CN209873946U - PID constant pressure control system of water supply system - Google Patents
PID constant pressure control system of water supply system Download PDFInfo
- Publication number
- CN209873946U CN209873946U CN201920394029.0U CN201920394029U CN209873946U CN 209873946 U CN209873946 U CN 209873946U CN 201920394029 U CN201920394029 U CN 201920394029U CN 209873946 U CN209873946 U CN 209873946U
- Authority
- CN
- China
- Prior art keywords
- pid
- control module
- signal isolator
- frequency converter
- plc control
- 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
Landscapes
- Control Of Fluid Pressure (AREA)
- Feedback Control In General (AREA)
Abstract
The utility model discloses a PID constant pressure control system of a water supply system, which comprises a PLC control module, a PID control instrument, a frequency converter, a water replenishing pump and a pressure sensor, wherein the PLC control module is connected with the frequency converter, the frequency converter is also connected with the PID control instrument and the water replenishing pump respectively, and the pressure sensor is connected with the water replenishing pump, a signal isolator A and a signal isolator B through data lines respectively; the signal isolator A is connected with the PLC control module, and the signal isolator B is connected with the PID control instrument. The utility model discloses a PLC control module carries out automatic constant voltage control, and PLC control module scanning period is the ms level, and the dynamic response cycle is short, and response speed is fast, and the operation precision is high, has realized that water supply pressure lasts stably. The utility model discloses be furnished with manual PID pressure control instrument simultaneously, can be at the emergent use of PLC control module when breaking down, the reliable and stable operation of assurance system.
Description
Technical Field
The utility model relates to a control system, especially a water supply system's PID constant voltage control system.
Background
The traditional water supply mode has large floor area, easily-polluted water quality and high capital investment, and has the main defects that the water pressure cannot be kept constant, so that part of equipment cannot work normally. The constant pressure water supply can keep the water supply pressure constant, and balance between the water supply and the water use can be kept, namely, when the water is used, the water supply is more, and when the water is used, the water supply is less, so that the water supply quality is improved. The existing constant-pressure control system has a single structure, and only adopts a simple pressure control instrument and variable-frequency speed regulation to realize constant-pressure control. The traditional pressure control instrument has no signal isolation function and poor anti-electromagnetic interference performance; an emergency power supply device is not adopted, and a system control power supply is unstable; the pressure control instrument has slow data processing speed, weak dynamic response characteristic, great disturbance of water supply pressure and unstable water supply pressure.
SUMMERY OF THE UTILITY MODEL
For solving the above-mentioned problem that prior art exists, the utility model discloses a design a good, the stable and water supply pressure stable water supply system's of control power supply PID constant voltage control system of anti-electromagnetic interference performance.
In order to achieve the above purpose, the technical solution of the present invention is as follows: a PID constant pressure control system of a water supply system comprises a PLC control module, a PID control instrument, a frequency converter, a water replenishing pump and a pressure sensor, wherein the output end of the PLC control module is connected with the frequency converter, the input end of the frequency converter is also connected with the PID control instrument, the output end of the frequency converter is connected with the water replenishing pump, and the pressure sensor is respectively connected with the water replenishing pump, a signal isolator A and a signal isolator B through data lines; the output end of the signal isolator A is connected with the PLC control module, and the output end of the signal isolator B is connected with the PID control instrument;
the PID control instrument is also connected with the manual controller;
and the PLC control module is also respectively connected with the fault detector, the PLC power supply module and the touch screen.
Furthermore, the PLC power module is connected with the UPS power supply.
Furthermore, the fault detector is integrated in the PLC control module.
Further, the PLC control module is Rockwell 1769-L16ER-BB 1B; the PID control instrument is Japanese conductive SR 3-6I-1C; the frequency converter is Schneider ATV212HU75N4, and the specification is 7.5 kW; the water supplementing pump is 65GDL24-12 × 5 in traumatology; the pressure sensor is iridescent HRK2S1G1F2B5F 1; the touch screen is Schneider HMIGXU 3512; signal isolator A and signal isolator B are both rainbow HRGL 324.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses a PLC control module carries out automatic constant voltage control, and PLC control module scanning cycle is the ms level, and the dynamic response cycle is short, and response speed is fast, and the operation precision is high, control line pressure that can be very accurate, has realized that water supply pressure lasts stably.
