WO2020037644A1 - 半开式导流增压叶轮 - Google Patents

半开式导流增压叶轮 Download PDF

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Publication number
WO2020037644A1
WO2020037644A1 PCT/CN2018/102183 CN2018102183W WO2020037644A1 WO 2020037644 A1 WO2020037644 A1 WO 2020037644A1 CN 2018102183 W CN2018102183 W CN 2018102183W WO 2020037644 A1 WO2020037644 A1 WO 2020037644A1
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Prior art keywords
centrifugal
plate
blade
water
semi
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PCT/CN2018/102183
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English (en)
French (fr)
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罗金
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苏州赫尔拜斯泵业有限公司
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Priority to PCT/CN2018/102183 priority Critical patent/WO2020037644A1/zh
Priority to DE212018000024.7U priority patent/DE212018000024U1/de
Publication of WO2020037644A1 publication Critical patent/WO2020037644A1/zh

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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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2277—Rotors specially for centrifugal pumps with special measures for increasing NPSH or dealing with liquids near boiling-point
    • 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
    • F04D1/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D1/025—Comprising axial and radial stages
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/512—Hydrophobic, i.e. being or having non-wettable properties

Definitions

  • the utility model belongs to the technical field of water pumps, and particularly relates to an impeller of a water pump.
  • the impeller pump drives the liquid to rotate at high speed through the working impeller, and transfers the mechanical energy to the liquid, so as to achieve the purpose of conveying the liquid.
  • the impeller pump includes vortex and centrifugal type. Among them, the centrifugal pump uses the impeller to rotate to make the water centrifugal. To work, before starting the centrifugal pump, the pump casing and the suction pipe must be filled with water, and then the motor is started to cause the pump shaft to drive the impeller and water to perform high-speed rotating motion. The water undergoes centrifugal motion and is thrown to the outer edge of the impeller.
  • the flow channel of the shell flows into the pressure water pipeline of the water pump, and the water filling process in the pump casing of the centrifugal pump needs to be completed by other methods; and the transmission efficiency and output pressure of the vortex water pump are not as good as those of the centrifugal pump.
  • the technical problem that the utility model mainly solves is to provide a semi-opening diversion booster impeller, which introduces liquid into a pump casing through a drainage blade, and then outputs the liquid through a centrifugal blade, thereby realizing the operation of drainage and liquid transportation, which is effective Improve the transmission pressure and transmission effect of the pump.
  • a semi-opening diversion booster impeller includes a shaft sleeve for mounting the impeller to a water pump wheel shaft.
  • a side wall of the shaft sleeve is provided with a flow guide portion and a centrifugal portion, and the flow guide portion includes a plurality of inclined portions.
  • the centrifugal portion includes a plurality of centrifugal blades connected to the shaft sleeve, and the centrifugal portion includes a plurality of centrifugal blades connected to the shaft sleeve.
  • each of the centrifugal blades are provided with booster blades
  • the shaft sleeve is provided with a bottom plate at one end of the centrifugal portion
  • the centrifugal blades and the booster blades are both disposed perpendicular to the bottom plate
  • the booster blades An obtuse angle is formed with the drainage surface of the centrifugal blade, and the diversion portion, the centrifugal portion, and the bottom plate are stacked and arranged in the axial direction of the shaft sleeve, and between the diversion portion and the centrifugal portion
  • a water-repellent plate is also provided.
  • the water-repellent plate is a circular water-repellent plate.
  • the flow guiding portion and the centrifugal portion communicate with each other through a communication hole of the water-repellent plate.
  • a water retaining ring is provided on an outer periphery of the hydrophobic plate, the water retaining ring extends from an edge of the hydrophobic plate, and the water retaining ring is perpendicular to a plate surface of the hydrophobic plate, and The extending direction is toward the side where the flow guiding portion is located.
  • the hydrophobic plate is provided with a plurality of penetrating hydrophobic holes, the hydrophobic holes are evenly distributed along the axis circumference of the hydrophobic plate, the hydrophobic holes are strip-shaped holes, and two ends of the waist-shaped hole It is a circular arc structure, and the radii of the arcs at the two ends are different, wherein the end with the larger radius is located outside the hydrophobic plate, and the end with the smaller radius faces the center of the circle of the hydrophobic plate.
  • the number of the hydrophobic holes is twice the number of the centrifugal blades.
  • the number of the guide vanes and the centrifugal vanes is equal.
