CN110345085A - It is a kind of applied to without sensing shielding pump discharge lift control method - Google Patents
It is a kind of applied to without sensing shielding pump discharge lift control method Download PDFInfo
- Publication number
- CN110345085A CN110345085A CN201910588900.5A CN201910588900A CN110345085A CN 110345085 A CN110345085 A CN 110345085A CN 201910588900 A CN201910588900 A CN 201910588900A CN 110345085 A CN110345085 A CN 110345085A
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- Prior art keywords
- canned motor
- motor pump
- mode
- running speed
- speed
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
-
- 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
-
- 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
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of applied to the control method without sensing shielding pump discharge lift, belongs to shielding pump technical field.It include canned motor pump and with the host computer MCU that connect of shielding pump signal, canned motor pump is run according to setting speed, canned motor pump calculates mode revolving speed corresponding to phase current according to the phase current size under present mode of operation, and is compared the mode revolving speed running speed current with canned motor pump by host computer MCU；If mode revolving speed is greater than running speed, the current running speed of canned motor pump increases；If mode revolving speed is less than running speed, the current running speed of canned motor pump is reduced.The present invention is not necessarily to additional installation flowmeter and pressure sensor, i.e., analog calculates pressure flow state, and lift control precision is high, while dynamic response is fast, and canned motor pump can adjust revolving speed in real time, and flow and pressure value are quickly controlled to the size to setting.
Description
Technical field
The present invention relates to a kind of applied to the control method without sensing shielding pump discharge lift, belongs to canned motor pump technology neck
Domain.
Background technique
Canned motor pump connects together pump and motor, and the rotor of motor and the impeller of pump are fixed on same axis, utilizes
Housing separates the rotor of motor and stator, and rotor operates in transported medium, and power is transmitted to by stator field
Rotor application is in heating system, such as floor heating wall-hung boiler, air-conditioner set pump, running-water booster pump etc..Universal shield pump, operational mode
Formula is single, the Combination conversion of a variety of fixed rotating speeds is generally used, to meet different hydraulic demands, but in actual use
Flow demand can change, and cause water pressure fluctuations during water flow changes in demand excessive, such as when flow demand is big,
Hydraulic pressure sharply declines, and when flow demand is small, hydraulic pressure is just increased, and to solve this problem, the invention proposes a kind of applications
In the control method without sensing shielding pump discharge lift.
Summary of the invention
Technical problem to be solved by the present invention lies in: it provides a kind of applied to the control without sensing shielding pump discharge lift
Method, it solves the problems, such as that universal shield pump cannot adjust water pressure according to actual use situation.
The technical problems to be solved by the invention take following technical scheme to realize:
It is a kind of applied to without sensing shielding pump discharge lift control method, including canned motor pump and with shielding pump signal connect it is upper
Position machine MCU, the canned motor pump are run according to setting speed, and the canned motor pump is according to the big subtotal of phase current under present mode of operation
Mode revolving speed corresponding to phase current is calculated, and is turned the mode revolving speed and the current operation of canned motor pump by host computer MCU
Speed compares；
If mode revolving speed is greater than running speed, the current running speed of canned motor pump increases；
If mode revolving speed is less than running speed, the current running speed of canned motor pump is reduced.
As preferred embodiment, the operational mode includes ratio control model and Isobarically Control mode.
As preferred embodiment, the canned motor pump is additionally provided with manual gear pattern.
As preferred embodiment, the amplitude that the current running speed of canned motor pump increases or decreases is until with the mode revolving speed
Until identical.
As preferred embodiment, phase current and corresponding modes revolving speed under each operational mode are stored in the host computer MCU
Corresponding relationship, the host computer MCU are adjusted according to whether the current running speed of the canned motor pump measured matches with the corresponding relationship
Save the running speed of canned motor pump.
As preferred embodiment, the control method the following steps are included:
S1, canned motor pump power on, and set operational mode, execute step S2；
S2, judge whether setting mode is ratio control model and Isobarically Control mode, if not both modes, canned motor pump is then
It is run with fixed rotating speed, otherwise executes step S3；
S3, the phase current and running speed for obtaining current canned motor pump motor operation execute step S4；
S4, judge whether calculated mode revolving speed is greater than the current running speed of canned motor pump under current phase current, if more than holding
Row step S5, on the contrary execute step S6；
S5, running speed increase, and execute step S2；
S6, running speed are reduced, and execute step S2.
The beneficial effects of the present invention are:
1, the present invention can be simulated directly by the phase current size of canned motor pump without additional installation flowmeter and pressure sensor
Current pressure flow state is calculated, and lift control precision can reach within 2Kpa.
2, host computer MCU has memory function to the present invention in automatic mode, can store daily user's habit, simultaneously
Every 24 hours adaptive adjustment operating flux pressure curves.
3, dynamic response of the invention is fast, and during changes in flow rate, canned motor pump can adjust revolving speed in real time, quickly will stream
Amount and pressure value control the size to setting.
