CN114893418A - Non-sensitive water level monitoring method for sewage pump - Google Patents
Non-sensitive water level monitoring method for sewage pump Download PDFInfo
- Publication number
- CN114893418A CN114893418A CN202210560838.0A CN202210560838A CN114893418A CN 114893418 A CN114893418 A CN 114893418A CN 202210560838 A CN202210560838 A CN 202210560838A CN 114893418 A CN114893418 A CN 114893418A
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- CN
- China
- Prior art keywords
- sewage pump
- sewage
- motor
- variable frequency
- frequency controller
- Prior art date
- 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.)
- Pending
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000012544 monitoring process Methods 0.000 title claims abstract description 14
- 230000003247 decreasing effect Effects 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 abstract description 7
- 238000000605 extraction Methods 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
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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
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
-
- 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
- F04D15/0088—Testing machines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Abstract
The invention discloses a method for monitoring the non-sensitive water level of a sewage pump, which comprises the following steps: s1, installing the sewage pump with the variable frequency controller in a sewage pool; s2, controlling the motor of the sewage pump to rotate at a low constant speed by the variable frequency controller; s3, the variable frequency controller monitors the output load change of the motor of the sewage pump, when the output load of the motor rotating at the low constant speed is gradually increased to be stable, the variable frequency controller controls the sewage pump to run at full speed, and when the output load of the motor of the sewage pump is gradually decreased to be stable, the variable frequency controller controls the sewage pump to rotate at the low constant speed. Through letting the sewage pump keep low constant speed rotation, prevent that the sewage pump scale deposit and the solid impurity in the sewage from piling up and leading to the sewage pump card to die, utilize sewage to soak the sewage pump impeller and lead to the output power increase of sewage pump for triggering the extraction sewage signal to replace level sensor, sewage pump material itself can resistant dirty water corrosion, retrench level sensor, and is with low costs, and the reliability is high.
Description
Technical Field
The invention relates to the field of sewage extraction, in particular to a method for monitoring a non-sensitive water level of a sewage pump.
Background
The sewage pump belongs to one of centrifugal impurity pumps, and has various forms: such as a submersible sewage pump and a dry sewage pump, the most common submersible sewage pump is a QW type submersible sewage pump, the most common dry sewage pump is a W type horizontal sewage pump and a WL type vertical sewage pump, the submersible sewage pump is mainly used for conveying media containing solid particles such as fibers, paper scraps and the like in municipal sewage, excrement or liquid, and the temperature of the conveyed media is usually not more than 80 ℃. General sewage is collected in the effluent water sump in advance, and the appointed place is mentioned to rethread sewage pump pumping, and sewage injection speed is very fast, generally through setting up level sensor, triggers level sensor when the sewage liquid level in the effluent water sump, then starts the sewage pump and extracts sewage, guarantees to carry sewage in time, avoids sewage to spill over the effluent water sump. Because the components of the sewage are complex, the sewage pump non-sensitive water level monitoring method adopting the liquid level sensor completely depends on the liquid level sensor, has higher requirement on the reliability of the liquid level sensor and higher cost; the sewage pump needs to trigger the liquid level sensor at the sewage liquid level to start working, and before the sewage pump stops working, solid impurities in sewage settle or scale generated by a static sewage pump easily causes the sewage pump to be clamped, so that a sewage pump non-sensing water level monitoring method which is low in cost and difficult to clamp by the sewage pump is urgently needed.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a sewage pump non-sensitive water level monitoring method which is low in cost and not easy to clamp a sewage pump.
The purpose of the invention is realized by adopting the following technical scheme:
a sewage pump non-sensitive water level monitoring method comprises the following steps:
s1, installing the sewage pump with the variable frequency controller in a sewage pool;
s2, controlling the motor of the sewage pump to rotate at a low constant speed by the variable frequency controller;
s3, the variable frequency controller monitors the output load change of the motor of the sewage pump, when the output load of the motor rotating at a low constant speed is gradually increased to be stable, the variable frequency controller controls the sewage pump to run at the highest constant rotating speed, and when the output load of the motor of the sewage pump is gradually decreased to be stable, the variable frequency controller controls the sewage pump to rotate at the low constant speed.
Preferably, in the rotation process of the sewage pump, when the variable frequency controller monitors that the output load of the motor suddenly changes, the variable frequency controller controls the motor to rotate forward and backward alternately.
In order to prevent the solid particles from causing the jamming of the rotating shaft in the working process of the sewage pump, when the sewage pump is jammed, the current and the power are increased steeply, the rotating speed is decreased suddenly, the blocked solid particles are loosened by controlling the positive and negative rotation alternation of the motor, and after the jamming is relieved, the motor continues to rotate according to the working parameters before the jamming.
Preferably, the variable frequency controller monitors the parameters of the output load of the motor as output power and rotation speed.
In order to monitor the working environment of the sewage pump in time, the working state change of the motor can be reflected in time by monitoring the output power and the special rotating speed of the motor, the adjustment is carried out quickly, the process that the liquid level sensor receives and transmits signals to the variable frequency controller is saved, and the reaction is rapid.
Preferably, the system further comprises a remote control module which is in communication connection with the variable frequency controller.
Preferably, the remote control module is a mobile phone applet or computer software.
In order to facilitate control, the working state of the sewage pump can be monitored and controlled through a mobile phone small program or software.
Preferably, when the frequency conversion controller monitors that the rotating speed of the motor is 0, the motor is forcibly started to rotate.
In order to facilitate maintenance, when the sewage pump is blocked or can not normally rotate, the motor is forced to rotate to discharge sewage in the pump, so that the maintenance is convenient.
Compared with the prior art, the invention has the beneficial effects that:
through letting the sewage pump keep low constant speed rotation, prevent that the sewage pump scale deposit and the solid impurity in the sewage from piling up and leading to the sewage pump card to die, utilize sewage to soak the sewage pump impeller and lead to the output power increase of sewage pump for triggering the extraction sewage signal to replace level sensor, sewage pump material itself can resistant dirty water corrosion, retrench level sensor, and is with low costs, and the reliability is high.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, belong to the protection scope of the present invention.
The purpose of the invention provided by the specific embodiment is realized by adopting the following technical scheme:
a sewage pump non-sensitive water level monitoring method comprises the following steps:
s1, installing the sewage pump with the variable frequency controller in a sewage pool;
s2, controlling a motor of the sewage pump to rotate at a rotating speed of 50r/min by the variable frequency controller;
s3, monitoring the power change of the sewage pump by the variable frequency controller, when sewage in the sewage pool begins to soak until the impeller of the motor is immersed, and the load output by the motor gradually increases to be stable in the process, specifically, the output power of the motor gradually increases and then is stabilized at a certain value, controlling the sewage pump to rotate at a rotating speed of 2000 r/min by the variable frequency controller, discharging the water in the sewage pool out of the sewage pool until the output power of the motor of the sewage pump gradually decreases and then is stabilized at a certain value, pumping the water in the sewage pool until the sewage level is lower than the impeller of the sewage pump, and controlling the sewage pump to continue to rotate at a rotating speed of 50r/min by the variable frequency controller.
The above rotating speed is only an example and is limited to the rotating speed, and the selection of the rotating speed needs to comprehensively consider the sewage conveying capacity of the sewage pool and the structure of the sewage pump, because the improvement of the concept of the invention is not involved, the details are not described herein.
The sewage extraction signal is triggered by the change of the output power of the motor of the sewage pump, thereby replacing the liquid level monitoring function of the water level sensor.
In order to prevent the sewage from being extracted, the variable frequency controller monitors that the output power of the motor is increased suddenly or the rotating speed of the motor is reduced suddenly in the rotating process of the sewage pump, the variable frequency controller controls the motor to rotate forward and backward alternately to loosen the clamped solid particles, for example, the motor rotates forwards at 2000 r/min for 5s and then rotates reversely at 2000 r/min for 5 s.
In order to facilitate remote monitoring, the system also comprises a remote control module which is in communication connection with the variable frequency controller. The remote control module is a mobile phone applet or computer software. For example, the start and stop of the sewage pump are controlled through a small mobile phone program, the running state of the sewage pump is checked, the equipment parameters of the sewage pump are set, and the alarm signal of the sewage pump is received.
