The remodeling method of customized energy-efficient water pumpTechnical field
The present invention relates to the customized technologies of energy-saving water pump, more particularly to a kind of transformation of customized energy-efficient water pumpMethod.
Background technique
Pump energy saving renovation technique mainly has 3 kinds at present:
1, according to live actual condition (flow, lift), existing Model of pump is selected.The flow of usual existing Model of pumpIt does not often meet, can only be met the requirements by increasing or cutting impeller diameter with the flow of needs and lift with lift, and increaseOr the efficiency of cutting impeller diameter water pump can decrease.Or flow and lift are able to satisfy working condition requirement, but not with the highest of pumpEfficient point is overlapped.
2, by changing the revolving speed of water pump, such as frequency conversion, permanent-magnet speed governor and coupler speed control device, to change pumpPerformance meets working condition requirement.Disadvantage: increased speed control device itself also consumes energy, and revolving speed changes the effect that can reduce pump itself simultaneouslyRate is not often also overlapped with the best efficiency point of pump.
3, increase regulating device, such as energy-saving control valve makes pump operation in high efficient district, reaches correction by changing Unit headThe purpose of operating condition.Disadvantage: regulating device itself also consumes energy, increases the security risk of apparatus system.
Summary of the invention
The purpose of the present invention is to provide a kind of remodeling methods of customized energy-efficient water pump, effectively solve above-mentioned skillArt problem.
Effectively to solve above-mentioned technical problem, the technical solution adopted by the present invention is as follows:
A kind of remodeling method of customized energy-efficient water pump, method includes the following steps:
(1) water pump operation curve and parameter are set, definition flow is Q, head curve H, efficiency curve η:
(2) live actual motion flow-lift curve parameter value is defined as actual parameter point A；
(3) optimize various specific speed hydraulic models, establish outstanding database of hydraulic model, according to live actual operation parameters point A,Outstanding hydraulic model, customized energy-efficient water pump or impeller is selected to design with the parameter point A of actual motion, flow-efficiencyThe highest efficiency eta of curve Q- ηmaxIt is completely coincident with parameter point A.
Particularly, this method is further comprising the steps of:
Setting device curve H=KQ2, flow-lift curve and device curve H=KQ2Intersect at point A.
Particularly, this method is further comprising the steps of:
Set flow-efficiency curve best efficiency point ηmaxPoint A with actual requirement is at a distance of △ Q, as △ Q=0, ηmaxWithParameter point A is overlapped.
The invention has the benefit that the remodeling method of the customized energy-efficient water pump of one kind provided by the invention, solutionThe inclined operating condition operation of water pump of having determined, meets design point and operating point actually required coincide, guarantee water pump best efficiency point and operating conditionPoint is overlapped, while not increasing any extra means, securely and reliably.
The present invention is described in detail with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is schematic diagram of the embodiment of the present invention.
Specific embodiment
Embodiment 1:
Scheme that this patent may be implemented only is illustrated with embodiment below, so not is intended to protect it to limit this patentScope, conjunction are first chatted bright.
With reference to Fig. 1, the first preferred embodiment of this patent, a kind of transformation side of customized energy-efficient water pump are shownMethod, method includes the following steps:
(1) water pump operation curve and parameter are set, definition flow is Q, head curve H, efficiency curve η:
(2) live actual motion flow-lift curve parameter value is defined as actual parameter point A；
(3) optimize various specific speed hydraulic models, establish outstanding database of hydraulic model, according to live actual operation parameters point A,Outstanding hydraulic model, customized energy-efficient water pump or impeller is selected to design with the parameter point A of actual motion, flow-efficiencyThe highest efficiency eta of curve Q- ηmaxIt is completely coincident with parameter point A.
Setting device curve H=KQ2, flow-lift curve and device curve H=KQ2Intersect at point A.Set flow-effectThe best efficiency point η of rate curvemaxPoint A with actual requirement is at a distance of △ Q, as △ Q=0, ηmaxIt is overlapped with parameter point A.
The Applicant declares that person of ordinary skill in the field is on the basis of the above embodiments, by above-described embodimentStep is combined with the technical solution of Summary, thus generate new method and record scope of the invention itOne, the application is to keep specification concise, no longer enumerates the other embodiment of these steps.
Concrete principle is as described below:
Such as Fig. 1, has the performance chart of Model of pump: flow-lift curve Q1-H1, flow-efficiency curve Q1-η1(see photo), and scene actual operation parameters point A (Q, H), flow-lift curve can not be with device curve H=KQ2It intersects at a littleA.Existing water pump can only make flow-lift curve Q by Impeller trim or the method for reducing revolving speed2-H2With device curve H=KQ2Intersect at point A.But pump capacity-efficiency curve Q before either cutting1-η1Best efficiency point η1maxWith actual requirementPoint A is at a distance of △ Q1Or Impeller trim reduces pump capacity-efficiency curve Q after revolving speed2-η2Best efficiency point η2maxWith realityThe point A that border requires is at a distance of △ Q2, it is extremely difficult to best efficiency point ηmaxIt is overlapped with A.
The renovation technique of customized energy-efficient water pump establishes outstanding waterpower by optimizing various specific speed hydraulic modelsModel library selects outstanding hydraulic model according to live actual operation parameters point A (Q, H), with the parameter point A (Q, H) of actual motionDesign energy-efficient water pump or impeller, flow-efficiency curve Q- η highest efficiency etamaxIt is completely coincident with parameter point A (Q, H).
The another statement of applicant, implementation method and apparatus structure of the invention that the present invention is explained by the above embodiments,But the invention is not limited to above embodiment, that is, do not mean that the present invention must rely on the above method and structure could be realIt applies.It should be clear to those skilled in the art, any improvement in the present invention, to implementation method selected by the present invention etc.Effect replacement and addition, the selection of concrete mode of step etc., all of which fall within the scope of protection and disclosure of the present invention.
Present invention is not limited to the embodiments described above, all to realize the present invention using structure similar to the present invention and its methodAll embodiments of purpose are within that scope of the present invention.