CN110165964A - A kind of intelligent control method and its control device exchanging immersible pump - Google Patents
A kind of intelligent control method and its control device exchanging immersible pump Download PDFInfo
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- CN110165964A CN110165964A CN201910497238.2A CN201910497238A CN110165964A CN 110165964 A CN110165964 A CN 110165964A CN 201910497238 A CN201910497238 A CN 201910497238A CN 110165964 A CN110165964 A CN 110165964A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
-
- 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/14—Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
Abstract
The invention discloses a kind of intelligent control methods and control device for exchanging immersible pump, comprising the following steps: acquisition calibration obtains the multiple groups water shortage electric current theoretical value B and overload current value D of motor under normal voltage；Real-time voltage of the load on motor is acquired, real-time voltage value A is obtained, obtains the water shortage electric current theoretical value under real-time voltage value A；Real-time current value C is compared with water shortage electric current theoretical value B and overload current D；If real-time current value C is less than water shortage electric current theoretical value B, determine motor for exsiccosis；If real-time current value C is greater than overload current value D, motor is determined for overload, motor enters positive-negative rotation state or rotates forward recoil state at this time.The present invention can real-time current to motor in immersible pump and real-time voltage detect, according to the real-time current value and real-time voltage value of detection, water shortage judgement is carried out to motor, overload determines, positive and negative rotation and rotates forward and restores to determine.
Description
Technical field
The present invention relates to immersible pump control technology field, in particular to a kind of intelligent control method for exchanging immersible pump and its
Control device.
Background technique
Immersible pump is exchanged due to the factor of use environment, wherein the variable quantity of voltage is bigger, can be according to the stabilization of power grid
Property exist fluctuation the case where, while as the difference of the cable line length used and lead to voltage loss, actual pump work
The low-voltage of work is below or equal to supply voltage.Due to the variation of voltage, electric current can also change therewith, the variation of electric current
Many intelligent decisions are caused to go wrong, wherein than more serious the phenomenon that water shortage.Wherein water shortage is possible to the case where occurring packet
Containing the just common water of user, voltage is relatively high, but the water shortage threshold value B being arranged can enter by mistake through water shortage, motor under this kind of state
It shuts down；In second situation, the just common water of user, voltage is relatively low, and the B value under the conditions of this kind will appear high situation, leads
Machine continuous service is sent a telegraph, can not be shut down, if the temperature protection that motor itself embeds does not act on, motor electric leakage is will lead to or burns
Motor；The external hardware water level sensor detection of the third situation, in practice since use environment water level height has fluctuation, when
Water level sensor will lead to motor frequent starting when floating up and down, and high current can all be had by starting, and influence the motor longevity
It orders, damages motor under serious conditions.
Summary of the invention
The object of the present invention is to provide a kind of intelligent control methods and its control device for exchanging immersible pump.The present invention
Can real-time current to motor in immersible pump and real-time voltage detect, according to the real-time current value and real-time voltage of detection
Value carries out water shortage judgement, overload judgement, positive and negative rotation and rotating forward to motor and restores to determine, protects motor, motor is avoided to be burnt
It ruins.
A kind of technical solution of the present invention: intelligent control method exchanging immersible pump, comprising the following steps:
S1, acquisition calibration obtains the multiple groups water shortage electric current theoretical value B and overload current value D of motor under normal voltage, more
Group water shortage electric current theoretical value B group is shaped to inquiry table；
S2, real-time voltage of the load on motor is acquired, obtains real-time voltage value A, is obtained by looking into fast inquiry table
Water shortage electric current theoretical value B under to real-time voltage value A, and acquisition is acquired to motor operation real-time current value C；
S3, real-time current value C is compared with water shortage electric current theoretical value B and overload current D, according to comparison result to electricity
The operating status of machine is determined；
If S4, real-time current value C are less than water shortage electric current theoretical value B, determine motor for exsiccosis；If real-time current value
When C is greater than overload current value D, then motor is determined for overload, motor enters positive-negative rotation state or rotates forward recoil state at this time.
In the intelligent control method of above-mentioned exchange immersible pump, the method to the real-time voltage acquisition on motor
It is that by voltage transformer come real-time voltage is acquired on motor to load, and real-time voltage value A will be collected and fed back to
Single-chip microcontroller.