  • the number of the guide vanes is ten.
  • the guide vane has a turbulence edge, and the turbulence edge is an arc shape located on a side of the guide vane close to the water-repellent plate and warped along an inclined direction of the guide vane. structure.
  • centrifugal blade and the booster blade are both arc-shaped structures, and the radius of the arc is 3cm-6cm.
  • an exit angle formed by the drainage surface of each of the booster blades and a tangent to the bottom plate is 90 °.
  • the impeller of the present utility model has inclined drainage blades and centrifugal blades that are perpendicular to the bottom plate.
  • the deflector is used to introduce liquid. Because the inclined blades can form a certain suction force, It has good drainage ability, and then the liquid flows to the centrifugal part through the communication hole, the centrifugal blade rotates at high speed, and finally the liquid is ejected from the outlet of the booster blade through the action of centrifugal force, and the thrown water passes through the water pump
  • the end of the centrifugal blade is also provided with a booster blade.
  • the booster blade forms an obtuse angle with the centrifugal blade.
  • the liquid will first flow to the booster blade under the action of centrifugation. Under constant high-speed rotation, the liquid continues to be ejected after passing through the booster blade, that is, a certain pressure is formed before the liquid is ejected, so that the liquid ejected by the centrifugal has a higher pressure, thereby increasing the water outlet pressure of the pump.
  • the impeller of the utility model forms a centrifugal cavity for the function of centrifugal blades through a drainage plate and a bottom plate, wherein the drainage plate has a communication hole, so that the diversion portion and the centrifugal portion are communicated, so that drainage and centrifugation can be well connected.
  • the drain plate also has a water retaining ring and a drainage hole. The water retaining ring can prevent the water guided by the deflector from flowing out of the side wall, causing a guide loss.
  • the drain hole has the function of assisting the communication hole to communicate with the water guide, The water to the water retaining ring is led out, and it can also effectively reduce the weight of the impeller;
  • one end of the guide vane has a turbulence edge.
  • the impeller tells that the liquid flows on the surface of the guide vane when rotating, and is guided by the turbulence edge when it reaches the edge, which can effectively prevent the liquid from flowing on the guide vane. Impacts are formed everywhere, causing chaotic water flow and reducing the transmission efficiency of the pump.
  • Figure 1 is a schematic diagram of the overall structure of the impeller of the present invention.
  • FIG. 2 is a partial sectional view of an impeller of the present invention
  • FIG. 3 is a cross-sectional view taken along A-A in FIG. 1;
  • FIG. 4 is a sectional view taken along the line B-B in FIG. 1;
  • FIG. 5 is a C-view of FIG. 4;
  • a semi-opening type guide pressure boosting impeller as shown in FIG. 1, includes a shaft sleeve 1 for mounting the impeller to a water pump wheel shaft, and a side wall of the shaft sleeve is provided with a guide portion 2 and Centrifugal section 3;
  • the deflector includes a plurality of deflector blades 21 arranged obliquely and connected to the shaft sleeve, and the centrifugal section includes a plurality of centrifugal blades 31 connected to the shaft sleeve.
  • the guide vanes and centrifugal blades are uniformly distributed according to the circumference of the shaft sleeve, and the ends of each of the centrifugal blades are provided with booster blades 4, and the shaft sleeve is provided with a bottom plate 5 at one end of the centrifugal section. Both the centrifugal blade and the booster blade are disposed perpendicular to the bottom plate;
  • An obtuse angle ⁇ is formed between the pressurizing blade and the drainage surface 311 of the centrifugal blade, and the flow guiding portion, the centrifugal portion, and the bottom plate are stacked and arranged in the axial direction of the shaft sleeve, and the flow guiding portion
  • a drainage plate 6 is further provided between the centrifugal portion and the centrifugal portion.
  • the drainage plate is a circular annular drainage plate.
  • the deflector and the centrifugal portion communicate with each other through a communication hole 61 of the drainage plate.
  • the guide portion introduces liquid, and the inclined blades have better guiding ability, and then the liquid flows through the communication hole to the centrifugal portion, and finally flows out of the water outlet 8 at the pressure-increasing blade.
  • a water-retaining ring 7 is provided on the outer periphery of the water-repellent plate.
  • the water-retaining ring extends from the edge of the water-repellent plate.
  • the water-retaining ring is perpendicular to the plate surface of the water-repellent plate. The direction is toward the side where the flow guiding portion is located.
