WO2024255071A1 - 一种泵站浮式对旋消涡装置及泵站 - Google Patents

一种泵站浮式对旋消涡装置及泵站 Download PDF

Info

Publication number
WO2024255071A1
WO2024255071A1 PCT/CN2023/127804 CN2023127804W WO2024255071A1 WO 2024255071 A1 WO2024255071 A1 WO 2024255071A1 CN 2023127804 W CN2023127804 W CN 2023127804W WO 2024255071 A1 WO2024255071 A1 WO 2024255071A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump station
floating
counter
reversing
rotating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/127804
Other languages
English (en)
French (fr)
Inventor
潘强
张德胜
施卫东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu University
Original Assignee
Jiangsu University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu University filed Critical Jiangsu University
Priority to US18/700,711 priority Critical patent/US12385504B2/en
Priority to GB2405335.7A priority patent/GB2633885A/en
Publication of WO2024255071A1 publication Critical patent/WO2024255071A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
    • E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B5/00—Use of pumping plants or installations; Layouts thereof

Definitions

  • the present invention relates to the technical field of fluid machinery, and in particular to a pump station floating counter-rotating vortex elimination device and a pump station.
  • the pump station forebay or pump station inlet pool is a flow component that provides uniform flow for large water pumps. It is a hydraulic structure that directly absorbs water from the water supply pump or suction pipe. It is often used for flood control and drought relief, industrial and agricultural water use, and cooling systems of large power plants or nuclear power plants when equipped with large-flow axial (mixed) flow pumps.
  • the prior art discloses a floating vortex elimination device, which grooves the wall of the water inlet pool and installs a float, and hinders the formation of vortices through the contact between the float and the water surface.
  • the prior art discloses a floating net vortex elimination method, which installs a vortex elimination floating net on the water surface of the water inlet pool to eliminate vortices in a targeted manner.
  • this solution is affected by the size of the floating net mesh.
  • the present invention provides a floating counter-rotating vortex elimination device for a pump station and a pump station.
  • the floating device moves to the vortex under the traction of the water flow, and the driving disk rotates in the same direction as the vortex and drives the reverse blades to rotate in the opposite direction, thereby generating a reaction force to offset the vortex, weaken or eliminate the free liquid surface vortex, and provide a more uniform incoming flow for large water pumps.
  • the present invention achieves the above technical objectives through the following technical means.
  • a floating counter-rotating vortex elimination device for a pump station comprises a floating drive plate, a counter-rotating gear box, a reversing plate, a plane bearing, an elastic element and a counterweight; the floating drive plate floats on the liquid surface near the water suction end of the pump station, and the floating drive plate is driven to rotate by the power generated by the vortex; the floating drive plate is connected to the reversing plate through the counter-rotating gear box, so as to make the reversing plate and the floating drive plate rotate in different directions; a plane bearing is installed at the bottom of the reversing plate, and the plane bearing is connected to the counterweight through the elastic element to prevent tilting.
  • the floating drive disk includes drive blades, a buoyancy disk, a drive disk hub, a drive shaft and a drive bevel gear; a plurality of drive blades are evenly distributed between the buoyancy disk and the drive disk hub, the upper end of the drive shaft is connected to the drive disk hub, and the lower end of the drive shaft is connected to the drive bevel gear.
  • the power generated by the vortex is applied to the drive blades to make the floating drive disk and the vortex rotate in the same direction.
  • the cross-sectional shape of the driving blade is a quarter of a circular ring, the driving blades are distributed radially and have the same thickness, the inlet and outlet of the driving blades are respectively rounded, and the number of the driving blades is 3-6.
  • the outer contour of the buoyancy disk is a circular stretched body
  • the inner diameter of the buoyancy disk is R 1
  • the outer diameter of the buoyancy disk is R 2
  • the height of the buoyancy disk is H
  • the interior thereof is a cavity
  • the volume of the buoyancy disk satisfies the following conditions:
  • ⁇ is the density of water
  • M is the total mass of the floating counter-rotating vortex elimination device of the pump station
  • k is the buoyancy coefficient. number.
  • the reversing disk includes a reversing blade, a reversing disk hub, a reversing shaft and a reversing bevel gear; the inner edge of the reversing blade is connected to the reversing disk hub; the upper end of the reversing shaft is connected to the counter-rotating gear box, and the lower end of the reversing shaft is connected to the reversing disk hub, and the reversing disk has an opposite rotation direction to the vortex.
  • the ratio of the outer diameter r1 of the reversing blade to the outer diameter R1 of the driving blade is generally 0.6-0.8; the cross-sectional shape of the reversing blade is rectangular, the height of the reversing blade is h, the width of the reversing blade is w, and the following conditions are satisfied: h ⁇ H and h ⁇ 2w.
  • two transmission bevel gears are coaxially installed in the horizontal direction inside the counter-rotating gearbox, and a driving bevel gear and a reverse bevel gear are coaxially installed in the vertical direction inside the counter-rotating gearbox; the two transmission bevel gears are respectively meshed with the driving bevel gear; the two transmission bevel gears are respectively meshed with the reverse bevel gear; the driving bevel gear drives the reverse bevel gear to rotate in the opposite direction through the two transmission bevel gears.
  • the mass m of the counterweight satisfies the following condition: m ⁇ 0.3M, where M is the total mass of the floating counter-rotating vortex elimination device of the pump station.
  • a traction rope is connected between the water suction end of the pump station and the counterweight; the connection point between the traction rope and the water suction end of the pump station is located at the middle position between the liquid surface and the inlet of the water suction end; the length L of the traction rope satisfies the following conditions: (T-t) ⁇ L ⁇ 0.8(T-t);
  • T-t is the vertical distance between the liquid surface and the water suction inlet.
  • a pump station comprises at least two of the above-mentioned floating counter-rotating vortex elimination devices, wherein the first pump station floating counter-rotating vortex elimination device is located on one side of the liquid surface near the suction end of the pump station; the second pump station floating counter-rotating vortex elimination device is located on the other side of the liquid surface near the suction end of the pump station; the driving directions of the driving blades of the first pump station floating counter-rotating vortex elimination device and the driving directions of the driving blades of the second pump station floating counter-rotating vortex elimination device are different; the first pump station floating counter-rotating vortex elimination device is used to eliminate the vortex on the liquid surface in the clockwise direction; the second pump station floating counter-rotating vortex elimination device is used to eliminate the vortex on the liquid surface in the counterclockwise direction.