In the intelligent control method of exchange immersible pump above-mentioned, the method to the real-time current acquisition on motor
It is to be acquired by current transformer to the real-time current of motor, and collected real-time current value C is fed back into monolithic
Machine.
In the intelligent control method of exchange immersible pump above-mentioned, it is provided with parameter packet in the single-chip microcontroller, is wrapped in parameter packet
Contain: real-time voltage value A, water shortage electric current theoretical value B, motor operation real-time current value C, overload current value D, overload rotate forward time E,
Overload recovery time T, overloading reversing time F and positive and negative rotation allows number of run N, water shortage time M, when overload time P, water shortage
Between threshold value H and overload time threshold value J.
In the intelligent control method of exchange immersible pump above-mentioned, the motor exsiccosis determination method is to pass through electric current
Mutual inductor and voltage transformer get the real-time current value C and real-time voltage value A of current motor operation；
When the motor operation real-time current value C currently obtained is theoretical in the water shortage electric current being less than at real-time voltage value A
Value B, water shortage time M are greater than the water shortage time threshold H of setting, and motor enters water shortage, and motor can be re-introduced into after I minutes
It operates normally, if still water shortage, persistently waits；
If duration M is less than the water shortage time threshold H of setting, motor continuous service, if occurring in this process
Voltage change, water shortage electric current theoretical value B can be refreshed again, be determined again, so as to reach accurate judgement motor
Exsiccosis.
In the intelligent control method of exchange immersible pump above-mentioned, the judgment method of the motor overload state is to pass through electricity
Real-time current the value C, real-time current value C that current transformer gets current motor operation are greater than overload current value D, if lasting detection
Overload time P is greater than the overload time threshold value J of setting, then motor enters positive-negative rotation state, is rotating forward in time E, in real time electricity
Flow valuve C is persistently greater than overload current value D, then shuts down waiting, restores state, after overload recovery time T, motor into motor overload
It then rotates forward, continues repeatedly again after waiting time of machine halt T after overloading reversing time F into reversion, when more than setting positive and negative rotation
After times N, then stopping alarm, does not allow to be again started up；If current transformer detects real-time current value C rotating forward in time E
Less than overload current value D, then it is judged to replying, motor operates normally.
A kind of control device exchanging immersible pump, including voltage transformer, current transformer, single-chip microcontroller, driving power device
Part, warning device, immersible pump and external power supply；
The voltage transformer is detected for loading the real-time voltage in immersible pump on motor；
The current transformer, for being detected to the real-time current by motor in immersible pump；
The single-chip microcontroller is connect, for receiving electric current by weak electric signal with current transformer and voltage transformer
The real-time current value C of the motor operation of mutual inductor detection receives the real-time voltage value A of the motor operation of voltage transformer detection,
And the relevant parameter for being arranged in parameter packet；
By allowing the electricity by high current between motor in the external power supply, power drive device and immersible pump
Cable connection, the power drive device work for controlling in immersible pump；
It is controlled between the single-chip microcontroller and power drive device by weak electric signal, the power drive device connects
The control instruction that single-chip microcontroller issues is received, and the control instruction of single-chip microcontroller controls motor in immersible pump based on the received；
The warning device, is connected with single-chip microcontroller, for alarming.
Compared with prior art, the invention has the following advantages that
1, the present invention carries out multiple shapes of immersible pump using the hardware fit system of current transformer and voltage transformer
Judgement under state, overload determining comprising water shortage determines, positive and negative rotation and rotating forward restore to determine.
After reading current voltage value in the set control system, carry out according to different voltage the assignment of parameter.By
In the use environment of immersible pump or using voltage loss caused by cable, lead to voltage not and be stable value, electric current can be with
The variation of voltage and change, under certain conditions, curent change lower than setting water shortage value, will lead to water shortage can not determine, hold
The case where it is excessively high that continuous operation will lead to motor temperature, burns motor is shared using current transformer and voltage transformer and is solved
Under different voltages, the case where water shortage caused by electric current is different can not determine, solve on the market due to increasing water level sensor
The case where caused frequent motor starting damage is clicked and can not decide that water shortage to low water level, appropriate is high.