  • the water-repellent plate is provided with a plurality of through-water-repellent holes 62, which are uniformly distributed along the circumference of the axis of the water-repellent plate.
  • the water-repellent holes are strip-shaped holes, and both ends of the waist-shaped holes are arcs. Structure, and the radii of the arcs at the two ends are different, in which the end with the larger radius is located outside the hydrophobic plate, and the end with the smaller radius faces the center of the circle of the hydrophobic plate.
  • the number of the hydrophobic holes is twice the number of the centrifugal blades.
  • the number of the guide vanes and the centrifugal vanes is equal.
  • the number of the guide vanes is ten.
  • the number of guide vanes shown is ten
  • the number of centrifugal leaves shown is twelve
  • the number of hydrophobic holes shown is twenty-four.
  • the guide vane has a turbulence edge 211, and the turbulence edge is an arc structure located on a side of the guide vane close to the water-repellent plate and warped along an inclined direction of the guide vane.
  • the centrifugal blade and the booster blade are both arc-shaped structures, and the radius of the arc is 3cm-6cm;
  • the radius of the arc of the centrifugal blade is 5 cm, and the radius of the arc of the booster blade is 3 cm.
  • the gap is 1 mm.
  • An exit angle ⁇ formed by the drainage surface of each of the booster blades and a tangent to the bottom plate is 90 °.
  • the impeller has inclined drainage blades and centrifugal blades that are perpendicular to the bottom plate.
  • the guide portion When the water pump is operating, the guide portion is used to introduce liquid. Because the inclined blades can form a certain suction force, it has better drainage capacity. Then, the liquid flows to the centrifugal part through the communication hole, the centrifugal blade rotates at a high speed, and finally the liquid is thrown out from the water outlet of the booster blade through the effect of centrifugal force.
  • the end of the blade is also provided with a booster blade.
  • the booster blade forms an obtuse angle with the centrifugal blade.