  • the floating counter-rotating vortex elimination device for a pump station described in the present invention has a buoyancy disk that generates a buoyancy greater than the total mass of the vortex elimination device, ensuring that the vortex elimination device floats on the water surface, and when a vortex is generated on the liquid surface, the vortex elimination device can be suspended and moved to the vortex under the force of the liquid flow to perform targeted vortex elimination and vortex suppression.
  • the driving blades turn in the same direction as the vortex under the action of the vortex, and the counter-rotating gearbox is used to make the counter-rotating blades generate a reverse speed, thereby generating a reverse flow locally on the counter-rotating blades, offsetting the vortex on the liquid surface and suppressing its downward development.
  • the floating counter-rotating vortex elimination device for a pump station described in the present invention has a spring and a counterweight that provide stability for the floating device due to the large wave fluctuations on the water surface of a large pump station.
  • the weight of the counterweight generally exceeds 30% of the overall weight of the floating device. Even if the floating device tilts or flips, the counterweight can restore the floating device to a vertical position by its own gravity.
  • the floating counter-rotating vortex elimination device for the pump station of the present invention can prevent the floating device from drifting away from the suction pipe when there is no vortex or the vortex is weak on the water surface of the pump station.
  • the length of the traction rope is designed with a maximum and a minimum value. The maximum length is to prevent the floating device from colliding with the pump blades after entering the suction pipe under extreme working conditions, and the minimum length is to ensure that the floating device can float on the water surface.
  • the pump station described in the present invention is installed with at least two of the above-mentioned floating counter-rotating vortex elimination devices of the pump station, and the driving directions of the driving blades of the first pump station floating counter-rotating vortex elimination device and the second pump station floating counter-rotating vortex elimination device are different; the first pump station floating counter-rotating vortex elimination device is used to eliminate the vortex on the liquid surface in the clockwise direction; the second pump station floating counter-rotating vortex elimination device is used to eliminate the vortex on the liquid surface in the counterclockwise direction; and the driving blades of the first pump station floating counter-rotating vortex elimination device are type I blades, and type I blades are installed on the left side of the pump station suction end (if the right-hand screw rule is used at this time, the liquid surface vortex rotates clockwise); the driving blades of the second pump station floating counter-rotating vortex elimination device are type II blades, and type II blades are installed on the right side of the pump station suction end (if the right-hand screw rule
  • FIG1 is a schematic diagram of the installation of a floating counter-rotating vortex elimination device for a pump station according to the present invention.
  • FIG2 is a structural diagram of the pump station floating counter-rotating vortex elimination device described in the present invention.
  • FIG. 3 is a schematic diagram showing that the driving blades of the floating driving disk according to the present invention are of type I.
  • FIG. 3 is a schematic diagram showing that the driving blades of the floating driving disk according to the present invention are of type I.
  • FIG. 4 is a schematic diagram showing that the driving blades of the floating driving disk according to the present invention are of type II.
  • FIG. 5 is a cross-sectional view of the floating drive disk according to the present invention.
  • FIG. 6 is a schematic diagram of a counter-rotating gearbox according to the present invention.
  • FIG. 7 is a schematic diagram of the reversal disk of the present invention.
  • Figure 8 is a simulation diagram of the liquid level without installing the pump station floating counter-rotating vortex elimination device.
  • Figure 9 is a simulation diagram of the liquid level of the floating counter-rotating vortex elimination device installed in the pump station.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
  • the features defined as “first” and “second” may explicitly or implicitly include one or more of the features.
  • the meaning of “multiple” is two or more, unless otherwise clearly and specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components.
  • installed can be a fixed connection, a detachable connection, or an integral connection
  • it can be a mechanical connection or an electrical connection
  • it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components.
  • the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
  • the suction pipe 8 is generally installed at the inlet end of the water pump, which is the suction end of the pump station; when the water pump is running, the liquid flow moves in the direction shown in the figure.
  • the flow rate is large or the water level of the horizontal plane 9 is low, a vortex is often generated on the horizontal plane 9.
  • the vortex After the vortex enters the suction pipe 8 with the liquid flow, it will affect the efficiency and stability of the water pump. As the vortex strength increases, it may even cause the vortex to entrain air into the flow, causing the efficiency and stability of the water pump to be greatly reduced.
  • the floating counter-rotating vortex elimination device of the pump station described in the present invention includes a floating drive disk 1, a counter-rotating gear box 2, a reversing disk 3, a plane bearing 4, a spring 5 and a counterweight 6.
  • the floating drive disk 1 floats on the liquid surface near the suction end of the pump station, and the floating drive disk 1 is driven to rotate by the power generated by the vortex;
  • the floating drive disc 1 ensures that the entire device floats on the water surface and maintains the same rotation direction as the vortex under the action of the vortex; the floating drive disc 1 is connected to the reversing disc 3 through the counter-rotating gear box 2, and the reversing disc 3 and the floating drive disc 1 have the same rotation speed and opposite rotation direction through the counter-rotating gear box 2.
  • a plane bearing 4 is installed at the bottom of the reversing disc 3, and the plane bearing 4 is connected to the counterweight 6 through a spring 5 to prevent tilting.
  • the lower end of the plane bearing 4 is connected to the spring 5, and when the reversing disc 3 rotates, the spring 5 remains stationary.
  • the lower end of the spring 5 is connected to the counterweight 6.