2, current transformer of the invention cooperation voltage transformer can accurately determine current electricity by way of looking into news
The theoretical value of the water shortage value B of pressure, to guarantee the normal water shortage of immersible pump.
Detailed description of the invention
Fig. 1 is the control flow chart of control method of the present invention；
Fig. 2 is control principle drawing of the invention.
1- voltage transformer；2- current transformer；3- single-chip microcontroller；4- driving power device；5- warning device；6- diving
Pump；7- external power supply.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
Embodiment: a kind of intelligent control method exchanging immersible pump, as shown in Figure 1, comprising the following steps:
S1, acquisition calibration obtains the multiple groups water shortage electric current theoretical value B and overload current value D of motor under normal voltage, more
Group water shortage electric current theoretical value B group is shaped to inquiry table；So that current transformer cooperation voltage transformer can by way of looking into news
Accurately to determine the theoretical value of the water shortage value B under current voltage, to guarantee the normal water shortage of immersible pump.
S2, real-time voltage of the load on motor is acquired, obtains real-time voltage value A, is obtained by looking into fast inquiry table
Water shortage electric current theoretical value B under to real-time voltage value A, and acquisition is acquired to motor operation real-time current value C；
The method acquired to the real-time voltage on motor is, by voltage transformer come real on motor to load
When voltage be acquired, and real-time voltage value A will be collected and feed back to single-chip microcontroller；
The method acquired to the real-time current on motor is, by current transformer come the real-time current to motor
It is acquired, and collected real-time current value C is fed back into single-chip microcontroller；
It is provided with parameter packet in the single-chip microcontroller, includes in parameter packet: real-time voltage value A, water shortage electric current theoretical value B, electricity
Machine runs real-time current value C, overload current value D, and overload rotates forward time E, overload recovery time T, overloads reversing time F and just
Reversion allows number of run N, water shortage time M, overload time P, water shortage time threshold H and overload time threshold value J.
S3, real-time current value C is compared with water shortage electric current theoretical value B and overload current D, according to comparison result to electricity
The operating status of machine is determined；
If S4, real-time current value C are less than water shortage electric current theoretical value B, determine motor for exsiccosis；If real-time current value
When C is greater than overload current value D, then motor is determined for overload, motor enters positive-negative rotation state or rotates forward recoil state at this time.
The motor exsiccosis determination method is to get current motor fortune by current transformer and voltage transformer
Capable real-time current value C and real-time voltage value A；
When the motor operation real-time current value C currently obtained is theoretical in the water shortage electric current being less than at real-time voltage value A
Value B, water shortage time M are greater than the water shortage time threshold H of setting, and motor enters water shortage, and motor can be re-introduced into after I minutes
It operates normally, if still water shortage, persistently waits；Such as water shortage time M is greater than the water shortage time threshold H of setting, motor enters
To water shortage, under conditions of no worker monitor, motor can be re-introduced into normal operation after 30 minutes, if still water shortage, holds
It is continuous to wait.
If duration M is less than the water shortage time threshold H of setting, motor continuous service, if occurring in this process
Voltage change, water shortage electric current theoretical value B can be refreshed again, be determined again, so as to reach accurate judgement motor
Exsiccosis.
The judgment method of the motor overload state is that the real-time electricity of current motor operation is got by current transformer
Flow valuve C, real-time current value C are greater than overload current value D, if persistently detection overload time P is greater than the overload time threshold value J of setting
(such as: OverCurrentTMTH), then motor enters positive-negative rotation state, is rotating forward in time E, real-time current value C continues greatly
In overload current value D, then waiting is shut down, restores state into motor overload, after overload recovery time T, motor enters reversion, mistake
It after carrying reversing time F, then rotates forward, continues repeatedly again after waiting time of machine halt T, after being more than setting positive and negative rotation times N, then stop
Machine alarm, does not allow to be again started up；If current transformer detects that real-time current value C is less than overload current rotating forward in time E
Value D is then judged to replying, and motor operates normally.
