CN200946295Y - Small flow negative pressure-free water supply installation - Google Patents
Small flow negative pressure-free water supply installation Download PDFInfo
- Publication number
- CN200946295Y CN200946295Y CNU2006201391484U CN200620139148U CN200946295Y CN 200946295 Y CN200946295 Y CN 200946295Y CN U2006201391484 U CNU2006201391484 U CN U2006201391484U CN 200620139148 U CN200620139148 U CN 200620139148U CN 200946295 Y CN200946295 Y CN 200946295Y
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- CN
- China
- Prior art keywords
- water supply
- pump
- main pump
- pressure
- negative
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model provides a low flow rate negative-pressure-free water supply device, which comprises a stable flow compensator, a vacuum suppressor, a main pump, a small pump, a control cabinet and a pressure sensor. The stable flow compensator inlet pipe is directly connected with outdoor city pipe net. The main pump and the small pump are paralleled through the water absorption mother pipe that is connected with the compensator exit. The main pump and the small pump supply water at constant pressure through automatic frequency conversion. And disturbance-free automatic switching can be realized according to the system flow rate. Compared with present technology, said low flow rate negative-pressure-free water supply device has the advantages of high control accuracy and good energy-saving effect. The utility model can be widely used for second pressure water supply in living district where water consumption varies often.
Description
1, technical field
The utility model relates to a kind of secondary pressurizing feedwater equipment, specifically a kind of low discharge no-negative-pressure water supply equipment.
2, background technology
Existing no-negative-pressure water supply equipment adopts 2～5 same model water pumps mostly, do not consider low discharge water situation, even be provided with little pump, also be to adopt auto-pneumatic cylinder low discharge water supply pattern, system is provided with complexity, and living water use peak, residential quarters focuses mostly on early, in, three about 8 hours of periods of evening, and all the other time outputs are less, pump load is little, (it is generally acknowledged 〉=15Kw) time, can cause equipment energy dissipation when low discharge supplies water bigger, if main pump power is big although prior art employing frequency converter timing, but because governor impeller operational efficiency under low frequency is lower, thereby system energy consumption is wasted relatively when causing low discharge to supply water.
3, utility model content
The purpose of the present utility model provides the low discharge no-negative-pressure water supply equipment of less main pump of a kind of low discharge water supply consumption waste and the control of little pump automatic frequency-conversion constant voltage.
The technical scheme that its technical problem that solves the utility model adopts is: the low discharge no-negative-pressure water supply equipment, be by steady flow compensator, vacuum suppresser, main pump; little pump; switch board; compositions such as pressure sensor; establish vacuum suppresser and pressure sensor on the steady flow compensator; its water inlet pipe directly is connected in series with outdoor city planting ductwork; after the female pipe of the suction parallel connection of main pump and little pump; is connected with outfall sewer; outfall sewer installing pressure sensor; vacuum suppresser; main pump; little pump and pressure sensor connect switch board respectively; main pump and little pump adopt the automatic frequency-conversion constant pressure water supply;; main pump converting operation during big flow to satisfy water requirement; wherein main pump can be provided with 2～3; little pump can be provided with 1～2 with water spot by steady flow compensator outlet butt joint; and many main pumps circulation switchings when the water supply peak; along with reducing gradually of water supply volume; the frequency converter frequency when control system will detect separate unit main pump converting operation is reduced to " during the low discharge frequency " be generally 20～30Hz, system just stops the operation of frequency conversion main pump, automatically switches to little pump frequency conversion constant-pressure operation; When little pump frequency conversion moved, along with the increase gradually of water supply volume, frequency converter frequency raise gradually, and when frequency rose to 50Hz, system withdrawed from little pump frequency conversion operation automatically, enters the main pump constant pressure water supply.
4, description of drawings
Accompanying drawing 1 is the process structure schematic diagram (preferred embodiment) of low discharge no-negative-pressure water supply equipment.
Among the figure, 1, steady flow compensator, 2, vacuum suppresser, 3, main pump, 4, little pump, 5, the female pipe of suction, 6, water inlet pipe, 7, pressure sensor, 8, pressure sensor, 9, outfall sewer, 10, switch board, 11, use water spot.
5, the specific embodiment
Explain below doing with regard to 1 pair of low discharge no-negative-pressure water supply equipment of the present utility model of accompanying drawing below.
