WO2023077648A1 - Self-adaptive design method for bulb tubular pump guide vane, and bulb tubular pump guide vane - Google Patents
Self-adaptive design method for bulb tubular pump guide vane, and bulb tubular pump guide vane Download PDFInfo
- Publication number
- WO2023077648A1 WO2023077648A1 PCT/CN2021/142272 CN2021142272W WO2023077648A1 WO 2023077648 A1 WO2023077648 A1 WO 2023077648A1 CN 2021142272 W CN2021142272 W CN 2021142272W WO 2023077648 A1 WO2023077648 A1 WO 2023077648A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- guide vane
- outlet
- angle
- profile
- flow
- Prior art date
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/548—Specially adapted for liquid pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Definitions
- the invention relates to an adaptive design method for guide vanes of bulb tubular pumps and guide vanes of bulb tubular pumps, belonging to the technical field of fluid machinery.
- the bulb tubular pump is an economical pump suitable for occasions with low head and large flow. It has the advantages of straight flow path, small hydraulic loss, and high installation efficiency. It has played an important role in large-scale water transfer projects such as South-to-North Water Diversion Projects in my country.
- the bulb tubular pump device is mainly composed of five parts: water inlet channel, impeller section, guide vane section, bulb body section and water outlet channel.
- the water flow flows into the impeller from the water inlet channel, and the energy is obtained through the high-speed rotating impeller.
- the guide vane body further converts a part of the peripheral velocity of the water flowing out of the impeller, that is, the velocity ring, into pressure energy, so that the water flows smoothly through the axial direction.
- the bulb body and the water outlet channel is mainly composed of five parts: water inlet channel, impeller section, guide vane section, bulb body section and water outlet channel.
- the guide vane structure used in the tubular flow pump is generally designed by the traditional axial flow pump guide vane design method. Due to the limitation of the size of the bulb tubular pump motor, the guide vane hub busbar between the impeller and the bulb body is often the same as the The center line of the pump shaft has a certain included angle, so that the flow in the guide vane is no longer the axial flow in the traditional axial flow pump, but the diffusion flow composed of radial flow and axial flow.
- This pump device structure Due to the flow difference caused by the characteristics, the guide vane designed by the traditional method has a low match with the bulb tubular pump structure, and its hydraulic performance is difficult to meet the requirements of a large bulb tubular pump device.
- the vane body will not only cause a certain hydraulic loss, but also affect the flow state in the bulb body section and the water outlet channel after it, and further affect the entire tubular pump device.
- the hydraulic performance has a non-negligible impact.
- the present invention proposes a self-adaptive diffusion guide vane body structure, weakens or even eliminates the bad flow state in the guide vane body, and improves the hydraulic performance of the bulb tubular pump device. Guide vane design method.
- the present invention provides a self-adaptive design method for guide vanes suitable for large bulb tubular pumps and guide vanes of bulb tubular pumps.
- the technical solution adopted by the present invention is: a self-adaptive design method for the guide vane of the bulb tubular pump, which determines the axial view of the guide vane according to the structure of the tubular pump device, and aligns the inlet and outlet edges of the guide vane in the radial direction Equally divided to determine the number of guide vane flow surfaces; calculate the guide vane inlet angle ⁇ 3 on each flow surface according to the basic structural parameters of the guide vane according to the axial flow pump guide vane design method, and based on the guide vane axial surface diagram, ensure that each flow surface
- the height H of the guide vane line is constant, and for the structure of the guide vane body under different hub divergence angles, according to the linear or nonlinear law, the guide vane line on each flow surface is given an outlet placement angle that gradually increases from the hub to the rim.
- formula (1) under the premise that the guide vane profile height H remains unchanged, the chord length l of the guide vane profile line on each
- R is the radius of the section line of the guide vane airfoil, mm.
- the outlet setting angle ⁇ 0 of the guide vane profile on the flow surface of the hub side is 79° ⁇ 82°;
- the outlet setting angle ⁇ 0 of the guide vane profile on the flow surface on the hub side is 75° to 78°.
- the angle difference between the outlet installation angle of the guide vane profile on the hub side and the installation angle of the guide vane profile outlet on the rim side is 10°;
- r* represents the dimensionless relative radius from the hub to the rim of the guide vane body, and its range is 0 to 1;
- ⁇ 1 (r*) is the law of linear incremental change
- ⁇ 2 (r*) and ⁇ 3 (r* ) is a nonlinear increasing change rule.
- ⁇ (r*) is the change law of the guide vane outlet placement angle from the hub to the rim with the relative radius
- ⁇ i (r*) is the increasing law of three different guide vane outlet placement angles.
- the value of the outlet placement angle of the guide vane profile line on the flow surface on the hub side can be adjusted to match the increasing law of the different guide vane outlet angles, so as to obtain the diffusion angle suitable for the guide vane body
- the guide vane outlet angle value of the flow field is
- the present invention also provides a guide vane of a bulb tubular pump, the number of vanes of the guide vane of the tubular pump is 7 pieces, and the placement angle of the guide vane outlet gradually increases from the hub side to the wheel rim side according to the law shown in formula (7),
- the self-adaptive design method for guide vanes of bulb tubular pumps in the present invention solves the problem that guide vanes of traditional axial flow pumps do not adapt to the diffusion flow of guide vanes of tubular pumps.
- the guide vane that adapts to the diffuse flow of the guide vane body can be adaptively designed according to the method, so that Weaken or even eliminate the vortex around the root of the guide vane outlet, reduce the hydraulic loss of the guide vane, ensure the flow stability in the bulb body section and the water outlet channel, and follow the guide vane outlet angle along the direction from the hub to the rim according to a certain law. Increase, can ensure the effect of guide vane recovery speed circulation.
- the guide vane self-adaptive design method of the present invention can improve the hydraulic performance of the bulb tubular pump device and increase its flow stability.
- Figure 1 is a single-line schematic diagram of a large bulb tubular pump device.
- Fig. 2 is an axial view of the guide vane of the embodiment of the guide vane design method of the present invention.
- Fig. 3 is a schematic diagram of the airfoil parameters of the guide vane of the tubular pump.
- Fig. 4 is a schematic diagram of the change law of the outlet angle of the guide vane according to the guide vane design method of the present invention.
- Fig. 5 is a comparison diagram of the airfoil of the guide vane designed by the embodiment of the guide vane design method of the present invention and the traditional guide vane design method.
- Fig. 6 is a schematic diagram of an assembly structure of an embodiment of the guide vane design method of the present invention.
- Fig. 7 is a comparison diagram of the flow field at the relative radius 0.1 of the guide vane designed by the embodiment of the guide vane design method of the present invention and the traditional guide vane design method.