Detailed description of the invention
Fig. 1 is the control method flow chart proposed by the present invention for being applied to shield pump discharge lift without sensing.
Specific embodiment
In order to be easy to understand to technical means, creative features, achievable purpose and effectiveness of the invention, below with reference to tool
Body diagram, the present invention is further explained.
As shown in Figure 1, it is a kind of applied to without sensing shielding pump discharge lift control method, including canned motor pump and with shielding
The host computer MCU of pump signal connection, canned motor pump are run according to setting speed, and canned motor pump is according to the phase current under present mode of operation
Size calculates mode revolving speed corresponding to phase current, and passes through host computer MCU for mode revolving speed and the current operation of canned motor pump
Revolving speed compares；
If mode revolving speed is greater than running speed, the current running speed of canned motor pump increases；
If mode revolving speed is less than running speed, the current running speed of canned motor pump is reduced.
Using the above scheme, when electrical power rotates, different revolving speeds has the corresponding phase current of size and generates, upper
Machine MCU calculates the mode revolving speed to match with phase current size, and the running speed current with canned motor pump compares, then
The running speed of canned motor pump, rapid dynamic response speed are automatically adjusted according to difference, and flowmeter and pressure are installed without additional
Sensor can obtain current pressure flow state, greatly reduce complete machine cost.
Operational mode includes ratio control model and Isobarically Control mode.
Using the above scheme, ratio control model (being abbreviated as PP) is hydraulic pressure in uninterrupted variation ratio control, constant pressure
Control model (being abbreviated as CP) is the control of water pressure invariableness size, in ratio control model or the mistake of Isobarically Control mode automatic running
Cheng Zhong can reduce shielding revolution speed when flow demand is few automatically, and hydraulic pressure can also be adjusted to preset solid in setting mode
Determine hydraulic pressure, to play the role of adjusting hydraulic pressure on demand, and can achieve the effect that energy-saving and emission-reduction, in the feelings of not flow demand
Power consumption is preferably minimized under condition.
Canned motor pump is additionally provided with manual gear pattern.
Using the above scheme, other than operational mode, user can also be manually entered fixed rotating speed S1, and canned motor pump is according to setting
Fixed fixed rotating speed S1 rotation.
The amplitude that the current running speed of canned motor pump increases or decreases is until identical as mode revolving speed.
Using the above scheme, current running speed is finally adjusted to consistent with the mode revolving speed of setting, so that canned motor pump
Flow pressure state trend is in setting value, so as to accurately control lift.
The corresponding relationship of phase current and corresponding modes revolving speed under each operational mode, host computer MCU are stored in host computer MCU
The running speed of canned motor pump whether is adjusted with corresponding relationship matching according to the current running speed of the canned motor pump measured.
Using the above scheme, corresponding relationship is summed up in many experiments by inventor, can be expressed as mathematical formulae: f
(X)=p1*X2+ p2*X+p3, wherein f(X) it is running speed S0, X is phase current I0, and p1, p2 and p3 are coefficient, are being measured
When the size of phase current, corresponding canned motor pump running speed S0 can be obtained rapidly by the formula, replace P1, P2, P3's
Value, can calculate the corresponding relationship under different operational modes.
Control method the following steps are included:
S1, canned motor pump power on, and set operational mode, execute step S2；
S2, judge whether setting mode is ratio control model (PP) and Isobarically Control mode (CP), if not both modes,
Canned motor pump executes step S3 then with fixed rotating speed S1 operation；
S3, the phase current I0 and running speed S0 for obtaining current canned motor pump motor operation execute step S4；
S4, judge whether calculated mode revolving speed S2 is greater than the current running speed S0 of canned motor pump under current phase current I0, if
It is greater than, executes step S5, otherwise execute step S6；
S5, running speed increase n0, execute step S2；
S6, running speed reduce n0, execute step S2.
N0 is the difference of mode revolving speed S2 and running speed S0.
Working principle: user when in use, sets the operational mode of canned motor pump, while canned motor pump is according to setting speed first
It is initially powered up operation, in the rotor rotation process of canned motor pump, host computer MCU persistently obtains phase current size, and according to correspondence
Relationship calculates mode revolving speed corresponding to phase current, host computer MCU by mode revolving speed and the current running speed of canned motor pump into
Then row comparison automatically adjusts the running speed of canned motor pump, rapid dynamic response speed, and lift according to difference and controls precision energy
Reach within 2Kpa.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, without departing from the spirit and scope of the present invention, this hair
Bright to will also have various changes and improvements, these changes and improvements all fall within the protetion scope of the claimed invention.The present invention claims
Protection scope is defined by the appending claims and its equivalent thereof.
