CN202530507U - Programmable logic controller (PLC)-based frequency conversion constant pressure water supply system - Google Patents
Programmable logic controller (PLC)-based frequency conversion constant pressure water supply system Download PDFInfo
- Publication number
- CN202530507U CN202530507U CN2012202114516U CN201220211451U CN202530507U CN 202530507 U CN202530507 U CN 202530507U CN 2012202114516 U CN2012202114516 U CN 2012202114516U CN 201220211451 U CN201220211451 U CN 201220211451U CN 202530507 U CN202530507 U CN 202530507U
- Authority
- CN
- China
- Prior art keywords
- water
- operated valve
- motor operated
- control processor
- valve
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
本实用新型公开了基于PLC的变频恒压供水系统，包括控制处理器PLC、以及与控制处理器PLC连接的蓄水系统和水泵机组、以及变频器；所述水泵机组还与变频器。本实用新型的优点在于：可解决变频恒压供水，达到节能环保的目的。
The utility model discloses a PLC-based frequency conversion constant pressure water supply system, comprising a control processor PLC, a water storage system connected to the control processor PLC, a water pump unit, and a frequency converter; the water pump unit is also connected with the frequency converter. The utility model has the advantages that it can solve the frequency conversion and constant pressure water supply, and achieve the purpose of energy saving and environmental protection.
Description
Technical field
The utility model relates to water system, specifically is meant the constant pressure water supply system based on PLC.
Background technology
Along with the development and the progress of society, the urban skyscraper water supply problem becomes increasingly conspicuous, and requires on the one hand to improve quality of water supply, can not cause the water supply obstacle because of the fluctuation of pressure, the safety and the reliability that require assurance to supply water on the other hand.And traditional water tower water-feeding mode has exposed a lot of shortcomings: the imbalance of the high ebb of water, and pipeline valve is fragile, and the maintenance expense is too high, secondary pollution of water or the like.The utility model proposes the constant pressure water supply system based on PLC, to realize commercial and residential building constant pressure water supply and energy-conservation environmental requirement.
The utility model content
The purpose of the utility model is the constant pressure water supply system based on PLC is provided, and this system can solve constant pressure water supply, reaches the purpose of energy-conserving and environment-protective.
The implementation of the utility model is following: based on the constant pressure water supply system of PLC, comprise control processor P LC and the water storage system and water pump assembly and the frequency converter that are connected with control processor P LC; Said water pump assembly also with frequency converter.
LC is as main control unit for the control processor P, and the control water storage system makes water storage system as buffer area, and the water from the city pipe valve is played cushioning effect.Under the acting in conjunction of control processor P LC and frequency converter, can be to the water pump assembly control of supplying water.
Said water storage system mainly is made up of motor operated valve A that connects the city pipe valve and the water tank that is connected with motor operated valve A; Motor operated valve A also is parallel with hand-operated valve A; Said water tank is connected with water pump assembly; And said water pump assembly set inside has water level controller, and said water level controller all is connected with control processor P LC with motor operated valve A.
Further, as stated, the water tank in the utility model also is provided with water level controller; Can water level information be transferred to control processor P LC through water level controller, under the information processing of control processor P LC, when water level is reduced to certain position; Control processor P LC can give and sell the order that motor operated valve A opens; When making low water stage, motor operated valve A can open automatically, gives the water tank water-filling.Certainly time influence is supplied water in order to prevent that motor operated valve A from breaking down, and the motor operated valve A of the utility model also is parallel with hand-operated valve A.
Said water pump assembly is mainly by the motor operated valve B that connects water tank, and constitutes with water lift unit, pressure sensor that motor operated valve B is connected successively, said pressure sensor with control processor P LC and be connected.
Said water lift unit comprises the main water lift unit and the secondary water lift unit of parallel connection; Said main water lift unit mainly is made up of motor operated valve C, water pump C, the flap valve C of series connection successively; Said secondary water lift unit mainly is made up of motor operated valve D, water pump D, the flap valve D of series connection successively; Said motor operated valve C all is connected with control processor P LC with motor operated valve B with motor operated valve D, and said flap valve C all is connected with pressure sensor with flap valve D, and said water pump C all is connected with frequency converter with water pump D.
