CN108533499A - A kind of multistage pump modular design method of differentiated demand quick response - Google Patents
A kind of multistage pump modular design method of differentiated demand quick response Download PDFInfo
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- CN108533499A CN108533499A CN201810069973.9A CN201810069973A CN108533499A CN 108533499 A CN108533499 A CN 108533499A CN 201810069973 A CN201810069973 A CN 201810069973A CN 108533499 A CN108533499 A CN 108533499A
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- 238000013461 design Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000004044 response Effects 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 4
- 230000003631 expected effect Effects 0.000 claims description 4
- 230000014509 gene expression Effects 0.000 claims description 4
- 230000004069 differentiation Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 6
- 210000004907 gland Anatomy 0.000 description 5
- 238000012856 packing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/50—Building or constructing in particular ways
- F05D2230/51—Building or constructing in particular ways in a modular way, e.g. using several identical or complementary parts or features
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Optimization (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Mathematical Analysis (AREA)
- Computational Mathematics (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to pump design and manufacture field, and in particular to a kind of multistage pump modular design method of differentiated demand quick response.Technical solution is：The shaft coupling of multistage pump, first stage impeller, guide vane, secondary impeller, final stage guide vane, final stage guide vane, guide blade sleeve, each parts such as pump shaft can be changed replacement according to specific requirement, being customized can design according to demand, differentiated demand rapid response manufacturing is carried out in mass customization, substantially shorten the design and manufacture time of product, it may be convenient to product component is replaced, it is easy to repair, it can upgrade on the basis of existing, save fund.
Description
Technical Field
The invention belongs to the field of pump design and manufacture, and particularly relates to a modular design method for a multi-stage pump with differentiated requirement quick response.
Background
The multistage pump is a pump with two or more impellers connected in series on a shaft, has the characteristics of large flow and high lift, and is widely applied to industries such as electric power, metallurgy, fire fighting, chemical engineering, buildings and the like. The multi-stage pump is widely used, application scenes are diversified, and the design and manufacture of the multi-stage pump are challenged, the traditional design and manufacture is designed and produced according to orders, when the order customization requirement is high, enterprises are difficult to complete the design and production in a short time, the development of the enterprises is seriously influenced, and the industries of automobiles, airplanes, computers and the like have a solution scheme of modular design, but the application in the pump industry is not much.
The invention patent with application number 201610794838.1 discloses a modularized vane pump, which comprises a pump body, a rotor, vanes and a pump shaft, wherein the inner cavity of the pump body is provided with vane pump modularized units, and simultaneously, modules with different widths, namely the vanes with different widths are adopted, so that different levels of flow can be obtained, the generalization degree of the pump is improved, only the modules need to be replaced during maintenance, the operation is simple and rapid, and the production cost is saved, but the invention is only an application scene of modularized design, and does not solve the problem of rapid response design of the modules during high customization; the invention patent with application number 201110129415.5 discloses a modular pump unit for a multistage pump, which avoids the complexity of the design of a main shaft of the multistage pump, can realize modular processing production, widens the application range of the multistage pump, but has single modularization degree and does not provide a universal modularization method.
Disclosure of Invention
In order to solve the existing problems, the invention provides a modular design method of a multi-stage pump with quick response to differential requirements, provides a determination process and a method for determining modules of the multi-stage pump, and can quickly respond to the differential requirements.
The technical scheme adopted for realizing the purpose is as follows:
a multi-stage pump modularization method for quickly responding to differentiated demands is mainly characterized by comprising the following steps: the shaft coupling packs, and the impeller, the stator, O type sealing washer, each spare part of multistage pumps such as final stage stator, pump shaft can change the replacement according to concrete requirement, can carry out the customization design according to the demand, carries out differentiation demand quick response manufacturing under big customization condition in batches, and the essential step of function more than realizing is as follows:
s1, design objective: determining the purpose, use scene and the like of the multi-stage pump.
