CN203560067U - Constant flow intelligent power-saving protection control system based on double water pumps - Google Patents
Constant flow intelligent power-saving protection control system based on double water pumps Download PDFInfo
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- CN203560067U CN203560067U CN201320474250.XU CN201320474250U CN203560067U CN 203560067 U CN203560067 U CN 203560067U CN 201320474250 U CN201320474250 U CN 201320474250U CN 203560067 U CN203560067 U CN 203560067U
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- China
- Prior art keywords
- frequency variator
- constant
- constant flow
- control device
- water pump
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Abstract
The utility model relates to a constant flow intelligent power-saving protection control system based on double water pumps. The main technical characteristic is that: the constant flow intelligent power-saving protection control system comprises a constant flow control device, a flow sensor, a pressure sensor and an acquisition transmission module; an input end of the constant flow control device is connected with the flow sensor and the pressure sensor which are arranged in a main water outlet pipeline; the input end of the constant flow control device is also connected with the acquisition transmission module which is connected with a three-phrase alternating current power supply in order to be used for acquiring electric current of the alternating current power supply; and an output control end of the constant flow control device is connected with a first frequency converter and a second frequency converter. The constant flow intelligent power-saving protection control system based on the double water pumps has following beneficial effects: the constant flow intelligent power-saving protection control system is reasonable in design; an operational water pumps and a spare water pump can be operated at the same time by control of the constant flow control device; the energy-saving rate of a water pump system is significantly improved; and a protection function of the system is fulfilled so that the system is ensured to be operated safely and reliably.
Description
Technical field
The utility model belongs to power-saving technique field, especially a kind of constant flow intelligent electricity-saving protection control system based on double water pump.
Background technique
At motor, be with in asquare torque load (blower fan, pump class) system, conventionally by one or more process pump and a stand by pump, formed, stand by pump conventionally when process pump breaks down just incision system come into operation.In this system, be much with the operation of substantially invariable flow, and when operation valve wide open to guarantee its flow; If this condition cannot reach power savings by traditional constant voltage control mode, cause the waste of power resource.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of constant flow intelligent electricity-saving protection control system based on double water pump of reasonable in design, saving power is provided.
The utility model solves its technical problem and takes following technological scheme to realize:
A constant flow intelligent electricity-saving protection control system based on double water pump, comprises the first frequency variator, the first motor, operation water pump, the second frequency variator, the second motor and reserve pump, the first described frequency variator, the second frequency variator is connected with three-phase alternating-current supply, the first frequency variator, the first motor, operation water pump is connected successively, the second frequency variator, the second motor, reserve pump is connected successively, and the output terminal of operation water pump and reserve pump is connected on outfall sewer road jointly, also comprises constant-flow control device, flow transducer, pressure transducer and collection transmission module, the input end of this constant-flow control device is connected with pressure transducer with the flow transducer of installing on outfall sewer road respectively, the input end of this constant-flow control device is also connected with collection transmission module, this collection transmission module is connected with three-phase alternating-current supply for gathering the electric current of ac power supply, and the output control terminal of this constant-flow control device is connected with the second frequency variator with the first frequency variator.
And, described constant-flow control device connects and composes by controlling output unit, data processing unit, data-interface, communication module, man-machine interface, data processing unit is connected with control output unit, data-interface, man-machine interface respectively, this data-interface is connected with flow transducer, pressure transducer and communication module, this communication module is connected with collection transmission module, and this control output unit is connected with the second frequency variator with the first frequency variator.
And described communication module is also connected with Internet of things system and by Internet of things system, constant-flow control device is controlled.
And the first described frequency variator and the second frequency variator are non-harmonic frequency converter or common frequency variator.
Advantage of the present utility model and good effect are:
The utility model is reasonable in design; it increases constant-current control device and is connected with operation water pump and reserve pump in existing water pump system; by constant-current control device, control and make to move water pump and reserve pump moves simultaneously; can improve significantly the power saving rate of water pump system and can realize the protective function to system, having guaranteed the operation safely and reliably of system.
Accompanying drawing explanation
Fig. 1 is system connection diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is further described:
A constant flow intelligent electricity-saving protection control system based on double water pump, as shown in Figure 1, comprises constant-flow control device, gather transmission module, the first frequency variator, the first motor, operation water pump, the second frequency variator, the second motor, reserve pump, flow transducer Q and pressure transducer P, the first described frequency variator, the second frequency variator is connected with three-phase alternating-current supply, the first frequency variator, the first motor, operation water pump is connected successively, the second frequency variator, the second motor, reserve pump is connected successively, the output terminal of operation water pump and reserve pump is connected on outfall sewer road jointly, flow transducer and pressure transducer are installed on outfall sewer road for detection of the water flow on outfall sewer road and discharge pressure, described constant-flow control device is by controlling output unit, data processing unit, data-interface, communication module, man-machine interface connects and composes, wherein, data processing unit respectively with control output unit, data-interface, man-machine interface is connected, and data-interface is connected with communication module, described communication module is connected with collection transmission module, this collection transmission module is connected and is used for gathering three phase mains electric current with three phase mains, the source current that gathers transmission module collection outputs to data processing unit by communication module, data-interface, this communication module is also connected with Internet of things system, by Internet of things system, realizes the monitoring function to constant-flow control device, described data-interface is also connected with pressure transducer with the flow transducer on outfall sewer road, and send the flow of collection and pressure data to data processing unit, data processing unit is according to the data analysis that gathers transmission module, flow transducer and pressure transducer collection, and send control command to controlling output unit, the output control terminal mouth of described control output unit is connected with the second frequency variator with the first frequency variator respectively and controls the operation of the first frequency variator and the second frequency variator, guarantees that the water-outlet quantity of water pump keeps constant current state.In the utility model, frequency variator can adopt non-harmonic frequency converter and common frequency variator, no matter be which kind of frequency variator, all can realize above-mentioned functions.
Control principle of the present utility model is:
If the rated power of every water pump is P
n, rated flow is Q
n, rated pressure is H
n, while supposing a pump operation, reach rated power (being fully loaded with):
The power consuming during the power frequency operation of a water pump is: P
∑ 1=P
n
Flow is: Q
∑ 1=Q
n
If reserve pump is also put into operation, and the flow of the flow while keeping 2 pump frequency conversions operations during with 1 pump power frequency operation is identical.During the operation of 2 pump frequency conversions, the flow that every pump provides is Q
n÷ 2 ≈ 0.5Q
n; According to flow be directly proportional to frequency, cube relation being directly proportional of power and frequency, the frequency of okperation of every frequency conversion-type electricity saver is all 50 * 0.5=25Hz.The factors such as open circuit loss, resistance of pipe system, efficiency of ignoring water pump, the total output consuming during 2 pump frequency conversions operations is:
P
∑2＝2×0.5
3P
N≈0.25P
N
That is: when total output during 2 pump frequency conversion 25Hz operation is about 1 pump power frequency full load operation 0.25 times of power.
Power saving rate theoretical value=(P
n_ 0.25P
n)/P
n* 100%=75%
In sum, two water pumps (operation water pump and reserve pump) are used simultaneously, and according to two water pump operations, can significantly improve the power saving rate of water pump system.
It is emphasized that; embodiment described in the utility model is illustrative; rather than determinate; therefore the utility model comprises and is not limited to the embodiment described in embodiment; every other mode of executions that drawn according to the technical solution of the utility model by those skilled in the art, belong to the scope that the utility model is protected equally.
Claims (4)
1. the constant flow intelligent electricity-saving protection control system based on double water pump, comprises the first frequency variator, the first motor, operation water pump, the second frequency variator, the second motor and reserve pump, the first described frequency variator, the second frequency variator is connected with three-phase alternating-current supply, the first frequency variator, the first motor, operation water pump is connected successively, the second frequency variator, the second motor, reserve pump is connected successively, and the output terminal of operation water pump and reserve pump is connected on outfall sewer road jointly, it is characterized in that: also comprise constant-flow control device, flow transducer, pressure transducer and collection transmission module, the input end of this constant-flow control device is connected with pressure transducer with the flow transducer of installing on outfall sewer road respectively, the input end of this constant-flow control device is also connected with collection transmission module, this collection transmission module is connected with three-phase alternating-current supply for gathering the electric current of ac power supply, and be connected with the second frequency variator with the first frequency variator controlling run water pump and reserve pump of the output control terminal of this constant-flow control device moves simultaneously.
2. the constant flow intelligent electricity-saving protection control system based on double water pump according to claim 1; it is characterized in that: described constant-flow control device connects and composes by controlling output unit, data processing unit, data-interface, communication module, man-machine interface; data processing unit is connected with control output unit, data-interface, man-machine interface respectively; this data-interface is connected with flow transducer, pressure transducer and communication module; this communication module is connected with collection transmission module, and this control output unit is connected with the second frequency variator with the first frequency variator.
3. the constant flow intelligent electricity-saving protection control system based on double water pump according to claim 2, is characterized in that: described communication module is also connected with Internet of things system and by Internet of things system, constant-flow control device is controlled.
4. according to the constant flow intelligent electricity-saving protection control system based on double water pump described in claims 1 to 3 any one, it is characterized in that: the first described frequency variator and the second frequency variator are non-harmonic frequency converter or common frequency variator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320474250.XU CN203560067U (en) | 2013-08-05 | 2013-08-05 | Constant flow intelligent power-saving protection control system based on double water pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320474250.XU CN203560067U (en) | 2013-08-05 | 2013-08-05 | Constant flow intelligent power-saving protection control system based on double water pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203560067U true CN203560067U (en) | 2014-04-23 |
Family
ID=50509793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320474250.XU Expired - Fee Related CN203560067U (en) | 2013-08-05 | 2013-08-05 | Constant flow intelligent power-saving protection control system based on double water pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203560067U (en) |
-
2013
- 2013-08-05 CN CN201320474250.XU patent/CN203560067U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170601 Address after: Room 1, unit 6, building 65, No. two, science and technology road, Xi'an, Shaanxi, 710075 Patentee after: Shaanxi Laikesite Technology Development Co. Ltd. Address before: 710048 No. 22 East Ring Road, Shaanxi, Xi'an Patentee before: Li Qingqin |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20170805 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| DD01 | Delivery of document by public notice |
Addressee: Li Qingqin Document name: Notification of Approving Refund |
|
| DD01 | Delivery of document by public notice |