CN201560451U - Control system of variable-frequency water supply without negative pressure - Google Patents
Control system of variable-frequency water supply without negative pressure Download PDFInfo
- Publication number
- CN201560451U CN201560451U CN2009203177243U CN200920317724U CN201560451U CN 201560451 U CN201560451 U CN 201560451U CN 2009203177243 U CN2009203177243 U CN 2009203177243U CN 200920317724 U CN200920317724 U CN 200920317724U CN 201560451 U CN201560451 U CN 201560451U
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- control
- level controller
- plc controller
- switch board
- controller
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Abstract
The utility model relates to the field of water supply equipment control, in particular to a control system of a variable-frequency water supply without negative pressure, which is provided with a control cabinet, a motor and a transmissible pressure gauge. A thermal relay protector, an alternating current contactor, a frequency converter, a low-voltage circuit breaker and an operation panel are arranged on the control cabinet. The system is characterized in that a touch screen and a PLC controller are disposed on the control cabinet, the touch screen and a control transformer are respectively connected to the PLC controller, a liquid level controller, an intermediate relay and the control transformer are arranged on a frequency converter circuit inside the control cabinet, and the liquid level controller and the intermediate relay are connected in series prior to be connected in series onto the control transformer. Electrode type liquid level controllers are mounted on a pipe network and connected with the liquid level controller inside the control cabinet, and electric-contact pressure gauges arranged on the pipe network are connected with the PLC controller. By adopting the structure, the system has the advantages of adjustable parameters, halt without water, automatic control, easy sleep, energy saving and the like.
Description
Technical field
The utility model relates to water supply facilities control field, specifically a kind of non-negative-pressure variable frequency feed water control system.
Background technology
At present; the frequency conversion feed water control system that is applied to tap water control pipe network is by switch board; motor; teletransmission pressure meter on the pipe network is formed; switch board is provided with hot relay protector; A.C. contactor; frequency converter; low-voltage circuit breaker and guidance panel; guidance panel is provided with changeover switch; indicator lamp; buzzer; start button and stop button; every water pump all is by work frequency circuit and frequency changer circuit control; work frequency circuit is by low-voltage circuit breaker; A.C. contactor; hot relay protector series connection; output with frequency converter; be parallel to the motor input again after the A.C. contactor series connection; the constant close contact of the constant close contact of frequency changer circuit one route industrial frequency AC contactor and the frequency-changing AC contactor on other road and relay protector series connection; and with manually; the power frequency parallel connection is linked into the constant close contact of hot relay protector; also be parallel with voltmeter on the work frequency circuit; mutual inductor and ammeter; the teletransmission pressure meter is connected with frequency converter; changeover switch on the guidance panel; indicator lamp; buzzer; start button and stop button are in parallel with frequency converter respectively; be used to control water supply system; its deficiency is: frequency conversion is adopted Frequency Converter Control to water management; the debugging converter parameter; auxiliary sleep mode is wayward, and converter parameter is transferred cumbersome.
Summary of the invention
The purpose of this utility model is to solve above-mentioned the deficiencies in the prior art, and a kind of rational in infrastructure, non-negative-pressure variable frequency feed water control system of being easy to dormancy, overpressure protection, anhydrous shutdown, energy conservation is provided.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of non-negative-pressure variable frequency feed water control system; be provided with switch board, motor and teletransmission pressure meter; switch board is provided with hot relay protector, A.C. contactor, frequency converter, low-voltage circuit breaker and guidance panel; it is characterized in that switch board is provided with touch-screen and PLC controller; touch-screen is connected with the PLC controller respectively with control transformer; make frequency conversion adopt the control of PLC controller to water management, parameter is adjustable, reaches program control purpose.
The utility model can be provided with fluid level controller on the frequency changer circuit in switch board; auxiliary reclay and control transformer; fluid level controller be concatenated on the control transformer again after auxiliary reclay is connected; control transformer provides 24V safe voltage; installing electrodes formula water level controller on the pipe network; fluid level controller in electrode mode level controller and the switch board is connected; in order to control water level; when fluid level controller in the switch board detects the signal of the lack of water that electrode mode level controller transmits; auxiliary reclay KA2 gets; the constant open contact closure of KA1; the PLC controller turn-offs output; guidance panel shows lack of water and sends sound and light alarm; when liquid level reaches requirement, report to the police and eliminate automatically, reach the function of anhydrous shutdown.