  • the floating drive disc 1 includes a drive blade 11, a buoyancy disc 12, a drive disc hub 13, a drive shaft 14 and a drive bevel gear 15; a plurality of drive blades 11 are evenly distributed between the buoyancy disc 12 and the drive disc hub 13, the upper end of the drive shaft 14 is connected to the drive disc hub 13, and the lower end of the drive shaft 14 is connected to the drive bevel gear 15, and the power generated by the vortex is applied to the drive blade 11, so as to make the floating drive disc 1 rotate in the same direction as the vortex.
  • the cross-sectional shape of the drive blade 11 is a quarter of a circular ring, the drive blades 11 are distributed radially and have the same thickness, the inlet and outlet of the drive blade 11 are respectively rounded transition processed, and the number of blades of the drive blade 11 is 3-6.
  • the A-A cross-sectional shape of the driving blade 11 is classified into type I, and the cross-sectional shape of the type I driving blade is one-fourth of a circle and is located in the fourth quadrant; as shown in Fig. 4, the B-B cross-sectional shape of the driving blade 11 is classified into type II, and the cross-sectional shape of the type II driving blade is one-fourth of a circle and is located in the third quadrant.
  • the axis of the vortex generated on the left side of the suction pipe 8 is vertically downward, and the type I driving blade is installed; when the axis of the vortex generated on the right side of the suction pipe 8 is vertically upward, the type II driving blade is installed, so that the rotating liquid flow can be ensured to move along the driving blade 11 and be guided directly upward, preventing the vortex from sinking and causing air entrainment.
  • the outer contour of the buoyancy disk 12 is a circular stretching body, the inner diameter of the buoyancy disk 12 is R 1 , the outer diameter of the buoyancy disk 12 is R 2 , the height of the buoyancy disk 12 is H, and the interior is a cavity.
  • the volume of the buoyancy disk 12 is full The following conditions apply:
  • ⁇ is the density of water
  • M is the total mass of the floating counter-rotating vortex elimination device of the pump station
  • k is the buoyancy coefficient, which is usually 0.5-0.8.
  • the outer contour of the buoyancy disk 12 is a tubular structure with an inner diameter of R1, an outer diameter of R2, and a height of H.
  • the interior is a cavity.
  • the buoyancy generated by the buoyancy disk 12 should be at least greater than the total mass of the vortex elimination device. For example, if k takes a value of 0.5, the maximum buoyancy generated when the buoyancy disk is completely immersed in water is 2M.
  • two transmission bevel gears 22 are coaxially installed in the horizontal direction inside the counter-rotating gear box 2, and a driving bevel gear 15 and a reverse bevel gear 34 are coaxially installed in the vertical direction inside the counter-rotating gear box 2; the two transmission bevel gears 22 are respectively meshed with the driving bevel gear 15; the two transmission bevel gears 22 are respectively meshed with the reverse bevel gear 34; the driving bevel gear 15 drives the reverse bevel gear 34 to rotate in the opposite direction through the two transmission bevel gears 22.
  • the reversing disk 3 comprises a reversing blade 31, a reversing disk hub 32, a reversing shaft 33 and a reversing bevel gear 34; the inner edge of the reversing blade 31 is connected to the reversing disk hub 32; the upper end of the reversing shaft 33 is connected to the counter-rotating gear box 2, and the lower end of the reversing shaft 33 is connected to the reversing disk hub 32.
  • the reversing disk 3 rotates in the opposite direction to the vortex, that is, the reversing disk 3 rotates in the opposite direction to the floating drive disk 1.
  • the ratio of the outer diameter r1 of the reversing blade 31 to the outer diameter R1 of the driving blade 11 is generally 0.6 to 0.8; in order to achieve the purpose of stirring and vortexing to the greatest extent, the reversing blade 31 is distributed radially and has a rectangular cross-sectional shape, the height of the reversing blade 31 is h, and the width of the reversing blade 31 is w, which satisfies the following conditions: h ⁇ H and h ⁇ 2w.
  • a traction rope 7 is connected between the suction end of the pump station and the counterweight 6; one end of the traction rope 7 is connected to the counterweight 6, and the other end is connected to the suction pipe 8, and the connection point with the suction pipe 8 is located in the middle position between the liquid surface 9 and the lower edge of the suction pipe 8.
  • the traction rope 7 should have a certain length L, but it is also necessary to prevent the traction rope 7 from being too long, causing the floating device to be sucked into the suction pipe under extreme working conditions, and colliding with the pump blades to cause damage to the pump device. Therefore, the length L of the traction rope 7 is generally limited to meet the following conditions: (T-t) ⁇ L ⁇ 0.8(T-t);
  • T-t is the vertical distance between the liquid surface 9 and the inlet of the water suction end.
  • T is the vertical height of the liquid surface 9 from the bottom surface 10 of the forebay, and t is the vertical height of the lower edge of the water suction pipe 8 from the bottom surface 10 of the forebay.
  • FIG. 8 and 9 the effect of the floating counter-rotating vortex elimination device of the pump station of the present invention was observed through numerical simulation, and a rotating flow was artificially generated in the cylindrical flow field by means of wall rotation.
  • the above figure is a cross-sectional schematic diagram of the cylindrical flow field, with rotating walls on both sides.
  • the variable used in the cloud map is the Q criterion, which is a dimensionless parameter that characterizes the vortex intensity. Since the cylindrical rotation generates an artificial vortex, it can be seen that the maximum vortex value (red area) appears on both sides of the wall and gradually decreases toward the middle. After the vortex elimination device is configured, the local vortex intensity of the vortex elimination device is lower, and the vortex elimination device has a dissipative effect on the transmission of the vortex.
  • a pump station comprises at least two of the above-mentioned floating counter-rotating vortex elimination devices, wherein the first pump station floating counter-rotating vortex elimination device is located on one side of the liquid surface near the suction end of the pump station; the second pump station floating counter-rotating vortex elimination device is located on the other side of the liquid surface near the suction end of the pump station; the driving directions of the driving blades 11 of the first pump station floating counter-rotating vortex elimination device and the driving directions of the driving blades 11 of the second pump station floating counter-rotating vortex elimination device are different; the first pump station floating counter-rotating vortex elimination device is used to eliminate the vortex on the liquid surface in the clockwise direction; the second pump station floating counter-rotating vortex elimination device is used to eliminate the vortex on the liquid surface in the counterclockwise direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