As shown in Figure 1; Small flow negative of the present utility model; By steady flow compensator (1); Vacuum suppresser (2); Main pump (3); Little pump (4); Switch board (10); Pressure sensor (7); (8) composition such as; Establish vacuum suppresser (2) and pressure sensor (7) on the steady flow compensator (1); Its water inlet pipe (6) directly is connected in series with outdoor city planting ductwork; After the female pipe of suction (5) parallel connection by steady flow compensator (1) outlet docking of main pump (3) and little pump (4); Be connected with outfall sewer (9); Outfall sewer (9) installing pressure sensor (8); Vacuum suppresser (2); Main pump (3); Little pump (4) and pressure sensor (7); (8) connect respectively switch board (10); Main pump (3) and little pump (4) adopt the automatic frequency-conversion constant pressure water supply; To satisfy the water requirement with water spot (11); Main pump (3) converting operation during big flow; And 2 main pumps (3) cyclic switching when the water supply peak; Along with reducing gradually of water consumption; Frequency converter frequency when control system will detect separate unit main pump (3) converting operation is reduced to " during the low discharge frequency "; System just stops frequency conversion main pump (3) operation, automatically switches to the operation of little pump (4) frequency-changing pressure stabilizing; When little pump (4) converting operation, along with the increase gradually of water supply volume, frequency converter frequency raises gradually, and when frequency rose to 50Hz, system withdrawed from little pump (4) converting operation automatically, entered main pump (3) constant pressure water supply.
Low discharge no-negative-pressure water supply equipment of the present utility model adopts main pump and little pump automatic frequency-conversion constant-pressure operation, and can realize no disturbance automatic switchover according to the flow system flow size, converting operation main pump when having avoided low discharge to supply water and the energy consumption that causes is wasted relatively, therefore, more existing no-negative-pressure water supply equipment technology is compared, have characteristics such as equipment control accuracy height, good energy-conserving effect, can economize on electricity more than 20% than the existing no-negative-pressure water supply equipment that does not drop into a little pump converting operation main pump.
Claims (2)
1, low discharge no-negative-pressure water supply equipment, form by steady flow compensator, vacuum suppresser, main pump, little pump, switch board, pressure sensor etc., it is characterized in that: the steady flow compensator water inlet pipe directly is connected in series with outdoor city planting ductwork, and main pump and little pump are in parallel by the female pipe of suction of steady flow compensator outlet butt joint.
2, low discharge no-negative-pressure water supply equipment according to claim 1 is characterized in that: main pump and little pump adopt the automatic frequency-conversion constant pressure water supply, and main pump can be provided with 2～3, and little pump can be provided with 1～2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201391484U CN200946295Y (en) | 2006-09-08 | 2006-09-08 | Small flow negative pressure-free water supply installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201391484U CN200946295Y (en) | 2006-09-08 | 2006-09-08 | Small flow negative pressure-free water supply installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200946295Y true CN200946295Y (en) | 2007-09-12 |
Family
ID=38733355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201391484U Expired - Fee Related CN200946295Y (en) | 2006-09-08 | 2006-09-08 | Small flow negative pressure-free water supply installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200946295Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691334A (en) * | 2012-05-25 | 2012-09-26 | 天津大学建筑设计研究院 | Method for determining switching time between constant-pressure water supply and air-pressure water supply of joined water supply system |
| CN104153426A (en) * | 2014-08-19 | 2014-11-19 | 安徽金科橡塑制品有限公司 | Energy-saving water supply system |
| CN106320452A (en) * | 2016-08-15 | 2017-01-11 | 中国华西企业有限公司 | Automatic-control water supply system and automatic-control water supply method |
-
2006
- 2006-09-08 CN CNU2006201391484U patent/CN200946295Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691334A (en) * | 2012-05-25 | 2012-09-26 | 天津大学建筑设计研究院 | Method for determining switching time between constant-pressure water supply and air-pressure water supply of joined water supply system |
| CN102691334B (en) * | 2012-05-25 | 2013-12-11 | 天津大学建筑设计研究院 | Method for determining switching time between constant-pressure water supply and air-pressure water supply of joined water supply system |
| CN104153426A (en) * | 2014-08-19 | 2014-11-19 | 安徽金科橡塑制品有限公司 | Energy-saving water supply system |
| CN106320452A (en) * | 2016-08-15 | 2017-01-11 | 中国华西企业有限公司 | Automatic-control water supply system and automatic-control water supply method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070912 |