CN208236757U - One seed nucleus main pump symmetrical expression non-uniform Distribution guide vane structure - Google Patents
One seed nucleus main pump symmetrical expression non-uniform Distribution guide vane structure Download PDFInfo
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- CN208236757U CN208236757U CN201820425315.4U CN201820425315U CN208236757U CN 208236757 U CN208236757 U CN 208236757U CN 201820425315 U CN201820425315 U CN 201820425315U CN 208236757 U CN208236757 U CN 208236757U
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- 238000009828 non-uniform distribution Methods 0.000 title claims abstract description 21
- 238000005086 pumping Methods 0.000 claims abstract description 22
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007630 basic procedure Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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Abstract
One seed nucleus main pump symmetrical expression non-uniform Distribution guide vane structure, which is characterized in that guide vane includes one identical as the shape of reference guide vane with reference to guide vane and 14 guide vane blades, guide vane blade；It is located on the central axes of pumping chamber with reference to the trailing edge of guide vane, 14 guide vane blades are symmetrical about the central axes of pumping chamber；, as starting point, using the last one guide vane blade as terminal, to make the symmetrical non-uniform Distribution of guide vane in the two sides of the central axes of pumping chamber with reference to guide vane.The utility model proposes symmetrical non-uniform Distribution guide vane structure by adjusting guide vane flow area, the flowing in core main pump is set to be more in line with core main pump shape feature and flowing law, the flow losses inside core main pump are reduced, the performance characteristics for promoting core main pump are finally reached and reduce the purpose of pressure pulse strength.
Description
Technical field
The utility model relates to nuclear powers and impeller machinery technical field, especially a seed nucleus main pump symmetrical expression non-uniform Distribution
Guide vane structure.
Background technique
The safe Development Techniques for grasping three generations's presurized water reactor main pump, core main pump become the advanced pressure water of large-scale three generations not yet in China
The reactor of nuclear power plant production domesticization maximum equipment of difficulty.In order to enter into international market and avoid the limitation for the contract of assigning, it would be desirable to from
It is main to develop the commercial high power core main pump for meeting the requirement of nuclear island primary Ioops power cycle.
The staged experiment result surface of current state's kernel main pump proving ground: the pressure pulse strength of core main pump testpieces
Larger, it is totally unfavorable that this stablizes military service to the long-term safety of core main pump.Therefore, one kind being able to suppress core main pump pressure pulse strength
Special hydraulic model structure have important practical significance.
The three generations core main pump AP1000 of American R & D and the CAP1400 core main pump of the country researched and developed are all made of and uniformly divide
Traditional guide vane structure 3 (as shown in Figure 1) of cloth, and core main pump is a non-fully circumference symmetrical structure on the whole, it is pervious
Designers often have ignored this details in guide vane design process, consider that the nucleus main pump guide vane structure of shape collaboration is set
It is rare for haggling over.
Utility model content
The purpose of the utility model is to provide a kind of novel design, the flowing in core main pump can be made to be more in line with core main pump shape
The flow losses inside core main pump are effectively reduced in shape feature and flowing law, be finally reached promoted core main pump performance characteristics and
Reduce the core main pump symmetrical expression non-uniform Distribution guide vane structure of pressure pulse strength purpose.
The utility model solves technical solution used by prior art problem: a seed nucleus main pump symmetrical expression non-uniform Distribution
Guide vane structure, including pumping chamber, the guide vane wheel disc being installed on inside pumping chamber and the rotary blade being fixed on guide vane wheel disc and
Guide vane, rotary blade are fixed on the center of guide vane wheel disc, and guide vane is the center of circle around the outer circle of rotary blade using the axle center of guide vane wheel disc
It is fixed in week on guide vane wheel disc, and is located at the trailing edge of the guide vane on the circumference of guide vane wheel disc outlet end；The guide vane includes
One identical as the shape of reference guide vane with reference to guide vane and 14 guide vane blades, guide vane blade；With reference to the tail of guide vane
Edge is located on the central axes of pumping chamber, and 14 guide vane blades are symmetrical about the central axes of pumping chamber；To be with reference to guide vane
Starting point, using the last one guide vane blade as terminal, the trailing edge per two adjacent guide vanes is in guide vane wheel disc in the clockwise direction
Central angle corresponding to the circular arc intercepted on the circumference of outlet end is respectively as follows:
θ1=17 °, θ2=17.9711 °, θ3=19.3307 °, θ4=21.2342 °, θ5=23.8990 °, θ6=
27.6297°,θ7=32.8527 °, θ8=40.1650 °, θ9=32.8527 °, θ10=27.6297 °, θ11=23.8990 °, θ12
=21.2342 °, θ13=19.3307 °, θ14=17.9711 °, so that the symmetrical non-uniform Distribution of the guide vane is in pumping chamber
The two sides of axis.
The utility model has the beneficial effects that: the utility model is for the whole non-fully circumference symmetrical structure of core main pump
Feature, the symmetrical non-uniform Distribution guide vane structure proposed here is by adjusting guide vane flow area, so that the stream in core main pump
It is dynamic to be more in line with core main pump shape feature and flowing law, the flow losses inside core main pump are reduced, promotion core is finally reached
The performance characteristics of main pump and the purpose for reducing pressure pulse strength.
Detailed description of the invention
Fig. 1 is the equally distributed guide vane structure figure of traditional blade.
Fig. 2 is the flow channel of axial plane figure of the non-homogeneous guide vane structure of symmetrical expression of the utility model.
Fig. 3 is the non-homogeneous guide vane structure schematic diagram of symmetrical expression of the utility model.
Fig. 4 is the design flow diagram of the utility model.
Fig. 5 is the generation result schematic diagram of the 2nd blade in the utility model.
Fig. 6 is the generation result schematic diagram of i+1 blade in the utility model.
Fig. 7 is the guide vane of the utility model design and the lift comparing result of traditional guide vane.
Fig. 8 is the guide vane of the utility model design and efficiency comparative's result of traditional guide vane.
Fig. 9 is the isogram of the pressure pulse strength of traditional guide vane structure.
Figure 10 is the isogram of the pressure pulse strength of the utility model guide vane structure.
In figure: 1- pumping chamber, the central axes of 2- pumping chamber, 3- tradition guide vane structure, 4- rotary blade, 5- guide vane wheel disc,
6- guide vane wheel cap, 7- axis, 8- refer to guide vane, 9- guide vane blade.
Specific embodiment
The utility model is illustrated below in conjunction with the drawings and the specific embodiments:
Fig. 2 and Fig. 3 show the basic structures of one seed nucleus main pump symmetrical expression non-uniform Distribution guide vane structure of the utility model.
One seed nucleus main pump symmetrical expression non-uniform Distribution guide vane structure including conventional pumping chamber 1, stops leading for guide vane leaf top dielectric leakage
Impeller cover 6, the guide vane wheel disc 5 being installed on inside pumping chamber 1 and the rotary blade 4 and guide vane that are fixed on guide vane wheel disc 5, rotation
Impeller 4 is fixed on the center of guide vane wheel disc 5, and guide vane is the center of circle around the outer of rotary blade 4 with the axle center (i.e. axis 7) of guide vane wheel disc 5
Circumference soldering is fixed on guide vane wheel disc 5 and is located at the trailing edge of guide vane on the circumference of 5 outlet end of guide vane wheel disc.Specifically, it leads
Leaf includes one and refers to guide vane 8 and 14 guide vane blades 9, all the same with reference to guide vane 8 and 9 shape of guide vane blade；With reference to leading
The trailing edge of blade 8 is located on the central axes 2 of pumping chamber 1, and 14 guide vane blades 9 are symmetrical about the central axes 2 of pumping chamber 1；
It is terminal with the last one guide vane blade 9 to be starting point with reference to guide vane 8, in the clockwise direction per two adjacent guide vanes
The circular arc that is intercepted on the circumference of 5 outlet end of guide vane wheel disc of trailing edge corresponding to central angle be respectively as follows:
θ1=17 °, θ2=17.9711 °, θ3=19.3307 °, θ4=21.2342 °, θ5=23.8990 °, θ6=
27.6297°,θ7=32.8527 °, θ8=40.1650 °, θ9=32.8527 °, θ10=27.6297 °, θ11=23.8990 °, θ12
=21.2342 °, θ13=19.3307 °, θ14=17.9711 °, so that the symmetrical non-uniform Distribution of guide vane is in 1 central axes 2 of pumping chamber
Two sides.
The utility model proposes guide vane structure design distribution form by adjusting blade and implement core main pump hydraulic
The promotion of energy, and core main pump pressure pulse strength is effectively reduced.
Fig. 4 shows the basic procedure of guide vane design method.One seed nucleus main pump symmetrical expression non-uniform Distribution of the utility model
The guide vane design method of guide vane structure, comprising the following steps:
S1, it determines the installation site for referring to guide vane 8: a piece of guide vane conduct is set at 2 position of the central axes of pumping chamber 1
With reference to guide vane 8, and meet this with reference to guide vane 8: being located on the central axes 2 of pumping chamber 1 with reference to the trailing edge of guide vane 8；It will
The 1st blade is denoted as with reference to guide vane 8；
S2, determine symmetrical non-uniform Distribution guide vane main control variable, the main variable that controls includes the 2nd blade
Rotation generate angle θ1, the non-uniform Distribution adjustment factor m and regulated variable d of guide vane；The rotation of 2nd blade generates
Angle θ1It is right for circular arc that the trailing edge of the trailing edge of the 2nd blade and the 1st blade intercepts on the circumference of 5 outlet end of guide vane wheel disc
The central angle answered；2nd blade is located at the clockwise direction side of the 1st blade and adjacent with the 1st blade；
The following steps are included:
A1, determine that the rotation of the 2nd blade generates angle θ1=17 °；
A2, the non-uniform Distribution adjustment factor m=1.4 for determining guide vane；
A3, it calculates determining regulated variable d: generating angle θ in the rotation of fixed 2nd blade1It is non-homogeneous with guide vane
On the basis of the numerical value of profile adjustment Coefficient m, unique specific value that regulated variable d is obtained by following formula is 0.6934:
S3, the rotation generation angle θ determined between remaining 13 guide vane is calculatedi, wherein 2≤i≤14, i ∈ N；Described i-th+
The rotation of 1 blade generates angle θiIt is i+1 blade and the trailing edge of adjacent i-th blade in 5 outlet end of guide vane wheel disc
Central angle corresponding to the circular arc intercepted on circumference；The following steps are included:
B1, it is calculated by the following formula the rotation generation angle θ for determining the 3rd blade to the 9th bladei, wherein 2≤i≤
8, i ∈ N:
By by θ1=17 °, m=1.4 and d=0.6934 are substituted into, and the rotation for obtaining the 3rd to the 9th blade generates angle θ2,
θ3,θ4,θ5,θ6,θ7,θ8Value it is as shown in table 1:
The rotation of the 3rd to the 9th blade of table 1 generates angle calculated result
| Blade number | Rotation generates angle | Angle value (°) |
| 3 | θ2 | 17.9711 |
| 4 | θ3 | 19.3307 |
| 5 | θ4 | 21.2342 |
| 6 | θ5 | 23.8990 |
| 7 | θ6 | 27.6297 |
| 8 | θ7 | 32.8527 |
| 9 | θ8 | 40.1650 |
B2, the rotation generation angle θ for determining the 10th blade to the 15th blade is calculatedi, wherein 9≤i≤14, i ∈ N:
θi=θ16-i；
The rotation for obtaining the 10th to the 15th blade generates angle θ9,θ10,θ11,θ12,θ13,θ14Value it is as shown in table 2:
The rotation of the 10th to the 14th blade of table 2 generates angle calculated result
| Blade number | Rotation generates angle | Angle value (°) |
| 10 | θ9 | 32.8527 |
| 11 | θ10 | 27.6297 |
| 12 | θ11 | 23.8990 |
| 13 | θ12 | 21.2342 |
| 14 | θ13 | 19.3307 |
| 15 | θ14 | 17.9711 |
S4, angle θ is generated based on the obtained rotation of step S2 and step S3i, wherein 1≤i≤14, i ∈ N are carried out symmetrical
The modeling of non-uniform Distribution guide vane, comprising the following steps: (as shown in Figure 4)
C1, as shown in Figure 5: generate the 2nd blade: be directed to fixed 1st blade, take and the 1st blade construction phase
Same guide vane blade 9 is used as the 2nd blade, it is placed in the clockwise direction side of the 1st blade around the center of guide vane wheel disc 5
And it is adjacent with the 1st blade, then the 2nd blade is rotated to the trailing edge of the trailing edge of the 2nd blade and the 1st blade in guide vane
Central angle corresponding to the circular arc intercepted on the circumference of 5 outlet end of wheel disc is θ1Position, be fixed on guide vane wheel disc 5, the 2nd
Blade, which generates, to be completed；
C2, in turn, as shown in Figure 6: the generation of i+1 blade: for generated i-th blade, wherein i > 1,
It takes identical with i-th blade structure guide vane blade 9 to be used as i+1 blade, and it is placed in the around the center of guide vane wheel disc 5
The clockwise direction side of i blade is simultaneously adjacent with i-th blade, then rotates i+1 blade to i+1 blade
Central angle corresponding to the circular arc intercepted on the circumference of 5 outlet end of guide vane wheel disc between trailing edge and the trailing edge of i-th blade is
θiPosition, be fixed on guide vane wheel disc 5, i+1 blade generate complete；
C3, step C2 is repeated, until i value reaches 14, obtains the guide vane structure of symmetrical non-uniform Distribution.
For the utility model for the whole non-fully circumference symmetrical structure feature of core main pump, the symmetrical expression proposed here is non-
Even distribution guide vane structure by adjusting guide vane flow area so that the flowing in core main pump be more in line with core main pump pattern feature and
Flowing law reduces the flow losses inside core main pump.Fig. 7 and Fig. 8 is traditional to be uniformly distributed guide vane structure and this respectively
The efficiency characteristic of the non-homogeneous guide vane structure of symmetrical expression of utility model and the comparing result of pressure characteristic, from two figures: this reality
The performance characteristics of core main pump can be made to obtain significantly within the scope of 0.8~1.2 design discharge with novel proposed new construction
It is promoted.The isogram of the pressure pulse strength of traditional guide vane structure and the utility model is set forth in Fig. 9 and Figure 10, passes through
Comparison has it can be found that the new construction that the utility model is proposed can significantly reduce the pressure pulse strength in core main pump
Help the military service steady in a long-term of core main pump.
It, cannot the above content is specific optimal technical scheme further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (1)
1. a seed nucleus main pump symmetrical expression non-uniform Distribution guide vane structure, including pumping chamber, the guide vane wheel being installed on inside pumping chamber
Disk and the rotary blade and guide vane being fixed on guide vane wheel disc, rotary blade are fixed on the center of guide vane wheel disc, and guide vane is with guide vane
The axle center of wheel disc is that the center of circle is fixed on guide vane wheel disc around the excircle of rotary blade, and the trailing edge of the guide vane is made to be located at guide vane
On the circumference of wheel disc outlet end；It is characterized in that, the guide vane, which includes one, refers to guide vane and 14 guide vane blades, guide vane leaf
Piece is identical as the shape of reference guide vane；It is located on the central axes of pumping chamber with reference to the trailing edge of guide vane, 14 guide vane blades
Central axes about pumping chamber are symmetrical；Using reference guide vane as starting point, using the last one guide vane blade as terminal, in up time
The center of circle corresponding to the circular arc that trailing edge on needle direction per two adjacent guide vanes intercepts on the circumference of guide vane wheel disc outlet end
Angle is respectively as follows:
θ1=17 °, θ2=17.9711 °, θ3=19.3307 °, θ4=21.2342 °, θ5=23.8990 °, θ6=27.6297 °, θ7
=32.8527 °, θ8=40.1650 °, θ9=32.8527 °, θ10=27.6297 °, θ11=23.8990 °, θ12=21.2342 °,
θ13=19.3307 °, θ14=17.9711 °, so that the symmetrical non-uniform Distribution of the guide vane is in the two sides of pumping chamber central axes.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457907A (en) * | 2018-03-28 | 2018-08-28 | 大连理工大学 | One seed nucleus main pump symmetrical expression non-uniform Distribution guide vane structure and guide vane design method |
| CN113139248A (en) * | 2021-04-19 | 2021-07-20 | 大连理工大学 | Design method of nuclear main pump model with asymmetric transition section structure |
-
2018
- 2018-03-28 CN CN201820425315.4U patent/CN208236757U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457907A (en) * | 2018-03-28 | 2018-08-28 | 大连理工大学 | One seed nucleus main pump symmetrical expression non-uniform Distribution guide vane structure and guide vane design method |
| CN113139248A (en) * | 2021-04-19 | 2021-07-20 | 大连理工大学 | Design method of nuclear main pump model with asymmetric transition section structure |
| CN113139248B (en) * | 2021-04-19 | 2024-03-22 | 大连理工大学 | Nuclear main pump model design method with asymmetric transition section structure |
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