- Embodiment Taking a large-scale bulb through-flow model pump device as an example, as shown in schematic diagram 1, the model pump mainly includes a water inlet channel 1, an impeller 2, a guide vane 3, a bulb body 4 and an outlet channel 5.
- the model pump device The outer diameter of the impeller is 300mm, the rotational speed is 1450r/min, the flow rate under the rated working condition is 410.9L/s, and the lift under the rated working condition is 4.11m.
- the axial plane diagram of the guide vane is determined, and the flow surface is divided. As shown in Figure 2, there are 5 flow surfaces in total.
- Figure 3 is a schematic diagram of the main parameters of the guide vane airfoil profile.
- the inlet placement angles of the guide vane profiles on different flow surfaces are calculated using the traditional guide vane design method.
- the unilateral divergence angle of the guide vane hub side is determined to be 14°.
- the outlet placement angle ⁇ 0 80° of the guide vane profile line on the flow surface of the guide vane hub side is selected.
- the three kinds of guide vane outlets designed The law of incremental change of angle is shown in formulas (1)-(3), and the corresponding schematic diagram is shown in Figure 4
- r* represents the dimensionless relative radius from the hub to the rim of the guide vane body, and its range is 0 to 1;
- the increment of the surface guide vane outlet placement angle with the change of the relative radius, and its range is 0° ⁇ 10°.
- ⁇ 1 (r*) is the law of linear incremental change
- ⁇ 2 (r*) and ⁇ 3 (r*) are the law of nonlinear incremental change.
- the guide vane design is carried out by selecting the increasing law of the guide vane outlet angle of ⁇ 1 (r*). At this time, the change rule of the guide vane outlet angle from the hub to the rim can be expressed as
- the outlet placement angle of the guide vane profile on the corresponding flow surface can be calculated on the basis of formula (4) according to the dimensionless relative radius value.
- the various The chord length of the guide vane profile on the flow surface According to the calculated inlet placement angles of the guide vane profiles of each flow surface, the determined outlet placement angles and the axial height of the guide vane profiles determined from the guide vane axial plane diagram, the various The chord length of the guide vane profile on the flow surface.
- the radius of each flow surface guide vane profile is calculated by formula (6), and then the radii of each flow surface guide vane are drawn. Work surface profile.
- R is the radius of the section line of the guide vane airfoil, mm.
- FIG. 5 shows the profile of the guide vane airfoil obtained by the traditional design method and the profile of the guide vane airfoil designed in this example with the outlet angle conforming to the law of ⁇ 1 (r*).
- the method adopts the axial surface shape of the guide vane shown in Fig. 2 .
- Fig. 6 is a schematic diagram of the guide vane body assembly structure of the embodiment of the self-adaptive design method for the guide vane of the tubular pump according to the present invention, which mainly includes the guide vane outer shell 6, the guide vane blade axial surface 7, the conical guide vane hub 8, The guide vane blades are connected to the hub and the outer casing, so that the guide vane section is a whole.
- the inlet of the guide vane section is connected with the impeller chamber through bolts, and the outlet of the guide vane section is connected with the bulb body section through bolts.
- Figure 7 is a comparison of the flow fields at the relative radius of 0.1 near the hub side in the guide vanes of the two different tubular pumps shown in Figure 5, and the flow field on the hub side of the guide vane designed by the guide vane design method of the tubular pump according to the present invention
- the flow state is better, the degree of shedding and vortex around the guide vane root is reduced, and the hydraulic loss of the guide vane section itself is reduced.
Abstract
A self-adaptive design method for a bulb tubular pump guide vane (3), and a bulb tubular pump guide vane (3). The method comprises: on the basis of an axial plane diagram of the guide vane (3), and on the premise of ensuring that an axial height of the guide vane (3) is unchanged, applying a guide vane outlet angle change rule to a guide vane body under different hub diffusion angles. When the diffusion angle of the guide vane body changes due to a device structure, by means of adjusting the value of a placement angle of a guide vane profile line outlet on a hub side and in combination with the designed guide vane outlet angle progressive increase rule, the shape of the guide vane (3) adapting to the flow in the guide vane body of a bulb tubular pump can be quickly and conveniently designed. According to the guide vane (3) designed by means of the design method, the phenomena of vortexes and flow separation at a vane root of an outlet of the guide vane (3) can be reduced or eliminated, the hydraulic loss of the guide vane (3) is reduced, the matching of flow fields of a guide vane segment and a bulb body segment is improved, the flow stability in the bulb body segment and a water outflow channel is guaranteed, and a recovery effect of speed circulation can be further guaranteed, thereby improving the hydraulic performance and the flow stability of a bulb tubular pump device.
Description
本发明涉及一种灯泡贯流泵导叶自适应设计方法及灯泡贯流泵导叶，属于流体机械技术领域。The invention relates to an adaptive design method for guide vanes of bulb tubular pumps and guide vanes of bulb tubular pumps, belonging to the technical field of fluid machinery.
灯泡贯流泵是一种适用于扬程低、流量大场合的经济型泵，具有流道顺直、水力损失小、装置效率高等优点，在我国南水北调等大型调水工程中发挥了重要作用。灯泡贯流泵装置主要由进水流道、叶轮段、导叶段、灯泡体段及出水流道五部分组成。水流由进水流道流入叶轮，通过高速旋转的叶轮获得能量，导叶体将从叶轮流出水流所具有的一部分圆周速度，也就是速度环量进一步转化为压力能，使水流平稳地轴向流经灯泡体与出水流道。The bulb tubular pump is an economical pump suitable for occasions with low head and large flow. It has the advantages of straight flow path, small hydraulic loss, and high installation efficiency. It has played an important role in large-scale water transfer projects such as South-to-North Water Diversion Projects in my country. The bulb tubular pump device is mainly composed of five parts: water inlet channel, impeller section, guide vane section, bulb body section and water outlet channel. The water flow flows into the impeller from the water inlet channel, and the energy is obtained through the high-speed rotating impeller. The guide vane body further converts a part of the peripheral velocity of the water flowing out of the impeller, that is, the velocity ring, into pressure energy, so that the water flows smoothly through the axial direction. The bulb body and the water outlet channel.
