CN202850126U - Water level control system - Google Patents
Water level control system Download PDFInfo
- Publication number
- CN202850126U CN202850126U CN 201220512492 CN201220512492U CN202850126U CN 202850126 U CN202850126 U CN 202850126U CN 201220512492 CN201220512492 CN 201220512492 CN 201220512492 U CN201220512492 U CN 201220512492U CN 202850126 U CN202850126 U CN 202850126U
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- water
- water level
- speed
- controller
- pump
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Abstract
The utility model provides a water level control system. The water level control system comprises a water container, a water network pipeline and a controller, wherein the water network pipeline is communicated with the water container to supply water to the water container and is provided with a speed-variation pump controlled through a frequency converter, a water pressure sensor is arranged inside the water container, and the frequency converter and the water pressure sensor are in electric connection with the controller. The water level control system detects the variation of water pressure caused by the variation of the water level, further changes the power supply frequency of the frequency converter through the controller, adjusts the rotation speed of the speed-variation pump, guarantees that the water supply quantity changes when the water quantity changes, and keeps the water level constant. When the speed-variation pump breaks down, the water level control system is automatically switched to a power frequency for operation, and guarantees continuity of the water supply. Constant-pressure automatic control is achieved at the same time, an operator does not need to operate frequently, the labor intensity for the operator is relieved, and manpower is saved.
Description
Technical field
The utility model relates to water system, relates in particular to a kind of water level control system that realizes automation control frequency control.
Background technology
Water system of the prior art, its feed pressure is constant, is unfavorable for saving energy and reduce the cost.The scheme of regulating water supply flow by valve is also arranged, although adopt valve throttle regulation and control method simple, actual is the purpose that reaches the throttling regulation and control by the way of artificial increase resistance.The method is wasted a large amount of electric energy, and the operation and maintenance cost of equipment is higher simultaneously.
Chinese utility model patent 200820025067.0 provides a kind of Of Frequency Conversion And Timing Water-Supplying Equipment, its structure comprises water inlet manifold, variable frequency pump and outfall sewer, the variable frequency pump that a group or more is arranged by install pipeline between water inlet manifold and the outfall sewer, between variable frequency pump and outfall sewer, be provided with one way valve, be provided with the distance-transmission pressure gauge interface at outfall sewer, be provided with the distance-transmission pressure gauge that joins with Intelligent control cabinet on the distance-transmission pressure gauge interface, thereby Intelligent control cabinet joins with variable frequency pump again and consists of closed loop controller.This plant automation degree is higher, but structure is comparatively complicated, and application component is numerous, in case and the variable frequency pump fault, the water supply of whole system all will be affected.
The utility model content
The shortcoming of prior art in view of the above, but the purpose of this utility model is to provide a kind of water level control system of automation control frequency control, is used for solving the problems of the prior art.
Reach for achieving the above object other relevant purposes, the utility model provides a kind of water level control system, comprise water receptacle, network of rivers pipeline and controller, described network of rivers pipeline communicates with described water receptacle and is described water receptacle water supply, described network of rivers pipeline is provided with a speed-variable pump by Frequency Converter Control, be provided with a hydraulic pressure sensor in the described water receptacle, described frequency converter, hydraulic pressure sensor and controller electrical connection.
Further, also comprise a constant speed pump, described constant speed pump and described speed-variable pump are arranged in parallel on the pipeline of the described network of rivers, described constant speed pump and controller electrical connection.
Further, described controller is constant-voltage controller.
By above technical scheme, the utlity model has following technique effect:
The utility model is by detecting the variation in water pressure that causes because of SEA LEVEL VARIATION, and then change the frequency of supply of frequency converter by controller, regulate the speed-variable pump rotating speed, guarantee that when water supply volume changes output also changes thereupon, and constant speed pump for subsequent use is to satisfy the descend needs of variable frequency pump efficient deficiency when too fast of water level.Realize the coupling of output and water supply volume, keep stable level.When speed-variable pump breaks down, can also automatically be converted to power frequency operation, guarantee to supply water uninterrupted.Realize that simultaneously constant voltage controls automatically, need not operating personnel's frequent operation, reduced personnel's labour intensity, save manpower.
