CN102032200A - Power saving design method for water supply and drainage centrifugal pump - Google Patents
Power saving design method for water supply and drainage centrifugal pump Download PDFInfo
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- CN102032200A CN102032200A CN2011100029896A CN201110002989A CN102032200A CN 102032200 A CN102032200 A CN 102032200A CN 2011100029896 A CN2011100029896 A CN 2011100029896A CN 201110002989 A CN201110002989 A CN 201110002989A CN 102032200 A CN102032200 A CN 102032200A
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- centrifugal pump
- design
- lift
- pipe
- line system
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Abstract
The invention discloses a power saving design method for a water supply and drainage centrifugal pump. In the method, two work conditions of low lift and high lift of the centrifugal pump are calculated with a selected Hazen-Williams coefficient of the Hazen-Williams formula in the Code for Design of Outdoor Water Supply (GB 50013-2006); and the same pump shell is adopted and impellers with different diameters are matched so as to meet the needs at the initial period and the operation period of a pipeline system respectively and solve the problems that the power consumption is excessively high at the initial operation period of the pipeline system and the motor of the centrifugal pump is susceptible to overload trip.
Description
Technical field
The present invention relates to plumbing centrifugal pump Design of power saving and plumbing pressure piping loss of head computational methods.
Background technique
At present, it is to use later corrosion in 20 years and fouling situation to be benchmark with water supply and sewerage pipeline that the loss of head of plumbing pressure piping is calculated, and selects the parameter of hydraulic formula, determines centrifugal pump lift, thereby guarantees 20 years normal later on uses of pipeline.But at system's initial operating stage, the centrifugal pump lift of determining according to the aforementioned calculation method is far above the needed lift of pipe-line system, causes the excessive and easy overburdening of centrifugal pump motor of power consumption to jump the situation of car.
Summary of the invention
Cause high power consumption of plumbing centrifugal pump initial operating stage and the easy overburdening of motor to jump the deficiency of car in order to overcome design methods existing, the invention provides a kind of novel design method, address the above problem.
The technical solution adopted for the present invention to solve the technical problems is:
1. the pipe-line system design phase, plumbing centrifugal pump type selecting is considered two operating modes, i.e. in two stages of initial operating stage and runtime, calculate two lifts of centrifugal pump (low lift and high-lift).Select the impeller of two different-diameters of same pump case design for use, satisfy the needs of above-mentioned two lifts respectively.Motor adopts and satisfies the high-lift power of centrifugal pump.
2. pipe-line system operation phase (technological transformation project), calculate according to loss of pipeline actual head and formula, determine the low lift of plumbing centrifugal pump, keeping under the constant situation of former pump case, design minor diameter impeller adopts the mode of changing impeller to satisfy the needs of system's operation.
The invention has the beneficial effects as follows,, economize on electricity and avoid motor overload to jump the situation of car at the centrifugal pump initial operating stage.
Embodiment
1. pipe-line system design phase, by to " Code for design of outdoor water supply engineering " (GB50013-2006) in the sea once-sea of William's formula once-William's coefficient selection, calculate centrifugal pump lift.At initial operating stage, the sea once-William's coefficient chooses 120～140, calculates the low lift of centrifugal pump; In the runtime, the sea once-William's coefficient chooses 90～119, calculates the high-lift of centrifugal pump.Select the impeller of two different-diameters of same pump case design for use,, adopt the minor diameter impeller, satisfy the needs of pipe-line system low lift operating mode operation at initial operating stage; In the runtime, do not satisfy pipe-line system operation needs as finding lift, change the major diameter impeller again, satisfy the needs of the high-lift operating mode operation of pipe-line system.
The sea once-William's formula
In the formula:
H-pipeline loss of head (m);
L-duct length (m);
d
j-pipeline calculates internal diameter (m);
Q-flow (m
3/ s);
C
h-Hai once-William's coefficient.
2. pipe-line system operation phase (technological transformation project), according to pipeline actual head loss and adopt " Code for design of outdoor water supply engineering " (GB50013-2006) in the sea once-calculating of William's formula (sea once-William's coefficient choose 120～140), the comprehensive low lift of determining the plumbing centrifugal pump, keeping under the constant situation of former pump case, design minor diameter impeller adopts the mode of changing impeller to satisfy the needs of system's low lift operating mode operation.
Claims (3)
1. plumbing centrifugal pump Design of power saving method, at the pipe-line system initial operating stage, solve the excessive and easy overburdening of centrifugal pump motor of power consumption and jump the problem of car, it is characterized in that: by to " Code for design of outdoor water supply engineering " (GB50013-2006) in the sea once-sea of William's formula once-William's coefficient selection, calculate low lift and high-lift two operating modes of centrifugal pump, satisfy the needs of pipe-line system initial operating stage and runtime respectively.
2. according to claims 1 described plumbing centrifugal pump Design of power saving method, it is characterized in that: the pipe-line system design phase, at initial operating stage, the sea once-William's coefficient chooses 120～140, calculates the low lift of centrifugal pump; In the runtime, the sea once-William's coefficient chooses 90～119, calculates the high-lift of centrifugal pump, selects the impeller of two different-diameters of same pump case design for use, at initial operating stage, adopts the minor diameter impeller, satisfies the needs of pipe-line system low lift operating mode operation; In the runtime, do not satisfy pipe-line system operation needs as finding lift, change the major diameter impeller again, satisfy the needs of the high-lift operating mode operation of pipe-line system.
3. according to claims 1 described plumbing centrifugal pump Design of power saving method, it is characterized in that: the pipe-line system operation phase (technological transformation project), according to pipeline actual head loss and adopt " Code for design of outdoor water supply engineering " (GB50013-2006) in the sea once-calculating of William's formula (sea once-William's coefficient choose 120～140), the comprehensive low lift of determining the plumbing centrifugal pump, keeping under the constant situation of former pump case, design minor diameter impeller adopts the mode of changing impeller to satisfy the needs of system's low lift operating mode operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100029896A CN102032200A (en) | 2011-01-10 | 2011-01-10 | Power saving design method for water supply and drainage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100029896A CN102032200A (en) | 2011-01-10 | 2011-01-10 | Power saving design method for water supply and drainage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102032200A true CN102032200A (en) | 2011-04-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100029896A Pending CN102032200A (en) | 2011-01-10 | 2011-01-10 | Power saving design method for water supply and drainage centrifugal pump |
Country Status (1)
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| CN (1) | CN102032200A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000329072A (en) * | 1999-05-19 | 2000-11-28 | Sayama Seisakusho:Kk | Water supplying method |
| CN2409363Y (en) * | 1999-04-11 | 2000-12-06 | 赵凤民 | Hydraulic submersible step pump |
| CN2627249Y (en) * | 2003-06-02 | 2004-07-21 | 上海开利制泵有限公司 | Two-stage single suction horizontal centrifugal pump |
| EP1936205A1 (en) * | 2006-12-22 | 2008-06-25 | Grundfos Management A/S | Method for operating a speed controllable centrifugal pump power unit |
| EP2003253A2 (en) * | 2006-03-31 | 2008-12-17 | Kabushiki Kaisha Toshiba | Water distribution information management device |
-
2011
- 2011-01-10 CN CN2011100029896A patent/CN102032200A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2409363Y (en) * | 1999-04-11 | 2000-12-06 | 赵凤民 | Hydraulic submersible step pump |
| JP2000329072A (en) * | 1999-05-19 | 2000-11-28 | Sayama Seisakusho:Kk | Water supplying method |
| CN2627249Y (en) * | 2003-06-02 | 2004-07-21 | 上海开利制泵有限公司 | Two-stage single suction horizontal centrifugal pump |
| EP2003253A2 (en) * | 2006-03-31 | 2008-12-17 | Kabushiki Kaisha Toshiba | Water distribution information management device |
| EP1936205A1 (en) * | 2006-12-22 | 2008-06-25 | Grundfos Management A/S | Method for operating a speed controllable centrifugal pump power unit |
Non-Patent Citations (2)
| Title |
|---|
| 中华人民共和国建设部、中华人民共和国国家质量监督检验检疫总局: "《中华人民共和国国家标准室外给水设计规范GB 50013-2006》", 18 January 2006 * |
| 齐兴佩等: "扩大单级离心泵性能的设计方法探讨", 《水泵技术》 * |
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Application publication date: 20110427 |