Based on the understanding of the design target, the requirement is converted into the production constraint condition by establishing a material element analysis model of the target requirement, the design target can be quantized, the value range [ x, y ] of the quantity value M of each design target characteristic is given, the rationality of each design target can be judged by combining the following formula, the influence of subjective factors on the design is reduced, and the material element expression of each module of the multi-stage pump is as follows:
p-function module, a general name of modules capable of realizing specific functions;
v-features of the function module;
m-the magnitude of the feature, M ∈ [ x, y ], [ x, y ] is determined by the particular feature.
S2, main module: determining a main module of the multi-stage pump according to the design objective, the main module comprising: a base module, a generic module and a custom module, the division of the main module of the multi-stage pump being determined by the degree of customization;
the custom module is a major component of the multi-stage pump, having a direct impact on design objectives. The component parts that are relevant to the design objective should be divided together when determining the custom module; the universal module is a main component of the multistage pump, but is less influenced by design goals; the basic module is the most basic part in the design process of the multi-stage pump and is slightly influenced by the design target.
CD with fixed systemiThe determination method of (2) is as follows:
CDi＝0.7EIi+0.3CIi，i＝1,2，…，n (2)
in the formula:
CDi-degree of customization, degree of customization of the module, including the effectiveness index and the cost index;
EIi-an effectiveness index representing the expected relative satisfaction with the customization module;
CIi-a cost index representing the added cost of customization of the module versus generalization;
CD of the same prescriptioniThe custom module is more than or equal to 0.7, and when the custom system is 0.7>CDiIs a universal module when not less than 0.3, and is a customized CDi<0.3 is the basic module.
Wherein,
(1) effect index EIi
In the formula:
CEij-an expected customization effect;
ui-the number of functional requirements that the module can meet;
n is the number of modules;
(2) anticipating custom effects CEij
In the formula:
FRi-the expected effect of module i;
FRj-the expected effect of module j;
(3) cost index CIi
In the formula:
the generalization cost of the module i is fixed;
the customization cost of the module i varies depending on the materials, shapes, processing techniques, etc. selected for the customization of the module.
S3, variable: determining variables, impeller number n, impeller outer diameter d, having an influence on the custom module, the generic module and the base modulehDiameter of inlet DjWidth of outlet b2Number of blades z, determining the value range [ x, y ] of the magnitude M of each feature]When the value of the variable M is not in the range, a new custom meta-module is needed, and the more custom meta-modules are, the higher the manufacturing cost is;
the number of custom modules is no more than 30% of the total number of master modules.
S4, meta-module: finally, the meta-module used for manufacturing and assembling is determined.
The component module is the most basic part for manufacturing the multi-stage pump, and is classified according to materials, shapes, processing techniques and the like to establish a feature set Mi＝{m1，m2，…，mnAnd when feature sets of different meta-modules are similar, performing generalized processing on the different meta-modules to form a universal module, and then performing differentiated processing on the basis of the generalization.
The invention has the beneficial effects that:
can carry out the quick response design to multistage pump, shorten the manufacturing time of design of product by a wide margin, can be convenient change product spare part, the maintenance of being convenient for can upgrade on current basis and upgrade, saves the fund.
Drawings
Fig. 1 is a structural view of a multistage pump.
Fig. 2 is a schematic diagram of a tree structure.
Fig. 3 is a multi-stage pump modular network topology.
Wherein: 1. a coupling; 2. a bearing member A; 3. a bolt; 4. a filler; 5. a water inlet section; 6. a first stage impeller; 7. a middle section; 8. a guide vane; 9. a secondary impeller; 10. a water outlet section; 11. a stuffing box; 12. a cooling chamber gland; 13. a packing gland; 14. a bearing component B; an O-shaped sealing ring; 16. a last stage guide vane; 17. a last stage impeller; 18. a guide vane sleeve; 19. a seal ring; 20. and a pump shaft.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and detailed description, but the scope of the present invention is not limited thereto.
As shown in fig. 1, the three-stage centrifugal pump is mainly characterized by comprising a coupling (1), a bearing part a, a bolt (3), a packing (4), a water inlet section (5), a first-stage impeller (6), a middle section (7), a guide vane (8), a secondary impeller (9), a water outlet section (10), a packing box body (11), a cooling chamber gland (12), a packing gland (13), a bearing part b, an O-shaped sealing ring (15), a last-stage guide vane (16), a last-stage impeller (17), a guide vane sleeve (18), a sealing ring (19), a pump shaft and other parts which can be changed and replaced according to specific requirements, customized design can be performed according to requirements, and rapid response manufacturing of different requirements can be performed under the condition of large-batch customization.
As shown in fig. 2, a schematic diagram of a tree structure of a modular design is shown, the whole pump is a design target of a multistage pump, the design target is divided into a plurality of modules, each module is divided into specific sub-modules, and the sub-modules can be further divided into sub-modules to form a tree structure.
As shown in fig. 3, which is a schematic diagram of a modular network of a multi-stage pump, according to the above method, for example, the impellers of the multi-stage pump can be customized, the impellers include (6) a first-stage impeller, (9) a second-stage impeller, (17) a last-stage impeller, and (9) the second-stage impeller can also be customized according to the requirement, and the physical element expressions of the impellers of the multi-stage pump are as follows:
the first-stage impeller, the second-stage impeller and the last-stage impeller can write corresponding object element expressions according to requirements.
According to the calculation method of the customized system, each part of the multistage pump can be divided into a basic module, a general module and a customized module, and when the customized system is a CDiThe custom module is more than or equal to 0.7, and when the custom system is 0.7>CDiIs a universal module when not less than 0.3, and is a customized CDi<0.3 is the basic module. For example, (6) a first-stage impeller, (9) a second-stage impeller, (17) a last-stage impeller and (8) guide vanes are custom modules, (1) a coupling, (2) a bearing part A, (11) a cooling chamber gland, (13) a bearing part B, (16) a guide vane sleeve, (18) a pump shaft and the like are universal modules, (3) bolts, (14) an O-shaped sealing ring and (17) a sealing ring are basic modules.
After the basic module, the general module and the custom module are determined, variables can be determined according to specific requirements, such as the number n of impeller stages is 3-5 stages, and the outer diameter d of the impellerhIs 180-220mm, and the diameter D of the inletj110-230-45mm, and 5-7 blades.
After the meta-module is determined, when in processing and manufacturing, the basic module such as (3) bolt and the like can be manufactured in large batch, and the customized module such as impeller and the like or the general module can be firstly manufactured according to (6)Establishing a feature set M by using a stage impeller, (9) a secondary impeller, and (17) a final impelleri＝{m1，m2，…，mnAnd as the materials, the shapes, the processing technologies and the like are very close, the universal processing can be firstly carried out to form a universal module, and then the differential processing is further carried out according to the requirements.
It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (6)
1. A design method of a multi-stage pump module with differentiated demand quick response is characterized by comprising the following steps: the shaft coupling of multistage pump, first-stage impeller, the stator, secondary impeller, the last-stage stator, the guide vane cover, each spare part of pump shaft changes the replacement according to concrete requirement, can carry out differentiation demand quick response manufacturing under big customization condition in batches, and the main step of function more than realizing is as follows:
s1, design objective: determining the use and use scene of the multi-stage pump, establishing a matter element analysis model of target requirements, converting the requirements into production constraint conditions, quantifying the design targets, and judging the rationality of the design targets by combining the matter element analysis model;
s2, determining a main module of the multi-stage pump according to the design objective, the main module comprising: a basic module, a general module and a custom module; the division of the main module of the multi-stage pump is determined by the degree of customization;
s3, variable: determining variables, impeller number n, impeller outer diameter d, having an influence on the custom module, the generic module and the base modulehDiameter of inlet DjWidth of outlet b2Number of blades z, determining the value range [ x, y ] of the magnitude M of each feature]；
S4, meta-module: finally, the meta-module used for manufacturing and assembling is determined.
2. The method of claim 1, wherein the step of designing a multi-stage pump module with rapid response to differentiated demand comprises: in step S1, the value range [ x, y ] of the magnitude M of each design target feature, and the expression of the object analysis model of the multi-stage pump module is:
p-function module, a general name of modules capable of realizing specific functions;
v-features of the function module;
m-the magnitude of the feature, M ∈ [ x, y ], [ x, y ] is determined by the particular feature.
3. The method of claim 1, wherein the step of designing a multi-stage pump module with rapid response to differentiated demand comprises: in step S2, the method for determining the customization level is as follows:
(1) CD with fixed systemi
CDi＝0.7EIi+0.3CIi，i＝1,2，…，n (2)
In the formula:
CDi-degree of customization, degree of customization of the module, including the effectiveness index and the cost index;
EIi-an effectiveness index representing the expected relative satisfaction with the customization module;
CIi-a cost index representing the added cost of customization of the module versus generalization;
CD of the same prescriptioniThe custom module is more than or equal to 0.7, and when the custom system is 0.7>CDiIs a universal module when not less than 0.3, and is a customized CDi<0.3 is the basic module.
4. A method of designing a rapid response multiple stage pump module to differentiated demand as recited in claim 3 wherein:
(1) effect index EIiComprises the following steps:
in the formula:
CEij-an expected customization effect;
ui-the number of functional requirements that the module can meet;
n is the number of modules;
(2) anticipating custom effects CEijComprises the following steps:
in the formula:
FRi-the expected effect of module i;
FRj-the expected effect of module j;
(3) cost index CIiComprises the following steps:
in the formula:
generalization of Module iThe cost and the numerical value are relatively fixed;
the customization cost of the module i varies depending on the materials, shapes, processing techniques, etc. selected for the customization of the module.
5. The method of claim 1, wherein the number of custom modules is no greater than 30% of the total number of main modules.
6. The method as claimed in claim 1, wherein the meta-module is the most basic component of the multi-stage pump, and the meta-module is classified according to material, shape, processing technique, etc. to create the feature set M in step S4i＝{m1，m2，…，mnAnd when feature sets of different meta-modules are similar, performing generalized processing on the different meta-modules to form a universal module, and then performing differentiated processing on the basis of the generalization.
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Citations (4)
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|---|---|---|---|---|
| CN102182691A (en) * | 2011-05-09 | 2011-09-14 | 中国石油大学(华东) | Modular pump unit used in multi-stage pump |
| WO2012148649A2 (en) * | 2011-04-28 | 2012-11-01 | Axon Ep, Inc. | Modular pump design |
| CN103870635A (en) * | 2014-02-24 | 2014-06-18 | 上海宇航系统工程研究所 | Rapid design, analysis and optimization system of large-scale structure based on modularization |
| CN106438345A (en) * | 2016-08-25 | 2017-02-22 | 陈兆红 | Modularized vane pump |
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- 2018-01-24 CN CN201810069973.9A patent/CN108533499A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012148649A2 (en) * | 2011-04-28 | 2012-11-01 | Axon Ep, Inc. | Modular pump design |
| CN103732920A (en) * | 2011-04-28 | 2014-04-16 | 阿克森Ep股份有限公司 | Modular pump design |
| CN102182691A (en) * | 2011-05-09 | 2011-09-14 | 中国石油大学(华东) | Modular pump unit used in multi-stage pump |
| CN103870635A (en) * | 2014-02-24 | 2014-06-18 | 上海宇航系统工程研究所 | Rapid design, analysis and optimization system of large-scale structure based on modularization |
| CN106438345A (en) * | 2016-08-25 | 2017-02-22 | 陈兆红 | Modularized vane pump |
Non-Patent Citations (2)
| Title |
|---|
| 江平宇主编: "《计算机辅助设计与制造技术》", 28 February 2010 * |
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Application publication date: 20180914 |