目前，贯流泵所采用的导叶体结构一般是由传统轴流泵导叶设计方法设计所得，由于灯泡贯流泵电机尺寸的限制，叶轮与灯泡体之间的导叶体轮毂母线往往与泵轴中心线具有一定的夹角，导致导叶体内的流动不再是传统轴流泵中的轴向流动，而是由径向流动与轴向流动合成的扩散流动，这种由泵装置结构特点所产生的流动差异性导致由传统方法所设计的导叶与灯泡贯流泵结构的匹配性低，其水力性能很难满足大型灯泡贯流泵装置的要求。At present, the guide vane structure used in the tubular flow pump is generally designed by the traditional axial flow pump guide vane design method. Due to the limitation of the size of the bulb tubular pump motor, the guide vane hub busbar between the impeller and the bulb body is often the same as the The center line of the pump shaft has a certain included angle, so that the flow in the guide vane is no longer the axial flow in the traditional axial flow pump, but the diffusion flow composed of radial flow and axial flow. This pump device structure Due to the flow difference caused by the characteristics, the guide vane designed by the traditional method has a low match with the bulb tubular pump structure, and its hydraulic performance is difficult to meet the requirements of a large bulb tubular pump device.
导叶体作为灯泡贯流泵装置关键的水力部件之一，不仅其自身会产生一定的水力损失，还会影响在其之后灯泡体段及出水流道内的流态，进而对整个贯流泵装置的水力性能产生不可忽视的影响。本发明结合灯泡贯流泵装置的结构特点，提出了一种能自适应扩散导叶体结构，减弱甚至消除导叶体内不良流态，提升灯泡贯流泵装置水力性能的灯泡贯流泵自适应导叶设计方法。As one of the key hydraulic components of the bulb tubular pump device, the vane body will not only cause a certain hydraulic loss, but also affect the flow state in the bulb body section and the water outlet channel after it, and further affect the entire tubular pump device. The hydraulic performance has a non-negligible impact. Combining the structural characteristics of the bulb tubular pump device, the present invention proposes a self-adaptive diffusion guide vane body structure, weakens or even eliminates the bad flow state in the guide vane body, and improves the hydraulic performance of the bulb tubular pump device. Guide vane design method.
发明内容Contents of the invention
为了进一步提高导叶体与灯泡贯流泵装置结构的匹配性，减少灯泡贯流泵导叶体内部的水力损失，改善导叶体整流及回收速度环量的效果，优化灯泡贯流泵内部的流态及提升泵装置整体的水力性能，本发明提供了一种适合大型灯泡贯流泵的导叶自适应设计方法及灯泡贯流泵导叶。In order to further improve the matching between the vane body and the bulb tubular pump device structure, reduce the hydraulic loss inside the vane body of the bulb tubular pump, improve the effect of rectification and recovery speed circulation of the guide vane body, and optimize the internal pressure of the bulb tubular pump The fluid state and the overall hydraulic performance of the lifting pump device, the present invention provides a self-adaptive design method for guide vanes suitable for large bulb tubular pumps and guide vanes of bulb tubular pumps.
为实现上述发明目的，本发明采取的技术方案为：一种灯泡贯流泵导叶自 适应设计方法，根据贯流泵装置结构确定导叶的轴面图，将导叶进、出口边沿半径方向等分，确定导叶流面个数；根据导叶基本结构参数按轴流泵导叶设计方法计算得到各流面上的导叶进口角α
3，基于导叶轴面图，保证各流面导叶型线高度H不变，针对不同轮毂扩散角下的导叶体结构，按线性或非线性规律赋予各流面导叶型线从轮毂至轮缘逐渐增大的出口安放角，此时根据式(1)，在导叶型线高度H保持不变的前提下，各流面导叶型线的弦长l根据导叶进、出口安放角有所不同；
In order to achieve the purpose of the above invention, the technical solution adopted by the present invention is: a self-adaptive design method for the guide vane of the bulb tubular pump, which determines the axial view of the guide vane according to the structure of the tubular pump device, and aligns the inlet and outlet edges of the guide vane in the radial direction Equally divided to determine the number of guide vane flow surfaces; calculate the guide vane inlet angle α 3 on each flow surface according to the basic structural parameters of the guide vane according to the axial flow pump guide vane design method, and based on the guide vane axial surface diagram, ensure that each flow surface The height H of the guide vane line is constant, and for the structure of the guide vane body under different hub divergence angles, according to the linear or nonlinear law, the guide vane line on each flow surface is given an outlet placement angle that gradually increases from the hub to the rim. According to formula (1), under the premise that the guide vane profile height H remains unchanged, the chord length l of the guide vane profile line on each flow surface is different according to the placement angle of the guide vane inlet and outlet;
式中：H为导叶型线高度，毫米；l为导叶流面型线弦长，毫米；α
3为导叶叶片进口角，度；α
4为导叶叶片出口角，度。
In the formula: H is the height of the guide vane profile, mm; l is the chord length of the guide vane flow surface profile, mm; α 3 is the inlet angle of the guide vane, degrees; α 4 is the outlet angle of the guide vane, degrees.
上述方案中，根据式(2),基于导叶进口安放角、导叶出口安放角、导叶流面型线高度或导叶流面型线弦长的具体数值计算出各流面型线的半径，绘制出导叶的工作面型线；In the above scheme, according to formula (2), based on the guide vane inlet placement angle, guide vane outlet placement angle, guide vane flow surface profile height or guide vane profile line chord length, the specific values of the guide vane profile line are calculated. Radius, draw the working surface profile line of the guide vane;
式中：R为导叶翼型剖面型线半径，毫米。In the formula: R is the radius of the section line of the guide vane airfoil, mm.
上述方案中，各流面导叶型线的进口角始终保持一致。In the above scheme, the inlet angles of the guide vane profiles of each flow surface are always consistent.
上述方案中，当贯流泵导叶轮毂侧的单边扩散角α＝13°～18°时，轮毂侧流面导叶型线的出口安放角θ
0＝79°～82°；当贯流泵导叶轮毂侧的单边扩散角α＝19°～25°时，轮毂侧流面导叶型线的出口安放角θ
0＝75°～78°。
In the above scheme, when the unilateral divergence angle α on the hub side of the guide vane of the tubular pump is 13°～18°, the outlet setting angle θ 0 of the guide vane profile on the flow surface of the hub side is 79°～82°; When the unilateral divergence angle α on the hub side of the pump guide vane is 19° to 25°, the outlet setting angle θ 0 of the guide vane profile on the flow surface on the hub side is 75° to 78°.
上述方案中，轮毂侧导叶型线出口安放角与轮缘侧导叶型线出口安放角之间的角度差值为10°；轮毂侧导叶型线出口安放角至轮缘侧导叶型线出口安放角之间的角度递增变化规律包括三种，如式(3)、(4)、(5)所示：In the above scheme, the angle difference between the outlet installation angle of the guide vane profile on the hub side and the installation angle of the guide vane profile outlet on the rim side is 10°; There are three types of angle incremental change rules between the line exit placement angles, as shown in formulas (3), (4) and (5):
Δθ
1(r*)＝10·r* (3)
Δθ 1 (r*)=10·r* (3)
Δθ
2(r*)＝-10·(r*)
2+20·r* (4)
Δθ 2 (r*)＝-10·(r*) 2 +20·r* (4)
Δθ
3(r*)＝10·(r*)
2 (5)
Δθ 3 (r*)=10·(r*) 2 (5)
式中：r*表示导叶体轮毂至轮缘位置的无量纲相对半径，其范围为0～1；Δθ(r*)表示以轮毂侧流面导叶型线出口安放角为基准，各流面导叶型线出口安 放角随相对半径变化的增量，其范围为0°～10°；其中Δθ
1(r*)为线性递增变化规律，Δθ
2(r*)和Δθ
3(r*)为非线性递增变化规律。
In the formula: r* represents the dimensionless relative radius from the hub to the rim of the guide vane body, and its range is 0 to 1; The increment of the surface guide vane profile outlet placement angle with the change of the relative radius, ranging from 0° to 10°; where Δθ 1 (r*) is the law of linear incremental change, Δθ 2 (r*) and Δθ 3 (r* ) is a nonlinear increasing change rule.
上述方案中，从轮毂至轮缘各流面导叶型线出口安放角可表示为In the above scheme, the placement angle of the guide vane profile outlet on each flow surface from the hub to the rim can be expressed as
θ(r*)＝θ
0+Δθ
i(r*)(i＝1,2,3) (6)
θ(r*)=θ 0 +Δθ i (r*)(i=1,2,3) (6)
式中：θ(r*)为导叶出口安放角从轮毂至轮缘随相对半径的变化规律；Δθ
i(r*)为三种不同的导叶出口安放角递增规律。
In the formula: θ(r*) is the change law of the guide vane outlet placement angle from the hub to the rim with the relative radius; Δθi (r*) is the increasing law of three different guide vane outlet placement angles.
上述方案中，当导叶体轮毂侧扩散角发生变化时，可通过调整轮毂侧流面导叶型线出口安放角取值与不同的导叶出口角递增规律相匹配，得到适应导叶体扩散流场的导叶出口角值。In the above scheme, when the divergence angle on the hub side of the guide vane body changes, the value of the outlet placement angle of the guide vane profile line on the flow surface on the hub side can be adjusted to match the increasing law of the different guide vane outlet angles, so as to obtain the diffusion angle suitable for the guide vane body The guide vane outlet angle value of the flow field.
上述方案中，按照791翼型加厚规律对所确定的各流面导叶型线进行从工作面至背面的加厚。In the above scheme, according to the 791 airfoil thickening law, the determined profile of each flow surface guide vane is thickened from the working surface to the back.
上述方案中，各流面导叶型线的出口角从轮毂至轮缘按设计的线性或非线性规律递增变化时，始终保持各流面导叶型线高度H保持不变，即：保证了导叶轴面图的不变，只通过导叶进、出口角变化引起的型线弦长及型线半径的变化来调整各流面导叶型线的形状，除此之外，导叶型线的加厚规律也始终保持不变。In the above scheme, when the outlet angles of the guide vane profiles of each flow surface are changed from the hub to the rim according to the designed linear or nonlinear law, the height H of the guide vane profiles of each flow surface remains unchanged, that is, the The guide vane axis diagram remains unchanged, and the shape of the guide vane profiles on each flow surface is only adjusted by the change of the profile chord length and profile radius caused by the change of the guide vane inlet and outlet angles. In addition, the profile of the guide vanes The thickening law of the line also remains the same throughout.
本发明还提供了一种灯泡贯流泵导叶，该贯流泵导叶的叶片数为7片，导叶出口安放角从轮毂侧至轮缘侧按式(7)所示规律逐渐递增，The present invention also provides a guide vane of a bulb tubular pump, the number of vanes of the guide vane of the tubular pump is 7 pieces, and the placement angle of the guide vane outlet gradually increases from the hub side to the wheel rim side according to the law shown in formula (7),
θ(r*)＝θ
0+Δθ
1(r*)＝80°+10·r* (7)。
θ(r*)=θ 0 +Δθ 1 (r*)=80°+10·r* (7).
本发明的有益效果：(1)本发明所述的灯泡贯流泵导叶自适应设计方法解决了传统轴流泵导叶不适应贯流泵导叶体扩散流动的问题。通过参数化不同的导叶出口角变化规律，当导叶体轮毂侧扩散角随灯泡体结构发生变化时，可根据所述方法自适应地设计出适应导叶体扩散流动的导叶，从而可减弱甚至消除导叶出口叶根周围的涡流，降低导叶的水力损失，保证灯泡体段及出水流道内的流动稳定性，且随着导叶出口角沿轮毂至轮缘方向按一定规律的不断增大，可保证导叶回收速度环量的效果。(2)本发明所述导叶自适应设计方法可提高灯泡贯流泵装置的水力性能，增加其流动稳定性。Beneficial effects of the present invention: (1) The self-adaptive design method for guide vanes of bulb tubular pumps in the present invention solves the problem that guide vanes of traditional axial flow pumps do not adapt to the diffusion flow of guide vanes of tubular pumps. By parameterizing the variation rules of different guide vane outlet angles, when the divergence angle on the hub side of the guide vane body changes with the structure of the bulb body, the guide vane that adapts to the diffuse flow of the guide vane body can be adaptively designed according to the method, so that Weaken or even eliminate the vortex around the root of the guide vane outlet, reduce the hydraulic loss of the guide vane, ensure the flow stability in the bulb body section and the water outlet channel, and follow the guide vane outlet angle along the direction from the hub to the rim according to a certain law. Increase, can ensure the effect of guide vane recovery speed circulation. (2) The guide vane self-adaptive design method of the present invention can improve the hydraulic performance of the bulb tubular pump device and increase its flow stability.
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所 需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.
图1是大型灯泡贯流泵装置单线示意图。Figure 1 is a single-line schematic diagram of a large bulb tubular pump device.
图2是本发明所述导叶设计方法实施例的导叶轴面图。Fig. 2 is an axial view of the guide vane of the embodiment of the guide vane design method of the present invention.
图3是贯流泵导叶翼型参数示意图。Fig. 3 is a schematic diagram of the airfoil parameters of the guide vane of the tubular pump.
图4是本发明所述导叶设计方法的导叶出口角变化规律示意图。Fig. 4 is a schematic diagram of the change law of the outlet angle of the guide vane according to the guide vane design method of the present invention.