本发明提供了一种泵站浮式对旋消涡装置及泵站，包括浮式驱动盘、对旋齿轮箱、反转盘、平面轴承、弹性元件和配重；所述浮式驱动盘漂浮在泵站吸水端附近的液面，通过旋涡产生的动力带动浮式驱动盘转动；所述浮式驱动盘通过对旋齿轮箱与反转盘连接，用于使反转盘与浮式驱动盘的转动方向相异；所述反转盘底部安装平面轴承，所述平面轴承上通过弹性元件与配重连接，用于防止倾斜。本发明可产生反作用力抵消旋涡，削弱或消除自由液面旋涡，为大型水泵提供更加均匀的来流。

Description

一种泵站浮式对旋消涡装置及泵站 技术领域
本发明涉及流体机械技术领域，特别涉及一种泵站浮式对旋消涡装置及泵站。
背景技术
泵站前池或泵站进水池是为大型水泵提供均匀来流的过流部件，是供水泵或吸水管直接吸水的水工建筑物，搭配大流量轴(混)流泵常用于防洪抗旱，工农业用水以及大型电厂或核电站的冷却系统。在泵站进水池内部不同工况的流动中存在多种旋涡，根据诱发位置可分为自由表面涡和液下涡，这些高度不稳定的旋涡会影响水泵吸入口的流态，造成叶轮载荷的不均匀分布，影响运行效率，甚至引起水泵汽蚀，产生噪声及震动，严重时导致水泵不能正常运行。研究表明，合理的消旋消涡装置可使进水池内的流态稳定，为大型水泵提供均匀来流，有助于水泵的高效、稳定运行。
目前国内关于泵站前池消涡装置的专利主要集中在设计消涡水工建筑，现有技术公开了浮动式消除漩涡装置，在进水池壁面开槽并安装浮筒，通过浮筒与水面的接触阻碍旋涡形成，但该方案的建造和维护成本高，使用不灵活，对于大型泵站前池实用性较低。现有技术公开了浮网消涡方法，在进水池水面安装消涡浮网，针对性的消除旋涡，但该方案一方面受浮网网格尺寸的影响，网格太小会造成水力损失严重，网格太大会产生小于网格尺寸的旋涡；另一方面，当进水池内部水位变化时，需要根据水位重新安装浮网，耗时耗力，维护成本也大幅上升。
发明内容
针对现有技术中存在的不足，本发明提供了一种泵站浮式对旋消涡装置及泵站，当水面产生旋涡时，浮式装置在水流牵引作用下运动至旋涡处，驱动盘与旋涡旋向相同并带动反转叶片反向旋转，产生反作用力抵消旋涡，削弱或消除自由液面旋涡，为大型水泵提供更加均匀的来流。
本发明是通过以下技术手段实现上述技术目的的。
一种泵站浮式对旋消涡装置，包括浮式驱动盘、对旋齿轮箱、反转盘、平面轴承、弹性元件和配重；所述浮式驱动盘漂浮在泵站吸水端附近的液面，通过旋涡产生的动力带动浮式驱动盘转动；所述浮式驱动盘通过对旋齿轮箱与反转盘连接，用于使反转盘与浮式驱动盘的转动方向相异；所述反转盘底部安装平面轴承，所述平面轴承上通过弹性元件与配重连接，用于防止倾斜。
进一步，所述浮式驱动盘包括驱动叶片、浮力盘、驱动盘轮毂、驱动轴和驱动锥齿轮；在浮力盘与驱动盘轮毂之间均布若干驱动叶片，所述驱动轴上端与驱动盘轮毂连接，所述驱动轴下端与驱动锥齿轮连接，通过旋涡产生的动力施加在驱动叶片上，用于使浮式驱动盘与旋涡的转动方向相同。
进一步，所述驱动叶片的截面形状为四分之一的圆环型，所述驱动叶片沿径向分布且厚度相同，所述驱动叶片的进口处和出口处分别倒圆过渡处理，所述驱动叶片的叶片数为3-6个。
进一步，所述浮力盘外轮廓为圆环拉伸体，所述浮力盘内径为R1，所述浮力盘外径为R2，所述浮力盘高度为H，其内部为空腔，浮力盘的体积满足下面条件：
式中，ρ为水的密度；M为泵站浮式对旋消涡装置的总质量；k为浮力系 数。
进一步，所述反转盘包括反转叶片、反转盘轮毂、反转轴和反转锥齿轮；所述反转叶片的内缘与反转盘轮毂连接；所述反转轴上端与对旋齿轮箱连接，反转轴下端与反转盘轮毂连接，所述反转盘与旋涡的转动方向相反。
进一步，所述反转叶片外径r1与驱动叶片外径R1比值一般为0.6～0.8；所述反转叶片的横截面形状为矩形，所述反转叶片的高度为h，所述反转叶片的宽度为w，满足下面条件：h≥H且h≥2w。
进一步，所述对旋齿轮箱内部水平方向分别同轴安装两个传动锥齿轮，所述对旋齿轮箱内部垂直方向分别同轴安装驱动锥齿轮和反转锥齿轮；两个所述传动锥齿轮分别与驱动锥齿轮啮合；两个所述传动锥齿轮分别与反转锥齿轮啮合；所述驱动锥齿轮通过两个传动锥齿轮驱动反转锥齿轮反向转动。
进一步，所述配重的质量m满足下面条件：m≥0.3M，M为泵站浮式对旋消涡装置的总质量。
进一步，所述泵站吸水端与配重之间连接牵引索；所述牵引索与泵站吸水端的连接点位于液面与吸水端进口处之间的中间位置；所述牵引索的长度L满足下面条件：(T-t)≥L≥0.8(T-t)；
式中，T-t为液面与吸水端进口处之间的垂直距离。
一种泵站，至少包括2个所述的泵站浮式对旋消涡装置，第一泵站浮式对旋消涡装置位于泵站吸水端附近的液面一侧；第二泵站浮式对旋消涡装置位于泵站吸水端附近的液面另一侧；所述第一泵站浮式对旋消涡装置的驱动叶片与第二泵站浮式对旋消涡装置的驱动叶片的驱动方向相异；所述第一泵站浮式对旋消涡装置用于消除液面顺时针方向的漩涡；所述第二泵站浮式对旋消涡装置用于消除液面逆时针方向的漩涡。