  • the liquid will first flow to the booster blade under the action of centrifugation, and under constant high-speed rotation After the liquid passes through the booster blade, it continues to be thrown out, that is, a certain pressure is formed before the liquid is thrown out, so that the liquid thrown out by the centrifugal has a higher pressure, thereby increasing the water outlet pressure of the pump;
  • the impeller forms a centrifugal cavity for the function of centrifugal blades through a drainage plate and a bottom plate.
  • the drainage plate has communication holes to communicate the deflector and the centrifugal portion, so that the drainage and centrifugal operations can be well connected.
  • the drainage plate also has water resistance. Ring and drain hole, the water retaining ring can prevent the water guided by the deflector from flowing out of the side wall, causing a guide loss.
  • the drain hole has the function of assisting the communication hole to communicate with the water guide, and guides the water flowing to the water retaining ring during the guide. , And can also effectively reduce the weight of the impeller;
  • one end of the guide vane has a turbulence edge.
  • the impeller tells that the liquid flows on the surface of the guide vane when rotating, and is guided by the turbulence edge when it reaches the edge, which can effectively prevent the liquid from flowing on the guide vane. Impacts are formed everywhere, causing chaotic water flow and reducing the transmission efficiency of the pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种半开式导流增压叶轮，包括用于安装的轴套（1），轴套（1）的侧壁设有导流部（2）和离心部（3），导流部（2）包括若干倾斜设置的导流叶片（21），离心部（3）包括若干离心叶片（31），每个离心叶片（31）的末端皆设有增压叶（4），增压叶（4）与离心叶片（31）的引流面（311）之间形成有钝角（α），导流部（2）、离心部（3）和底板（5）按轴套（1）的轴向层叠排布，导流部（2）和离心部（3）之间还设有疏水板（6），导流部（2）与离心部（3）之间通过疏水板（6）的连通孔（61）连通。该叶轮提高了水泵的传输压力和传输效果。

Description

半开式导流增压叶轮 技术领域
本实用新型属于水泵技术领域，特别是涉及一种水泵的叶轮。
背景技术
叶轮式泵是通过工作叶轮带动液体高速转动，把机械能传递给液体，从而达到输送液体的目的，叶轮式泵包括旋涡式和离心式等，其中，离心泵是利用叶轮旋转而使水发生离心运动来工作的，离心泵在启动前，必须使泵壳和吸水管内充满水，然后启动电机，使泵轴带动叶轮和水做高速旋转运动，水发生离心运动，被甩向叶轮外缘，经泵壳的流道流入水泵的压水管路，离心泵的泵壳内的充水过程就需要其他方法完成；而旋涡式水泵的传输效率以及输出压力皆不如离心式泵。
实用新型内容
本实用新型主要解决的技术问题是提供一种半开式导流增压叶轮，其通过引流叶片将液体引入水泵壳体内，再通过离心叶片将液体输出，从而实现引流及输送液体的作业，有效的提高水泵的传输压力和传输效果。
为解决上述技术问题，本实用新型的采用的一个技术方案如下：
一种半开式导流增压叶轮，包括用于将所述叶轮安装至水泵轮轴的轴套，所述轴套的侧壁设有导流部和离心部，所述导流部包括若干倾斜设置且连接于所述轴套的导流叶片，所述离心部包括若干连接于所述轴套的离心叶片，所有所述导流叶片和离心叶片皆按所述轴套的圆周均布，每个所述离心叶片的末端皆设有增压叶，所述轴套位于离心部的一端设有底板，所述离心叶片和所述增压叶皆与所述底板垂直设置，所述增压叶与所述离心叶片的引流面之间形成有钝角，所述导流部、离心部和所述底板按所述轴套的轴向层叠排布，所述导流部和所述离心部之间还设有疏水板，所述疏水板为圆环形的疏水板，所述导流部与所述离心部之间通过所述疏水板的连通孔连通。