The present invention is to carry out the initialization of system first when controlling motor for submerged pump, right after the completion of to be initiated
Real-time voltage value A and real-time current value C of the current load at motor for submerged pump both ends are read out, then are carried out in parameter packet
Parameter is loaded into, and real-time current value C is compared with water shortage electric current theoretical value B and overload current value D, according to comparison result
The operating status of motor is determined.If real-time current value C is less than water shortage electric current theoretical value B, determine motor for water shortage shape
State；If real-time current value C is greater than overload current value D, motor is determined for overload, motor enters positive-negative rotation state at this time
Or rotate forward recoil state.
The present invention carries out multiple states of immersible pump using the hardware fit system of current transformer and voltage transformer
Under judgement, overload determining comprising water shortage determine, positive and negative rotation and rotates forward and restores to determine.
After reading current voltage value in the set control system, carry out according to different voltage the assignment of parameter.By
In the use environment of immersible pump or using voltage loss caused by cable, lead to voltage not and be stable value, electric current can be with
The variation of voltage and change, under certain conditions, curent change lower than setting water shortage value, will lead to water shortage can not determine, hold
The case where it is excessively high that continuous operation will lead to motor temperature, burns motor is shared using current transformer and voltage transformer and is solved
Under different voltages, the case where water shortage caused by electric current is different can not determine, solve on the market due to increasing water level sensor
The case where caused frequent motor starting damage is clicked and can not decide that water shortage to low water level, appropriate is high.
A kind of control device exchanging immersible pump, as shown in Fig. 2, including voltage transformer 1, current transformer 2, single-chip microcontroller
3, driving power device 4, warning device 5, immersible pump 6 and external power supply 7；
The voltage transformer 1 is detected for loading the real-time voltage in immersible pump 6 on motor；
The current transformer 2, for being detected to the real-time current by motor in immersible pump 6；
The single-chip microcontroller 3, is connect, for receiving electricity by weak electric signal with current transformer 2 and voltage transformer 1
The real-time current value C for the motor operation that current transformer 2 detects receives the real-time voltage for the motor operation that voltage transformer inspection 1 is surveyed
Value A, and the relevant parameter for being arranged in parameter packet；
By allowing to pass through high current between motor in the external power supply 7, power drive device 4 and immersible pump 6
Cable connection, the power drive device 4 works in immersible pump 6 for controlling；
It is controlled between the single-chip microcontroller 3 and power drive device 4 by weak electric signal, the power drive device
4 receive the control instruction that single-chip microcontroller 3 issues, and the control instruction of single-chip microcontroller 3 controls motor in immersible pump 6 based on the received
System；
The warning device 5, is connected, for alarming with single-chip microcontroller 3.
Claims (7)
1. a kind of intelligent control method for exchanging immersible pump, it is characterised in that: the following steps are included:
S1, acquisition calibration obtains the multiple groups water shortage electric current theoretical value B and overload current value D of motor under normal voltage, and multiple groups lack
Water power stream theoretical value B group is shaped to inquiry table；
S2, real-time voltage of the load on motor is acquired, obtains real-time voltage value A, obtains reality by looking into fast inquiry table
When voltage value A under water shortage electric current theoretical value B, and acquisition is acquired to motor operation real-time current value C；
S3, real-time current value C is compared with water shortage electric current theoretical value B and overload current value D, according to comparison result to motor
Operating status determined；
If S4, real-time current value C are less than water shortage electric current theoretical value B, determine motor for exsiccosis；If real-time current value C is big
When overload current value D, then motor is determined for overload, motor enters positive-negative rotation state or rotates forward recoil state at this time.
2. the intelligent control method of exchange immersible pump according to claim 1, it is characterised in that: described on motor
The method of real-time voltage acquisition is, by voltage transformer come to load, real-time voltage is acquired on motor, and will acquisition
Single-chip microcontroller is fed back to real-time voltage value A.
3. the intelligent control method of exchange immersible pump according to claim 2, it is characterised in that: described on motor
The method of real-time current acquisition is to be acquired by current transformer to the real-time current of motor, and by collected reality
When current value C feed back to single-chip microcontroller.
4. the intelligent control method of exchange immersible pump according to claim 3, it is characterised in that: be arranged in the single-chip microcontroller
There is parameter packet, include in parameter packet: real-time voltage value A, water shortage electric current theoretical value B, motor operation real-time current value C, overload electricity
Flow valuve D, overload rotate forward time E, overload recovery time T, and overloading reversing time F and positive and negative rotation allows number of run N, when water shortage
Between M, overload time P, water shortage time threshold H and overload time threshold value J.
