CN201065544Y - Negative pressure-free continuous frequency conversion water supply installation - Google Patents
Negative pressure-free continuous frequency conversion water supply installation Download PDFInfo
- Publication number
- CN201065544Y CN201065544Y CNU2007201392871U CN200720139287U CN201065544Y CN 201065544 Y CN201065544 Y CN 201065544Y CN U2007201392871 U CNU2007201392871 U CN U2007201392871U CN 200720139287 U CN200720139287 U CN 200720139287U CN 201065544 Y CN201065544 Y CN 201065544Y
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- China
- Prior art keywords
- water
- pressure
- water supply
- frequency conversion
- water pump
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- Expired - Lifetime
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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 Non-Positive-Displacement Pumps (AREA)
Abstract
The utility model discloses a non-negative pressure uninterrupted frequency conversion water feeding device, comprising a water storage tank [3] connected with a water supply network, a plurality of water pumps [10], a group of pressurization pipelines [8] and an automatic control system [13]; wherein, the group of pressurization pipelines [8] comprises the water pumps parallel with the water outlet of the water storage tank; the automatic control system [13] is characterized in that the rotational speed of the water pump is regulated by a frequency conversion governor according to the hydraulic pressure of the outlet end and the inlet end of the pressurization pipeline; a depressurizing program is arranged in the automatic control system; when the hydraulic pressure T [i] of the inlet end of the pressurization pipeline is lower than the set value T [2], the uninterrupted running of the water pump is remained by automatically decreasing the hydraulic pressure of the outlet end of the pressurization pipeline to reduce the startup-shutdown times of the water pump. The utility model has the advantages of electric energy saving and prolonged service life of water pump, and is particularly suitable for supplying water to high-floor buildings and residential districts.
Description
Technical field
The utility model relates to and a kind ofly supplying water and the uninterrupted water supply installation of no negative pressure that can supercharging to the user.
Technical background
The building that China adopts have roughly experienced three phases for water-pressurization system.Phase I is the method that adopts " reservoir+water pump+high level cistern ", and municipal administration comes water to need the water of supercharging all to enter earlier reservoir, then by delivering to the user after the constant speed pump pressurization, and regulating action when high level cistern plays high ebb water; Second stage adopts the method for " reservoir+frequency conversion speed adjusting pump ", after having set the pressure of supply water of water pump, under the control of frequency converter, the rotating speed of water pump is that the variation with output changes, the result who reduces rotating speed has reduced power, has saved power consumption to a certain extent.There is significant disadvantages in the water supply facilities in above-mentioned two stages: the one, open water storage facility is arranged, water contacts water quality with atmosphere and is polluted easily, the 2nd, all let out to atmospheric pressure after entering reservoir with the municipal water supply of certain hydraulic pressure, fail to utilize the overbottom pressure of municipal water supply, the energy that this part does not utilize will be no small electricity charge after year in and year out.The no-negative-pressure water supply equipment that occurs can overcome the problems referred to above at present, Chinese patent CN2551689Y discloses a kind of no negative pressure automatic frequency-conversion pressurization and water supply equipment, form by sealed water tank, booster water pump group and frequency conversion control circuit thereof, the water of water supply network is sent in the sealed water tank, use for the user by booster water pump pressurization back again, because sealed water tank does not contact with atmosphere, therefore can avoid the secondary pollution of water quality; And overbottom pressure was stackable for the lift utilization when municipal network water supply water flow to pump intake, and water pump just replenishes and sets hydraulic pressure and overbottom pressure insufficient section, so is energy-conservation.But night particularly after midnight because the user go to bed, water supply volume is less, but the frequent low cruise of water pump, the waste electric energy.
Summary of the invention
The purpose of this utility model provides a kind of negative-pressureless successive frequency conversion water supply device, under the little situation of water supply volume at night, can shut down, with protection motor and energy conservation.
The utility model is achieved in that it comprises a water tank that connects with water supply network, is equipped with negative pressure inhibition device on the water tank; The one group of pressure piping formed by several water pumps that are connected in parallel on the water tank delivery port and the automatic control system of regulating pump rotary speed according to the hydraulic pressure of pressure piping entrance end, by variable-frequency governor; Be connected to accumulator on the pipeline of pressure piping delivery port.Under the little situation of water supply volume at night, can switch off the pump, utilize the hydraulic pressure in the accumulator to supply water to the user.
The utility model utilizes the accumulator accumulation of energy not only to save the water pump electricity consumption time after midnight but also allowed equipment be had a rest; Make full use of the pressure of former tap water pipe network, reduced energy consumption.Be specially adapted to high-floor feedwater and biotope etc.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the programmed logic block diagram of the utility model automatic control system.
The specific embodiment
As shown in Figure 1, the running water pipe 1 of water supply network links to each other through the water inlet of valve 2 with water tank 3 bottoms, and at water tank 1 top negative pressure inhibition device 4 being installed is outlet valve, aqueduct 5 is housed, in order to avoid current spill on the negative pressure inhibition device 4.Pressure piping 8 is made up of several water pumps in parallel 10, the water inlet of each water pump links to each other with the delivery port of water tank 1 bottom, the concrete quantity of water pump is determined according to required output, the entery and delivery port of each water pump all adds valve 8, and flap valve 11 is housed at water outlet end, also be parallel with a bypass branch 12 that flap valve is housed on the pressure piping 8, the entrance end of pressure piping 8 is equipped with intake pressure sensor 7 and discharge pressure sensor 14, adds accumulator 15 at the port of export of pressure piping between the user side 16.The signal of telecommunication of water inlet pressure sensor 7 and delivery port pressure sensor 14 is sent into automatic control system 13, and system judges through control algolithm and logic, carries to instruct variable-frequency governor the rotating speed of control of pump 10 and start-stop.
The concrete course of work is as follows: at first opening water intaking valve 2 will be full of water in the water tank 3, air is by after negative pressure inhibition device 4 emptyings in the water tank 3, and negative pressure inhibition device is closed, and sends sign on then, as shown in Figure 2, the intake pressure signal T that at first the water inlet pressure sensor collected of control system
iJudge whether intake pressure meets the demands, if satisfy the pressure requirement promptly greater than the pressure T that sets
1, water pump is not worked, and is supplied water through bypass branch by water; Otherwise the startup water pump is adjusted the rotating speed of water pump automatically according to the pressure signal of delivery port pressure sensor, satisfying under the prerequisite that supplies water, with the outlet pressure automatic voltage regulation of water pump to T
S, to reach the delivery port pressure of setting; If a pump working can not satisfy water supply requirement, system can start other water pump.
When jellyfish Guan Laishui from the beginning was not enough, the water of storage at first replenished the deficiency that supplies water, i.e. T in the water tank
iLess than setting value T
2The time, drawdown in the water storage tank body, the negative pressure inhibition device action, air enters in the water storage tank body, at this moment the signal T that records of intake pressure sensor
iHeight for water level in the water storage tank body, system enters automatic brownout operation program, automatic control system is according to the height of water level in the water storage tank body, the outlet pressure of water pump is reduced automatically, kept Inlet and outlet water balance in the water tank, do not shut down to guarantee water pump to greatest extent by reducing the pressure piping outlet pressure, at this moment, though outlet pressure reduces, can not satisfy high-rise user and use, the low layer user still can use; Water level is T in the water storage tank body
iBe lower than lower limit T
4The time, pump trip; Work as T
iRecover normal, water level is higher than in limited time in the tank body, starts water pump more automatically and enters normality.In addition, also be provided with the fire fighting supply program, when system receives the fire-fighting signal, automatically switch to the fire-fighting pressure state.
Usually night, water supply volume was less, when water supply volume F is that the rate of discharge of pressure piping is lower than setting value F
1The time, system enters the low discharge working programme, keeps a small amount of water by the pressure that stores in the accumulator, works as T
OWithdraw from force value T less than the low discharge of setting
3The Shi Zidong turn on pump is to the accumulator supercharging.
Pipeline can not produce vacuum during the utility model had guaranteed to supply water; Guaranteed continuous water supply to greatest extent; Particularly utilize the accumulator accumulation of energy not only to save the water pump electricity consumption time after midnight but also allowed equipment be had a rest; Make full use of the pressure of former tap water pipe network, reduced energy consumption.Be specially adapted to high-floor feedwater and biotope etc.
Claims (1)
1. negative-pressureless successive frequency conversion water supply device comprises a water tank that connects with water supply network [3], and negative pressure inhibition device [4] is housed on the water tank; The one group of pressure piping [8] formed by several water pumps [10] that are connected in parallel on the water tank delivery port and the automatic control system [13] of regulating pump rotary speed according to the hydraulic pressure of pressure piping entrance end, by variable-frequency governor; It is characterized in that: be connected to accumulator [15] on the pipeline of pressure piping delivery port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201392871U CN201065544Y (en) | 2007-02-09 | 2007-02-09 | Negative pressure-free continuous frequency conversion water supply installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201392871U CN201065544Y (en) | 2007-02-09 | 2007-02-09 | Negative pressure-free continuous frequency conversion water supply installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201065544Y true CN201065544Y (en) | 2008-05-28 |
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ID=39482715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201392871U Expired - Lifetime CN201065544Y (en) | 2007-02-09 | 2007-02-09 | Negative pressure-free continuous frequency conversion water supply installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201065544Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704548A (en) * | 2012-06-26 | 2012-10-03 | 广西佛泵科技有限公司 | Variable frequency water supply facility for high-rise buildings |
| CN103046616A (en) * | 2012-12-26 | 2013-04-17 | 淮安万邦香料工业有限公司 | Constant-pressure control method for circulating water system |
| CN103133868A (en) * | 2013-02-25 | 2013-06-05 | 西安理工大学 | Method for improving reliability of water supply pipe network |
| CN103388350A (en) * | 2012-05-11 | 2013-11-13 | 四川优的科技有限公司 | Frequency-conversion constant-pressure water supply system based on PLC (Programmable Logic Controller) |
| CN105133700A (en) * | 2015-08-27 | 2015-12-09 | 田国平 | Automatic frequency conversion and pressurization water supply equipment |
| RU2620742C1 (en) * | 2015-12-21 | 2017-05-29 | Государственное Унитарное Предприятие "Водоканал Санкт-Петербурга" | Method of energy saving in water supply systems |
-
2007
- 2007-02-09 CN CNU2007201392871U patent/CN201065544Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388350A (en) * | 2012-05-11 | 2013-11-13 | 四川优的科技有限公司 | Frequency-conversion constant-pressure water supply system based on PLC (Programmable Logic Controller) |
| CN102704548A (en) * | 2012-06-26 | 2012-10-03 | 广西佛泵科技有限公司 | Variable frequency water supply facility for high-rise buildings |
| CN103046616A (en) * | 2012-12-26 | 2013-04-17 | 淮安万邦香料工业有限公司 | Constant-pressure control method for circulating water system |
| CN103133868A (en) * | 2013-02-25 | 2013-06-05 | 西安理工大学 | Method for improving reliability of water supply pipe network |
| CN105133700A (en) * | 2015-08-27 | 2015-12-09 | 田国平 | Automatic frequency conversion and pressurization water supply equipment |
| RU2620742C1 (en) * | 2015-12-21 | 2017-05-29 | Государственное Унитарное Предприятие "Водоканал Санкт-Петербурга" | Method of energy saving in water supply systems |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tongling water supply installation Co., Ltd. Assignor: Tongling Water Affairs Co., Ltd. Contract fulfillment period: 2009.2.20 to 2014.2.19 Contract record no.: 2009340000091 Denomination of utility model: Negative pressure-free continuous frequency conversion water supply installation Granted publication date: 20080528 License type: Exclusive license Record date: 20090508 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.2.20 TO 2014.2.19; CHANGE OF CONTRACT Name of requester: TONGLING CITY GONGSHUIANZHUANG CO.,LTD. Effective date: 20090508 |
|
| ASS | Succession or assignment of patent right |
Owner name: TONGLING CITY GONGSHUIANZHUANG CO.,LTD. Free format text: FORMER OWNER: TONGLING SHOUCHUANG WATER UTILITIES CO.,LTD. Effective date: 20090612 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090612 Address after: 2, Xinguang Road, Tongling, Anhui, China: 244000 Patentee after: Tongling water supply installation Co., Ltd. Address before: 2, Xinguang Road, Tongling, Anhui, China: 244000 Patentee before: Tongling Water Affairs Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080528 |