Said motor operated valve B is parallel with hand-operated valve B.
Also be provided with the motor operated valve C that discharges water that is connected control processor P LC between said flap valve C and the pressure sensor; Also be provided with the motor operated valve that discharges water that is connected control processor P LC between flap valve D and the pressure sensor.
The said motor operated valve C that discharges water also is connected with water hammer motor operated valve, the energy storage tank that is connected successively with the tie point of pressure sensor; And said water hammer motor operated valve also is connected with control processor P LC.
The frequency converter set inside has the PID controller.
Further, the operating principle of the utility model is: the mode that adopts two water pump operations; Water pump C is as main pump, and water pump D is as stand by pump.Two pumps are used the Frequency Converter Control alternation, and water pump can both soft start and soft stopping.So not only can reduce the impact of hydraulic pressure, can also improve water hammer effect, avoid the damage of equipment, install energy storage canister simultaneously additional to eliminate water hammer effect to pipeline.
Detect actual outlet pipe pressure by pressure sensor in the work; Pressure sensor becomes analog signal (voltage or current signal to detected pressure signal; Native system adopts voltage signal), and give frequency converter this signal, by the PID controller computing in the frequency converter.Control processor P LC is according to the situation control frequency converter speed-raising or the reduction of speed (by the multistage speed control system of frequency converter) of pressure.When water supply volume hour, water pump of Frequency Converter Control moves under low speed; When water supply volume is big, the operation under at a high speed of Frequency Converter Control water pump; When water supply volume greatly or breaking out of fire and other when needing the people to measure water, start simultaneously by two water pumps of control processor P LC control, to guarantee the stable of pressure.In order to prolong the application life of water pump, let the periodic duty in per 4 hours of two water pumps, with avoid water pump for a long time need not and get rusty.
Further, Inlet and outlet water for ease, the utility model are provided with motor operated valve B as the water inlet main valve.Operations such as while convenient for maintaining, the utility model still has flap valve C, motor operated valve C and flap valve D and the motor operated valve D that discharges water discharge water.All the be limited by control of processor P LC of motor operated valve C and the motor operated valve D that discharges water discharges water.
The advantage of the utility model is: can solve constant pressure water supply, reach the purpose of energy-conserving and environment-protective.
Description of drawings
Fig. 1 is the utility model overall structure sketch map.
The specific embodiment
Embodiment one
As shown in Figure 1.
Based on the constant pressure water supply system of PLC, comprise control processor P LC and the water storage system and water pump assembly and the frequency converter that are connected with control processor P LC; Said water pump assembly also with frequency converter.Water storage system mainly is made up of motor operated valve A that connects the city pipe valve and the water tank that is connected with motor operated valve A; Motor operated valve A also is parallel with hand-operated valve A; Said water tank is connected with water pump assembly; And said water pump assembly set inside has water level controller, and said water level controller all is connected with control processor P LC with motor operated valve A.
LC is as main control unit for the control processor P, and the control water storage system makes water storage system as buffer area, and the water from the city pipe valve is played cushioning effect.Under the acting in conjunction of control processor P LC and frequency converter, can be to the water pump assembly control of supplying water.
Water tank in the utility model also is provided with water level controller; Can water level information be transferred to control processor P LC through water level controller, under the information processing of control processor P LC, when water level is reduced to certain position; Control processor P LC can give and sell the order that motor operated valve A opens; When making low water stage, motor operated valve A can open automatically, gives the water tank water-filling.Certainly time influence is supplied water in order to prevent that motor operated valve A from breaking down, and the motor operated valve A of the utility model also is parallel with hand-operated valve A.