本发明的有益效果在于：
1.本发明所述的泵站浮式对旋消涡装置，其浮力盘产生的浮力大于消涡装置总质量，保证消涡装置浮于水面，且当液面产生旋涡时，在液流作用力下，消涡装置可悬浮运动至旋涡处进行针对性的消涡和抑涡。驱动叶片在旋涡作用下与旋涡转向一致，通过对旋齿轮箱使反转叶片产生反向转速，从而在反转叶片局部产生反转流动，抵消液面旋涡，抑制其向下发展。
2.本发明所述的泵站浮式对旋消涡装置，由于大型泵站水面的波浪起伏较大，弹簧与配重锤提供稳定浮式装置的作用，此外，配重锤重量一般超过浮式装置整体重量的30％，即使浮式装置发生倾斜或翻转，配重锤也可以靠自身重力使浮式装置恢复竖直姿态。
3.本发明所述的泵站浮式对旋消涡装置，当泵站水面没有旋涡或旋涡较弱时，牵引索可以防止浮式装置漂离吸水管周边。牵引索的长度设计了最大值和最小值，最大长度是防止浮式装置在极端工况下进入吸水管后与泵叶片发生碰撞，最小长度是为了保证浮式装置可浮于水面。
4.本发明所述的泵站，至少安装2个所述的泵站浮式对旋消涡装置，所述第一泵站浮式对旋消涡装置的驱动叶片与第二泵站浮式对旋消涡装置的驱动叶片的驱动方向相异；所述第一泵站浮式对旋消涡装置用于消除液面顺时针方向的漩涡；所述第二泵站浮式对旋消涡装置用于消除液面逆时针方向的漩涡；而第一泵站浮式对旋消涡装置的驱动叶片为I型叶片，I型叶片安装在泵站吸水端左侧(此时若采用右手螺旋定则，液面旋涡顺时针旋转)；第二泵站浮式对旋消涡装置的驱动叶片为II型叶片，II型叶片安装在泵站吸水端右侧(此时若采用右手螺旋定则，液面旋涡逆时针旋转)；其目的是使液面旋涡顺着驱动叶片运动并向正上方导向，阻碍旋涡下沉运动产生空气夹带。反转叶片截面为长方形且 叶片沿径向分布，可最大程度上起到搅拌造涡的效果，抵消液面旋涡。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，下面描述中的附图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，显而易见地还可以根据这些附图获得其他的附图。
图1为本发明所述的泵站浮式对旋消涡装置安装示意图。
图2为本发明所述的泵站浮式对旋消涡装置结构图。
图3为本发明所述的浮式驱动盘的驱动叶片为I型的示意图。
图4为本发明所述的浮式驱动盘的驱动叶片为II型的示意图。
图5为本发明所述的浮式驱动盘的剖视图。
图6为本发明所述的对旋齿轮箱示意图。
图7为本发明所述的反转盘示意图。
图8为未安装泵站浮式对旋消涡装置液面模拟图。
图9为安装泵站浮式对旋消涡装置液面模拟图。
图中：
1-浮式驱动盘；11-驱动叶片；12-浮力盘；13-驱动盘轮毂；14-驱动轴；15-
驱动锥齿轮；2-对旋齿轮箱；21-箱盖；22-传动锥齿轮；23-滚动轴承；3-反转盘；31-反转叶片；32-反转盘轮毂；33-反转轴；34-反转锥齿轮；4-平面轴承；5-弹簧；6-配重；7-牵引索；8-吸水管；9-液面；10-前池底面。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。 下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“轴向”、“径向”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
如图1和图2所示，吸水管8一般安装在水泵进口端，即为泵站吸水端；当水泵运行时，液流按图中所示方向运动，当流量较大或水平面9的水位较低时，往往会在水平面9产生旋涡，旋涡随液流进入吸水管8后，会影响水泵的效率和稳定性。随着旋涡强度增强，甚至会导致旋涡夹带空气入流，造成水泵效率和稳定性大幅降低。本发明所述的泵站浮式对旋消涡装置，包括浮式驱动盘1，对旋齿轮箱2，反转盘3，平面轴承4，弹簧5和配重6。所述浮式驱动盘1漂浮在泵站吸水端附近的液面，通过旋涡产生的动力带动浮式驱动盘1转动； 所述浮式驱动盘1保证整个装置浮于水面，且在旋涡作用下和旋涡保持相同旋向；所述浮式驱动盘1通过对旋齿轮箱2与反转盘3连接，通过对旋齿轮箱2使反转盘3与浮式驱动盘1的转速相同，旋向相反。所述反转盘3底部安装平面轴承4，所述平面轴承4上通过弹簧5与配重6连接，用于防止倾斜。平面轴承4下端连接弹簧5，当反转盘3旋转时，弹簧5保持静止。弹簧5下端连接配重6，当液面9有波浪波动时，弹簧5和配重6可以起到稳定浮式装置的作用，此外，当浮式装置发生倾斜或翻转，配重6可以靠自身重力使浮式装置恢复竖直姿态。