5. the intelligent control method of exchange immersible pump according to claim 4, it is characterised in that: the motor exsiccosis
Determination method is that the real-time current value C and real-time electricity of current motor operation are got by current transformer and voltage transformer
Pressure value A；
When the motor operation real-time current value C currently obtained is being less than water shortage electric current theoretical value B at real-time voltage value A,
Water shortage time M is greater than the water shortage time threshold H of setting, and motor enters water shortage, and motor can be re-introduced into normally after I minutes
Operation, if still water shortage, persistently waits；
If duration M is less than the water shortage time threshold H of setting, motor continuous service, if voltage occurs in this process
Variation, water shortage electric current theoretical value B can be refreshed again, be determined again, and the accurate exsiccosis for determining motor is reached.
6. the intelligent control method of exchange immersible pump according to claim 4, it is characterised in that: the motor overload state
Judgment method be the real-time current value C of current motor operation to be got by current transformer, real-time current value C was greater than
Set current value D, if persistently detection overload time P is greater than the overload time threshold value J of setting, motor enters positive-negative rotation state,
It rotating forward in time E, real-time current value C is persistently greater than overload current value D, then shuts down waiting, restore state into motor overload,
After overload recovery time T, motor enters reversion, after overloading reversing time F, then rotates forward, continues more again after waiting time of machine halt T
Secondary, after being more than setting positive and negative rotation times N, then stopping alarm, does not allow to be again started up；If rotating forward in time E, Current Mutual Inductance
Device detects that real-time current value C is less than overload current value D, then is judged to replying, and motor operates normally.
7. the control device of exchange immersible pump according to claim 1-6, including voltage transformer (1), electric current
Mutual inductor (2), single-chip microcontroller (3), driving power device (4), warning device (5), immersible pump (6) and external power supply (7)；Its feature
It is:
The voltage transformer (1) is detected for loading the real-time voltage in immersible pump (6) on motor；
The current transformer (2), for being detected to the real-time current by motor in immersible pump (6)；
The single-chip microcontroller (3) is connect, for receiving by weak electric signal with current transformer (2) and voltage transformer (1)
The real-time current value C of the motor operation of current transformer (2) detection, receives the reality for the motor operation that voltage transformer inspection (1) is surveyed
When voltage value A, and the relevant parameter for being arranged in parameter packet；
By allowing through big electricity between motor in the external power supply (7), power drive device (4) and immersible pump (6)
The cable of stream connects, and the power drive device (4) is for controlling work in immersible pump (6)；
It is controlled between the single-chip microcontroller (3) and power drive device (4) by weak electric signal, the power drive device
(4) receive the control instruction that single-chip microcontroller (3) issue, and based on the received the control instruction of single-chip microcontroller (3) to electric in immersible pump (6)
Machine is controlled；
The warning device (5), is connected, for alarming with single-chip microcontroller (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910497238.2A CN110165964B (en) | 2019-06-10 | 2019-06-10 | Intelligent control method and control device for alternating-current submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910497238.2A CN110165964B (en) | 2019-06-10 | 2019-06-10 | Intelligent control method and control device for alternating-current submersible pump |
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| CN110165964A true CN110165964A (en) | 2019-08-23 |
| CN110165964B CN110165964B (en) | 2020-09-04 |
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| CN110943435A (en) * | 2019-12-31 | 2020-03-31 | 贵州航天凯山石油仪器有限公司 | Motor output control method for underground direct-reading measuring and adjusting instrument |
| CN111779683A (en) * | 2020-08-08 | 2020-10-16 | 上海新时达电气股份有限公司 | Deep well pump control method and driving device thereof |
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| CN113890458B (en) * | 2021-09-29 | 2023-07-04 | 广东万和热能科技有限公司 | Motor control method, control circuit, device and gas water heater of water pump |
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| CN114593073B (en) * | 2022-03-31 | 2023-09-22 | 苏州优德通力科技有限公司 | Constant-pressure deep well pump system and control method thereof |
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