CN1120303C - Double-driving dirotatory axial flow pump - Google Patents
Double-driving dirotatory axial flow pump Download PDFInfo
- Publication number
- CN1120303C CN1120303C CN 01109653 CN01109653A CN1120303C CN 1120303 C CN1120303 C CN 1120303C CN 01109653 CN01109653 CN 01109653 CN 01109653 A CN01109653 A CN 01109653A CN 1120303 C CN1120303 C CN 1120303C
- Authority
- CN
- China
- Prior art keywords
- impeller
- axial
- preposition
- rearmounted
- driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a double-driving disrotatory axial flow pump. A prepositive impeller and a postpositive impeller are arranged on two motor shafts respectively, a water inlet section is arranged between one motor and a casing body at a front section, and a water outlet section is arranged between the other motor and a casing body at a back section, wherein the two motor shafts, the casing body at the front section and the casing body at the back section are positioned on the same axial lead, and an axial gap is formed between the blade of the prepositive impeller and the blade of the postpositive impeller. The double-driving disrotatory axial flow pump has the characteristics of high lift, high efficiency, small volume, etc. The double-driving disrotatory axial flow pump of the present invention greatly widens the use range of common axial flow pumps, and is a novel pump with wide application, more social values and more economic values.
Description
The present invention relates to a kind of two driving, belong to the pumping liquid equipment technical field the axial flow rotary pump.
The working principle of the common axial-flow pump that has had can be referring to Fig. 1, and axial-flow pump is pumped energy transfer by its suction chamber 1, impeller 2, diffuser 3, Discharging bent-tube 4 to quilt liquid increases its energy, thus the purpose that liquid is pumped in realization.
The main effect and the requirement of its suction chamber are: 1) water is introduced impeller inlet; 2) hydraulic loss is little in the suction chamber; 3) liquid self-absorbing is entered the room when flowing into suction eye, and velocity distribution is wanted evenly.
The working principle of its impeller is: the impeller of axial-flow pump is mainly formed the circular row leaf grating by several blades, an aerofoil profile in the leaf grating as shown in Figure 2, the peripheral velocity of aerofoil profile is U, the absolute velocity of liquid stream is V before the import, then liquid stream is W with respect to the relative velocity of aerofoil profile, and W=V-U, when liquid stream streamed aerofoil profile with relative velocity W, the power that acts on the aerofoil profile was P, then to act on the power on the liquid stream be R to aerofoil profile, and R=-P, R flows work done to liquid, and its power is RU; Just because of this, when flow of liquid was crossed impeller, its kinetic energy and pressure energy had all obtained increase.
Mainly acting as of its diffuser: almost all eliminate the rotation circular rector of liquid, simultaneously partial rotation kinetic energy is converted into pressure energy.
The main effect of its Discharging bent-tube is that liquid is drawn, and partially recycled liquid stream energy.
Above-mentioned axial-flow pump is a kind of vane pump of high specific speed, and its specific speed scope is generally between 500～1600; Its feature is exactly that flow is big, lift is low; Therefore, it often serves as is a kind of " flow, low lift greatly " pump, and its peak rate of flow can reach 70m
2About/s, and lift generally is lower than 25m.Also just because of these characteristics; Therefore, its rotating speed is low, and volume is big.
The objective of the invention is to design a kind of two driving to the axial flow rotary pump, make it be different from common axial-flow pump, the counterrotating each other simultaneously of its preposition impeller and rearmounted impeller, and directly drive by two prime mover respectively, the common liquid that energy transfer is pumped to quilt, its energy is increased, thereby realize pumping the machine of liquid.
The two of the present invention's design drive the axial flow rotary pump, comprise two motors, inlet segment, water exit end, preposition impeller and rearmounted impeller; Preposition impeller and rearmounted impeller are installed in respectively on the motor shaft by guide bearing, and in the piece housing, rearmounted impeller was installed in the piece housing of back before preposition impeller was installed in; Inlet segment is installed between a motor and the preceding piece housing; Water exit end is installed between another motor and the back piece housing; Two motor shafts, preceding piece housing and back piece housings are in same shaft axis; Axial clearance S between preposition impeller blade and the rearmounted impeller blade be in the preposition impeller blade chord length L 35%～65%, the rotating ratio of preposition impeller and rearmounted impeller is 1: 0.65～1.75; The outer diameter D of preposition impeller and rearmounted impeller is 100mm～5000mm, hub ratio D
h: D=1: 0.3～0.7, number of blade Z is 3～7 pieces.