Description of drawings
Fig. 1 is the utility model system block diagram;
Fig. 2 is the utility model main circuit diagram;
Fig. 3 is water level signal control circuit figure.
The element numbers explanation:
The 2-controller; The 3-hydraulic pressure sensor; The 4-frequency converter;
The M1-speed-variable pump; The M2-constant speed pump.
The specific embodiment
Below by particular specific embodiment embodiment of the present utility model is described, person skilled in the art scholar can understand other advantages of the present utility model and effect easily by the disclosed content of this manual.
As shown in Figure 1, the utility model provides a kind of water level control system, comprise water receptacle, network of rivers pipeline and controller 2, network of rivers pipeline communicates with water receptacle and is water receptacle water supply, network of rivers pipeline is provided with a speed-variable pump M1 by frequency converter 4 controls, be provided with a hydraulic pressure sensor 3 in the water receptacle, frequency converter 4, hydraulic pressure sensor 3 and controller 2 electrical connections, controller 2 adopts constant-voltage controller.The pressure signal value of hydraulic pressure sensor collection transfers to controller, and controller sends control signal according to the force value of this pressure signal value and setting to frequency converter.When hydraulic pressure reduced along with water level, controller control frequency converter output frequency improved, and the speed-variable pump accelerated service realizes stable level.When hydraulic pressure rose along with water level, the output frequency of controller control frequency converter reduced the speed-variable pump decelerate.According to the variation of hydraulic pressure, realize the speed-variable pump speed governing by the frequency that changes frequency converter like this, keep the stable of water level.
Also be provided with a constant speed pump M2 in parallel with speed-variable pump M1 on the pipeline of the network of rivers, constant speed pump M2 also is electrically connected with controller 2.When the decline of Water in Water Tanks position is slower, can only with the speed-variable pump M1 of inverter supply, when the frequency of inverter supply reaches maximum, show that a water pump can not satisfy the system water requirement, need this moment to start constant speed pump M2, worked simultaneously by speed-variable pump M1 and constant speed pump M2.When the system water amount was reduced to the output frequency that makes frequency converter and is lower than a certain setting value, this Time Controller 2 was just stopped transport constant speed pump M2, only uses speed-variable pump M1.This is and gets back to original state, so moves in circles, to satisfy the stable needs in Water in Water Tanks position.
The specific works process is as follows:
(1) speed-variable pump M1 operating principle.As shown in Figures 2 and 3, automatic switch QF, QF1, QF2 close, changeover switch SA is gone to " automatic transmission ", controller 2 and time relay KT1 switch on simultaneously, and after the predetermined time time-delay, the moving together contact of time relay KT1 timing closing is closed, point 105 and put 107 conductings, contactor KM1 coil gets electric, makes speed-variable pump M1 start running, constant pressure water supply.Hydraulic signal transfers to controller through hydraulic pressure sensor, is controlled the output frequency of frequency converter by controller with the rotating speed of control speed-variable pump M1.Hydraulic pressure can be with the corresponding change of SEA LEVEL VARIATION, and when water level reduced, hydraulic pressure reduced, and controller improves the frequency converter output frequency, and speed-variable pump M1 accelerated service realizes stable level.When water level rose, hydraulic pressure raise, and controller makes the output frequency of frequency converter reduce speed-variable pump M1 decelerate.According to the variation of hydraulic pressure, realize speed-variable pump M1 speed governing by the frequency that changes frequency converter like this, kept the stable of water level.
(2) descend when too fast when water level, two water pumps move simultaneously.After speed-variable pump M1 starts, along with water level continues to reduce, the output frequency of frequency converter improves, the continuous accelerated service of speed-variable pump M1, when the frequency of supply of frequency converter reaches maximum, in the time of still can't satisfying water level stable, it is electric that controller makes the control closing of contact of constant speed pump M2 that time relay KT2 is got, after ticket reserving time time-delay, and point 219 and put the moving together contact retarded closing of 215 time relay KT2, time relay KT4 is got electric, the moving together contact that time relay KT4 time-delay the disconnects closure of taking advantage of a situation, point 211 and put 207 conductings is so the main contacts of contactor KM2 coil is closed, constant speed pump M2 starts, to satisfy the too fast needs of water level decline.
(3) when water level decline is slower, constant speed pump M2 stall.When water level decline is lower than setting value to the output frequency that makes frequency converter more slowly, controller makes point 211 and the point 217 in the constant speed pump M2 control loop separated, the dispensing of time relay KT2 coil losing electricity, also dead electricity of time relay KT4 coil subsequently, the moving together contact time-delay of time relay KT4 power cut off delay disconnects, and point 211 and point 207 are separated, make contactor KM2 coil losing electricity, its main contacts disconnects, and constant speed pump M2 shuts down, and makes water level keep balance.
(4) speed-variable pump malfunction, when speed-variable pump M1 breaks down in the course of the work, electric contact ARM in the frequency converter is closed, point 5 and put 7 conductings, make the closed also self-locking of auxiliary reclay KA2 coil electricity, point 1 and put 9 conductings, alarm bell HA rings, simultaneously time relay KT3 energising, behind the time delays of subscribing, the moving together contact timing closing of time relay KT3, point 211 and put 207 conductings, contactor KM2 coil is got electric, the main contacts action of contactor KM2 is closed, and constant speed pump M2 starts running.
In sum, the utility model changes according to Water-level hydraulic and changes frequency of supply, regulates speed-variable pump rotating speed and constant speed pump for subsequent use, guarantees that output also changes thereupon when water supply volume changes, and realizes the coupling of output and water supply volume, keeps stable level.So the utility model has effectively overcome various shortcoming of the prior art and the tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not is used for restriction the utility model.Any person skilled in the art scholar all can be under spirit of the present utility model and category, and above-described embodiment is modified or changed.Therefore, have in the technical field under such as and know that usually the knowledgeable modifies or changes not breaking away from all equivalences of finishing under spirit that the utility model discloses and the technological thought, must be contained by claim of the present utility model.
Claims (3)
1. water level control system, it is characterized in that, comprise water receptacle, network of rivers pipeline and controller, described network of rivers pipeline communicates with described water receptacle and is described water receptacle water supply, described network of rivers pipeline is provided with a speed-variable pump by Frequency Converter Control, be provided with a hydraulic pressure sensor in the described water receptacle, described frequency converter, hydraulic pressure sensor and controller electrical connection.
2. a kind of water level control system according to claim 1 is characterized in that, also comprises a constant speed pump, and described constant speed pump and described speed-variable pump are arranged in parallel on the pipeline of the described network of rivers, described constant speed pump and controller electrical connection.
3. a kind of water level control system according to claim 1 and 2 is characterized in that, described controller is constant-voltage controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220512492 CN202850126U (en) | 2012-10-08 | 2012-10-08 | Water level control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220512492 CN202850126U (en) | 2012-10-08 | 2012-10-08 | Water level control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202850126U true CN202850126U (en) | 2013-04-03 |
Family
ID=47981341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220512492 Expired - Lifetime CN202850126U (en) | 2012-10-08 | 2012-10-08 | Water level control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202850126U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464170A (en) * | 2015-11-23 | 2016-04-06 | 嘉兴职业技术学院 | Livestock breeding water supply system |
| CN108571461A (en) * | 2018-05-31 | 2018-09-25 | 河南森源电气股份有限公司 | Fan controller, blower fan system and frequency convertor system |
-
2012
- 2012-10-08 CN CN 201220512492 patent/CN202850126U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464170A (en) * | 2015-11-23 | 2016-04-06 | 嘉兴职业技术学院 | Livestock breeding water supply system |
| CN108571461A (en) * | 2018-05-31 | 2018-09-25 | 河南森源电气股份有限公司 | Fan controller, blower fan system and frequency convertor system |
| CN108571461B (en) * | 2018-05-31 | 2023-11-21 | 河南森源电气股份有限公司 | Fan control device, fan system and frequency converter system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |