CN203716215U - Large and small pump double-frequency-conversion constant pressure water supply device - Google Patents
Large and small pump double-frequency-conversion constant pressure water supply device Download PDFInfo
- Publication number
- CN203716215U CN203716215U CN201320847385.6U CN201320847385U CN203716215U CN 203716215 U CN203716215 U CN 203716215U CN 201320847385 U CN201320847385 U CN 201320847385U CN 203716215 U CN203716215 U CN 203716215U
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- Prior art keywords
- pump
- water supply
- frequency converter
- frequency
- small pump
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- Expired - Fee Related
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Abstract
The utility model discloses a large and small pump double-frequency-conversion constant pressure water supply device, which mainly comprises a large pump, a small pump, a large pump frequency converter, a small pump frequency converter, a control cabinet, a pressure detection instrument, and a water supply pipe network, wherein the large pump is in wiring connection with the large pump frequency converter, and the small pump is in wiring connection with the small pump frequency converter; the large pump frequency converter and the small pump frequency converter are respectively wired to the control cabinet, and the pressure detection instrument is arranged on the water supply pipe network and is wired to the control cabinet. The large and small pump double-frequency-conversion constant pressure water supply device provided by the utility model has the beneficial effects that the large pump and the small pump respectively implement frequency conversion constant pressure water supply, the ultra-high pressure caused when the large pump softly starts to be switched into working frequency is avoided, and the frequency of the large pump frequency converter can be effectively reduced when the small pump operates at low frequency, so that the large pump and the small pump work in a high efficiency field, and thus the effects of reducing energy consumption, eliminating pressure fluctuation, avoiding frequent starting and stopping and the like are realized.
Description
Technical field
The utility model relates to pressurization hydrotechny field, specifically the two constant pressure water supply devices of a kind of big or small pump.
Background technology
At present, the big or small pump of the pressurization water system on market is in conjunction with constant pressure water supply device, general is all to adopt little pump frequency conversion, large pump soft start to be switched to the mode of power frequency operation, this will cause large pump in start-up course, easily to occur the phenomenon such as pressure superelevation and little pump low-frequency operation or large pump frequent start-stop, affect normal water supply.
Utility model content
In view of the deficiency that above-mentioned prior art exists, the utility model provides a kind of big or small pump two constant pressure water supply devices, can avoid the pressure oscillation in large pump handoff procedure, and effectively solve the problem of little pump low-frequency operation.
The utility model solves the technical scheme that its technical problem adopts: the two constant pressure water supply devices of big or small pump are mainly by large pump, little pump, large pump frequency converter, little pump frequency converter, switch board, pressure instrumentation and water supply network composition, large pump connects with frequency converter wiring with large pump, little pump and little pump connect with frequency converter wiring, large pump is wired to respectively switch board with frequency converter and little pump frequency converter, pressure instrumentation is equiped with on water supply network, and be wired to switch board, pressure instrumentation gathers the hydraulic signal of water supply network, and by signal feedback to switch board, little pump is implemented frequency conversion and unvarying pressure control by little pump with frequency converter, large pump is implemented frequency conversion and unvarying pressure control by large pump with frequency converter, large pump and little parallel connection of pumps are supplied water, and the force value of setting according to switch board is separately implemented constant pressure water supply, reach the water supply effect of pressure stability, and be conducive to energy-conservation.
The beneficial effects of the utility model are, the utility model adopts large pump, little pump to implement separately constant pressure water supply, pressure superelevation while avoiding large pump soft start to be switched to power frequency, in the time of little pump low frequency, can reduce large pump frequency converter frequency by synergistic, thereby make large pump and little pump all be operated in efficient district, thus reach reduce energy consumption, eliminate pressure oscillation and avoid frequent start-stop texts.
Brief description of the drawings
Accompanying drawing 1 is structural representation of the present utility model.
In figure, 1, switch board, 2, large pump frequency converter, 3, pump greatly, 4, little pump frequency converter, 5, little pump, 6, pressure instrumentation, 7, water supply network.
Detailed description of the invention
With regard to accompanying drawing 1, the two constant pressure water supply devices of big or small pump of the present utility model are done to following detailed explanation below.
As shown in Figure 1, the two constant pressure water supply devices of big or small pump of the present utility model are mainly by large pump 3, little pump 5, large frequency converter 2 for pump, little frequency converter 4 for pump, switch board 1, pressure instrumentation 6 and water supply network 7 form, large pump 3 connects with frequency converter 2 wiring with large pump, little pump 5 connects with frequency converter 4 wiring with little pump, large pump is wired to respectively switch board 1 with frequency converter 2 and little pump frequency converter 4, pressure instrumentation 6 is equiped with on water supply network 7, and be wired to switch board 1, pressure instrumentation 6 gathers the hydraulic signal of water supply network 7, and by signal feedback to switch board 1, little pump 5 is implemented frequency conversion and unvarying pressure control by little pump with frequency converter 4, large pump 3 is implemented frequency conversion and unvarying pressure control by large pump with frequency converter 2, large pump 3 and little pump 5 parallel pumpings, and the force value of setting according to switch board 1 is separately implemented constant pressure water supply, reach the water supply effect of pressure stability, and be conducive to energy-conservation.
Claims (1)
- The two constant pressure water supply devices of a big or small pump mainly by large pump, little pump, large frequency converter for pump, little for pump frequency converter, switch board, pressure instrumentation and water supply network form, it is characterized in that, large pump connects with frequency converter wiring with large pump; little pump and little pump connect with frequency converter wiring; large pump is wired to respectively switch board with frequency converter and little pump frequency converter; pressure instrumentation is equiped with on water supply network, and is wired to switch board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320847385.6U CN203716215U (en) | 2013-12-21 | 2013-12-21 | Large and small pump double-frequency-conversion constant pressure water supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320847385.6U CN203716215U (en) | 2013-12-21 | 2013-12-21 | Large and small pump double-frequency-conversion constant pressure water supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203716215U true CN203716215U (en) | 2014-07-16 |
Family
ID=51155384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320847385.6U Expired - Fee Related CN203716215U (en) | 2013-12-21 | 2013-12-21 | Large and small pump double-frequency-conversion constant pressure water supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203716215U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989478A (en) * | 2017-02-24 | 2017-07-28 | 深圳达实智能股份有限公司 | Applied to the isobaric method for controlling frequency conversion of hospital's size chilled water pump in parallel and device |
-
2013
- 2013-12-21 CN CN201320847385.6U patent/CN203716215U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989478A (en) * | 2017-02-24 | 2017-07-28 | 深圳达实智能股份有限公司 | Applied to the isobaric method for controlling frequency conversion of hospital's size chilled water pump in parallel and device |
| CN106989478B (en) * | 2017-02-24 | 2020-02-14 | 深圳达实智能股份有限公司 | Isobaric frequency conversion control method and device applied to large and small parallel chilled water pumps in hospital |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20141221 |
|
| EXPY | Termination of patent right or utility model |