CN2809027Y - Non-negative pressure water supply apparatus - Google Patents
Non-negative pressure water supply apparatus Download PDFInfo
- Publication number
- CN2809027Y CN2809027Y CN 200520016029 CN200520016029U CN2809027Y CN 2809027 Y CN2809027 Y CN 2809027Y CN 200520016029 CN200520016029 CN 200520016029 CN 200520016029 U CN200520016029 U CN 200520016029U CN 2809027 Y CN2809027 Y CN 2809027Y
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- China
- Prior art keywords
- pressure
- pipeline
- water
- surge tank
- water supply
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- Expired - Fee Related
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Abstract
The utility model discloses a non-negative pressure water supply apparatus which comprises a water inlet pressure sensor arranged on a pipeline connected between a tap water pipe network and a water inlet of a pressure surge tank, the pressure surge tank working under the sealing state, a pressurizing water pump set pipeline and a conventional pipeline with a control valve connected between a water outlet of the pressure surge tank and a user side, and a water outlet pressure sensor arranged on an inside pipeline of the user side. The utility model can respectively acquire electric signals of pressure values of the sensors from the water inlet and the water outlet and control a frequency converter to work through a programmable controller. The utility model has the advantages that a water inlet of a water pump is provided with the fully closed pressure surge tank. The utility model keeps the water flowing continuity of a water inlet pipeline through buffered and changeable flow state, eliminates generating conditions of the negative pressure, realizes the integral function of the non-negative pressure water supply apparatus by matching the control of the stable flow state of the system, and ensures that the water inlet pipeline has no impact and safety.
Description
Technical field
The utility model relates to a kind of secondary pressurizing feedwater equipment.
Background technology
Existing no-negative-pressure water supply equipment is to mend tank bodies such as tasting device and devices such as vacuum compensation device, negative inspiratory pressure valve, vacuum suppresser are housed by pot with no negative pressure or current stabilization, mends atmosphere and eliminate negative pressure after generating negative pressure in the pipeline.After above-mentioned generation negative pressure, eliminate in the process of negative pressure, can destroy the Transient Flow continuity of current.Not enough or can not quantitative analysis the time when the impact understanding that may be subjected to the complexity of this dynamic process with to inlet pipeline, just have no reason to believe that the said equipment can guarantee in the pipeline no negative pressure and public pipe network do not produced any influence and impact.
Summary of the invention
The purpose of this utility model is to provide a kind of no-negative-pressure water supply equipment, can solve directly to be connected in series water pump supercharging feedwater and not make pipeline the secondary pressurizing feedwater equipment of negative pressure appearance occur on the public water supply pipeline.
The structure of no-negative-pressure water supply equipment described in the utility model comprises:
Be arranged on and connect the intake pressure sensor on the pipeline between tap water pipe network and the pressure surge tank water inlet;
Only establish the manometric hermetically sealed pressure surge tank of water inlet, delivery port and tank body;
The conventional pipeline of forming by booster water pump group, pipeline and valve that is connected between the delivery port of described pressure surge tank and the user side;
The discharge pressure sensor that is provided with on the inboard pipeline of user side;
Search the cell pressure value signal of telecommunication from above-mentioned entery and delivery port respectively, the control variable-frequency governor is regulated the programmable logic controller of booster water pump group work, the condition of its control action:
(1) determines flow of inlet water Q1 and water flow Q2 according to dynamic datas such as entery and delivery port pressure sensors;
(2) as Q1 during greater than public pipe network limited flow rate Q0, the time limit t1 restriction variable-frequency governor to set can not surpass the water intaking of Q0 flow;
(3) when Q1 ≠ Q2,, wait for that fluidised form is latent fixed by setting time limit t2 restriction variable-frequency governor;
(4) when satisfying above-mentioned (2), (3) condition, by outlet or the constant principle of terminal pressure, regulate the water pump revolution, finish supercharging water feeding work.
Aforesaid no-negative-pressure water supply equipment, described booster water pump group pipeline are working barrel group pipeline and stand by pump group pipeline parallel-connection structure.
Aforesaid no-negative-pressure water supply equipment, the import and export of described pressure surge tank are separately positioned on the tank skin of the latter half of tank body.
Aforesaid no-negative-pressure water supply equipment, the top of described pressure surge tank are provided with a diaphragm and a three-way exhaust valve to the observation of tank body internal pressure.
Aforesaid no-negative-pressure water supply equipment, described pressure buffer pot bottom are provided with interface and the outfall that a sterilization cleaning equipment is reserved.
Advantage and the good effect that the utlity model has are as follows:
Pump intake is equipped with the pressure surge tank of totally-enclosed, with the influence of buffering transition fluidised form, keeps the mobile continuity of inlet pipeline water, eliminate the negative pressure formation condition, and cooperate the stabilization of fluidized of native system to control, and finish the allomeric function of no-negative-pressure water supply equipment, ensure that inlet pipeline does not have impact and safety.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a control flow chart of the present utility model.
The specific embodiment
Shown in Figure 1 is that structure of the present utility model is implemented illustration, and tap water pipe network 1 links to each other with the import of pressurized tank buffering 6 by water intaking valve 2, strainer valve 3, backflow preventer 4, is provided with intake pressure sensor 5 in this import department.Pressurized tank cushions 6 tops and is provided with diaphragm and three-way exhaust valve 7, and bottom 8 is provided with interface and the outfall 27 that the sterilization cleaning equipment is reserved.Pressurized tank cushions 6 delivery ports and the two-way booster water pump parallel pipeline of being made up of valve 10,19,14,24, soft connection device 11,20,12,22, booster water pump group (complete) 21,28, flap valve 13,23, also connects the bypass line that forms with another routing valve 16, flap valve 17 and valve 18 and is in parallel.The parallel pipeline of described booster water pump is that working barrel pipeline and stand by pump pipeline two-way and bypass line are equal, is connected by pipeline with user side 26, on the inboard pipeline of user side a delivery port pressure sensor 15 and valve 25 is installed.10～25 connection all belongs to the conventional structure mode among the figure.
The standard electric signal that control system of the present utility model constitutes by pressure sensing 5.16 is input to programmable logic controller 9; Through control computing output control instruction, carry out speed Control by 29 pairs of booster pumps of frequency converter 21.28 of establishing for adjusting water pump revolution, guarantee that by control device this device turns round satisfying under the pipe network qualifications, eliminates the negative pressure formation condition, thereby can not produce negative pressure.
Concrete controlled condition can be referring to Fig. 2, and it may further comprise the steps:
(1) water inlet is equipped with pressure sensor, gathers inlet pressure P1; Outlet pressure and the F dynamic datas such as (frequency or revolutions) that uses variable-frequency governor to have calculate variable as Mathematical Modeling;
(2) through the Mathematical Modeling calculation, obtain flow of inlet water Q1 and water flow Q2;
(3) as Q1 during,, can not surpass the water intaking of Q0 flow to set time limit t1 restriction frequency converter greater than public pipe network limited flow rate Q0;
(4) when Q ≠ Q2, establish speed system by setting time limit t2 restriction, wait for that fluidised form is latent fixed;
(5) governing system by outlet or the constant principle free adjustment of terminal pressure water pump revolution, is finished the supercharging water feeding function when satisfied (3), (4) condition.
Claims (5)
1. no-negative-pressure water supply equipment is characterized in that its structure comprises:
Be arranged on and connect the intake pressure sensor on the pipeline between tap water pipe network and the pressure surge tank water inlet;
Only establish the manometric hermetically sealed pressure surge tank of water inlet, delivery port and tank body;
The conventional pipeline of forming by booster water pump group, pipeline and valve that is connected between the delivery port of described pressure surge tank and the user side;
The discharge pressure sensor that is provided with on the inboard pipeline of user side;
Search the cell pressure value signal of telecommunication from above-mentioned entery and delivery port respectively, the control variable-frequency governor is regulated the programmable logic controller of booster water pump group work.
2. no-negative-pressure water supply equipment as claimed in claim 1 is characterized in that: described booster water pump group pipeline is working barrel group pipeline and stand by pump group pipeline parallel-connection structure.
3. no-negative-pressure water supply equipment as claimed in claim 1 is characterized in that: the import and export of described pressure surge tank is separately positioned on the tank skin of the latter half of tank body.
4. no-negative-pressure water supply equipment as claimed in claim 1 is characterized in that: the top of described pressure surge tank is provided with a diaphragm and a three-way air valve to the observation of tank body internal pressure.
5. no-negative-pressure water supply equipment as claimed in claim 1 is characterized in that: described pressure buffer pot bottom is provided with interface and the outfall that a sterilization cleaning equipment is reserved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520016029 CN2809027Y (en) | 2005-04-14 | 2005-04-14 | Non-negative pressure water supply apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520016029 CN2809027Y (en) | 2005-04-14 | 2005-04-14 | Non-negative pressure water supply apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2809027Y true CN2809027Y (en) | 2006-08-23 |
Family
ID=36925210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520016029 Expired - Fee Related CN2809027Y (en) | 2005-04-14 | 2005-04-14 | Non-negative pressure water supply apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2809027Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405934A (en) * | 2014-11-13 | 2015-03-11 | 福建南方路面机械有限公司 | Liquid conveying system capable of preventing frost cracking of pipeline |
| CN104564645A (en) * | 2014-11-28 | 2015-04-29 | 江门谦信化工发展有限公司 | Buffer device for flow rate of positive displacement pump |
| CN105180414A (en) * | 2015-09-16 | 2015-12-23 | 成都正升能源技术开发有限公司 | Self-preheating liquid heater |
| CN107152582A (en) * | 2017-06-30 | 2017-09-12 | 华蓝设计（集团）有限公司 | Super high-rise dwelling house feed pipe noise reduction system |
| CN112058754A (en) * | 2020-08-24 | 2020-12-11 | 合肥阳光新能源科技有限公司 | Water cleaning system and control method thereof |
-
2005
- 2005-04-14 CN CN 200520016029 patent/CN2809027Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405934A (en) * | 2014-11-13 | 2015-03-11 | 福建南方路面机械有限公司 | Liquid conveying system capable of preventing frost cracking of pipeline |
| CN104564645A (en) * | 2014-11-28 | 2015-04-29 | 江门谦信化工发展有限公司 | Buffer device for flow rate of positive displacement pump |
| CN105180414A (en) * | 2015-09-16 | 2015-12-23 | 成都正升能源技术开发有限公司 | Self-preheating liquid heater |
| CN107152582A (en) * | 2017-06-30 | 2017-09-12 | 华蓝设计（集团）有限公司 | Super high-rise dwelling house feed pipe noise reduction system |
| CN112058754A (en) * | 2020-08-24 | 2020-12-11 | 合肥阳光新能源科技有限公司 | Water cleaning system and control method thereof |
| CN112058754B (en) * | 2020-08-24 | 2022-04-08 | 阳光新能源开发股份有限公司 | Water cleaning system and control method thereof |
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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: 20060823 Termination date: 20110414 |
|
| DD01 | Delivery of document by public notice |
Addressee: Yang Junyang Document name: Notice of acceptance of a petition for invalidation |