CN201588252U - Non-negative pressure water supplying device - Google Patents
Non-negative pressure water supplying device Download PDFInfo
- Publication number
- CN201588252U CN201588252U CN2009200705806U CN200920070580U CN201588252U CN 201588252 U CN201588252 U CN 201588252U CN 2009200705806 U CN2009200705806 U CN 2009200705806U CN 200920070580 U CN200920070580 U CN 200920070580U CN 201588252 U CN201588252 U CN 201588252U
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- Prior art keywords
- pump
- frequency conversion
- water
- house steward
- voltage stabilizing
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- Expired - Fee Related
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Abstract
The utility model discloses a non-negative pressure water supplying device, which comprises a water inlet junction main pipe, a water outlet junction main pipe, a timing switch control system and a frequency conversion steady pressure make-up pump. The timing switch control system is used for controlling operation time periods of the frequency conversion steady pressure make-up pump, a water inlet of the frequency conversion steady pressure make-up pump is in series connection with a butterfly valve and then connected with the water inlet junction main pipe, and a water outlet of the frequency conversion steady pressure make-up pump is sequentially in series connection with a check valve, a flexible joint and the butterfly valve and then connected with the water outlet junction main pipe. The water supplying device controls a water pump to run approaching optimum working condition and peak efficiency point, avoids the condition that the water pump runs under small flow and low efficiency, and realizes efficient energy conservation.
Description
Technical field
The utility model relates to hydrotechny, particularly a kind of no-negative-pressure water supply equipment that is used for.
Background technology
Existing non-negative-pressure variable frequency water supply facilities as shown in Figure 1, this equipment comprises water inlet drain valve 20, intake pressure transmitter 1, water inlet butterfly valve 21, strainer 22, backflow preventer 23, flow measurement device 2, flexible coupling 24, by-pass valve control 25, current stabilization jar 4 and the suction pressure transmitter 7 of connecting with municipal network water supply successively, suction pressure transmitter 7 is connected to into the water house steward 19 of confluxing, and drain valve 5 is cleaned in diaphragm 3 and blowdown that the band exhaust plant is set on the current stabilization jar 4; The water inlet house steward 19 of confluxing tells three branch roads, wherein two route butterfly valves 901, frequency conversion supercharging main pump 9, flap valve 902, flexible coupling 903, butterfly valves 904 are formed, article one, prop up route butterfly valve 12, flap valve 13, flexible coupling 14, butterfly valve 15 and form, last three branch roads are connected with the water outlet house steward 18 of confluxing again; The house steward 18 of confluxing is connected installed inside discharge pressure transmitter 10, air pressure tank 11, water outlet drain valve 16 and water outlet butterfly valve 17 is arranged with user side in water outlet; The band regularly intelligence control system 6 of switch comes whole system is carried out Energy Saving Control according to intake pressure transmitter 1, suction pressure transmitter 7, discharge pressure transmitter 10 and flow measurement device 2 feedback informations.Therefore, this equipment does not have frequency conversion voltage stabilizing make-up pump, and is constant for guaranteeing pipe network system pressure when water supply volume is in ebb, and frequency conversion supercharging this moment main pump operating frequency is at the following low-speed running of 30Hz.When water pump moves at variable speed, only appear under a certain specific rotation speeds for same model water pump best efficiency point, efficient all descends to some extent when other rotating speed, and it is bigger to descend.
Under the similar situation of operating mode, motor power (output) N ∝ n
3Descend with rotating speed, shaft power can sharply descend.Motor power output over-deflection rated power, perhaps operating frequency over-deflection power frequency all can make electric efficiency decline too fast, finally influences whole water pump assembly efficient.
The efficiency eta of frequency converter reduces with load factor β, so when rotating speed descended, the efficient of frequency converter descended to some extent.Motor is when low cruise, and the air quantity of cooling fan descends, and electric machine temperature rise is increased, and influences the safe operation of motor.
In sum, water pump is not necessarily energy-conservation when low-speed running, and influences the safe operation of motor.
The utility model content
The technical problems to be solved in the utility model is in order to overcome the defective of prior art, a kind of no-negative-pressure water supply equipment to be provided, its band timing handover control system and the frequency conversion voltage stabilizing make-up pump that not only plays voltage stabilizing but also hold concurrently supplementary function.
The utility model solves above-mentioned technical problem by following technical proposals: a kind of no-negative-pressure water supply equipment, it is characterized in that, it comprises into the water house steward of confluxing, the water outlet house steward of confluxing, timing handover control system and frequency conversion voltage stabilizing make-up pump, described timing handover control system is used for controlling the operation period of frequency conversion voltage stabilizing make-up pump, be connected with the water inlet house steward of confluxing behind butterfly valve of described frequency conversion voltage stabilizing make-up pump water inlet series connection, described frequency conversion voltage stabilizing make-up pump delivery port successively with a flap valve, a flexible coupling, the house steward of confluxing is connected for butterfly valve series connection back and water outlet.
Preferably, described frequency conversion voltage stabilizing make-up pump and frequency conversion supercharging main pump are connected in parallel on Inlet and outlet water and conflux on the house steward.
Preferably, described timing handover control system is an intelligence control system.
Preferably, the described water inlet house steward of confluxing is connected with a suction pressure transmitter.
Positive progressive effect of the present utility model is: the utility model is when in the peak period, municipal water use, the operation of frequency conversion supercharging main pump, when the flow of frequency conversion supercharging main pump can't satisfy user's water demand, frequency conversion supercharging this moment main pump enters power frequency, and the voltage stabilizing of frequency conversion simultaneously make-up pump also starts and comes into operation; When the municipal water use is at a low ebb, such as night, frequency conversion voltage stabilizing make-up pump water supply (playing the pressurize pressure stabilization function); By quoting of frequency conversion voltage stabilizing make-up pump, remove and both can make the corresponding reduction of frequency conversion supercharging main pump flow with the power shelves, avoided the situation that frequency conversion supercharging main pump low discharge supplies water, guarantee that frequency conversion supercharging main pump uses in efficient scope, simultaneously also guarantee the motor safety use, reached safe and reliable energy-conservation effect.
Description of drawings
Fig. 1 is a no-negative-pressure water supply equipment structural representation of the prior art;
Fig. 2 is a no-negative-pressure water supply equipment structural representation of the present utility model.
The specific embodiment
Lift a preferred embodiment below, and come the clearer the utility model that intactly illustrates in conjunction with the accompanying drawings.
As shown in Figure 2, the utility model no-negative-pressure water supply equipment comprises water inlet drain valve 20, intake pressure transmitter 1, water inlet butterfly valve 21, strainer 22, backflow preventer 23, flow measurement device 2, flexible coupling 24, by-pass valve control 25, current stabilization jar 4 and the suction pressure transmitter 7 of connecting with municipal network water supply successively, suction pressure transmitter 7 is connected to into the water house steward 19 of confluxing, and drain valve 5 is cleaned in diaphragm 3 and blowdown that the band exhaust plant is set on the current stabilization jar 4; The water inlet house steward 19 of confluxing tells four branch roads, wherein two are propped up route butterfly valves 901, frequency conversion supercharging main pump 9, flap valve 902, flexible coupling 903, butterfly valve 904 is formed, frequency conversion supercharging main pump 9 can be two or many pumps, one of remaining two branch road are by butterfly valve 801, frequency conversion voltage stabilizing make-up pump 8, flap valve 802, flexible coupling 803, butterfly valve 804 is formed, being butterfly valve of frequency conversion voltage stabilizing make-up pump 8 water inlets series connection 801 backs is connected with the water inlet house steward 19 of confluxing, frequency conversion voltage stabilizing make-up pump 8 and frequency conversion supercharging main pump 9 are connected in parallel on Inlet and outlet water and conflux on the house steward 19, frequency conversion voltage stabilizing make-up pump 8 delivery ports successively with flap valve 802, flexible coupling 803, the house steward 18 of confluxing is connected for butterfly valve 804 series connection back and water outlet; Article one, bypass line is made up of butterfly valve 12, flap valve 13, flexible coupling 14, butterfly valve 15, and last four branch roads are connected with the water outlet house steward 18 of confluxing again; The house steward 18 of confluxing is connected installed inside discharge pressure transmitter 10, air pressure tank 11, water outlet drain valve 16 and water outlet butterfly valve 17 is arranged with user side in water outlet; The band regularly intelligence control system 6 of switch comes whole system is carried out Energy Saving Control according to intake pressure transmitter 1, suction pressure transmitter 7, discharge pressure transmitter 10 and flow measurement device 2 feedback informations, be that intelligence control system 6 is a timing handover control system, regularly handover control system is used for controlling the operation period of frequency conversion voltage stabilizing make-up pump.
Operating principle of the present utility model is: intelligence control system is set water use peak and water low ebb period, realizes the water supply of frequency conversion voltage stabilizing make-up pump in water low ebb period by switch regularly; Supply water at water use peak frequency conversion in period supercharging main pump, if flow not enough, frequency conversion supercharging main pump enters power frequency, frequency conversion voltage stabilizing make-up pump variable frequency water supply.Realize that by above control water pump moves near optimum condition, best efficiency point, avoid water pump operation situation under the inefficient situation of low discharge, realize energy-efficient.
Though more than described the specific embodiment of the present utility model, but those skilled in the art is to be understood that, these only illustrate, and under the prerequisite that does not deviate from principle of the present utility model and essence, can make numerous variations or modification to these embodiments.Therefore, protection domain of the present utility model is limited by appended claims.
Claims (3)
1. no-negative-pressure water supply equipment, it is characterized in that, it comprises into water conflux house steward, water outlet conflux house steward, regularly handover control system and frequency conversion voltage stabilizing make-up pump, described timing handover control system is used for controlling the operation period of frequency conversion voltage stabilizing make-up pump, is connected with the water inlet house steward of confluxing behind butterfly valve of described frequency conversion voltage stabilizing make-up pump water inlet series connection, described frequency conversion voltage stabilizing make-up pump delivery port afterwards is connected with the water outlet house steward of confluxing with a flap valve, flexible coupling, butterfly valve series connection successively.
2. no-negative-pressure water supply equipment as claimed in claim 1 is characterized in that, described frequency conversion voltage stabilizing make-up pump and frequency conversion supercharging main pump are connected in parallel on Inlet and outlet water and conflux on the house steward.
3. no-negative-pressure water supply equipment as claimed in claim 1 is characterized in that, the house steward of confluxing is connected with a suction pressure transmitter in described water inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200705806U CN201588252U (en) | 2009-04-17 | 2009-04-17 | Non-negative pressure water supplying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200705806U CN201588252U (en) | 2009-04-17 | 2009-04-17 | Non-negative pressure water supplying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201588252U true CN201588252U (en) | 2010-09-22 |
Family
ID=42748023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200705806U Expired - Fee Related CN201588252U (en) | 2009-04-17 | 2009-04-17 | Non-negative pressure water supplying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201588252U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852194A (en) * | 2011-06-27 | 2013-01-02 | 深圳市四方电气技术有限公司 | Constant-pressure water supply system and method without negative pressure |
| CN103835335A (en) * | 2014-03-28 | 2014-06-04 | 杜大虎 | Energy-saving infinite constant-pressure water supply method and device |
| CN106284530A (en) * | 2016-08-19 | 2017-01-04 | 湖南湘星环保水处理设备有限公司 | A kind of double pump frequency conversion water supply facility |
| CN114277892A (en) * | 2022-01-25 | 2022-04-05 | 中韩杜科泵业(湖州)有限公司 | Water supply system with novel intelligent structure |
-
2009
- 2009-04-17 CN CN2009200705806U patent/CN201588252U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852194A (en) * | 2011-06-27 | 2013-01-02 | 深圳市四方电气技术有限公司 | Constant-pressure water supply system and method without negative pressure |
| CN103835335A (en) * | 2014-03-28 | 2014-06-04 | 杜大虎 | Energy-saving infinite constant-pressure water supply method and device |
| CN103835335B (en) * | 2014-03-28 | 2015-04-08 | 杜大虎 | Energy-saving infinite constant-pressure water supply method and device |
| CN106284530A (en) * | 2016-08-19 | 2017-01-04 | 湖南湘星环保水处理设备有限公司 | A kind of double pump frequency conversion water supply facility |
| CN114277892A (en) * | 2022-01-25 | 2022-04-05 | 中韩杜科泵业(湖州)有限公司 | Water supply system with novel intelligent structure |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20160417 |