Water pump assembly is mainly by the motor operated valve B that connects water tank, and constitutes with water lift unit, pressure sensor that motor operated valve B is connected successively, said pressure sensor with control processor P LC and be connected.The water lift unit comprises the main water lift unit and the secondary water lift unit of parallel connection; Said main water lift unit mainly is made up of motor operated valve C, water pump C, the flap valve C of series connection successively; Said secondary water lift unit mainly is made up of motor operated valve D, water pump D, the flap valve D of series connection successively; Said motor operated valve C all is connected with control processor P LC with motor operated valve B with motor operated valve D, and said flap valve C all is connected with pressure sensor with flap valve D, and said water pump C all is connected with frequency converter with water pump D.Said motor operated valve B is parallel with hand-operated valve B.Also be provided with the motor operated valve C that discharges water that is connected control processor P LC between flap valve C and the pressure sensor; Also be provided with the motor operated valve that discharges water that is connected control processor P LC between flap valve D and the pressure sensor.The motor operated valve C that discharges water also is connected with water hammer motor operated valve, the energy storage tank that is connected successively with the tie point of pressure sensor; And said water hammer motor operated valve also is connected with control processor P LC.
The frequency converter set inside has the PID controller.
The utility model adopts the mode of two water pump operations; Water pump C is as main pump, and water pump D is as stand by pump.Two pumps are used the Frequency Converter Control alternation, and water pump can both soft start and soft stopping.So not only can reduce the impact of hydraulic pressure, can also improve water hammer effect, avoid the damage of equipment, install energy storage canister simultaneously additional to eliminate water hammer effect to pipeline.
Detect actual outlet pipe pressure by pressure sensor in the work; Pressure sensor becomes analog signal (voltage or current signal to detected pressure signal; Native system adopts voltage signal), and give frequency converter this signal, by the PID controller computing in the frequency converter.Control processor P LC is according to the situation control frequency converter speed-raising or the reduction of speed (by the multistage speed control system of frequency converter) of pressure.When water supply volume hour, water pump of Frequency Converter Control moves under low speed; When water supply volume is big, the operation under at a high speed of Frequency Converter Control water pump; When water supply volume greatly or breaking out of fire and other when needing the people to measure water, start simultaneously by two water pumps of control processor P LC control, to guarantee the stable of pressure.In order to prolong the application life of water pump, let the periodic duty in per 4 hours of two water pumps, with avoid water pump for a long time need not and get rusty.Inlet and outlet water for ease, the utility model are provided with motor operated valve B as the water inlet main valve.Operations such as while convenient for maintaining, the utility model still has flap valve C, motor operated valve C and flap valve D and the motor operated valve D that discharges water discharge water.All the be limited by control of processor P LC of motor operated valve C and the motor operated valve D that discharges water discharges water.
As stated, then can well realize the utility model.
Claims (8)
1. based on the constant pressure water supply system of PLC, it is characterized in that: comprise control processor P LC and the water storage system and water pump assembly and the frequency converter that are connected with control processor P LC.
2. the constant pressure water supply system based on PLC according to claim 1; It is characterized in that: said water storage system mainly is made up of motor operated valve A that connects the city pipe valve and the water tank that is connected with motor operated valve A; Motor operated valve A also is parallel with hand-operated valve A; Said water tank is connected with water pump assembly, and said water pump assembly set inside has water level controller, and said water level controller all is connected with control processor P LC with motor operated valve A.
3. the constant pressure water supply system based on PLC according to claim 2; It is characterized in that: said water pump assembly is mainly by the motor operated valve B that connects water tank; And the water lift unit that is connected successively with motor operated valve B, pressure sensor constitute, said pressure sensor with control processor P LC and be connected.
4. the constant pressure water supply system based on PLC according to claim 3; It is characterized in that: said water lift unit comprises the main water lift unit and the secondary water lift unit of parallel connection; Said main water lift unit mainly is made up of motor operated valve C, water pump C, the flap valve C of series connection successively; Said secondary water lift unit mainly is made up of motor operated valve D, water pump D, the flap valve D of series connection successively; Said motor operated valve C all is connected with control processor P LC with motor operated valve B with motor operated valve D, and said flap valve C all is connected with pressure sensor with flap valve D, and said water pump C all is connected with frequency converter with water pump D.