Claims (6)
1. it is a kind of applied to the control method without sensing shielding pump discharge lift, it is connect including canned motor pump and with shielding pump signal
Host computer MCU, it is characterised in that: the canned motor pump is run according to setting speed, and the canned motor pump is according under present mode of operation
Phase current size calculate mode revolving speed corresponding to phase current, and by host computer MCU by the mode revolving speed and shielding
Current running speed is pumped to compare；
If mode revolving speed is greater than running speed, the current running speed of canned motor pump increases；
If mode revolving speed is less than running speed, the current running speed of canned motor pump is reduced.
2. according to claim 1 a kind of applied to the control method without sensing shielding pump discharge lift, it is characterised in that:
The operational mode includes ratio control model and Isobarically Control mode.
3. according to claim 1 a kind of applied to the control method without sensing shielding pump discharge lift, it is characterised in that:
The canned motor pump is additionally provided with manual gear pattern.
4. according to claim 1 a kind of applied to the control method without sensing shielding pump discharge lift, it is characterised in that:
The amplitude that the current running speed of canned motor pump increases or decreases is until identical as the mode revolving speed.
5. according to claim 1 a kind of applied to the control method without sensing shielding pump discharge lift, it is characterised in that:
The corresponding relationship of phase current and corresponding modes revolving speed under each operational mode, the host computer MCU are stored in the host computer MCU
The running speed of canned motor pump is adjusted according to whether the current running speed of the canned motor pump measured matches with the corresponding relationship.
6. -5 is any described a kind of applied to the weighing method without sensing shielding pump discharge lift according to claim 1, special
Sign is: the following steps are included:
S1, canned motor pump power on, and set operational mode, execute step S2；
S2, judge whether setting mode is ratio control model and Isobarically Control mode, if not both modes, canned motor pump is then
It is run with fixed rotating speed, otherwise executes step S3；
S3, the phase current and running speed for obtaining current canned motor pump motor operation execute step S4；
S4, judge whether calculated mode revolving speed is greater than the current running speed of canned motor pump under current phase current, if more than holding
Row step S5, on the contrary execute step S6；
S5, running speed increase, and execute step S2；
S6, running speed are reduced, and execute step S2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910588900.5A CN110345085A (en) | 2019-07-02 | 2019-07-02 | It is a kind of applied to without sensing shielding pump discharge lift control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910588900.5A CN110345085A (en) | 2019-07-02 | 2019-07-02 | It is a kind of applied to without sensing shielding pump discharge lift control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110345085A true CN110345085A (en) | 2019-10-18 |
Family
ID=68178012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910588900.5A Pending CN110345085A (en) | 2019-07-02 | 2019-07-02 | It is a kind of applied to without sensing shielding pump discharge lift control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110345085A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1374752A (en) * | 2001-03-02 | 2002-10-16 | 松下电器产业株式会社 | Motor control device |
| CN101086232A (en) * | 2007-07-09 | 2007-12-12 | 三一重工股份有限公司 | Concrete transfer pump energy-saving control method |
| CN102812247A (en) * | 2010-01-11 | 2012-12-05 | 英瑞杰汽车***研究公司 | Method for regulating a pump of an scr system |
| CN103501153A (en) * | 2013-10-21 | 2014-01-08 | 佛山市美传科技有限公司 | Intelligent speed-regulating system for three-phase alternating-current asynchronous motor |
| CN105490462A (en) * | 2015-12-23 | 2016-04-13 | 卧龙电气集团股份有限公司 | Intelligently controlled integrated variable frequency motor system |
| CN107906022A (en) * | 2017-10-18 | 2018-04-13 | 江苏大学 | A kind of online energy consumption testing analysis method of water pump based on wireless sensor network |
| CN108233786A (en) * | 2016-12-14 | 2018-06-29 | 现代自动车株式会社 | The brshless DC motor drive control method and system of electric water pump |
-
2019
- 2019-07-02 CN CN201910588900.5A patent/CN110345085A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1374752A (en) * | 2001-03-02 | 2002-10-16 | 松下电器产业株式会社 | Motor control device |
| CN101086232A (en) * | 2007-07-09 | 2007-12-12 | 三一重工股份有限公司 | Concrete transfer pump energy-saving control method |
| CN102812247A (en) * | 2010-01-11 | 2012-12-05 | 英瑞杰汽车***研究公司 | Method for regulating a pump of an scr system |
| CN103501153A (en) * | 2013-10-21 | 2014-01-08 | 佛山市美传科技有限公司 | Intelligent speed-regulating system for three-phase alternating-current asynchronous motor |
| CN105490462A (en) * | 2015-12-23 | 2016-04-13 | 卧龙电气集团股份有限公司 | Intelligently controlled integrated variable frequency motor system |
| CN108233786A (en) * | 2016-12-14 | 2018-06-29 | 现代自动车株式会社 | The brshless DC motor drive control method and system of electric water pump |
| CN107906022A (en) * | 2017-10-18 | 2018-04-13 | 江苏大学 | A kind of online energy consumption testing analysis method of water pump based on wireless sensor network |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20191018 |