CN104846940A - Dual-frequency-converting pipe network pressure-superposed steady-flow water supply equipment with big and small pumps - Google Patents
Dual-frequency-converting pipe network pressure-superposed steady-flow water supply equipment with big and small pumps Download PDFInfo
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- CN104846940A CN104846940A CN201410566754.3A CN201410566754A CN104846940A CN 104846940 A CN104846940 A CN 104846940A CN 201410566754 A CN201410566754 A CN 201410566754A CN 104846940 A CN104846940 A CN 104846940A
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Abstract
The invention discloses dual-frequency-converting pipe network pressure-superposed steady-flow water supply equipment with big and small pumps. The dual-frequency-converting pipe network pressure-superposed steady-flow water supply equipment mainly comprises a no-negative-pressure pipe network pressure-superposed steady-flow compensation device, a big pump unit, a big frequency converter, a small pump unit, a small frequency converter, a flow detection device, a control cabinet and a PC cabinet, wherein the water outlet of the no-negative-pressure pipe network pressure-superposed steady-flow compensation device is connected with the big pump unit and the small pump unit which are arranged in parallel; the big pump unit is connected with the big frequency converter in a matched manner; the small pump unit is connected with the small frequency converter in a matched manner; and during operation, when the detected water outlet flow rate reaches the set small-flow range, the control cabinet automatically switches to the variable frequency operation of the small pump unit so as to take the energy-saving and electricity-saving effects. The dual-frequency-converting pipe network pressure-superposed steady-flow water supply equipment has the benefits that as the big pump unit and the small pump unit are mutually switched according to different flow rate ranges to achieve direct tandem no-negative-pressure pipe network pressure-superposed steady-flow water supply, the problem of energy waste caused by the reason that the big pump unit working in a small-flow range deviates from the high-efficiency zone is avoided, and energy saving and cost reduction are further facilitated.
Description
Technical field
The present invention relates to secondary water-supply technical field, specifically the two frequency conversion pipe network pressure-superposed steady-flow water supply facilities of a kind of size pump.
Background technology
Pipe network pressure-superposed secondary water-supply can utilize water inlet pipe pressure energy-conservation, current water distribution system flushing often adopts the pump variable frequency of single model to configure, because be conducive to like this implementing and reducing costs, but in the domestic water system of water supply volume vary within wide limits, the efficient district flow configuring single model water pump can not cover the excursion of water supply volume completely, some is less than 50%, such water pump most of the time by departing from its efficient district, low discharge time run, there is energy consumption waste, and reduce the water pump life-span.
Summary of the invention
The object of the present invention is to provide a kind ofly to configure rationally, energy saving in running and the stable two frequency conversion pipe network pressure-superposed steady-flow water supply facilities of size pump of pressure of supply water.
The technical solution adopted for the present invention to solve the technical problems is: the two frequency conversion pipe network pressure-superposed steady-flow water supply facilities of size pump is primarily of without negative pressure pipe network pressure-superposed steady-flow compensation arrangement, large pump assembly, large frequency converter, little pump assembly, little frequency converter, flow detector, switch board becomes with PC group, describedly compress into water pipe with tap water be connected without the water inlet of negative pressure pipe network pressure-superposed steady-flow compensation arrangement, be connected with the large pump assembly be arranged in parallel and little pump assembly without the water outlet of negative pressure pipe network pressure-superposed steady-flow compensation arrangement, pressure-detecting device is being installed without negative pressure pipe network pressure-superposed steady-flow compensation arrangement, without negative pressure control apparatus and Level monitor, the negative pressure produced because inhaling journey during in order to eliminate large pump assembly or the work of little pump assembly affects, realize directly being connected in series without negative pressure, it is supporting that large pump assembly connects large frequency converter, it is supporting that little pump assembly connects little frequency converter, large pump assembly is connected feed pipe water outlet respectively with little pump assembly, be connected with water spot pipe network by feed pipe again, overpressure protection apparatus is provided with at feed pipe, pressure detecting table and flow detector.Described large frequency converter, little frequency converter, pressure-detecting device, to be connected with switch board with line respectively with flow detector without negative pressure control apparatus, Level monitor, overpressure protection apparatus, pressure detecting table; switch board also connects PC cabinet; and being provided with monitor-interface at PC cabinet, switch board is connected power supply respectively with PC cabinet.
Action principle of the present invention is: power supply is switch board and PC cabinet distribution, PC cabinet is used for monitoring, show, store and inquire about each data message, switch board is used for realizing automatic control function, water flow according to flow detector automatically switches to large pump assembly and little pump assembly, when detecting that discharge reaches the low discharge scope of setting, automatically switch to little pump assembly converting operation by switch board, reach economizing on energy and electricity effect.
The invention has the beneficial effects as follows, supplying water without negative pressure, pipe network pressure-superposed current stabilization of the direct serial connection that the present invention adopts large pump assembly and little pump assembly mutually to switch according to different flow scope, avoid large pump assembly and run the energy consumption waste problem departing from efficient district in low discharge scope, be conducive to energy-conservation and reduce costs further, and adopt the pressure stability of two variable frequency control, and expand the higher efficiency range of Flow-rate adjustment, especially in the life secondary water supply system of water supply volume vary within wide limits, application has good energy-saving effect.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
In figure, 1, tap water compresses into water pipe, 2, without negative pressure pipe network pressure-superposed steady-flow compensation arrangement, 3, large pump assembly; 4, large frequency converter, 5, little pump assembly, 6, little frequency converter; 7, feed pipe, 8, use water spot pipe network, 9, pressure-detecting device; 10, without negative pressure control apparatus, 11, Level monitor, 12, overpressure protection apparatus; 13, pressure detecting table, 14, flow detector, 15, switch board; 16, PC cabinet, 17, monitor-interface, 18, power supply.
Detailed description of the invention
With regard to accompanying drawing 1, the two frequency conversion pipe network pressure-superposed steady-flow water supply facilities of size pump of the present invention is described in detail below below.
As shown in Figure 1, the two frequency conversion pipe network pressure-superposed steady-flow water supply facilities of size pump of the present invention is primarily of without negative pressure pipe network pressure-superposed steady-flow compensation arrangement 2, large pump assembly 3, large frequency converter 4, little pump assembly 5, little frequency converter 6, flow detector 14, switch board 15 and PC cabinet 16 form, describedly compress into water pipe 1 with tap water be connected without the water inlet of negative pressure pipe network pressure-superposed steady-flow compensation arrangement 2, be connected with the large pump assembly 3 be arranged in parallel and little pump assembly 5 without the water outlet of negative pressure pipe network pressure-superposed steady-flow compensation arrangement 2, pressure-detecting device 9 is being installed without negative pressure pipe network pressure-superposed steady-flow compensation arrangement 2, without negative pressure control apparatus 10 and Level monitor 11, in order to eliminate when large pump assembly 3 or little pump assembly 5 work because inhaling the negative pressure impact that journey produces, realize directly being connected in series without negative pressure, it is supporting that large pump assembly 3 connects large frequency converter 4, it is supporting that little pump assembly 5 connects little frequency converter 6, large pump assembly 3 is connected feed pipe 7 water outlet respectively with little pump assembly 5, be connected with water spot pipe network 8 by feed pipe 7 again, overpressure protection apparatus 12 is provided with at feed pipe 7, pressure detecting table 13 and flow detector 14.Described large frequency converter 4, little frequency converter 6, pressure-detecting device 9, to be connected with switch board 15 with line respectively without negative pressure control apparatus 10, Level monitor 11, overpressure protection apparatus 12, pressure detecting table 13 and flow detector 14; switch board 15 also connects PC cabinet 16; and being provided with monitor-interface 17 at PC cabinet 16, switch board 15 is connected power supply 18 respectively with PC cabinet 16.
Action principle of the present invention is: power supply 18 is switch board 15 and PC cabinet 16 distribution, PC cabinet 16 is for monitoring, showing, store and inquire about each data message, switch board 15 is for realizing automatic control function, water flow according to flow detector 14 automatically switches to large pump assembly 3 and little pump assembly 5, when detecting that discharge reaches the low discharge scope of setting, automatically switch to little pump assembly 5 converting operation by switch board 15, reach economizing on energy and electricity effect.
Claims (3)
1. the two frequency conversion pipe network pressure-superposed steady-flow water supply facilities of a size pump is primarily of without negative pressure pipe network pressure-superposed steady-flow compensation arrangement, large pump assembly, large frequency converter, little pump assembly, little frequency converter, flow detector, switch board becomes with PC group, it is characterized in that, be connected with the large pump assembly be arranged in parallel and little pump assembly without the water outlet of negative pressure pipe network pressure-superposed steady-flow compensation arrangement, pressure-detecting device is being installed without negative pressure pipe network pressure-superposed steady-flow compensation arrangement, without negative pressure control apparatus and Level monitor, it is supporting that large pump assembly connects large frequency converter, it is supporting that little pump assembly connects little frequency converter, large pump assembly is connected feed pipe water outlet respectively with little pump assembly, be connected with water spot pipe network by feed pipe again, overpressure protection apparatus is provided with at feed pipe, pressure detecting table and flow detector.
2. the two frequency conversion pipe network pressure-superposed steady-flow water supply facilities of size pump according to claim 1; it is characterized in that, described large frequency converter, little frequency converter, pressure-detecting device, to be connected with switch board with line respectively with flow detector without negative pressure control apparatus, Level monitor, overpressure protection apparatus, pressure detecting table.
3. the two frequency conversion pipe network pressure-superposed steady-flow water supply facilities of size pump according to claim 1, it is characterized in that, switch board also connects PC cabinet, and is provided with monitor-interface at PC cabinet, and switch board is connected power supply respectively with PC cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410566754.3A CN104846940A (en) | 2014-10-23 | 2014-10-23 | Dual-frequency-converting pipe network pressure-superposed steady-flow water supply equipment with big and small pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410566754.3A CN104846940A (en) | 2014-10-23 | 2014-10-23 | Dual-frequency-converting pipe network pressure-superposed steady-flow water supply equipment with big and small pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104846940A true CN104846940A (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410566754.3A Pending CN104846940A (en) | 2014-10-23 | 2014-10-23 | Dual-frequency-converting pipe network pressure-superposed steady-flow water supply equipment with big and small pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104846940A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653304A (en) * | 2018-11-26 | 2019-04-19 | 安徽舜禹水务股份有限公司 | A kind of auxiliary pump start-up and shut-down control method of flow auxiliary control secondary water-supply |
-
2014
- 2014-10-23 CN CN201410566754.3A patent/CN104846940A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653304A (en) * | 2018-11-26 | 2019-04-19 | 安徽舜禹水务股份有限公司 | A kind of auxiliary pump start-up and shut-down control method of flow auxiliary control secondary water-supply |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150819 |