进一步地说，所述疏水板的外周设有挡水圈，所述挡水圈自所述疏水板的边缘延伸而出，且所述挡水圈与所述疏水板的板面垂直，且所述延伸的方向为朝向所述导流部所在的一侧。
进一步地说，所述疏水板的设有若干贯穿的疏水孔，所述疏水孔沿所述疏水板的轴心圆周均布，所述疏水孔为条形孔，所述腰型孔的两端为圆弧结构，且所述两端的圆弧的半径不同，其中半径较大的一端位于所述疏水板的外侧，半径较小的一端朝向所述疏水板的圆心。
进一步地说，所述疏水孔的数量为所述离心叶片的数量的2倍。
进一步地说，所述导流叶片与所述离心叶片的数量相等。
进一步地说，所述导流叶片的数量为10片。
进一步地说，所述导流叶片具有扰流边，所述扰流边为位于所述导流叶片靠近所述疏水板的一侧，且沿所述导流叶片的倾斜方向翘曲的弧形结构。
进一步地说，所述离心叶片与所述增压叶皆为弧形结构，且所述弧形的半径为3cm-6cm。
进一步地说，所述离心叶片与所述增压叶之间具有间隙,所述间隙为0.8mm-1.2mm。
进一步地说，每个所述增压叶的所述引流面与所述底板的切线形成的出射角为90°。
本实用新型的有益效果：
一、本实用新型的叶轮，具有倾斜设置的引流叶片和垂直于底板的离心叶片，在水泵工作时，所述导流部用于将液体引入，由于倾斜的叶片能形成一定的吸力，使之具有较好的引流能力，然后液体经连通孔流至所述离心部，离心叶片高速旋转，通过离心力的作用，最后将液体从增压叶处的出水口甩出，甩出的水再经由水泵的出水口排出，离心叶片的末端还设有增压叶，所述增压叶与离心叶片形成有钝角，通过钝角形成的遮挡，使液体在离心作用下，首先会流至增压叶，在不停的高速旋转下，液体经过增压叶后继续甩出，即、在液体甩出之前先形成一定的压力，使离心甩出的液体具有更高的压力，进而提高水泵的出水压力。
二、本实用新型的叶轮，通过疏水板和底板形成用于离心叶片作用的离心腔，其中疏水板具有连通孔，使导流部与离心部相连通，从而能够很好的衔接引流与离心作业，疏水板还具有挡水圈和疏水孔，挡水圈能够防止导流部所引导的水从侧壁流出，造成引导损失，疏水孔具有辅助连通孔连通导水的作用，将导引时流至挡水圈的水导出，并且还能够有效的减轻叶轮是重量；
另外，导流叶片的一端具有扰流边，所述叶轮告诉旋转时，液体在导流叶片的表面流动，在流至边缘的时候经过扰流边的引导，能够有效的防止液体在导流叶片处形成撞击，造成杂乱的水流而降低水泵的传输效率。
上述说明仅是本实用新型技术方案的概述，为了能够更清楚了解本实用新型的技术手段，并可依照说明书的内容予以实施，以下以本实用新型的较佳实施例并配合附图详细说明如后。
附图说明
图1是本实用新型的叶轮的整体结构示意图；
图2是本实用新型的叶轮的局部剖视图；
图3是图1的A-A向剖视图；
图4是图1的B-B向剖视图；
图5是图4的C向视图；
附图中各部分标记如下：
轴套1、导流部2、导流叶片21、扰流边211、离心部3、离心叶片31、引流面311、增压叶4、底板5、疏水板6、疏水孔62、连通孔61、挡水圈7、出水口8、间隙m、钝角α、出射角β。
具体实施方式
下面结合附图对本实用新型的较佳实施例进行详细阐述，以使本实用新型的优点和特征能更易于被本领域技术人员理解，从而对本实用新型的保护范围做出更为清楚明确的界定。
实施例：一种半开式导流增压叶轮，如图1所示：包括用于将所述叶轮安 装至水泵轮轴的轴套1，所述轴套的侧壁设有导流部2和离心部3；
如图2到图5所示：所述导流部包括若干倾斜设置且连接于所述轴套的导流叶片21，所述离心部包括若干连接于所述轴套的离心叶片31，所有所述导流叶片和离心叶片皆按所述轴套的圆周均布，每个所述离心叶片的末端皆设有增压叶4，所述轴套位于离心部的一端设有底板5，所述离心叶片和所述增压叶皆与所述底板垂直设置；
所述增压叶与所述离心叶片的引流面311之间形成有钝角α，所述导流部、离心部和所述底板按所述轴套的轴向层叠排布，所述导流部和所述离心部之间还设有疏水板6，所述疏水板为圆环形的疏水板，所述导流板与所述离心部之间通过所述疏水板的连通孔61连通，泵工作时，所述导流部将液体引入，倾斜的叶片具有较好的引导能力，然后液体经连通孔流至所述离心部，最后从增压叶处的出水口8流出。
所述疏水板的外周设有挡水圈7，所述挡水圈自所述疏水板的边缘延伸而出，且所述挡水圈与所述疏水板的板面垂直，且所述延伸的方向为朝向所述导流部所在的一侧。
所述疏水板的设有若干贯穿的疏水孔62，所述疏水孔沿所述疏水板的轴心圆周均布，所述疏水孔为条形孔，所述腰型孔的两端为圆弧结构，且所述两端的圆弧的半径不同，其中半径较大的一端位于所述疏水板的外侧，半径较小的一端朝向所述疏水板的圆心。
所述疏水孔的数量为所述离心叶片的数量的2倍。
所述导流叶片与所述离心叶片的数量相等。
所述导流叶片的数量为10片。
本实施例中，作为优选方案，所示导流叶片的数量为10片，所示离心叶片的数量为12片，所示疏水孔的数量为24个。
所述导流叶片具有扰流边211，所述扰流边为位于所述导流叶片靠近所述疏水板的一侧，且沿所述导流叶片的倾斜方向翘曲的弧形结构。
所述离心叶片与所述增压叶皆为弧形结构，且所述弧形的半径为3cm-6cm；
本实施例中，所述离心叶片的所述弧形的半径为5cm，所述增压叶的所述弧 形的半径为3cm。
所述离心叶片与所述增压叶之间具有间隙m,所述间隙为0.8mm-1.2mm；
本实施例中，作为优选方案，所述间隙为1mm。
每个所述增压叶的所述引流面与所述底板的切线形成的出射角β为90°。
本实用新型的工作过程和工作原理如下：
本叶轮具有倾斜设置的引流叶片和垂直于底板的离心叶片，在水泵工作时，所述导流部用于将液体引入，由于倾斜的叶片能形成一定的吸力，使之具有较好的引流能力，然后液体经连通孔流至所述离心部，离心叶片高速旋转，通过离心力的作用，最后将液体从增压叶处的出水口甩出，甩出的水再经由水泵的出水口排出，离心叶片的末端还设有增压叶，所述增压叶与离心叶片形成有钝角，通过钝角形成的遮挡，使液体在离心作用下，首先会流至增压叶，在不停的高速旋转下，液体经过增压叶后继续甩出，即、在液体甩出之前先形成一定的压力，使离心甩出的液体具有更高的压力，进而提高水泵的出水压力；
叶轮通过疏水板和底板形成用于离心叶片作用的离心腔，其中疏水板具有连通孔，使导流部与离心部相连通，从而能够很好的衔接引流与离心作业，疏水板还具有挡水圈和疏水孔，挡水圈能够防止导流部所引导的水从侧壁流出，造成引导损失，疏水孔具有辅助连通孔连通导水的作用，将导引时流至挡水圈的水导出，并且还能够有效的减轻叶轮是重量；
另外，导流叶片的一端具有扰流边，所述叶轮告诉旋转时，液体在导流叶片的表面流动，在流至边缘的时候经过扰流边的引导，能够有效的防止液体在导流叶片处形成撞击，造成杂乱的水流而降低水泵的传输效率。
以上所述仅为本实用新型的实施例，并非因此限制本实用新型的专利范围，凡是利用本实用新型说明书及附图内容所作的等效结构变换，或直接或间接运用在其他相关的技术领域，均同理包括在本实用新型的专利保护范围内。

Claims (10)

  1. 一种半开式导流增压叶轮，其特征在于：包括用于将所述叶轮安装至水泵轮轴的轴套(1)，所述轴套的侧壁设有导流部(2)和离心部(3)，所述导流部包括若干倾斜设置且连接于所述轴套的导流叶片(21)，所述离心部包括若干连接于所述轴套的离心叶片(31)，所有所述导流叶片和离心叶片皆按所述轴套的圆周均布，每个所述离心叶片的末端皆设有增压叶(4)，所述轴套位于离心部的一端设有底板(5)，所述离心叶片和所述增压叶皆与所述底板垂直设置，所述增压叶与所述离心叶片的引流面(311)之间形成有钝角(α)，所述导流部、离心部和所述底板按所述轴套的轴向层叠排布，所述导流部和所述离心部之间还设有疏水板(6)，所述疏水板为圆环形的疏水板，所述导流部与所述离心部之间通过所述疏水板的连通孔(61)连通。
  2. 根据权利要求1所述的半开式导流增压叶轮，其特征在于：所述疏水板的外周设有挡水圈(7)，所述挡水圈自所述疏水板的边缘延伸而出，且所述挡水圈与所述疏水板的板面垂直，所述延伸的方向为朝向所述导流部所在的一侧。
  3. 根据权利要求1所述的半开式导流增压叶轮，其特征在于：所述疏水板设有若干贯穿的疏水孔(62)，所述疏水孔以所述疏水板的轴心按圆周均布，所述疏水孔为条形孔，所述腰型孔的两端为圆弧结构，且所述两端的圆弧的半径不同，其中半径较大的一端位于所述疏水板的外侧，半径较小的一端朝向所述疏水板的圆心。
  4. 根据权利要求3所述的半开式导流增压叶轮，其特征在于：所述疏水孔的数量为所述离心叶片的数量的2倍。
  5. 根据权利要求1所述的半开式导流增压叶轮，其特征在于：所述导流叶片与所述离心叶片的数量相等。
  6. 根据权利要求1或5所述的半开式导流增压叶轮，其特征在于：所述导流叶片的数量为10片。
  7. 根据权利要求1所述的半开式导流增压叶轮，其特征在于：所述导流叶片具有扰流边(211)，所述扰流边为位于所述导流叶片靠近所述疏水板的一侧，且沿所述导流叶片的倾斜方向翘曲的弧形结构。
  8. 根据权利要求1所述的半开式导流增压叶轮，其特征在于：所述离心叶片与所述增压叶皆为弧形结构，且所述弧形的半径为3cm-6cm。
  9. 根据权利要求1所述的半开式导流增压叶轮，其特征在于：所述离心叶片与所述增压叶之间具有间隙(m),所述间隙为0.8mm-1.2mm。
  10. 根据权利要求1所述的半开式导流增压叶轮，其特征在于：每个所述增压叶的所述引流面与所述底板的切线形成的出射角(β)为90°。
PCT/CN2018/102183 2018-08-24 2018-08-24 半开式导流增压叶轮 WO2020037644A1 (zh)

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CN102822533A (zh) * 2010-02-04 2012-12-12 卡梅伦国际有限公司 非周期性离心式压缩机扩压器
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Publication number Priority date Publication date Assignee Title
US3006603A (en) * 1954-08-25 1961-10-31 Gen Electric Turbo-machine blade spacing with modulated pitch
CN1209194A (zh) * 1995-12-26 1999-02-24 英格索尔－备雷泽泵公司 具有分开的偏置进口叶片的泵轮
CN102822533A (zh) * 2010-02-04 2012-12-12 卡梅伦国际有限公司 非周期性离心式压缩机扩压器
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