Because two the driving compared characteristics such as have the lift height, efficient height, volume are little with common axial-flow pump to the axial flow rotary pump; Therefore, it has widened the using scope of common axial-flow pump greatly, and can partly substitute mixed flow pump, be a kind of application more extensively, the new pump of richer social value and economic value.All to use two the driving to the axial flow rotary pump in fields such as industrial, agriculture, civilian, military, the cutting-edge science.It specifically is applied in following industry: all trades and professions such as agricultural irrigation, water drainage, town water supply, power industry, the circulatory system, chemical industry, petroleum industry, colliery industry, shipbuilding industry, light textile food industry, war industry, water conservancy construction, aviation industry, the cutting-edge science.
The present invention can also produce the effect of following several respects:
1, two driving convection rotary type axial-flow pump can be regarded the two-stage axial-flow pump as, and it is compared with common axial-flow pump has higher lift; Therefore, its using scope is wider.
2, under same design parameter requires, compare with common axial-flow pump, two driving convection rotary type axial-flow pump rotating speeds are lower; Therefore, its volume is little, compact structure.
3, two driving convection rotary type axial-flow pump can omit original axial restraint stator and coupling, and its axial length is less, and main axe intensity is strengthened.
4, compare with common axial-flow pump, the specific speed of two driving convection rotary type axial-flow pump is bigger, and efficient will improve 3%～8%; Particularly it has stable operation scope more largo, thereby has improved the adaptability and the unit operation efficient of variable parameter operation greatly.
5, the flow field of the impeller of former axial-flow pump and fixed guide vane combined flow channel is " sound " coupled relation; And the flow field of the forward and backward impeller combined flow channel of two driving convection rotary type axial-flow pump is " moving " coupled relations.Because rearmounted impeller has inlet whirl, therefore, can improve the cavitation performance of this pump greatly.Simultaneously, when the preposition impeller of design, can use the design method of high cavitation performance to preposition impeller, and rearmounted impeller is used the design method of low cavitation performance; Thereby improve the cavitation performance and the working life of whole pump.
Description of drawings:
Fig. 1 is common axial flow pump structure schematic representation.
Fig. 2 a and Fig. 2 b are existing axial-flow pump impeller working principles.
Fig. 3 is that two that the present invention designs drive axial flow rotary pump structure schematic representation.
Fig. 4 is preposition impeller, rearmounted impeller size parameter and gap schematic representation.
Fig. 5 is preposition impeller blade (D+D
hThe chord length L of place)/2 schematic representation.
Fig. 1～Fig. 5: the 1st, suction chamber, the 2nd, impeller, the 3rd, diffuser, the 4th, Discharging bent-tube, the 5th, motor, the 6th, inlet segment, the 7th, guide bearing, the 8th, guide bearing support, the 9th, preposition impeller, the 10th, preceding piece housing, the 11st, rearmounted impeller, the 12nd, back piece housing, the 13rd, water exit end, the 14th, common bed.
As shown in Figure 3, the two of the present invention's design drive the axial flow rotary pump, comprise two motors 5, inlet segment 6, water exit end 13, preposition impeller 9 and rearmounted impeller 11; Preposition impeller 9 and rearmounted impeller 11 are installed on the motor shaft by guide bearing 7, and in the piece housing 10, rearmounted impeller 11 was installed in the piece housing 12 of back before preposition impeller was installed in; Two motor shafts, preceding piece housing and back piece housings are in same shaft axis.
As shown in Figure 4 and Figure 5, the two of the present invention's design drive in the axial flow rotary pump, axial clearance S between preposition impeller blade and the rearmounted impeller blade be in the preposition impeller blade chord length L 35%～65%, the rotating ratio of preposition impeller and rearmounted impeller is 1: 0.65～1.75; The outer diameter D of preposition impeller and rearmounted impeller is 100mm～5000mm, hub ratio D
h: D=1: 0.3～0.7, number of blade Z is 3～7 pieces.
As can be seen from the figure, preposition impeller 9, rearmounted impeller 11 respectively by two prime mover 5 in both sides direct reverse direction actuation each other; In order to keep the stability of motor shaft, by guide bearing support 8, utilization guide bearing 7 supports respectively.It is unified integral body that whole unit pump finally connects by common bed 14 with motor; Therefore, whole machine installation is convenient and swift, the structure simple and compact.Relative position between its inlet/outlet can be level or multiple relation such as vertical.
Below be a design example of the present invention:
Design parameter: flow Q=270m
3/ h, lift H=4m, rotation speed n=1440r/min, air horsepower P
a=3.4kW, power of motor P=5.5Kw, efficiency eta=86.6%.Design result: impeller outer diameter D=180mm, hub diameter D
h=80mm, hub ratio D
h/ D=0.444, number of blade Z=4 piece, the axial clearance S=40.8mm between preposition impeller blade and the rearmounted impeller blade, chord length L=84.15mm in the preposition impeller blade, S/L=48.5%.
Claims (1)
1, a kind of two driving the axial flow rotary pump is characterized in that this axial-flow pump comprises two motors, inlet segment, water exit end, preposition impeller and rearmounted impeller; Preposition impeller and rearmounted impeller are installed in respectively on the motor shaft by guide bearing, and in the piece housing, rearmounted impeller was installed in the piece housing of back before preposition impeller was installed in; Inlet segment is installed between a motor and the preceding piece housing; Water exit end is installed between another motor and the back piece housing; Two motor shafts, preceding piece housing and back piece housings are in same shaft axis; Axial clearance S between preposition impeller blade and the rearmounted impeller blade be in the preposition impeller blade chord length L 35%～65%, the rotating ratio of preposition impeller and rearmounted impeller is 1: 0.65～1.75; The outer diameter D of preposition impeller and rearmounted impeller is 100mm～5000mm, hub ratio D
h: D=1: 0.3～0.7, number of blade Z is 3～7 pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01109653 CN1120303C (en) | 2001-03-16 | 2001-03-16 | Double-driving dirotatory axial flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01109653 CN1120303C (en) | 2001-03-16 | 2001-03-16 | Double-driving dirotatory axial flow pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1319726A CN1319726A (en) | 2001-10-31 |
| CN1120303C true CN1120303C (en) | 2003-09-03 |
Family
ID=4658062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01109653 Expired - Fee Related CN1120303C (en) | 2001-03-16 | 2001-03-16 | Double-driving dirotatory axial flow pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1120303C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194375A (en) * | 2018-01-02 | 2018-06-22 | 牛婧 | A kind of engineering machinery for preventing cavitation erosion and power loss |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888732A (en) * | 2015-02-15 | 2016-08-24 | 熵零股份有限公司 | Inter-pressure counter-rotating impeller mechanism |
| CN106704032A (en) * | 2015-11-14 | 2017-05-24 | 熵零股份有限公司 | Engine |
| CN106968963B (en) * | 2017-03-28 | 2020-01-24 | 江苏大学 | Disrotatory mixed flow pump structure |
| CN109185190B (en) * | 2018-09-25 | 2020-11-27 | 西迪技术股份有限公司 | Counter-rotating fan and axial power matching method thereof |
| CN109973394A (en) * | 2019-04-12 | 2019-07-05 | 丹东克隆先锋泵业有限公司 | Double drive second level magnetic drive pumps |
| CN109989923A (en) * | 2019-05-15 | 2019-07-09 | 扬州大学 | A kind of new and effective axial-flow pump device based on rotating rear guide vane body |
| CN110242607B (en) * | 2019-06-13 | 2021-07-02 | 山西方洁路路通净化技术有限公司 | Multistage blade compressor structure without stator blades and capable of rotating independently and accelerating in sequence |
| CN112524041A (en) * | 2020-11-25 | 2021-03-19 | 江苏大学 | Centrifugal pump with pair rotor structure |
-
2001
- 2001-03-16 CN CN 01109653 patent/CN1120303C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194375A (en) * | 2018-01-02 | 2018-06-22 | 牛婧 | A kind of engineering machinery for preventing cavitation erosion and power loss |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1319726A (en) | 2001-10-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1120303C (en) | Double-driving dirotatory axial flow pump | |
| US11346357B2 (en) | Individual axis driven three stage counter rotating axial flow pump | |
| CN1122137C (en) | Built-in type disrotatory axial pump | |
| US20120328412A1 (en) | Pump system | |
| KR20080072847A (en) | Rotor for a rotary machine and a rotary machine | |
| CN2265446Y (en) | High-speed composite impeller centrifugal pump | |
| CN1234972C (en) | High-speed centrifugal vortex pump for low-flow high-lift liquid medium | |
| CN201363320Y (en) | Tangent shearing vortex pump | |
| CN2744859Y (en) | Guide vane type multistage self-suction centrifugal pump with strong gas-liquid separation function | |
| CN1481477A (en) | Feed pump | |
| CN214330911U (en) | Centrifugal water pump and water supply equipment | |
| CN1442047A (en) | Rotating pump up aeration machine | |
| CN200958478Y (en) | Split centrifugal pump | |
| CN115076156B (en) | Full-flow high-efficiency high-speed centrifugal pump | |
| CN216199263U (en) | Axial-flow pump with adjustable wavy front guide vanes | |
| CN212318362U (en) | Impeller structure of submersible pump | |
| CN114810637B (en) | Integrated high-speed direct-driven fan | |
| CN216044668U (en) | Submersible pump | |
| CN2473365Y (en) | New structure of motor blade group | |
| CN2753911Y (en) | Vane pump | |
| CN2500844Y (en) | Single-stage double-sucking double volute submersible electric pump | |
| CN2223372Y (en) | Roots vacuum pump | |
| CN2546654Y (en) | Multi-stage high-lift small flow pump | |
| CN112727777A (en) | Centrifugal water pump and water supply equipment | |
| CN117703780A (en) | High-lift water pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |