CN209760358U - Full-flow full-frequency conversion water supply equipment - Google Patents
Full-flow full-frequency conversion water supply equipment Download PDFInfo
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- CN209760358U CN209760358U CN201920354370.3U CN201920354370U CN209760358U CN 209760358 U CN209760358 U CN 209760358U CN 201920354370 U CN201920354370 U CN 201920354370U CN 209760358 U CN209760358 U CN 209760358U
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Abstract
An aspect of the utility model is to provide a full variable frequency water supply equipment of full flow, include at least: the system comprises a water supply pump set, a water outlet flow meter and a digital control water pump special module; the water supply pump group includes: the main working pump, the standby pump, the first flow regulating pump, the second flow regulating pump and the … … Nth flow regulating pump.
Description
Technical Field
The utility model belongs to the technical field of the secondary water supply, concretely relates to water supply equipment.
Background
The water pump of the traditional secondary water supply equipment is equipped in a mode of one-by-one or one-by-multiple-by-one, the technical parameters of the standby pump and the working pump are completely the same, and the standby pump is started to work under the condition that the working pump is damaged or abnormal, so that the defect that the water pump cannot always work in a high-efficiency area under the condition that the water outlet flow rate is continuously changed is overcome. The curve of the working efficiency and the flow rate of the conventional water pump and the curve of the power and the flow rate are shown in fig. 1: in the figure: the curve 1 is a curve of the relation between efficiency and flow, the abscissa of the curve is flow, and the ordinate of the curve is the working efficiency of the water pump; curve 2 is a curve of the relationship between power and flow rate, with the abscissa representing flow rate and the ordinate representing power. The rated flow of the water pump selected in the figure is 30m3H and rated power of 11 kw. As can be seen from fig. 1: when the actual flow rate is at a certain specific flow rate Q1To rated flow QForehead (forehead)In the middle, the water pump has higher efficiency and is positioned in a high-efficiency area; when the actual flow is less than Q1In time, the efficiency of the water pump is significantly reduced, and the water pump is in a low efficiency zone. Wherein Q is1The corresponding minimum flow rate when the pump is operated in the high-efficiency area. In real life, the difference between the water consumption of the water peak and the water consumption of the water valley is obvious, and the water pump cannot work in a high-efficiency area all the time, so that energy waste is caused.
disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, it is an aspect of the present invention to provide a full-flow full-frequency water supply device for solving the above-mentioned problems in the prior art.
The full-flow full-frequency conversion water supply equipment at least comprises: the system comprises a water supply pump set, a water outlet flow meter and a digital control water pump special module;
The water supply pump group includes: the system comprises a main working pump, a standby pump, a first flow regulating pump, a second flow regulating pump and an … … Nth flow regulating pump; wherein N is a positive integer;
The technical parameters of the main working pump, the standby pump and each flow regulating pump have the following relations:
The technical parameters of the main working pump and the standby pump are the same;
If the rated flow of the main working pump is Qforehead (forehead)the lift is H, the minimum flow corresponding to the efficient area of the efficiency flow curve is Q1，Q1corresponding to a frequency of f1；
The lift of the first flow rate adjusting pump is H, and the rated flow rate Q is1 transferring the volume＝Q1＝QForehead (forehead)(f1/fWorker's tool) Wherein f isWorker's toolis the power frequency; the lift of the second flow regulating pump is H, and the rated flow Q2 transferring the volume＝Q1 tone＝Q1 transferring the volume(f1 tone/fWorker's tool) (ii) a Wherein f isWorker's toolAt power frequency, f1 toneMinimum flow Q corresponding to the efficient area of the efficiency and flow curve of the first flow regulating pump1 toneThe corresponding frequency; … … and so on: the Nth flow regulating pump has a lift of H and a rated flow QN modulation of volume＝QN-1 tone＝QN-1 quota of allotment(fN-1 tone/fWorker's tool) (ii) a Wherein Q isn-1 amountFor regulating the rated flow of the pump for the N-1 th flow, fWorker's toolAt power frequency, fN-1 toneThe lowest flow Q corresponding to the high-efficiency area of the efficiency and flow curve of the N-1 flow regulating pumpn-1 toneThe corresponding frequency;
The main working pump, the standby pump and each flow regulating pump are connected with the special module of the digital control water pump through signal lines;
A water outlet flow meter is arranged on a water outlet pipeline of the water supply pump set; the water outlet flow meter is connected with the special module of the digital control water pump through a signal line.
