is always to be closed, branch a2It is powered, two KM of main relay2Line
Circle and time relay KT coil are powered simultaneously, two KM of main relay2Moving together contact is self-locking, two KM of main relay2Break contact is disconnected
Pay wages road a1With branch a3, realize interlocking.Two KM of main relay2Main contacts closure, electric motor for pump M revolving speed degraded running, but this
When speed still speed relay KV setting the range of speeds in, so branch a3The break contact of speed relay KV is disconnected
Open what delay disconnected.Due to main circuit ABC second branch A1B2C3Specified turn of electric motor for pump M revolving speed less than 0.7 times of control
Speed, so over time, electric motor for pump M revolving speed is lower than the setting range of speed relay KV, branch a2Speed relay
The dynamic of KV opens contact disconnection, branch a2Power-off, two KM of main relay2Coil and time relay KT coil while power loss, main relay
Two KM of device2Main contacts disconnects.
In branch a3In, the break contact of speed relay KV is in branch a2Branch a while power-off3It is powered, main relay
Three KM3Coil is powered, three KM of main relay3Moving together contact is self-locking, three KM of main relay3Break contact disconnected branches a3In speed
Spend the break contact and branch a of relay KV timing closing1With branch a2, realize interlocking.Three KM of main relay3Main contacts closes
It closes, electric motor for pump M revolving speed degraded running again.After 4.3s, the dynamic circuit connector of the time relay KT delay disconnection for the disconnection that is delayed
Contact disconnects, branch a3Power-off, three KM of main relay3Coil losing electricity, three KM of main relay3Main contacts disconnects, and motor stops fortune
Row.
Claims (5)
1. a kind of electric motor for pump shuts down running down and mixes control loop, which is characterized in that including electric motor for pump M, main circuit ABC, with
And control circuit ab, tetra- part speed relay KV；
The main circuit ABC includes first branch A1B1C1, second branch A2B2C2With third branch A3B3C3, the first branch
A1B1C1, second branch A2B2C2With third branch A3B3C3Using connection type in parallel；First branch A1B1C1With common relay
The main circuit of device circuit for controlling motor is consistent：Circuit breaker Q F, one KM of main relay1Main contacts, electrothermal relay FR and motor M string
Connection, speed relay KV are connected on motor M；Second branch A2B2C2In first branch A1B1C1On the basis of every circuit all go here and there
A resistance R is joined；Third branch A3B3C3In first branch A1B1C1On the basis of every circuit all connected two it is identical
Resistance R；
Control circuit ab is connected on any two tie lines node of the main circuit ABC；The control circuit includes three electricity
Device circuit：Control circuit first branch a1, control circuit second branch a2, control circuit third branch a3, and three electric appliances return
Road a1、a2、a3It connects after parallel connection with emergency stop button SB, electrothermal relay FR break contact and fuse FU；Three electrical circuits
a1、a2、a3It can be realized safety interlock, in emergency stop button SB present on control circuit ab, control electricity can be cut off rapidly
The power supply of road ab and main circuit ABC；
Control circuit first branch a1Upper start button SB2With one KM of main relay1After moving together contact is in parallel with compound button SB1、
One KM of main relay1Coil, two KM of main relay2Three KM of break contact and main relay3Break contact series connection；
Control circuit second branch a2Upper compound button SB1With two KM of main relay2After moving together contact is in parallel with speed relay KV
Moving together contact, two KM of main relay2Coil, time relay KT coil, one KM of main relay1Break contact and main relay three
KM3Break contact series connection；
Control circuit third branch a3Three KM of upper speed relay KV break contact and main relay3Break contact series connection after with master
Three KM of relay3Moving together contact is in parallel, then disconnected with time relay KT delay moving together contact, three KM of main relay3Line
Circle, one KM of main relay1Two KM of break contact and main relay2Break contact series connection.
2. a kind of electric motor for pump shuts down running down and mixes control loop according to claim 1, which is characterized in that the speed after
The rated speed that the range of speeds of electric appliance KV setting is 0.7~1.0 times, and pass through main circuit ABC second branch A2B2C2Operation
Revolution speed be lower than 0.7 times of rated speed.
3. a kind of electric motor for pump shuts down running down and mixes control loop according to claim 1, which is characterized in that the control electricity
Road second branch a2Upper there are a speed relay KV moving together contact, by the way that the range of speeds of speed relay KV, control is arranged
The closure of speed relay KV moving together contact processed allows electric motor for pump M to run a period of time under the revolving speed of low level-one.
4. a kind of electric motor for pump shuts down running down and mixes control loop according to claim 1, which is characterized in that control circuit the
Three branch a3Upper there are a speed relay KV break contacts, when electric motor for pump revolving speed is in the range of speeds of speed relay KV
When interior, speed relay KV break contact is disconnected, when electric motor for pump revolving speed is lower than 0.7 times of rated speed, speed relay
KV break contact closure, control circuit third branch a3It is powered, when electric motor for pump M being allowed to run one section under the revolving speed of lower level-one
Between.
5. a kind of electric motor for pump shuts down running down and mixes control loop according to claim 1, which is characterized in that control circuit the
Three branch a3There is also the moving together contact that time relay KT delay disconnects, by the way that control circuit second branch a is arranged2On when
Between relay KT coil delay time, the time relay KT delay disconnect moving together contact, the time relay KT delay disconnect
Moving together contact delay time is set to t=4.3s, allows electric motor for pump M in branch a3T=4.3s is run, until shutting down；In control electricity
Road third branch a3One three KM of main relay of middle speed relay KV break contact series connection3Break contact, control circuit third branch
Road a3After energization, three KM of main relay3Break contact disconnects, and prevents short circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610926596.7A CN106487283B (en) | 2016-10-31 | 2016-10-31 | A kind of electric motor for pump shutdown running down mixing control loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610926596.7A CN106487283B (en) | 2016-10-31 | 2016-10-31 | A kind of electric motor for pump shutdown running down mixing control loop |
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| Publication Number | Publication Date |
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| CN106487283A CN106487283A (en) | 2017-03-08 |
| CN106487283B true CN106487283B (en) | 2018-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610926596.7A Active CN106487283B (en) | 2016-10-31 | 2016-10-31 | A kind of electric motor for pump shutdown running down mixing control loop |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107168223A (en) * | 2017-05-16 | 2017-09-15 | 宣化钢铁集团有限责任公司 | A kind of automatic control system of coke discharging and dedusting blower fan |
| CN107872119B (en) * | 2017-12-15 | 2023-01-24 | 东方电气(德阳)电动机技术有限责任公司 | Motor generator set capable of increasing load rotational inertia and control operation method thereof |
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| CN101604944A (en) * | 2009-07-03 | 2009-12-16 | 山东华力电机集团股份有限公司 | The energy-consumption braking control module of threephase asynchronous |
| CN201541219U (en) * | 2009-08-26 | 2010-08-04 | 潘祥林 | Automatic control circuit of motor |
| CN102549909A (en) * | 2009-10-09 | 2012-07-04 | 萨甘安全防护公司 | Variable damping circuit for a synchronous servomotor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008045247A1 (en) * | 2008-09-01 | 2010-03-04 | Siemens Aktiengesellschaft | Inverters with distributed braking resistors |
| JP5923822B2 (en) * | 2012-02-09 | 2016-05-25 | ミネベア株式会社 | Drive control device for brushless motor |
-
2016
- 2016-10-31 CN CN201610926596.7A patent/CN106487283B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101604944A (en) * | 2009-07-03 | 2009-12-16 | 山东华力电机集团股份有限公司 | The energy-consumption braking control module of threephase asynchronous |
| CN201541219U (en) * | 2009-08-26 | 2010-08-04 | 潘祥林 | Automatic control circuit of motor |
| CN102549909A (en) * | 2009-10-09 | 2012-07-04 | 萨甘安全防护公司 | Variable damping circuit for a synchronous servomotor |
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| CN106487283A (en) | 2017-03-08 |
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