5. the constant pressure water supply system based on PLC according to claim 3 is characterized in that: said motor operated valve B is parallel with hand-operated valve B.
6. the constant pressure water supply system based on PLC according to claim 3 is characterized in that: also be provided with the motor operated valve C that discharges water that is connected control processor P LC between said flap valve C and the pressure sensor; Also be provided with the motor operated valve that discharges water that is connected control processor P LC between flap valve D and the pressure sensor.
7. the constant pressure water supply system based on PLC according to claim 6 is characterized in that: the said motor operated valve C that discharges water also is connected with water hammer motor operated valve, the energy storage tank that is connected successively with the tie point of pressure sensor; And said water hammer motor operated valve also is connected with control processor P LC.
8. according to any described constant pressure water supply system based on PLC among the claim 1-7, it is characterized in that: the frequency converter set inside has the PID controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202114516U CN202530507U (en) | 2012-05-11 | 2012-05-11 | Programmable logic controller (PLC)-based frequency conversion constant pressure water supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202114516U CN202530507U (en) | 2012-05-11 | 2012-05-11 | Programmable logic controller (PLC)-based frequency conversion constant pressure water supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202530507U true CN202530507U (en) | 2012-11-14 |
Family
ID=47131702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202114516U Expired - Fee Related CN202530507U (en) | 2012-05-11 | 2012-05-11 | Programmable logic controller (PLC)-based frequency conversion constant pressure water supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202530507U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247562A (en) * | 2016-08-31 | 2016-12-21 | 珠海格力电器股份有限公司 | Variable flow control device of air conditioner, air conditioning system and air conditioner control method |
-
2012
- 2012-05-11 CN CN2012202114516U patent/CN202530507U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247562A (en) * | 2016-08-31 | 2016-12-21 | 珠海格力电器股份有限公司 | Variable flow control device of air conditioner, air conditioning system and air conditioner control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103388350A (en) | Frequency-conversion constant-pressure water supply system based on PLC (Programmable Logic Controller) | |
| CN203034538U (en) | Novel non-negative pressure water supply device | |
| CN108786339A (en) | A kind of dust-proof water injector of interior construction auto-partition of subway station | |
| CN102979138A (en) | Intelligent water supply equipment | |
| CN202324069U (en) | Intelligent pipe network laminated pressure (zero negative pressure) stabilized-flow water supply equipment | |
| CN202530507U (en) | Programmable logic controller (PLC)-based frequency conversion constant pressure water supply system | |
| CN201276721Y (en) | Non-negative pressure water supply equipment with flow regulation function | |
| CN201794117U (en) | Gas jacking fire water supply equipment | |
| CN202969532U (en) | Turbine pressurizing water saving device | |
| CN202157378U (en) | Towerless explosion-proof water feeder | |
| CN202530503U (en) | Energy-saving water supply negative-pressure-free pipeline | |
| CN202280113U (en) | Novel variable-frequency constant-pressure water supply system | |
| CN205858706U (en) | Fully automatic vacuum priming device | |
| CN201326199Y (en) | Multi-pump simulated frequency conversion towerless water supply plant of air pressure type | |
| CN201738387U (en) | Constant-pressure and variable-frequency water supply device | |
| CN201043278Y (en) | A fully laminated water supply equipment combined with a water tank | |
| CN211714085U (en) | Non-negative pressure overlying water supply equipment | |
| CN202509565U (en) | Mixed secondary pressurizing water supply equipment | |
| CN201155120Y (en) | Multi-pump linkage energy-saving pneumatic water supply equipment | |
| CN202117711U (en) | Novel water-absorbing pumping equipment for mining | |
| CN202969454U (en) | Intelligent water supply device | |
| CN203654393U (en) | Pressure water inlet pool of pump station at dam toe | |
| CN201933545U (en) | Municipal pipe network energy-saving pressurizing equipment | |
| CN2934369Y (en) | Submersible pump package shell type superposed pressure steady flow water-supply device ( vertical type) | |
| CN205857284U (en) | Multistage interim water supply installation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20130511 |