Preferably, the main working pump, the backup pump and each flow regulating pump are connected in parallel.
Preferably, the number of flow regulating pumps is 1 to 3, i.e. N equals 1, 2 or 3.
Preferably, a pressure stabilizing air tank is arranged on the water outlet pipeline of the water supply pump set.
Full flow full frequency conversion water supply equipment water supply pump package's operation as follows:
1. when the main working pump, the standby pump and the flow pumps are in a good state: the main working pump and the standby pump operate according to a set interval time wheel value; the main working pump or the standby pump and each flow regulating pump are switched to operate according to the following modes:
When Q is1＜QGo out≤QForehead (forehead)When the system is used, the main working pump or the standby pump works, and each flow regulating pump does not work;
When Q is1 tone＜QGo out≤Q1When the flow rate adjusting pump works, the main working pump or the standby pump and other flow rate adjusting pumps do not work;
When Q is2 tone＜Qgo out≤Q1 tonewhen the flow rate adjusting pump works, the main working pump or the standby pump and other flow rate adjusting pumps do not work;
When Q is3 tone＜QGo out≤Q2 toneWhen the flow rate of the first flow rate adjusting pump is higher than that of the second flow rate adjusting pump, the third flow rate adjusting pump works, and the main working pump or the standby pump and other flow rate adjusting pumps do not work;
……
By analogy, when QN tone＜QGo out≤QN-1 toneWhen the flow rate adjusting pump works, the main working pump or the standby pump and other flow rate adjusting pumps do not work;
Wherein Q isGo outFor the outlet flow of the water supply pump unit, Q1The minimum flow, Q, corresponding to the efficient area of the efficiency flow curve of the main working pump or the standby pumpForehead (forehead)Rated flow, Q, of the main working pump or of the auxiliary pump1 tone、Q2 tone、……QN tonethe flow rates are respectively the lowest flow rates corresponding to the efficient areas of the efficiency and flow rate curves of the first flow rate regulating pump, the second flow rate regulating pump and the … … Nth flow rate regulating pump;
When the pump is switched, a time delay switching mode is adopted, namely after the rear pump is started, the front pump stops running after a certain buffer time T; the water backflow phenomenon caused by the pressure cliff reduction caused by the rapid switching between the pumps is avoided.
2. When one of the main working pump and the standby pump fails, the two pumps are not switched in turn, and the switching operation mode between the working main pump or the standby pump in the normal working state and each flow regulating pump is the same as the first mode;
3. When any flow regulating pump fails, the system can cross the failed pump to switch and operate, namely when the first flow regulating pump fails, the main working pump or the standby pump crosses the first flow regulating pump to directly switch to the second flow regulating pump; when the second flow regulating pump fails, the first flow regulating pump is directly switched to a third flow regulating pump over the second flow regulating pump; … … when the Nth-1 flow regulating pump fails, the Nth-2 flow regulating pump is switched directly to the Nth flow regulating pump over the Nth-1 flow regulating pump.
Preferably, the buffering time T is 20 to 30 seconds.