And when the frequency conversion controller monitors that the rotating speed of the motor is 0, the motor is forcibly started to rotate. When the sewage pump is blocked, the sewage pump is forcibly operated by controlling the large torque of the motor to discharge the sewage in the pump, so that the later maintenance is facilitated, and the sewage is prevented from being reserved in the pump body for a long time to nourish bacteria.
The above embodiments are only some of the preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (6)
1. A sewage pump non-sensitive water level monitoring method is characterized by comprising the following steps:
s1, installing the sewage pump with the variable frequency controller in a sewage pool;
s2, controlling the sewage pump motor to rotate at a low constant speed by the variable frequency controller;
and S3, the variable frequency controller monitors the change of the output load of the motor of the sewage pump, when the output load of the motor rotating at a low constant speed is gradually increased and then is stable, the variable frequency controller controls the sewage pump to run at the highest constant rotating speed, and when the output load of the motor of the sewage pump is gradually decreased and becomes stable, the variable frequency controller controls the sewage pump to rotate at a low constant speed.
2. The method as claimed in claim 1, wherein the inverter controller controls the motor to rotate in opposite directions when the inverter controller monitors sudden changes in output load of the motor during rotation of the sewage pump.
3. The method of claim 1, wherein the variable frequency controller monitors the output load of the motor as output power and speed.
4. The method as claimed in claim 1, further comprising a remote control module communicatively connected to the inverter controller.
5. The method as claimed in claim 4, wherein the remote control module is a mobile phone applet or a computer software.
6. The method as claimed in claim 3, wherein the inverter controller monitors the rotation speed of the motor to be 0, and forcibly starts the motor to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210560838.0A CN114893418A (en) | 2022-05-23 | 2022-05-23 | Non-sensitive water level monitoring method for sewage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210560838.0A CN114893418A (en) | 2022-05-23 | 2022-05-23 | Non-sensitive water level monitoring method for sewage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114893418A true CN114893418A (en) | 2022-08-12 |
Family
ID=82724038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210560838.0A Pending CN114893418A (en) | 2022-05-23 | 2022-05-23 | Non-sensitive water level monitoring method for sewage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114893418A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110052414A1 (en) * | 2009-09-02 | 2011-03-03 | Keener Robert M | Apparatus for Controlling a Pump |
| CN205991009U (en) * | 2016-08-31 | 2017-03-01 | 卧龙电气集团股份有限公司 | The pump group constant pressure water supply control system of no pressure sensor |
| JP2018145609A (en) * | 2017-03-01 | 2018-09-20 | 株式会社荏原製作所 | Sewage drain equipment |
| CN208123085U (en) * | 2018-01-20 | 2018-11-20 | 南京拜思特环保设备有限公司 | A kind of controlled system with self-regulation for preventing sewage pump from overloading |
| CN210371225U (en) * | 2019-07-31 | 2020-04-21 | 台州丰茜电器有限公司 | Three-phase sewage pump controller circuit |
| CN112065734A (en) * | 2020-09-16 | 2020-12-11 | 长沙迪沃机械科技有限公司 | Flow control method of sewage pump |
-
2022
- 2022-05-23 CN CN202210560838.0A patent/CN114893418A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110052414A1 (en) * | 2009-09-02 | 2011-03-03 | Keener Robert M | Apparatus for Controlling a Pump |
| CN205991009U (en) * | 2016-08-31 | 2017-03-01 | 卧龙电气集团股份有限公司 | The pump group constant pressure water supply control system of no pressure sensor |
| JP2018145609A (en) * | 2017-03-01 | 2018-09-20 | 株式会社荏原製作所 | Sewage drain equipment |
| CN208123085U (en) * | 2018-01-20 | 2018-11-20 | 南京拜思特环保设备有限公司 | A kind of controlled system with self-regulation for preventing sewage pump from overloading |
| CN210371225U (en) * | 2019-07-31 | 2020-04-21 | 台州丰茜电器有限公司 | Three-phase sewage pump controller circuit |
| CN112065734A (en) * | 2020-09-16 | 2020-12-11 | 长沙迪沃机械科技有限公司 | Flow control method of sewage pump |
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