CN102912824A - Constant pressure liquid supplying control system - Google Patents
Constant pressure liquid supplying control system Download PDFInfo
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- CN102912824A CN102912824A CN 201210420181 CN201210420181A CN102912824A CN 102912824 A CN102912824 A CN 102912824A CN 201210420181 CN201210420181 CN 201210420181 CN 201210420181 A CN201210420181 A CN 201210420181A CN 102912824 A CN102912824 A CN 102912824A
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- control system
- constant pressure
- constant
- liquid supplying
- pressure liquid
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- Control Of Positive-Displacement Pumps (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention provides a constant pressure liquid supplying control system, and aims to provide a liquid configuration device. The constant pressure liquid supplying control system is characterized by comprising a frequency conversion cabinet, a pressure sensor, a liquid level sensor and a liquid pump unit. The constant pressure liquid supplying control system can adjust the liquid supplying amount in a stepless manner, achieves no loss in adjustment, saves 20 to 46 percent of electricity, and saves 10 to 20 percent of water. The constant pressure liquid supplying control system achieves stable working performance, can realize frequency conversion soft start, has no impact current, eliminates a liquid hammer effect of the system, and keeps the pressure of a pipe network to be constant.
Description
Technical field
The present invention aims to provide a kind of liquid inking device.
Background technology
That constant pressure water supply system has is energy-conservation, reliably reach unattended advantage, therefore obtains a wide range of applications in water system.Domestic research for constant pressure water supply is a lot, and research adopts PLC and frequency converter serial communication to consist of constant pressure water supply system such as document " based on the constant pressure water supply system of PLC and frequency converter serial communication "; Document " based on the Full-automatic variable-frequency constant pressure water supply system of PLC control " adopts programmable controller PLC and frequency conversion speed-adjusting, develops the fully-automatic constant pressure water system; Document " intelligent frequency-conversion Design of Constant Pressure Water Supplying and realization " is based on PLC, frequency converter and computer technology, and design is resided in the BP Control Strategy with Neural Network among the variable frequency control, realizes the online adjustment of pid parameter.
Summary of the invention
The present invention aims to provide a kind of easy to operate, reliable constant-pressure liquid supply control system.
A kind of constant-pressure liquid supply control system of the present invention is characterized in that by frequency conversion tank, pressure sensor, and liquid level sensor and liquor pump unit form.
Preferably, be provided with efficient mute type frequency converter, programmable logic controller and ECU in the frequency conversion tank.
More preferably, liquid level sensor is electrically connected with programmable logic controller, and pressure sensor is electrically connected with efficient mute type frequency converter, in the liquor pump unit each liquor pump respectively with efficient mute type frequency converter, ECU electrical connection.
Liquid supply step-less adjustment of the present invention, and regulate lossless, the economize on electricity 20-46%, the water saving 10-20%.Its stable work in work can realize frequency conversion soft start, and non-impact current is eliminated system liquid hammer effect, keeps the pipe network constant pressure.
Description of drawings
Fig. 1 is the FB(flow block) of embodiment one.
The specific embodiment
Embodiment one.
A kind of constant-pressure liquid supply control system of the present invention, by frequency conversion tank, pressure sensor, liquid level sensor and liquor pump unit form.Wherein be provided with efficient mute type frequency converter, programmable logic controller and ECU in the frequency conversion tank.The liquor pump unit is comprised of 7 liquor pumps.In native system, liquid level sensor is electrically connected with programmable logic controller, and pressure sensor is electrically connected with efficient mute type frequency converter, in the liquor pump unit each liquor pump respectively with efficient mute type frequency converter, ECU electrical connection.
After system power-up, start a liquor pump converting operation, start a liquor pump converting operation, pressure sensor feeds back to the hydraulic pressure signal in the Liquid tube net in the programmable logic controller, programmable logic controller compares the hydraulic pressure of this signal and user preset, control efficient mute type frequency converter and regulate the rotating speed of liquor pump, keep pipe network hydraulic pressure on default hydraulic pressure, when a liquor pump operating frequency reaches highest frequency, when if pipe network hydraulic pressure does not still reach default hydraulic pressure, then this pump is switched to power frequency operation, efficient mute type frequency converter is second liquor pump control of starting and converting operation thereof automatically, after this, does not still reach requirement such as pressure, then successively with the 3rd, the 4th liquor pump switches to power frequency until preset pressure by frequency conversion, otherwise if pipe network water pressure during greater than default hydraulic pressure, controller can make efficient mute type frequency converter frequency reduce, can automatically cut away a power frequency liquor pump when frequency is lower than lower system in limited time, make all the time pipe network hydraulic pressure keep constant.
Claims (3)
1. a constant-pressure liquid supply control system is characterized in that by frequency conversion tank, pressure sensor, and liquid level sensor and liquor pump unit form.
2. constant-pressure liquid supply control system as claimed in claim 1 is characterized in that being provided with in the frequency conversion tank efficient mute type frequency converter, programmable logic controller and ECU.
3. constant-pressure liquid supply control system as claimed in claim 2, it is characterized in that liquid level sensor is electrically connected with programmable logic controller, pressure sensor is electrically connected with efficient mute type frequency converter, in the liquor pump unit each liquor pump respectively with efficient mute type frequency converter, ECU electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210420181 CN102912824A (en) | 2012-10-29 | 2012-10-29 | Constant pressure liquid supplying control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210420181 CN102912824A (en) | 2012-10-29 | 2012-10-29 | Constant pressure liquid supplying control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102912824A true CN102912824A (en) | 2013-02-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210420181 Pending CN102912824A (en) | 2012-10-29 | 2012-10-29 | Constant pressure liquid supplying control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102912824A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112783224A (en) * | 2020-12-30 | 2021-05-11 | 中国长江电力股份有限公司 | Pressure maintaining system adopting variable-frequency pressure maintaining equipment and self-adaptive control method |
-
2012
- 2012-10-29 CN CN 201210420181 patent/CN102912824A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112783224A (en) * | 2020-12-30 | 2021-05-11 | 中国长江电力股份有限公司 | Pressure maintaining system adopting variable-frequency pressure maintaining equipment and self-adaptive control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130206 |