The utility model discloses a full variable frequency water supply equipment of full flow and application method thereof can make the water pump be in the high efficiency district all the time and carry out work, have obvious energy-conserving effect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention, in fig. 1: 1, a pressure stabilizing gas tank, 2, a pressure sensor, 3, a water outlet valve, 4, a water outlet flow meter, 5, a special module for a digital control water pump, 6, a standby pump, 7, a first flow regulating pump, 8, a second flow regulating pump, 9, a manual butterfly valve, 10, a main working pump, 11, a flexible head and 12 integrated check valve;
Fig. 2 is a flow and efficiency curve of each pump of the working pump group of the present invention, wherein the abscissa represents flow Q and the ordinate represents efficiency μ; in the figure: the curve A is a flow and efficiency curve of the main working pump or the standby pump; curve B is a flow and efficiency curve of the first flow regulating pump; curve C is the flow, efficiency curve of the second flow regulating pump.
Detailed Description
the following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Example 1: as shown in fig. 1 and 2;
The full-flow full-frequency conversion water supply equipment at least comprises: a water supply pump set, a water outlet flow meter 4 and a digital control water pump special module 5;
the water supply pump group includes: a main working pump 10, a standby pump 6, a first flow regulating pump 7 and a second flow regulating pump 8;
The technical parameters of the main working pump 10, the standby pump 6 and the flow regulating pumps have the following relations:
The technical parameters of the main working pump 10 and the standby pump 6 are the same;
If the rated flow of the main working pump 10 is QForehead (forehead)＝30m3H, the lift is H60 m, and the minimum flow corresponding to the efficient area of the efficiency flow curve is Q1，Q1Corresponding to a frequency of f138 hz;
The first flow rate regulating pump 7 selects the technical parameters as follows: head H60 m, rated flow Q1 transferring the volume＝Q1＝QForehead (forehead)(f1/fWorker's tool)，＝30(38/50)＝22.8m3H; the second flow rate adjusting pump 8 has a head of H and a rated flow rate Q2 transferring the volume＝Q1 tone＝Q1 transferring the volume(f1 tone/fWorker's tool)＝22.8(38/50)＝17.328m3H; wherein f isworker's toolIs power frequency of 50 Hz, f1 toneMinimum flow Q corresponding to the efficient area of the efficiency and flow curve of the first flow regulating pump1 toneThe corresponding frequency, in this example 38 hz, is chosen.
The main working pump 10, the standby pump 6 and each flow regulating pump are connected with the digital control water pump special module 5 through signal lines;
A water outlet flow meter 4 is arranged on a water outlet pipeline of the water supply pump set; the water outlet flow meter 4 is connected with the digital control water pump special module 5 through a signal line;
The main working pump 10, the backup pump 6, the first flow rate regulating pump 7 and the second flow rate regulating pump 8 are connected in parallel.
And a water outlet pipeline of the water supply pump set is provided with a pressure stabilizing gas tank 1.
The utility model discloses a full flow full frequency conversion water supply equipment's application method, the water supply pump package's of equipment operation mode as follows:
1. when the main working pump 10, the standby pump 6 and the flow pumps are in a good state: the main working pump 10 and the standby pump 6 operate according to a set interval time value; the main working pump 10 or the standby pump 6 and each flow regulating pump are switched to operate according to the following modes:
When Q is1＜QGo out≤Qforehead (forehead)When the flow rate adjusting pump works, the main working pump 10 or the standby pump 6 works, and each flow rate adjusting pump does not work;
When Q is1 tone＜QGo out≤Q1When the flow rate adjusting pump 7 works, the main working pump 10 or the standby pump 6 and other flow rate adjusting pumps do not work;
When Q is2 tone＜Qgo out≤Q1 toneWhen the second flow regulating pump works, the main working pump 10 or the standby pump 6 and other flow regulating pumps do not work;
when Q is3 tone＜QGo out≤Q2 toneWhen the third flow rate adjusting pump works, the main working pump 10 or the standby pump 6 and other flow rate adjusting pumps do not work;
Wherein Q isGo outfor the outlet flow of the water supply pump unit, Q1The minimum flow, Q, corresponding to the efficient area of the efficiency flow curve of the main working pump or the standby pumpforehead (forehead)Rated flow, Q, of the main working pump or of the auxiliary pump1 tone、Q2 toneThe minimum flow rates are respectively corresponding to the first flow regulating pump, the second flow regulating pump and the efficiency flow curve high-efficiency area;
When the pump is switched, a time delay switching mode is adopted, namely after the rear pump is started, the front pump stops running after 25 seconds of buffer time;
2. when one of the main working pump 10 and the backup pump 6 fails, the switching between the two pumps is not performed, and the switching operation mode between the working main pump 10 or the backup pump 6 in the normal working state and each flow regulating pump is the same as the first mode;
3. When any one of the flow rate regulation pumps fails, the system can be switched to operate over the failed pump, that is, when the first flow rate regulation pump 7 fails, the main working pump 10 or the backup pump 6 is directly switched over to the second flow rate regulation pump 8 over the first flow rate regulation pump.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (4)
1. Full flow full frequency conversion water supply equipment, its characterized in that includes at least: the system comprises a water supply pump set, a water outlet flow meter and a digital control water pump special module;
The water supply pump group includes: the system comprises a main working pump, a standby pump, a first flow regulating pump, a second flow regulating pump and an … … Nth flow regulating pump; wherein N is a positive integer;
The technical parameters of the main working pump, the standby pump and each flow regulating pump have the following relations:
the technical parameters of the main working pump and the standby pump are the same;
if the rated flow of the main working pump is QForehead (forehead)The lift is H, the minimum flow corresponding to the efficient area of the efficiency flow curve is Q1，Q1Corresponding to a frequency of f1；
The lift of the first flow rate adjusting pump is H, and the rated flow rate Q is1 transferring the volume＝Q1＝QForehead (forehead)(f1/fWorker's tool) Wherein f isWorker's toolis the power frequency; the lift of the second flow regulating pump is H, and the rated flow Q2 transferring the volume＝Q1 tone＝Q1 transferring the volume(f1 tone/fWorker's tool) (ii) a Wherein f isWorker's toolat power frequency, f1 toneMinimum flow Q corresponding to the efficient area of the efficiency and flow curve of the first flow regulating pump1 toneThe corresponding frequency; … … and so on: the Nth flow regulating pump has a lift of H and a rated flow QN modulation of volume＝QN-1 tone＝QN-1 quota of allotment(fn-1 tone/fworker's tool) (ii) a Wherein Q isn-1 amountIs as followsRated flow of N-1 flow regulating pump, fworker's toolAt power frequency, fN-1 toneThe lowest flow Q corresponding to the high-efficiency area of the efficiency and flow curve of the N-1 flow regulating pumpN-1 toneThe corresponding frequency;
the main working pump, the standby pump and each flow regulating pump are connected with the special module of the digital control water pump through signal lines;
A water outlet flow meter is arranged on a water outlet pipeline of the water supply pump set; the water outlet flow meter is connected with the special module of the digital control water pump through a signal line.
2. the full-flow full-variable frequency water supply equipment according to claim 1, characterized in that: the main working pump, the standby pump and each flow regulating pump are connected in parallel.
3. the full-flow full-variable frequency water supply equipment according to claim 1, characterized in that: the number of flow regulating pumps is 1 to 3, i.e. N equals 1, 2 or 3.
4. The full-flow full-variable frequency water supply equipment according to claim 1, characterized in that: and a water outlet pipeline of the water supply pump set is provided with a pressure stabilizing gas tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920354370.3U CN209760358U (en) | 2019-03-20 | 2019-03-20 | Full-flow full-frequency conversion water supply equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920354370.3U CN209760358U (en) | 2019-03-20 | 2019-03-20 | Full-flow full-frequency conversion water supply equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109778958A (en) * | 2019-03-20 | 2019-05-21 | 山东科源供排水设备工程有限公司 | The application method of the full frequency-changing water supply device of full flow and the equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109778958A (en) * | 2019-03-20 | 2019-05-21 | 山东科源供排水设备工程有限公司 | The application method of the full frequency-changing water supply device of full flow and the equipment |
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