图5是本发明所述导叶设计方法的实施例与传统导叶设计方法所设计导叶的翼型对比图。Fig. 5 is a comparison diagram of the airfoil of the guide vane designed by the embodiment of the guide vane design method of the present invention and the traditional guide vane design method.
图6为本发明所述导叶设计方法的实施例的装配结构示意图。Fig. 6 is a schematic diagram of an assembly structure of an embodiment of the guide vane design method of the present invention.
图7为本发明所述导叶设计方法的实施例与传统导叶设计方法所设计导叶在相对半径0.1处的流场对比图。Fig. 7 is a comparison diagram of the flow field at the relative radius 0.1 of the guide vane designed by the embodiment of the guide vane design method of the present invention and the traditional guide vane design method.
图中：1.进水流道；2.叶轮；3.导叶；4.灯泡体；5.出水流道；6.导叶外壳体；7.导叶叶片轴面；8.圆锥型导叶轮毂。In the figure: 1. Inlet channel; 2. Impeller; 3. Guide vane; 4. Bulb body; hub.
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
实施例：以一个大型灯泡贯流模型泵装置为例，如示意图1所示，模型泵主要包括进水流道1，叶轮2，导叶3，灯泡体4和出水流道5，该模型泵装置叶轮外径为300mm，转速为1450r/min，额定工况流量为410.9L/s，额定工况下扬程为4.11m。根据贯流泵装置整体结构确定了导叶的轴面图，并进行了流面划分，如图2所示，共有5个流面。图3为导叶翼型剖面主要参数的示意图，基于初始设计参数，利用导叶传统设计方法计算了不同流面上导叶型线的进口安放角。根据贯流泵装置结构确定导叶轮毂侧单边扩散角为14°，此时选取导叶轮毂侧流面导叶型线的出口安放角θ
0＝80°，所设计的三种导叶出口角递增变化规律如式(1)-(3)所示，其相应示意图如图4所示
Embodiment: Taking a large-scale bulb through-flow model pump device as an example, as shown in schematic diagram 1, the model pump mainly includes a water inlet channel 1, an impeller 2, a guide vane 3, a bulb body 4 and an outlet channel 5. The model pump device The outer diameter of the impeller is 300mm, the rotational speed is 1450r/min, the flow rate under the rated working condition is 410.9L/s, and the lift under the rated working condition is 4.11m. According to the overall structure of the tubular pump device, the axial plane diagram of the guide vane is determined, and the flow surface is divided. As shown in Figure 2, there are 5 flow surfaces in total. Figure 3 is a schematic diagram of the main parameters of the guide vane airfoil profile. Based on the initial design parameters, the inlet placement angles of the guide vane profiles on different flow surfaces are calculated using the traditional guide vane design method. According to the structure of the tubular pump device, the unilateral divergence angle of the guide vane hub side is determined to be 14°. At this time, the outlet placement angle θ 0 =80° of the guide vane profile line on the flow surface of the guide vane hub side is selected. The three kinds of guide vane outlets designed The law of incremental change of angle is shown in formulas (1)-(3), and the corresponding schematic diagram is shown in Figure 4
Δθ
1(r*)＝10·r* (1)
Δθ 1 (r*)=10·r* (1)
Δθ
2(r*)＝-10·(r*)
2+20·r* (2)
Δθ 2 (r*)＝-10·(r*) 2 +20·r* (2)
Δθ
3(r*)＝10·(r*)
2 (3)
Δθ 3 (r*)＝10·(r*) 2 (3)
式中：r*表示导叶体轮毂至轮缘位置的无量纲相对半径，其范围为0～1；Δθ(r*)表示以轮毂侧流面导叶型线出口安放角为基准，各流面导叶型线出口安放角随相对半径变化的增量，其范围为0°～10°。其中Δθ
1(r*)为线性递增变化规律，Δθ
2(r*)和Δθ
3(r*)为非线性递增变化规律。
In the formula: r* represents the dimensionless relative radius from the hub to the rim of the guide vane body, and its range is 0 to 1; The increment of the surface guide vane outlet placement angle with the change of the relative radius, and its range is 0°～10°. Among them, Δθ 1 (r*) is the law of linear incremental change, and Δθ 2 (r*) and Δθ 3 (r*) are the law of nonlinear incremental change.
经过优选对比分析，选择Δθ
1(r*)导叶出口角递增规律进行导叶设计，此时，导叶出口角从轮毂至轮缘的变化规律可表示为
After optimal comparative analysis, the guide vane design is carried out by selecting the increasing law of the guide vane outlet angle of Δθ 1 (r*). At this time, the change rule of the guide vane outlet angle from the hub to the rim can be expressed as
θ(r*)＝θ
0+Δθ
1(r*)＝80°+10·r* (4)
θ(r*)=θ 0 +Δθ 1 (r*)=80°+10·r* (4)
基于流面划分方案，根据无量纲相对半径值即可在式(4)基础上计算得到相应流面上导叶型线的出口安放角。Based on the flow surface division scheme, the outlet placement angle of the guide vane profile on the corresponding flow surface can be calculated on the basis of formula (4) according to the dimensionless relative radius value.
根据已计算得到的各流面导叶型线的进口安放角、所确定的出口安放角及由导叶轴面图所确定的导叶型线轴向高度，可通过式(5)计算得到各流面上导叶型线的弦长。According to the calculated inlet placement angles of the guide vane profiles of each flow surface, the determined outlet placement angles and the axial height of the guide vane profiles determined from the guide vane axial plane diagram, the various The chord length of the guide vane profile on the flow surface.
式中：H为导叶高度，毫米；l为导叶流面型线弦长，毫米；α
3为导叶叶片进口角，度；α
4为导叶叶片出口角，度。
In the formula: H is the height of the guide vane, mm; l is the chord length of the flow surface of the guide vane, mm; α 3 is the inlet angle of the guide vane, degrees; α 4 is the outlet angle of the guide vane, degrees.
接着，根据各流面导叶型线的进、出口安放角和型线高度或弦长，由式(6)计算出各流面导叶型线的半径，进而绘制出各流面导叶的工作面型线。Then, according to the inlet and outlet placement angles of the guide vanes on each flow surface and the height or chord length of each flow surface guide vane, the radius of each flow surface guide vane profile is calculated by formula (6), and then the radii of each flow surface guide vane are drawn. Work surface profile.
式中：R为导叶翼型剖面型线半径，毫米。In the formula: R is the radius of the section line of the guide vane airfoil, mm.
接着，根据791翼型加厚规律对各流面导叶工作面型线进行由工作面向背面的加厚，加厚完成后，对各流面导叶翼型的进口及出口进行修圆。图5展示了由传统设计方法得到的导叶翼型剖面及本实例设计的出口角符合Δθ
1(r*)规律的导叶翼型剖面，导叶的流面均为5个，两种设计方法均采用图2所示的导叶轴面形状。
Then, according to the 791 airfoil thickening rule, the working surface profile of each flow surface guide vane is thickened from the working surface to the back. After the thickening is completed, the inlet and outlet of each flow surface guide vane airfoil are rounded. Figure 5 shows the profile of the guide vane airfoil obtained by the traditional design method and the profile of the guide vane airfoil designed in this example with the outlet angle conforming to the law of Δθ 1 (r*). The method adopts the axial surface shape of the guide vane shown in Fig. 2 .
需要注意的是，各流面导叶型线的出口安放角从轮毂至轮缘按线性或非线 性规律递增时，始终保持各流面导叶型线的轴向高度H保持不变，即保证了导叶轴面图的不变，只通过导叶进、出口角变化引起的型线弦长及型线半径的变化来调整各流面导叶型线的形状，除此之外，导叶型线的加厚规律也始终保持不变。It should be noted that when the outlet placement angles of the guide vane profiles of each flow surface increase linearly or nonlinearly from the hub to the rim, the axial height H of the guide vane profiles of each flow surface remains unchanged, that is, to ensure The shape of guide vane profiles on each flow surface is adjusted only by the change of profile chord length and profile radius caused by the change of guide vane inlet and outlet angles. In addition, guide vane The thickening law of the molding line also remains unchanged.
图6为本发明所述贯流泵导叶自适应设计方法实施例的导叶体装配结构示意图，其主要包括，导叶外壳体6，导叶叶片轴面7，圆锥型导叶轮毂8，导叶叶片连接轮毂及外壳体，致导叶段是一个整体。导叶段进口通过螺栓与叶轮室连接，导叶段出口通过螺栓与灯泡体段连接。Fig. 6 is a schematic diagram of the guide vane body assembly structure of the embodiment of the self-adaptive design method for the guide vane of the tubular pump according to the present invention, which mainly includes the guide vane outer shell 6, the guide vane blade axial surface 7, the conical guide vane hub 8, The guide vane blades are connected to the hub and the outer casing, so that the guide vane section is a whole. The inlet of the guide vane section is connected with the impeller chamber through bolts, and the outlet of the guide vane section is connected with the bulb body section through bolts.
图7为图5所示的两种不同的贯流泵导叶内靠近轮毂侧相对半径0.1处的流场对比，由本发明所述贯流泵导叶设计方法所设计导叶的轮毂侧流场流态更好，降低了导叶叶根周围的脱流及涡流程度，减小了导叶段自身的水力损失。Figure 7 is a comparison of the flow fields at the relative radius of 0.1 near the hub side in the guide vanes of the two different tubular pumps shown in Figure 5, and the flow field on the hub side of the guide vane designed by the guide vane design method of the tubular pump according to the present invention The flow state is better, the degree of shedding and vortex around the guide vane root is reduced, and the hydraulic loss of the guide vane section itself is reduced.
以上为本发明技术方案的具体说明，但是本发明专利并不局限于上述实施例，所有由本领域技术人员在本发明技术方案的基础上所作出的任何显而易见的改进替换或变型，均属于本发明的保护范围。The above is a specific description of the technical solution of the present invention, but the patent of the present invention is not limited to the above-mentioned embodiments, and any obvious improvement, replacement or modification made by those skilled in the art on the basis of the technical solution of the present invention belongs to the present invention scope of protection.
Claims (10)
- 一种灯泡贯流泵导叶自适应设计方法，其特征在于，根据贯流泵装置结构确定导叶的轴面图，将导叶进、出口边沿半径方向等分，确定导叶流面个数；根据导叶基本结构参数按轴流泵导叶设计方法计算得到各流面上的导叶进口角α 3，基于导叶轴面图，保证各流面导叶型线高度H不变，针对不同轮毂扩散角下的导叶体结构，按线性或非线性规律赋予各流面导叶型线从轮毂至轮缘逐渐增大的出口安放角，此时根据式(1)，在导叶型线高度H保持不变的前提下，各流面导叶型线的弦长l根据导叶进、出口安放角有所不同； A self-adaptive design method for the guide vane of a bulb tubular pump, characterized in that, according to the structure of the tubular pump device, the axial plane diagram of the guide vane is determined, the inlet and outlet edges of the guide vane are equally divided along the radial direction, and the number of flow surfaces of the guide vane is determined ; According to the basic structural parameters of the guide vane, the guide vane inlet angle α 3 on each flow surface is calculated according to the axial flow pump guide vane design method. For guide vane body structures with different hub divergence angles, the guide vane profiles on each flow surface are given an outlet placement angle that gradually increases from the hub to the rim according to linear or nonlinear rules. At this time, according to formula (1), the guide vane profile Under the premise that the line height H remains unchanged, the chord length l of the guide vane profile line on each flow surface is different according to the placement angle of the guide vane inlet and outlet;
式中：H为导叶型线高度，毫米；l为导叶流面型线弦长，毫米；α 3为导叶叶片进口角，度；α 4为导叶叶片出口角，度。 In the formula: H is the height of the guide vane profile, mm; l is the chord length of the guide vane flow surface profile, mm; α 3 is the inlet angle of the guide vane, degrees; α 4 is the outlet angle of the guide vane, degrees. - 根据权利要求1所述的一种灯泡贯流泵导叶自适应设计方法，其特征在于，根据式(2),基于导叶进口安放角、导叶出口安放角、导叶流面型线高度或导叶流面型线弦长的具体数值计算出各流面型线的半径，绘制出导叶的工作面型线；The self-adaptive design method for guide vanes of bulb tubular pumps according to claim 1, characterized in that, according to formula (2), based on guide vane inlet placement angle, guide vane outlet placement angle, guide vane flow surface profile height Or the specific value of the chord length of the flow surface profile of the guide vane to calculate the radius of each flow surface profile and draw the working surface profile of the guide vane;
式中：R为导叶翼型剖面型线半径，毫米。In the formula: R is the radius of the section line of the guide vane airfoil, mm. - 根据权利要求1或2所述的一种灯泡贯流泵导叶自适应设计方法，其特征在于，各流面导叶型线的进口角始终保持一致。The self-adaptive design method for the guide vane of the bulb tubular pump according to claim 1 or 2, characterized in that the inlet angles of the guide vane profiles on each flow surface are always consistent.
- 根据权利要求1或2所述的一种灯泡贯流泵导叶自适应设计方法，其特征在于，当贯流泵导叶轮毂侧的单边扩散角α＝13°～18°时，轮毂侧流面导叶型线的出口安放角θ 0＝79°～82°；当贯流泵导叶轮毂侧的单边扩散角α＝19°～25°时，轮毂侧流面导叶型线的出口安放角θ 0＝75°～78°。 According to claim 1 or 2, a self-adaptive design method for guide vanes of bulb tubular pumps, characterized in that, when the unilateral divergence angle α on the hub side of the guide vanes of the tubular pump = 13° to 18°, the hub side The outlet placement angle θ 0 of the guide vane profile on the flow surface = 79° to 82°; when the unilateral divergence angle α on the hub side of the guide vane of the tubular pump = 19° to 25°, the profile of the guide vane on the hub side The outlet placement angle θ 0 =75°～78°.
- 根据权利要求1或2所述的一种灯泡贯流泵导叶自适应设计方法，其特征在于，轮毂侧导叶型线出口安放角与轮缘侧导叶型线出口安放角之间的角度差值为10°；轮毂侧导叶型线出口安放角至轮缘侧导叶型线出口安放角之间的角度递增变化规律包括三种，如式(3)、(4)、(5)所示：According to claim 1 or 2, a self-adaptive design method for the guide vane of the bulb tubular pump, characterized in that the angle between the outlet setting angle of the guide vane profile line on the hub side and the setting angle between the guide vane profile line outlet setting angle on the rim side The difference is 10°; there are three incremental changes in the angle between the hub side guide vane profile outlet placement angle and the wheel rim side guide vane profile exit placement angle, such as formula (3), (4), (5) Shown:Δθ 1(r*)＝10·r* (3) Δθ 1 (r*)=10·r* (3)Δθ 2(r*)＝-10·(r*) 2+20·r* (4) Δθ 2 (r*)＝-10·(r*) 2 +20·r* (4)Δθ 3(r*)＝10·(r*) 2 (5) Δθ 3 (r*)=10·(r*) 2 (5)式中：r*表示导叶体轮毂至轮缘位置的无量纲相对半径，其范围为0～1；Δθ(r*)表示以轮毂侧流面导叶型线出口安放角为基准，各流面导叶型线出口安放角随相对半径变化的增量，其范围为0°～10°；其中Δθ 1(r*)为线性递增变化规律，Δθ 2(r*)和Δθ 3(r*)为非线性递增变化规律。 In the formula: r* represents the dimensionless relative radius from the hub to the rim of the guide vane body, and its range is 0 to 1; The increment of the surface guide vane profile outlet placement angle with the change of the relative radius, ranging from 0° to 10°; where Δθ 1 (r*) is the law of linear incremental change, Δθ 2 (r*) and Δθ 3 (r* ) is a nonlinear increasing change rule.
- 根据权利要求5所述的一种灯泡贯流泵导叶自适应设计方法，其特征在于，从轮毂至轮缘各流面导叶型线出口安放角可表示为According to claim 5, a self-adaptive design method for guide vanes of bulb tubular pumps, characterized in that, the placement angles of guide vane profile outlets on each flow surface from the hub to the rim can be expressed asθ(r*)＝θ 0+Δθ i(r*)(i＝1,2,3) (6) θ(r*)=θ 0 +Δθ i (r*)(i=1,2,3) (6)式中：θ(r*)为导叶出口安放角从轮毂至轮缘随相对半径的变化规律；Δθ i(r*)为三种不同的导叶出口安放角递增规律。 In the formula: θ(r*) is the change law of the guide vane outlet placement angle from the hub to the rim with the relative radius; Δθi (r*) is the increasing law of three different guide vane outlet placement angles.
- 根据权利要求4所述的一种灯泡贯流泵导叶自适应设计方法，其特征在于，当导叶体轮毂侧扩散角发生变化时，可通过调整轮毂侧流面导叶型线出口安放角取值与不同的导叶出口角递增规律相匹配，得到适应导叶体扩散流场的导叶出口角值。According to claim 4, a self-adaptive design method for the guide vane of a bulb tubular pump, wherein when the divergence angle on the hub side of the guide vane body changes, the placement angle of the guide vane profile outlet on the hub side flow surface can be adjusted. The value is matched with different guide vane outlet angle increment rules, and the guide vane outlet angle value suitable for the diffuse flow field of the guide vane body is obtained.
- 根据权利要求2所述的一种灯泡贯流泵导叶自适应设计方法，其特征在于，按照791翼型加厚规律对所确定的各流面导叶型线进行从工作面至背面的加厚。A method for self-adaptive design of guide vanes of bulb tubular flow pumps according to claim 2, characterized in that, according to the 791 airfoil thickening rule, the determined profiles of guide vanes on each flow surface are thickened from the working surface to the back thick.
- 根据权利要求6或8所述的一种灯泡贯流泵导叶自适应设计方法，其特征在于，各流面导叶型线的出口角从轮毂至轮缘按设计的线性或非线性规律递增变化时，始终保持各流面导叶型线高度H保持不变，即：保证了导叶轴面图的不变，只通过导叶进、出口角变化引起的型线弦长及型线半径的变化来调整各流面导叶型线的形状，除此之外，导叶型线的加厚规律也始终保持不变。According to claim 6 or 8, a self-adaptive design method for guide vanes of bulb tubular flow pumps, characterized in that the outlet angles of the guide vane profiles on each flow surface increase from the hub to the rim according to the designed linear or nonlinear law When changing, the profile height H of the guide vane on each flow surface remains unchanged, that is, the axial plane diagram of the guide vane is guaranteed to be unchanged, and only the profile chord length and profile radius caused by the change of the guide vane inlet and outlet angles In addition, the thickening rule of the guide vane line also remains unchanged.
- 一种利用灯泡贯流泵导叶自适应设计方法所设计的导叶，其特征在于，贯流泵导叶的叶片数为7片，导叶出口安放角从轮毂侧至轮缘侧按式(7)所示规律逐渐递增，A guide vane designed by using the self-adaptive design method of the guide vane of the bulb tubular pump, characterized in that the number of vanes of the guide vane of the tubular pump is 7 pieces, and the placement angle of the guide vane outlet is from the hub side to the wheel rim side according to the formula ( 7) The law shown gradually increases,θ(r*)＝θ 0+Δθ 1(r*)＝80°+10·r* (7)。 θ(r*)=θ 0 +Δθ 1 (r*)=80°+10·r* (7).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111323302.9A CN114396393A (en) | 2021-11-08 | 2021-11-08 | Bulb tubular pump guide vane self-adaptive design method and bulb tubular pump guide vane |
| CN202111323302.9 | 2021-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023077648A1 true WO2023077648A1 (en) | 2023-05-11 |
Family
ID=81225606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2021/142272 WO2023077648A1 (en) | 2021-11-08 | 2021-12-29 | Self-adaptive design method for bulb tubular pump guide vane, and bulb tubular pump guide vane |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114396393A (en) |
| WO (1) | WO2023077648A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117249032A (en) * | 2023-11-17 | 2023-12-19 | 哈尔滨大电机研究所有限公司 | Mixed-flow pump water turbine waveform movable guide vane |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115523191A (en) * | 2022-05-31 | 2022-12-27 | 扬州大学 | Design method of guide vane body of tubular pump device for regulating and controlling outlet bias flow |
| CN115076123B (en) * | 2022-06-23 | 2024-04-09 | 江苏大学 | Eco-friendly tubular pump |
| CN117404325B (en) * | 2023-12-13 | 2024-03-01 | 湖南凯利特泵业有限公司 | Centrifugal pump equipment and mechanical seal protection shell |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009185731A (en) * | 2008-02-07 | 2009-08-20 | Toshiba Corp | Bulb turbine |
| CN103603763A (en) * | 2013-11-01 | 2014-02-26 | 河海大学 | Bulb tubular turbine for micro-head power generation of water plant |
| CN103644140A (en) * | 2013-12-05 | 2014-03-19 | 江苏大学 | Method for designing submersible axial-flow pump guide vane and submersible axial-flow pump guide vane |
| CN107299900A (en) * | 2016-12-08 | 2017-10-27 | 江苏国泉泵业制造有限公司 | A kind of Hydraulic Design Method of axial-flow type heavy metal pump |
| CN108223386A (en) * | 2017-11-30 | 2018-06-29 | 河海大学 | A kind of large-scale bulb through-flow pump installation |
| CN110399663A (en) * | 2019-07-12 | 2019-11-01 | 湖南长长电泵科技有限公司 | Submersible pump guide vanes design method, immersible pump and design device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881284A (en) * | 2009-12-21 | 2010-11-10 | 江苏大学 | Axial flow pump guide vane body with high specific speed |
| CN103912518B (en) * | 2013-09-16 | 2018-03-06 | 江苏大学 | A kind of axial curved surface structure technique of well pump stator |
| CN203604216U (en) * | 2013-10-28 | 2014-05-21 | 扬州大学 | Bulb type diving tubular pump device |
| CN106971019B (en) * | 2017-02-22 | 2020-08-28 | 江苏大学 | Hydraulic design method for guide vane of high-specific-speed axial flow pump |
| CN108223425B (en) * | 2017-11-30 | 2020-04-10 | 河海大学 | High-lift bulb tubular pump |
| CN110110349B (en) * | 2019-03-11 | 2023-03-24 | 江苏大学 | Multi-working-condition optimization design method for space guide vane of rotary vane type mixed flow pump |
-
2021
- 2021-11-08 CN CN202111323302.9A patent/CN114396393A/en active Pending
- 2021-12-29 WO PCT/CN2021/142272 patent/WO2023077648A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009185731A (en) * | 2008-02-07 | 2009-08-20 | Toshiba Corp | Bulb turbine |
| CN103603763A (en) * | 2013-11-01 | 2014-02-26 | 河海大学 | Bulb tubular turbine for micro-head power generation of water plant |
| CN103644140A (en) * | 2013-12-05 | 2014-03-19 | 江苏大学 | Method for designing submersible axial-flow pump guide vane and submersible axial-flow pump guide vane |
| CN107299900A (en) * | 2016-12-08 | 2017-10-27 | 江苏国泉泵业制造有限公司 | A kind of Hydraulic Design Method of axial-flow type heavy metal pump |
| CN108223386A (en) * | 2017-11-30 | 2018-06-29 | 河海大学 | A kind of large-scale bulb through-flow pump installation |
| CN110399663A (en) * | 2019-07-12 | 2019-11-01 | 湖南长长电泵科技有限公司 | Submersible pump guide vanes design method, immersible pump and design device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117249032A (en) * | 2023-11-17 | 2023-12-19 | 哈尔滨大电机研究所有限公司 | Mixed-flow pump water turbine waveform movable guide vane |
| CN117249032B (en) * | 2023-11-17 | 2024-03-15 | 哈尔滨大电机研究所有限公司 | Mixed-flow pump water turbine waveform movable guide vane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114396393A (en) | 2022-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2023077648A1 (en) | Self-adaptive design method for bulb tubular pump guide vane, and bulb tubular pump guide vane | |
| CN108223386B (en) | Large bulb tubular pump device | |
| CN103696983B (en) | A kind of Double-way axial flow impeller of pump Optimization Design | |
| KR20120033314A (en) | Direct-connection low-speed small mixed-flow hydroturbine for hydrodynamic energy-saving cooling tower | |
| CN207708246U (en) | Microminiature micro-centrifugal blood pump with self-regulation blade | |
| CN101881284A (en) | Axial flow pump guide vane body with high specific speed | |
| CN104533828B (en) | A kind of reversible axial flow pump Hydraulic Design Method | |
| CN108223424B (en) | Vertical axial-flow pump section | |
| CN212225601U (en) | High-efficiency energy-saving centrifugal pump | |
| CN105822589A (en) | Centrifugal pump impeller with high working efficiency | |
| CN111535974A (en) | Low-water-head large-flow mixed-flow water turbine with double-inlet volute | |
| CN112648230A (en) | High-efficient anti cavitation centrifugal pump impeller | |
| CN110529426B (en) | Open impeller structure for high-speed pump | |
| CN106870462A (en) | A kind of method for designing of the elbow inlet passage of pumping plant | |
| CN104165156B (en) | A kind of axial-flow pump impeller method for designing not waiting outlet circulation distribution | |
| CN206972617U (en) | A kind of guide vane of water pump cell structure | |
| CN102926912B (en) | A kind of lift vertical shaft water turbine | |
| CN105090048A (en) | Micro-waterhead flow-velocity type water wheel pump | |
| CN115585140A (en) | Shaftless high-cavitation-resistance low-amplitude vibration reversible axial flow fluid machine | |
| CN205744585U (en) | The centrifugal pump impeller that a kind of work efficiency is high | |
| CN201636087U (en) | High-specific speed axial-flow pump guide vane | |
| CN109681462B (en) | Reversible axial-flow pump impeller adopting elliptical-tip combined wing type | |
| CN110410259B (en) | Blade head overhanging type rotating wheel | |
| CN210769506U (en) | Open impeller structure for high-speed pump | |
| CN109764000B (en) | Mixed flow pump runner chamber with spiral pumping groove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21963154 Country of ref document: EP Kind code of ref document: A1 |