2. For the reliable and stable nature who improves the system, the utility model discloses be furnished with manual PID pressure control instrument simultaneously, can be when PLC control module breaks down emergent the use, guarantee the reliable and stable operation of system.
3. The utility model discloses a signal isolation technique prevents signal interference, guarantees data acquisition's stable accurate, has improved anti-electromagnetic interference performance.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. UPS power, 2, PLC power module, 3, PLC control module, 4, touch-sensitive screen, 5, manual control, 6, PID control instrument, 7, converter, 8, moisturizing pump, 9, signal isolator B, 10, pressure sensor, 11, signal isolator A, 12, fault detector.
Detailed Description
The invention is further described below with reference to the accompanying drawings. As shown in fig. 1, a PID constant pressure control system of a water supply system comprises a PLC control module 3, a PID control instrument 6, a frequency converter 7, a water replenishing pump 8 and a pressure sensor 10, wherein an output end of the PLC control module 3 is connected with the frequency converter 7, an input end of the frequency converter 7 is further connected with the PID control instrument 6, an output end of the frequency converter 7 is connected with the water replenishing pump 8, and the pressure sensor 10 is respectively connected with the water replenishing pump 8, a signal isolator a11 and a signal isolator B9 through data lines; the output end of the signal isolator A11 is connected with the PLC control module 3, and the output end of the signal isolator B9 is connected with the PID control instrument 6;
the PID control instrument 6 is also connected with the manual controller 5;
and the PLC control module 3 is also respectively connected with the fault detector 12, the PLC power supply module 2 and the touch screen 4.
Further, the PLC power module 2 is connected to the UPS power supply 1.
Further, the fault detector 12 is integrated in the PLC control module 3.
Further, the PLC control module 3 is Rockwell 1769-L16ER-BB 1B; the PID control instrument 6 is a Japanese conductive SR 3-6I-1C; the frequency converter 7 is Schneider ATV212HU75N4 with specification of 7.5 kW; the water replenishing pump 8 is 65GDL24-12 × 5 of traumatology department; the pressure sensor 10 is iridescent HRK2S1G1F2B5F 1; the touch screen 4 is Schneider HMIGXU 3512; signal isolator A11 and signal isolator B9 are both iridescent HRGL 324.
The working principle of the utility model is as follows:
the utility model discloses there is moisturizing pump 8 to adopt manual and automatic control, and constant voltage moisturizing function can all be realized to these two kinds of working methods. In a manual control mode, pipeline pressure is monitored in real time through a PID control instrument 6, and the rotating speed output of a frequency converter 7 is manually adjusted to realize constant-pressure water supplement; under the automatic control mode, pipeline pressure is monitored in real time through the PLC control module 3, and the rotating speed output of the frequency converter 7 is automatically adjusted to realize constant-pressure water supplement. Through the two control modes, the safety and the reliable operation of the constant-pressure water supply system are ensured.
The present invention is not limited to the embodiment, and any equivalent concept or change within the technical scope of the present invention is all listed as the protection scope of the present invention.
Claims (4)
1. The utility model provides a water supply system's PID constant voltage control system which characterized in that: the device comprises a PLC control module (3), a PID control instrument (6), a frequency converter (7), a water replenishing pump (8) and a pressure sensor (10), wherein the output end of the PLC control module (3) is connected with the frequency converter (7), the input end of the frequency converter (7) is also connected with the PID control instrument (6), the output end of the frequency converter (7) is connected with the water replenishing pump (8), and the pressure sensor (10) is respectively connected with the water replenishing pump (8), a signal isolator A (11) and a signal isolator B (9) through data lines; the output end of the signal isolator A (11) is connected with the PLC control module (3), and the output end of the signal isolator B (9) is connected with the PID control instrument (6);
the PID control instrument (6) is also connected with the manual controller (5);
the PLC control module (3) is further connected with the fault detector (12), the PLC power module (2) and the touch screen (4) respectively.
2. The PID constant pressure control system of a water supply system as claimed in claim 1, wherein: the PLC power module (2) is connected with the UPS power supply (1).
3. The PID constant pressure control system of a water supply system as claimed in claim 1, wherein: the fault detector (12) is integrated in the PLC control module (3).
4. The PID constant pressure control system of a water supply system as claimed in claim 1, wherein: the PLC control module (3) is Rockwell 1769-L16ER-BB 1B; the PID control instrument (6) is a Japanese conductive SR 3-6I-1C; the frequency converter (7) is Schneider ATV212HU75N4 with specification of 7.5 kW; the water replenishing pump (8) is 65GDL24-12 × 5 of the traumatology department; the pressure sensor (10) is iridescent HRK2S1G1F2B5F 1; the touch screen (4) is Schneider HMIGXU 3512; signal isolator A (11) and signal isolator B (9) are both iridescent HRGL 324.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920394029.0U CN209873946U (en) | 2019-03-27 | 2019-03-27 | PID constant pressure control system of water supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920394029.0U CN209873946U (en) | 2019-03-27 | 2019-03-27 | PID constant pressure control system of water supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209873946U true CN209873946U (en) | 2019-12-31 |
Family
ID=68956756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920394029.0U Expired - Fee Related CN209873946U (en) | 2019-03-27 | 2019-03-27 | PID constant pressure control system of water supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209873946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828299A (en) * | 2020-07-16 | 2020-10-27 | 上海熠动动力科技有限公司 | Constant-pressure water supply control method without pressure sensor |
-
2019
- 2019-03-27 CN CN201920394029.0U patent/CN209873946U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828299A (en) * | 2020-07-16 | 2020-10-27 | 上海熠动动力科技有限公司 | Constant-pressure water supply control method without pressure sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102777887B (en) | Protection control device and protection control method for constant-differential-pressure electric adjusting valve for water-supply of boiler | |
| CN209873946U (en) | PID constant pressure control system of water supply system | |
| CN103414431A (en) | Servo motion control integrated machine system for flying saw machine | |
| CN205207074U (en) | Special PMSM actuating system of air compressor machine | |
| CN204646613U (en) | A kind of self-starting of stand by pump and interlock system | |
| CN204859012U (en) | But direct current controlgear of high accuracy steady voltage communication | |
| CN202502398U (en) | Synchronous control system for draw machines of chemical fiber industry | |
| CN105094016A (en) | Ship-borne controller for all-electric double-power-supply ships | |
| CN107894784A (en) | A kind of Dynamic water balance control method and device | |
| CN206256997U (en) | Hydrodynamic governor structure | |
| CN109149660B (en) | Reactive power control method and system for photovoltaic power generation system | |
| CN203027127U (en) | Isolation type voltage sag protection device for direct current load | |
| CN205265370U (en) | Novel SVG controller | |
| CN209373412U (en) | PLC automatic control system | |
| CN204904031U (en) | Electricelectric moves on -board controller of two electric ships | |
| CN205960655U (en) | Dynamic reactive compensation module | |
| CN204347558U (en) | A kind of fiber laser interface arrangement for linking number Ore-controlling Role | |
| CN211046503U (en) | Automatic grid-connected container for ship electricity and shore electricity | |
| CN213915507U (en) | Wire drawing machine | |
| CN105187004B (en) | A kind of photovoltaic generation counter current protection | |
| CN208576288U (en) | A kind of industrial printer automatic control pneumatic generation system | |
| CN207878567U (en) | A kind of Full-automatic variable-frequency water supply computer controller | |
| CN207658012U (en) | Can adjust automatically ship heel in real time device | |
| CN207846553U (en) | A kind of Backpack type all-in-one machine control system and Backpack type all-in-one machine | |
| CN211296607U (en) | Emergency machine unit controller device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191231 |