如图5所示，所述浮式驱动盘1包括驱动叶片11、浮力盘12、驱动盘轮毂13、驱动轴14和驱动锥齿轮15；在浮力盘12与驱动盘轮毂13之间均布若干驱动叶片11，所述驱动轴14上端与驱动盘轮毂13连接，所述驱动轴14下端与驱动锥齿轮15连接，通过旋涡产生的动力施加在驱动叶片11上，用于使浮式驱动盘1与旋涡的转动方向相同。所述驱动叶片11的截面形状为四分之一的圆环型，所述驱动叶片11沿径向分布且厚度相同，所述驱动叶片11的进口处和出口处分别倒圆过渡处理，所述驱动叶片11的叶片数为3-6个。如图3所示，驱动叶片11的A-A截面形状分为I型，I型驱动叶片截面形状为圆环的四分之一且位于第四象限；如图4所示，驱动叶片11的B-B截面形状分为II型，II型驱动叶片截面形状为圆环的四分之一且位于第三象限。当视角沿液流方向时，按照右手螺旋定则，吸水管8左侧产生的旋涡轴线竖直向下，安装I型驱动叶片；当吸水管8右侧产生的旋涡轴线竖直向上，安装II型驱动叶片，如此可保证旋转液流顺着驱动叶片11运动，并向正上方导向，阻碍旋涡下沉产生空气夹带。
所述浮力盘12外轮廓为圆环拉伸体，所述浮力盘12内径为R1，所述浮力盘12外径为R2，所述浮力盘12高度为H，其内部为空腔，浮力盘12的体积满 足下面条件：
式中，ρ为水的密度；M为泵站浮式对旋消涡装置的总质量；k为浮力系数，通常取0.5-0.8。
实施例中浮力盘12外轮廓为管状结构，内径为R1，外径为R2，高度为H，其内部为空腔，浮力盘12产生的浮力至少应大于消涡装置总质量，如k取值0.5，即浮力盘全部浸入水下时产生的最大浮力为2M。
如图6所示，所述对旋齿轮箱2内部水平方向分别同轴安装两个传动锥齿轮22，所述对旋齿轮箱2内部垂直方向分别同轴安装驱动锥齿轮15和反转锥齿轮34；两个所述传动锥齿轮22分别与驱动锥齿轮15啮合；两个所述传动锥齿轮22分别与反转锥齿轮34啮合；所述驱动锥齿轮15通过两个传动锥齿轮22驱动反转锥齿轮34反向转动。
如图7所示，所述反转盘3包括反转叶片31、反转盘轮毂32、反转轴33和反转锥齿轮34；所述反转叶片31的内缘与反转盘轮毂32连接；所述反转轴33上端与对旋齿轮箱2连接，反转轴33下端与反转盘轮毂32连接，所述反转盘3与旋涡的转动方向相反，即反转盘3的与浮式驱动盘1的转向相反。由于旋涡轮廓为锥形，所述反转叶片31外径r1与驱动叶片11外径R1比值一般为0.6～0.8；为了最大程度实现搅拌造涡目的，所述反转叶片31沿径向分布且横截面形状为矩形，所述反转叶片31的高度为h，所述反转叶片31的宽度为w，满足下面条件：h≥H且h≥2w。
如图1所示，弹簧5下端连接配重6，配重6具有一定的重量m，其取值可根据实际运行条件下液面波动程度而定，但至少应设置为消涡装置整体重量M的30％，即m＝0.3M。当液面波动幅度较大时，配重6的重量m可设置为消涡 装置整体重量M的50％，即m＝0.5M。
如图1所示，所述泵站吸水端与配重6之间连接牵引索7；牵引索7一端连接配重6，一端连接吸水管8，且与吸水管8的连接点位于液面9和吸水管8下沿的中间位置。为了确保浮式装置可以自由漂浮至液面旋涡处，牵引索7应具有一定的长度L，但也要防止牵引索7过长而导致浮式装置在极端工况下吸入吸水管，并与泵叶片发生碰撞导致泵装置损毁，因此，限制牵引索7的长度L一般满足下面条件：(T-t)≥L≥0.8(T-t)；
式中，T-t为液面9与吸水端进口处之间的垂直距离。T为液面9距离前池底面10的垂直高度，t为吸水管8下沿距离前池底面10的垂直高度。
如图8和图9所示，通过数值模拟观测本发明的泵站浮式对旋消涡装置的效果，采用壁面旋转的方式，在圆柱流场中人为产生旋转流动。上图为圆柱流场的截面示意图，两侧为旋转壁面，云图中采用的变量为Q准则，是表征旋涡强度的无量纲参数。由于柱面旋转产生人造旋涡，可以看到旋涡最大值(红色区域)出现在壁面两侧，且向中间逐渐降低，在配置消涡装置后，消涡装置局部的旋涡强度更低，消涡装置对旋涡的传递具有耗散作用。
一种泵站，至少包括2个所述的泵站浮式对旋消涡装置，第一泵站浮式对旋消涡装置位于泵站吸水端附近的液面一侧；第二泵站浮式对旋消涡装置位于泵站吸水端附近的液面另一侧；所述第一泵站浮式对旋消涡装置的驱动叶片11与第二泵站浮式对旋消涡装置的驱动叶片11的驱动方向相异；所述第一泵站浮式对旋消涡装置用于消除液面顺时针方向的漩涡；所述第二泵站浮式对旋消涡装置用于消除液面逆时针方向的漩涡。
应当理解，虽然本说明书是按照各个实施例描述的，但并非每个实施例仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域 技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。