The utility model can be provided with electro connecting pressure gauge on pipe network, electro connecting pressure gauge is connected with the PLC controller, electro connecting pressure gauge is delivered to the PLC controller to detected tap water pressure signal, when tap water pressure satisfies water supply requirement, turn-off output, all motors shut down, and only supply water with tap water pressure, reach automatic control, be easy to dormancy, the purpose of energy conservation.
The utility model is owing to adopt said structure, and it is adjustable to have parameter, anhydrous shutdown, controls, is easy to advantages such as dormancy, energy conservation automatically.
Description of drawings
Fig. 1 is the prior art constructions schematic diagram.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is the control principle figure of prior art.
Fig. 4 is control principle figure of the present utility model.
Reference numeral: motor 1, hot relay protector 2, A.C. contactor 3, frequency converter 4, voltmeter 5, mutual inductor 6, ammeter 7, low-voltage circuit breaker 8, changeover switch 10, PLC controller 11, electro connecting pressure gauge 12, teletransmission pressure meter 13, fluid level controller 14, control transformer 15, auxiliary reclay 16, indicator lamp 17, buzzer 18, guidance panel 19, stop button 20, start button 21, touch-screen 22, electrode mode level controller 23, switch board 24
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is further specified:
As shown in drawings; a kind of non-negative-pressure variable frequency feed water control system; be provided with switch board 24; motor 1 and teletransmission pressure meter 13; the annexation of motor 1 and teletransmission pressure meter 13 is same as the prior art; this does not give unnecessary details; switch board 24 is provided with hot relay protector 2; A.C. contactor 3; frequency converter 4; low-voltage circuit breaker 8 and guidance panel 19; guidance panel 19 is provided with changeover switch 10; indicator lamp 17; buzzer 18; start button 21 and stop button 20; hot relay protector 2; A.C. contactor 3; frequency converter 4; low-voltage circuit breaker 8; voltmeter 5; mutual inductor 6; ammeter 7; changeover switch 10; indicator lamp 17; buzzer 18; the annexation of start button 21 and stop button 20 is same as the prior art; this does not give unnecessary details; it is characterized in that switch board 24 is provided with touch-screen 22 and PLC controller 11; touch-screen 22 is connected with PLC controller 11 respectively with control transformer 15; make frequency conversion adopt 11 controls of PLC controller to water management; parameter is adjustable, reaches program control purpose.
The utility model can be provided with fluid level controller 14 on the frequency changer circuit in switch board 24; auxiliary reclay 16 and control transformer 15; fluid level controller 14 be concatenated into again on the control transformer 15 after auxiliary reclay 16 is connected; control transformer 15 provides 24V safe voltage; installing electrodes formula water level controller 23 on the pipe network; fluid level controller 14 in electrode mode level controller 23 and the switch board 24 is connected; in order to control water level; when fluid level controller 14 in the switch board 24 detects the signal of the lack of water that electrode mode level controller 23 transmits; the KA2 of auxiliary reclay 16 gets; the constant open contact closure of KA1; PLC controller 11 turn-offs output; guidance panel 19 shows lack of water and sends sound and light alarm; when liquid level reaches requirement, report to the police and eliminate automatically, reach the function of anhydrous shutdown.
The utility model can be provided with electro connecting pressure gauge 12 on pipe network, electro connecting pressure gauge 12 is connected with PLC controller 11, electro connecting pressure gauge 12 is delivered to PLC controller 11 to detected tap water pressure signal, when tap water pressure satisfies water supply requirement, turn-off output, all motors 1 shut down, and only supply water with tap water pressure, reach automatic control, be easy to dormancy, the purpose of energy conservation.
When SA beats when manual, start button by No. 1 motor 1, the KM2 coil of A.C. contactor 3 gets electric, the main contacts closure of A.C. contactor 3KM2, and main circuit is connected, motor 1 starts, press the stop button of No. 1 motor 1, the KM2 coil losing electricity, the main contacts of KM2 disconnects, main circuit is obstructed, and motor 1 shuts down.No. 1, other motor action and motor are roughly the same.When SA beats when automatic, the KA1 of auxiliary reclay 16 gets electric, and the constant open contact closure of KA1 provides the converting operation signal, frequency-changing AC contactor 3 adhesives of first motor 1, according to the feedback size of teletransmission pressure meter 13, regulate motor 1 rotating speed, when water supply volume increases, still do not reach setting pressure through continuity after a while, then first motor 1 changes power frequency over to, and second motor 1 drops into frequency conversion, and the like.When water supply volume reduces, through certain time-delay, the motor 1 that changes power frequency the earliest over to shuts down, if water supply volume continues to reduce, through certain time-delay, second motor 1 that changes power frequency over to shuts down, a so only surplus variable-frequency motor 1 running is under water supply volume at night situation seldom, through certain time-delay, whole system is in dormancy, and all motors shut down.
When fluid level controller 14 in the switch board 24 detects the signal of the lack of water that electrode mode level controller 23 transmits, the KA2 of auxiliary reclay 16 gets, the constant open contact closure of KA1, PLC controller 11 turn-offs output, and guidance panel 19 shows lack of water and sends sound and light alarm.When liquid level reaches requirement, report to the police and eliminate automatically.
Electro connecting pressure gauge 12 is delivered to PLC controller 11 to detected tap water pressure signal, when tap water pressure satisfies water supply requirement, turn-offs output, and all motors 1 shut down.Only supply water with tap water pressure.
, analyze relatively to PLC controller 11 by teletransmission pressure meter feedback signal through PLC controller 11, when water supply volume after a little while, open a pump operation; When a water pump output was not enough, first water pump transferred power frequency operation to, next water pump of variable frequency starting, and the like.When water supply volume reduces, close general pump successively, when evening during water of no use, water pump is in resting state through the automatic delay function of certain hour.Pressure detecting is adopted in import, and when tap water pressure met the demands, water pump cut out automatically, made equipment more energy-conservation.
The utility model is owing to adopt said structure, and it is adjustable to have parameter, anhydrous shutdown, automatically controls, is easy to the advantages such as dormancy, energy savings.
Claims (3)
1. non-negative-pressure variable frequency feed water control system; be provided with switch board, motor and teletransmission pressure meter; switch board is provided with hot relay protector, A.C. contactor, frequency converter, low-voltage circuit breaker and guidance panel; it is characterized in that switch board is provided with touch-screen and PLC controller, touch-screen is connected with the PLC controller respectively with control transformer.
2. a kind of non-negative-pressure variable frequency feed water control system according to claim 1, it is characterized in that the frequency changer circuit in the switch board is provided with fluid level controller, auxiliary reclay and control transformer, fluid level controller be concatenated on the control transformer again after auxiliary reclay is connected, fluid level controller in the installing electrodes formula water level controller on the pipe network, electrode mode level controller and switch board is connected.
3. a kind of non-negative-pressure variable frequency feed water control system according to claim 1 is characterized in that pipe network is provided with electro connecting pressure gauge, and electro connecting pressure gauge is connected with the PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203177243U CN201560451U (en) | 2009-12-17 | 2009-12-17 | Control system of variable-frequency water supply without negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203177243U CN201560451U (en) | 2009-12-17 | 2009-12-17 | Control system of variable-frequency water supply without negative pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201560451U true CN201560451U (en) | 2010-08-25 |
Family
ID=42625598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203177243U Expired - Fee Related CN201560451U (en) | 2009-12-17 | 2009-12-17 | Control system of variable-frequency water supply without negative pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201560451U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759210A (en) * | 2011-04-27 | 2012-10-31 | 姚福来 | Automatic water feeding device of solar water heater |
| CN104234135A (en) * | 2014-09-28 | 2014-12-24 | 安徽舜禹水务实业有限公司 | Outdoor pressure superposed water supply device |
| CN106033002A (en) * | 2015-03-20 | 2016-10-19 | 唐山开诚电控设备集团有限公司 | Explosion-proof high pressure frequency converter water cooling system liquid level detection device |
-
2009
- 2009-12-17 CN CN2009203177243U patent/CN201560451U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759210A (en) * | 2011-04-27 | 2012-10-31 | 姚福来 | Automatic water feeding device of solar water heater |
| CN104234135A (en) * | 2014-09-28 | 2014-12-24 | 安徽舜禹水务实业有限公司 | Outdoor pressure superposed water supply device |
| CN106033002A (en) * | 2015-03-20 | 2016-10-19 | 唐山开诚电控设备集团有限公司 | Explosion-proof high pressure frequency converter water cooling system liquid level detection device |
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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: 20100825 Termination date: 20101217 |