上文所列出的一系列的详细说明仅仅是针对本发明的可行性实施例的具体说明，它们并非用以限制本发明的保护范围，凡未脱离本发明技艺精神所作的等效实施例或变更均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种泵站浮式对旋消涡装置，其特征在于，包括浮式驱动盘(1)、对旋齿轮箱(2)、反转盘(3)、平面轴承(4)、弹性元件和配重(6)；所述浮式驱动盘(1)漂浮在泵站吸水端附近的液面，通过旋涡产生的动力带动浮式驱动盘(1)转动；所述浮式驱动盘(1)通过对旋齿轮箱(2)与反转盘(3)连接，用于使反转盘(3)与浮式驱动盘(1)的转动方向相异；所述反转盘(3)底部安装平面轴承(4)，所述平面轴承(4)上通过弹性元件与配重(6)连接，用于防止倾斜。
  2. 根据权利要求1所述的泵站浮式对旋消涡装置，其特征在于，所述浮式驱动盘(1)包括驱动叶片(11)、浮力盘(12)、驱动盘轮毂(13)、驱动轴(14)和驱动锥齿轮(15)；在浮力盘(12)与驱动盘轮毂(13)之间均布若干驱动叶片(11)，所述驱动轴(14)上端与驱动盘轮毂(13)连接，所述驱动轴(14)下端与驱动锥齿轮(15)连接，通过旋涡产生的动力施加在驱动叶片(11)上，用于使浮式驱动盘(1)与旋涡的转动方向相同。
  3. 根据权利要求2所述的泵站浮式对旋消涡装置，其特征在于，所述驱动叶片(11)的截面形状为四分之一的圆环型，所述驱动叶片(11)沿径向分布且厚度相同，所述驱动叶片(11)的进口处和出口处分别倒圆过渡处理，所述驱动叶片(11)的叶片数为3-6个。
  4. 根据权利要求2所述的泵站浮式对旋消涡装置，其特征在于，所述浮力盘(12)外轮廓为圆环拉伸体，所述浮力盘(12)内径为R1，所述浮力盘(12)外径为R2，所述浮力盘(12)高度为H，其内部为空腔，浮力盘(12)的体积满足下面条件：
    式中，ρ为水的密度；M为泵站浮式对旋消涡装置的总质量；k为浮力系数。
  5. 根据权利要求2所述的泵站浮式对旋消涡装置，其特征在于，所述反转盘(3)包括反转叶片(31)、反转盘轮毂(32)、反转轴(33)和反转锥齿轮(34)；所述反转叶片(31)的内缘与反转盘轮毂(32)连接；所述反转轴(33)上端与对旋齿轮箱(2)连接，反转轴(33)下端与反转盘轮毂(32)连接，所述反转盘(3)与旋涡的转动方向相反。
  6. 根据权利要求5所述的泵站浮式对旋消涡装置，其特征在于，所述反转叶片(31)外径r1与驱动叶片(11)外径R1比值一般为0.6～0.8；所述反转叶片(31)的横截面形状为矩形，所述反转叶片(31)的高度为h，所述反转叶片(31)的宽度为w，满足下面条件：h≥H且h≥2w。
  7. 根据权利要求1所述的泵站浮式对旋消涡装置，其特征在于，所述对旋齿轮箱(2)内部水平方向分别同轴安装两个传动锥齿轮(22)，所述对旋齿轮箱(2)内部垂直方向分别同轴安装驱动锥齿轮(15)和反转锥齿轮(34)；两个所述传动锥齿轮(22)分别与驱动锥齿 轮(15)啮合；两个所述传动锥齿轮(22)分别与反转锥齿轮(34)啮合；所述驱动锥齿轮(15)通过两个传动锥齿轮(22)驱动反转锥齿轮(34)反向转动。
  8. 根据权利要求1所述的泵站浮式对旋消涡装置，其特征在于，所述配重(6)的质量m满足下面条件：m≥0.3M，M为泵站浮式对旋消涡装置的总质量。
  9. 根据权利要求1所述的泵站浮式对旋消涡装置，其特征在于，所述泵站吸水端与配重(6)之间连接牵引索(7)；所述牵引索(7)与泵站吸水端的连接点位于液面(9)与吸水端进口处之间的中间位置；所述牵引索(7)的长度L满足下面条件：(T-t)≥L≥0.8(T-t)；
    式中，T-t为液面(9)与吸水端进口处之间的垂直距离。
  10. 一种泵站，其特征在于，至少包括2个权利要求1-9任一项所述的泵站浮式对旋消涡装置，第一泵站浮式对旋消涡装置位于泵站吸水端附近的液面一侧；第二泵站浮式对旋消涡装置位于泵站吸水端附近的液面另一侧；所述第一泵站浮式对旋消涡装置的驱动叶片(11)与第二泵站浮式对旋消涡装置的驱动叶片(11)的驱动方向相异；所述第一泵站浮式对旋消涡装置用于消除液面顺时针方向的漩涡；所述第二泵站浮式对旋消涡装置用于消除液面逆时针方向的漩涡。
PCT/CN2023/127804 2023-06-12 2023-10-30 一种泵站浮式对旋消涡装置及泵站 Ceased WO2024255071A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US18/700,711 US12385504B2 (en) 2023-06-12 2023-10-30 Floating counter-rotating vortex-eliminating device for pump station, and pump station
GB2405335.7A GB2633885A (en) 2023-10-30 2023-10-30 Floating counter-rotating vortex-eliminating device for pump station, and pump station

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202310689708.1 2023-06-12
CN202310689708.1A CN116575413B (zh) 2023-06-12 2023-06-12 一种泵站浮式对旋消涡装置及泵站

Publications (1)

Publication Number Publication Date
WO2024255071A1 true WO2024255071A1 (zh) 2024-12-19

Family

ID=87541447

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/127804 Ceased WO2024255071A1 (zh) 2023-06-12 2023-10-30 一种泵站浮式对旋消涡装置及泵站

Country Status (2)

Country Link
CN (1) CN116575413B (zh)
WO (1) WO2024255071A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12385504B2 (en) 2023-06-12 2025-08-12 Jiangsu University Floating counter-rotating vortex-eliminating device for pump station, and pump station
CN116575413B (zh) * 2023-06-12 2024-05-14 江苏大学 一种泵站浮式对旋消涡装置及泵站
GB2633885A (en) * 2023-10-30 2025-03-26 Univ Jiangsu Floating counter-rotating vortex-eliminating device for pump station, and pump station

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61153000A (ja) * 1984-12-25 1986-07-11 Takashi Kamemoto 渦防止装置
KR101506945B1 (ko) * 2014-05-12 2015-03-30 한국건설기술연구원 와류방지장치
JP2015158135A (ja) * 2014-02-21 2015-09-03 株式会社酉島製作所 ポンプ
CN205225878U (zh) * 2015-12-21 2016-05-11 扬州大学 开敞式进水池的水面消涡装置
CN106087904A (zh) * 2016-08-05 2016-11-09 浙江水利水电学院 水工建筑物出水口消涡装置
CN217539121U (zh) * 2022-04-29 2022-10-04 广东中烟工业有限责任公司 一种可调节的防涡旋装置
CN116575413A (zh) * 2023-06-12 2023-08-11 江苏大学 一种泵站浮式对旋消涡装置及泵站

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61153000A (ja) * 1984-12-25 1986-07-11 Takashi Kamemoto 渦防止装置
JP2015158135A (ja) * 2014-02-21 2015-09-03 株式会社酉島製作所 ポンプ
KR101506945B1 (ko) * 2014-05-12 2015-03-30 한국건설기술연구원 와류방지장치
CN205225878U (zh) * 2015-12-21 2016-05-11 扬州大学 开敞式进水池的水面消涡装置
CN106087904A (zh) * 2016-08-05 2016-11-09 浙江水利水电学院 水工建筑物出水口消涡装置
CN217539121U (zh) * 2022-04-29 2022-10-04 广东中烟工业有限责任公司 一种可调节的防涡旋装置
CN116575413A (zh) * 2023-06-12 2023-08-11 江苏大学 一种泵站浮式对旋消涡装置及泵站

Also Published As

Publication number Publication date
CN116575413A (zh) 2023-08-11
CN116575413B (zh) 2024-05-14

Similar Documents

Publication Publication Date Title
CN116575413B (zh) 一种泵站浮式对旋消涡装置及泵站
CN108368819A (zh) 引力涡流水轮机组件
US8475113B2 (en) Hydroelectric power device
KR101609821B1 (ko) 송수관 설치형 소수력 발전장치
CN106368905B (zh) 一种海洋风力发电装置
EP3735529A1 (en) Hydraulic turbine
CN211082362U (zh) 一种不锈钢多级离心泵
Kurokawa J-groove technique for suppressing various anomalous flow phenomena in turbomachines
WO2013069418A1 (ja) ピットバーレル型ポンプおよびその組込み方法
CN113368751B (zh) 一种t型潜水搅拌机
US3904714A (en) Low-speed mechanical aerator impeller
CA2971704C (en) Agitator having shrouded vanes for submersible pumps
GB2487448A (en) Hydro-kinetic Water Turbine Duct
WO2025000889A1 (zh) 风机基础、风力发电机组以及控制方法
US10029222B2 (en) Agitator having shrouded vanes for submersible pumps
US12385504B2 (en) Floating counter-rotating vortex-eliminating device for pump station, and pump station
CN211497582U (zh) 一种酵母液储液池搅拌器
CN202867307U (zh) 切割式自吸无堵塞排污泵
CN102384010B (zh) 固定安装式流水能量转换机
GB2633885A (en) Floating counter-rotating vortex-eliminating device for pump station, and pump station
KR20160025847A (ko) 수중 설치형 소수력 발전장치
KR20190060134A (ko) 자연풍을 이용한 녹조방지장치
CN108280279A (zh) 一种单管立式长轴多级泵用空间导叶的设计方法
CN2828029Y (zh) 环流式潜水曝气机
CN201991678U (zh) 水流发电装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 18700711

Country of ref document: US

ENP Entry into the national phase

Ref document number: 202405335

Country of ref document: GB

Kind code of ref document: A

Free format text: PCT FILING DATE = 20231030

WWE Wipo information: entry into national phase

Ref document number: 2405335.7

Country of ref document: GB

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23941295

Country of ref document: EP

Kind code of ref document: A1

WWP Wipo information: published in national office

Ref document number: 18700711

Country of ref document: US

WWG Wipo information: grant in national office

Ref document number: 18700711

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE