WO2019200681A1 - 一种单轴驱动的三级对旋轴流泵 - Google Patents

一种单轴驱动的三级对旋轴流泵 Download PDF

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Publication number
WO2019200681A1
WO2019200681A1 PCT/CN2018/091175 CN2018091175W WO2019200681A1 WO 2019200681 A1 WO2019200681 A1 WO 2019200681A1 CN 2018091175 W CN2018091175 W CN 2018091175W WO 2019200681 A1 WO2019200681 A1 WO 2019200681A1
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Prior art keywords
impeller hub
stage impeller
stage
bevel gear
transmission
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PCT/CN2018/091175
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English (en)
French (fr)
Inventor
李彦军
陈超
裴吉
王文杰
吴天澄
Original Assignee
江苏大学
江苏大学镇江流体工程装备技术研究院
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Application filed by 江苏大学, 江苏大学镇江流体工程装备技术研究院 filed Critical 江苏大学
Priority to US16/470,865 priority Critical patent/US11346357B2/en
Publication of WO2019200681A1 publication Critical patent/WO2019200681A1/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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/028—Units comprising pumps and their driving means the driving means being a planetary gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D3/00—Axial-flow pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • 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
    • F04D29/181—Axial flow rotors
    • 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
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps

Definitions

  • the invention relates to the structural design of an axial flow pump, and is suitable for the design field of a single-axis driven three-stage counter-rotating axial flow pump.
  • the multi-stage pump technology is mainly based on centrifugal pumps, and the multi-stage axial flow pump technology reports are few.
  • the traditional multi-stage axial flow pump technology turns the original rear stationary vane into a dynamic impeller, and realizes the second-level pair through double drive. Spin.
  • the invention realizes a three-stage counter-rotating axial flow pump on the basis of the traditional two-stage counter-rotating axial flow pump, and the first-stage impeller is equivalent to the induction wheel, which can greatly improve the lift head and anti-cavitation performance of the pump. , broaden the efficient area.
  • the invention patent ZL01109653.5 discloses a dual-drive axial flow pump, which broadens the high-efficiency range of the axial flow pump, but the structure adopts a two-stage double-drive structure design, which is not convenient in installation and use, and the inlet is easy to cause large hydraulic power. loss.
  • the present invention provides a three-stage counter-rotating axial flow pump to solve the problems of low axial head, narrow high-efficiency area and poor anti-cavitation performance of the existing axial flow pump technology.
  • a single-axis driven three-stage counter-rotating axial flow pump comprising a power source and a transmission shaft, wherein the transmission shaft is sequentially arranged from a pump inlet to a pump outlet.
  • the utility model has an imported fixed guide vane, a first stage impeller, a second stage impeller, a third stage impeller and an outlet fixed vane, wherein the inlet fixed vane is mounted on the inlet fixed guide impeller hub, and the first stage impeller is installed in the first stage On the first stage impeller hub, the second stage impeller is mounted on the second stage impeller hub, the third stage impeller is mounted on the third stage impeller hub, and the outlet fixed vane is mounted on the outlet fixed guide impeller hub a hollow cavity shape in which the inlet fixed guide impeller hub and the first stage impeller hub are in communication, and the outlet fixed guide impeller hub and the third-stage impeller hub are connected in a cavity shape, the first a second impeller hub is connected to the transmission shaft, and the transmission shaft is connected with a first transmission bevel gear and a second transmission bevel gear, the first transmission bevel gear is located at the inlet fixed guide impeller hub and the First stage impeller In the cavity inside the hub, the second transmission bevel gear is located in a cavity
  • the shaft end of the transmission shaft in the inner cavity of the inlet fixed guide impeller hub and the first stage impeller hub and the inlet fixed guide impeller hub are radially fixed by the first deep groove ball bearing,
  • the first thrust bearing is axially fixed; the first drive bevel gear and the first thrust bearing are axially fixed by the first sleeve.
  • the first bevel gear transmission includes a first carrier fixed to the inner wall of the inlet fixed guide impeller hub or the first stage impeller hub, the first gear a third transmission bevel gear is mounted on the frame, the third transmission bevel gear meshes with the first transmission bevel gear and the first hollow transmission bevel gear, and the first hollow transmission bevel gear is fixedly mounted on the first stage impeller
  • the inner wall boss of the hub drives the first stage impeller hub to rotate.
  • the first stage impeller hub is provided with a first support ring and a second support ring, and the second support ring and the first hollow drive bevel gear are fixed together by the first fastening bolt
  • the second support ring and the transmission shaft are radially fixed by a third deep groove ball bearing
  • the first support ring is fixed by the second fastening bolt
  • the inner wall boss of the first stage impeller hub is radially fixed between the first support ring and the transmission shaft by a second deep groove ball bearing, the third deep groove ball bearing and the first The two deep groove ball bearings are axially positioned by the second sleeve.
  • a second thrust bearing is disposed between the first support ring and the inner wall boss of the second stage impeller hub.
  • the second bevel gear transmission includes a second carrier fixed to the inner wall of the third stage impeller hub or the outlet fixed guide impeller hub, the second gear A fourth transmission bevel gear is mounted on the frame, the fourth transmission bevel gear is simultaneously meshed with the second transmission bevel gear and the second hollow transmission bevel gear, and the second hollow transmission bevel gear is fixedly mounted on the third stage impeller
  • the boss of the inner wall of the hub drives the third stage impeller hub to rotate.
  • the third stage impeller hub is provided with a third support ring and a fourth support ring, and the third support ring and the second hollow drive bevel gear are fixed together by the third fastening bolt.
  • the third support ring and the transmission shaft are radially fixed by a fourth deep groove ball bearing, and the fourth support ring is fixed by the fourth fastening bolt.
  • the inner wall boss of the third stage impeller hub is radially fixed between the fourth support ring and the transmission shaft by a fifth deep groove ball bearing, the fifth deep groove ball bearing and the first
  • the four deep groove ball bearings are axially positioned by a third sleeve.
  • the fourth support ring is provided with a third thrust bearing between the inner wall bosses of the second stage impeller hub.
  • the first stage impeller is mounted on the first stage impeller hub by a first adjustment nut
  • the second stage impeller is mounted on the second stage impeller hub by a third adjustment nut
  • the third stage impeller is mounted on the third stage impeller hub by a second adjustment nut.
  • the inlet fixed guide impeller hub, the first stage impeller hub, the second stage impeller hub, the third stage impeller hub and the outlet fixed guide impeller hub are sealed by a sealing ring .
  • the invention has the following advantages: 1.
  • the invention installs the transmission component in the hollow hub of the fixed vane and the impeller, fully utilizes the space, has compact structure and small hydraulic loss, and the gap between the impellers of each stage is small, and the axial dimension is small. 2.
  • the invention can change the direction of rotation of the impellers of each stage by providing power through one motor, and at the same time pass the gears of the first transmission bevel gear and the first bevel gear transmission, the second transmission bevel gear and the second bevel gear transmission.
  • the adjustment of the transmission ratio is to broaden the high-efficiency zone of the pump operation, increase the inlet pressure of the main impeller, greatly improve the cavitation performance of the pump, and improve the lift of the axial flow pump; improve the operating efficiency of the pump by reducing the impact loss of the impeller .
  • Figure 1 is a schematic view of the operation of the apparatus of the present invention.
  • Figure 2 is a schematic view showing the internal structure of the apparatus of the present invention.
  • first support ring 31. Second deep groove ball bearing, 32. second sleeve, 33. first stage impeller hub, 34. second fastening bolt, 35. first adjustment nut, 36. second support ring, 37. third deep groove Ball bearing, 38. first hollow drive bevel gear, 39. third drive bevel gear, 40. first fastening bolt, 41. first transmission bevel gear, 42. first carrier, 44. first sleeve, 45.
  • a single-axis driven three-stage counter-rotating axial flow pump of the present invention comprises a power source 1, a pump outlet 2, a drive shaft 3, an outlet fixed vane 4, a third-stage impeller 5, and a second stage.
  • the liquid flows in from the pump inlet 9 and flows through the inlet fixed vane 8 through the first stage impeller 7 to flow into the second stage impeller 6; after the second stage impeller 6 works, it flows into the third stage impeller 5, through the third stage impeller 5
  • the pump outlet 2 flows out.
  • the inlet fixed guide vane 8 is mounted on the inlet fixed guide impeller hub 47, and the first-stage impeller 7 passes through the first adjusting nut 35.
  • the second stage impeller 6 is mounted on the second stage impeller hub 28 by a third adjustment nut 27, and the third stage impeller 5 is mounted to the third stage impeller by a second adjustment nut 19.
  • the outlet fixed vanes 4 are mounted on the outlet fixed guide impeller hub 11, and the drive shaft 3 sequentially passes through the outlet fixed guide impeller hub 11, the third stage impeller hub 21, the second stage impeller hub 28 and the first stage.
  • the impeller hub 33, the second stage impeller hub 28 is keyed to the drive shaft 3, and the drive shaft 3 is connected with a first transmission bevel gear 41 and a second transmission bevel gear 10, and the first transmission bevel gear 41 is located at the inlet fixed guide impeller hub. 47.
  • the second transmission bevel gear 10 is located in a cavity inside the outlet fixed guide impeller hub 11 and the third stage impeller hub 21, and the transmission shaft 3 is located at the inlet fixed guide impeller hub 47.
  • the inner end passes through the first deep groove ball bearing 46 and Thrust bearing 45 is fixed radially and axially fixed guide inlet 47 of the impeller hub, and the other end is connected to the power source of the pump 1 in vitro.
  • the inlet fixed vane 8 is fixed near the inlet, and the outlet fixed vane 4 is fixed near the outlet.
  • the inlet fixed guide impeller hub 47 has a bearing frame therein for receiving a first thrust bearing 45 and a first deep groove ball bearing 46 for axially fixing and radially fixing the drive shaft 3.
  • the first carrier 42 is fixed to the inner wall of the inlet fixed guide impeller hub 47 or the first stage impeller hub 33 by fastening bolts.
  • the first transmission bevel gear 41 is connected by a key on one end of the transmission shaft 3 near the inlet, this The first transmission bevel gear 41 is steered in the same manner as the transmission shaft 3 and transmits power to the third transmission bevel gear 39 connected to the carrier 42 via a sliding bearing;
  • the first stage impeller hub 33 is provided with a first support ring 30 and a first
  • the second support ring 36, the second support ring 36 and the first hollow drive bevel gear 38 are fixed together on the inner wall boss of the first stage impeller hub 33 by the first fastening bolt 40, and the second support ring 36 and the drive shaft 3
  • Radially fixed by a third deep groove ball bearing 37 Radially fixed by a third deep groove ball bearing 37, the first support ring 30 is fixed to the inner wall boss of the first stage impeller hub 33 by a second fastening bolt 34, the first support ring 30 and the The transmission shafts 3 are radially fixed by the second deep groove ball bearings 31, and the third deep groove ball bearings 37 and the second deep groove ball
  • the boss of the first stage impeller hub 33 near the outlet and the first support ring 30 form a card slot, and a second thrust bearing 29 is mounted in the card slot for axial fixing with the second stage impeller hub 28, thereby making the first
  • the stage impeller 7 and the second stage impeller 6 are axially fixed by the second thrust bearing 29;
  • the transmission bevel gear 39 on the carrier 42 transmits power to the hollow drive bevel gear 38, thereby driving the first stage impeller 7 to rotate.
  • the direction of rotation is opposite to the direction of rotation of the drive shaft 3;
  • the drive shaft 3 and the second stage impeller hub 28 are connected by a key to drive the second stage impeller 6 to rotate.
  • the steering of the second stage impeller 6 is the same as that of the transmission shaft 3.
  • the transmission shaft 3 is connected to the second transmission bevel gear 10 by a key on the side close to the outlet fixing vane 4.
  • This second transmission bevel gear 10 is steered in the same manner as the transmission shaft 3, and transmits power to the second carrier 13 through the sliding bearing.
  • the fourth transmission bevel gear 12, the second carrier 13 is fixed to the inner wall of the outlet fixed guide impeller hub 11 or the third-stage impeller hub 21 by bolts; the fourth hollow transmission bevel gear 12 is passed through the third fastening bolt 18
  • the third support ring 16, the inner wall boss of the third stage impeller hub 21 are connected together, and the fourth drive bevel gear 12 mounted on the second carrier 13 transmits power to the second hollow drive bevel gear 14, thereby driving the third
  • the stage impeller 5 rotates, the third stage impeller 5 is turned in the opposite direction to the propeller shaft 3 and the first stage impeller 7 is the same; the fourth support ring 22 in the third stage impeller hub 21 near the inlet is fixed in the third by the fourth fastening bolt 25 On the inner wall boss
  • the ball bearing 17 is radially fixed;
  • the fifth deep groove ball bearing 23 and the fourth deep groove ball bearing 17 are axially fixed by the third sleeve 20; the other side of the fourth support ring 22 is mounted with the third thrust bearing 24 to realize the second stage impeller hub 28
  • the first stage impeller 7 is mounted on the first stage impeller hub 33 by a first adjustment nut 35
  • the second stage impeller 6 is mounted on the second stage impeller hub 28 by a third adjustment nut 27,
  • the impeller 5 is mounted on the third stage impeller hub 21 by a second adjusting nut 19, which can be realized by adjusting the first adjusting nut 35, the second adjusting nut 19 and the third adjusting nut 27 to the first stage impeller 7, the third
  • the stage impeller 5 and the second stage impeller 6 are placed at an angle.
  • the inlet fixed guide impeller hub 47, the first stage impeller hub 33, the second stage impeller hub 28, the third stage impeller hub 21 and the outlet fixed guide impeller hub 11 are sealed
  • the number of the third transmission bevel gears 39 is 3-6; the number of the inner wall bosses of the first stage impeller hub 33 is 3-6, correspondingly the first hollow transmission bevel gear 38 and the second support ring
  • the number of threaded holes of 36 is 3-6; the number of fourth transmission bevel gears 12 is 3-6; the number of bosses of the inner wall of the third stage impeller hub 21 is 3-6, correspondingly the second hollow transmission
  • the number of the threaded holes of the bevel gear 14 and the support ring 16 is 3 to 6.
  • the invention can change the rotation direction of the impellers of each stage by providing power by one motor, and at the same time, the gear ratio of the first transmission bevel gear and the first bevel gear transmission, the second transmission bevel gear and the second bevel gear transmission.

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

Abstract

一种单轴驱动的三级对旋轴流泵，包括：动力源（1）、泵出口（2）、传动轴（3）、出口固定导叶（4）、第三级叶轮（5）、第二级叶轮（6）、第一级叶轮（7）、进口固定导叶（8）、泵进口（9）、第一传动锥齿轮（41）、第一锥齿轮传动装置、第二传动锥齿轮（10）和第二锥齿轮传动装置。

Description

一种单轴驱动的三级对旋轴流泵 技术领域
本发明涉及轴流泵的结构设计，适用于一种单轴驱动的三级对旋轴流泵的设计领域。
背景技术
目前多级泵技术主要以离心泵为主，多级轴流泵技术报道较少，传统的多级轴流泵技术是将原本的后置静叶变为动叶轮，通过双驱动实现二级对旋。本发明在传统二级对旋轴流泵的基础上，通过内置齿轮传动，实现了三级对旋轴流泵，第一级叶轮相当于诱导轮，可以大大提高泵的扬程和抗空化性能，拓宽高效区。发明专利ZL01109653.5公开了一种双驱动轴流泵，拓宽了轴流泵的高效范围，但该结构采用两段双驱动结构设计，在安装使用上不够方便，同时进口容易造成较大的水力损失。
经检索，关于三级对旋轴流泵技术没有相关报道。
发明内容
为了实现单轴驱动的三级对旋轴流泵，本发明提供一种三级对旋轴流泵，以解决现有轴流泵技术扬程低、高效区窄、抗空化性能差等问题。
为实现上述发明目的，本发明采取的技术方案为：一种单轴驱动的三级对旋轴流泵，包括动力源和传动轴，所述传动轴从泵进口到泵出口的方向上依次设有进口固定导叶、第一级叶轮、第二级叶轮、第三级叶轮和出口固定导叶，所述进口固定导叶安装在进口固定导叶轮毂上，所述第一级叶轮安装在第一级叶轮轮毂上，所述第二级叶轮安装在第二级叶轮轮毂上，所述第三级叶轮安装在第三级叶轮轮毂上，所述出口固定导叶安装在出口固定导叶轮 毂上，所述进口固定导叶轮毂和所述第一级叶轮轮毂内部呈连通的空腔状，所述出口固定导叶轮毂和所述第三级叶轮轮毂内部呈连通的空腔状，所述第二级叶轮轮毂与所述传动轴键连接，所述传动轴上键连接有第一传动锥齿轮和第二传动锥齿轮，所述第一传动锥齿轮位于所述进口固定导叶轮毂和所述第一级叶轮轮毂内部的空腔里，所述第二传动锥齿轮位于出口固定导叶轮毂和所述第三级叶轮轮毂内部的空腔里，所述第一传动锥齿轮通过与所述进口固定导叶轮毂和所述第一级叶轮轮毂内部空腔里的第一锥齿轮传动装置啮合来带动所述第一级叶轮轮毂沿与所述传动轴转动方向相反的方向转动，所述第二传动锥齿轮通过与所述出口固定导叶轮毂和所述第三级叶轮轮毂内部空腔里第二锥齿轮传动装置啮合来带动所述第三级叶轮轮毂沿与所述传动轴转动方向相反的方向转动。
上述方案中，所述传动轴位于所述进口固定导叶轮毂和所述第一级叶轮轮毂内部空腔里的轴端与进口固定导叶轮毂通过第一深沟球轴承进行径向固定，通过第一止推轴承进行轴向固定；所述第一传动锥齿轮与所述第一止推轴承之间通过第一套筒进行轴向固定。
上述方案中，所述第一锥齿轮传动装置包括第一齿轮架，所述第一齿轮架固定在所述进口固定导叶轮毂或所述第一级叶轮轮毂的内壁上，所述第一齿轮架上安装有第三传动锥齿轮，所述第三传动锥齿轮同时与第一传动锥齿轮和第一空心传动锥齿轮啮合，所述第一空心传动锥齿轮固定安装在所述第一级叶轮轮毂的内壁凸台上，带动所述第一级叶轮轮毂转动。
上述方案中，所述第一级叶轮轮毂内设有第一支撑环和第二支撑环，所述第二支撑环和所述第一空心传动锥齿轮通过第一紧固螺栓一起固定在所 述第一级叶轮轮毂的内壁凸台上，所述第二支撑环与所述传动轴之间通过第三深沟球轴承进行径向固定，所述第一支撑环通过第二紧固螺栓固定在所述第一级叶轮轮毂的内壁凸台上，所述第一支撑环与所述传动轴之间通过第二深沟球轴承进行径向固定，所述第三深沟球轴承和所述第二深沟球轴承之间通过第二套筒进行轴向定位。
上述方案中，所述第一支撑环与所述第二级叶轮轮毂的内壁凸台之间安放有第二止推轴承。
上述方案中，所述第二锥齿轮传动装置包括第二齿轮架，所述第二齿轮架固定在所述第三级叶轮轮毂或所述出口固定导叶轮毂的内壁上，所述第二齿轮架上安装有第四传动锥齿轮，所述第四传动锥齿轮同时与第二传动锥齿轮和第二空心传动锥齿轮啮合，所述第二空心传动锥齿轮固定安装在所述第三级叶轮轮毂内壁凸台上，带动所述第三级叶轮轮毂转动。
上述方案中，所述第三级叶轮轮毂内设有第三支撑环和第四支撑环，所述第三支撑环和所述第二空心传动锥齿轮通过第三紧固螺栓一起固定在所述第三级叶轮轮毂的内壁凸台上，所述第三支撑环与所述传动轴之间通过第四深沟球轴承进行径向固定，所述第四支撑环通过第四紧固螺栓固定在所述第三级叶轮轮毂的内壁凸台上，所述第四支撑环与所述传动轴之间通过第五深沟球轴承进行径向固定，所述第五深沟球轴承和所述第四深沟球轴承之间通过第三套筒进行轴向定位。
上述方案中，所述第四支撑环所述第二级叶轮轮毂的内壁凸台之间安放有第三止推轴承。
上述方案中，所述第一级叶轮通过第一调节螺母安装在所述第一级叶轮 轮毂上，所述第二级叶轮通过第三调节螺母安装在所述第二级叶轮轮毂上，所述第三级叶轮通过第二调节螺母安装在所述第三级叶轮轮毂上。
上述方案中，所述进口固定导叶轮毂、所述第一级叶轮轮毂、所述第二级叶轮轮毂、所述第三级叶轮轮毂和所述出口固定导叶轮毂之间通过密封圈进行密封。
本发明的有益效果：1.本发明将传动零件安装在固定导叶和叶轮的空心轮毂内，充分利用空间，结构紧凑、水力损失小，各级叶轮间的间隙小，轴向尺寸小。2.本发明通过一台电机提供动力即能改变各级叶轮的旋转方向，同时通过对第一传动锥齿轮与第一锥齿轮传动装置、第二传动锥齿轮与第二锥齿轮传动装置中齿轮传动比的调节来拓宽泵运行的高效区，提高主叶轮的进口压力，大大改善了泵的空化性能，提高了轴流泵的扬程；通过减小叶轮的冲击损失，提高了泵的运行效率。
附图说明
图1为本发明装置的工作示意图。
图2为本发明装置的内部结构示意图。
图中：1.动力源、2.泵出口、3.传动轴、4.出口固定导叶、5.第三级叶轮、6.第二级叶轮、7.第一级叶轮、8.进口固定导叶、9.泵进口。10.第二传动锥齿轮、11.出口固定导叶轮毂、12.第四传动锥齿轮、13.第二齿轮架、14.第二空心传动锥齿轮、16.第三支撑环、17.第四深沟球轴承、18.第三紧固螺栓、19.第二调节螺母、20.第三套筒、21.第三级叶轮轮毂、22.第四支撑环、23.第五深沟球轴承、24.第三止推轴承、25.第四紧固螺栓、27.第三调节螺母、28.第二级叶轮轮毂、29.第二止推轴承、30.第一支撑环、31.第 二深沟球轴承、32.第二套筒、33.第一级叶轮轮毂、34.第二紧固螺栓、35.第一调节螺母、36.第二支撑环、37.第三深沟球轴承、38.第一空心传动锥齿轮、39.第三传动锥齿轮、40.第一紧固螺栓、41.第一传动锥齿轮、42.第一齿轮架、44.第一套筒、45.第一止推轴承、46.第一深沟球轴承、47.进口固定导叶轮毂、48.密封圈。
具体实施方式
下面结合附图，对本发明的技术方案做进一步说明。
如图1所示，本发明的一种单轴驱动的三级对旋轴流泵包括动力源1、泵出口2、传动轴3、出口固定导叶4、第三级叶轮5、第二级叶轮6、第一级叶轮7、进口固定导叶8和泵进口9。液体从泵进口9流入，流经进口固定导叶8经第一级叶轮7做功后，流入第二级叶轮6；经第二级叶轮6做功后流入第三级叶轮5，经第三级叶轮5做工后流经出口固定导叶4后，由泵出口2流出。
如图2所示，本实施例提供的单轴驱动的三级对旋轴流泵中，进口固定导叶8安装在进口固定导叶轮毂47上，第一级叶轮7通过第一调节螺母35安装在第一级叶轮轮毂33上，所述第二级叶轮6通过第三调节螺母27安装在第二级叶轮轮毂28上，第三级叶轮5通过第二调节螺母19安装在第三级叶轮轮毂21上，出口固定导叶4安装在出口固定导叶轮毂11上，传动轴3依次同时穿过出口固定导叶轮毂11、第三级叶轮轮毂21、第二级叶轮轮毂28和第一级叶轮轮毂33，第二级叶轮轮毂28与传动轴3键连接，传动轴3上键连接有第一传动锥齿轮41和第二传动锥齿轮10，第一传动锥齿轮41位于进口固定导叶轮毂47和第一级叶轮轮毂33内部的空腔里，第二传动锥 齿轮10位于出口固定导叶轮毂11和第三级叶轮轮毂21内部的空腔里，传动轴3位于进口固定导叶轮毂47内的末端通过第一深沟球轴承46和第一止推轴承45径向和轴向固定在进口固定导叶轮毂47内，另一端连接在泵体外的动力源1上。进口固定导叶8固定在靠近进口处，出口固定导叶4固定在靠近出口处。进口固定导叶轮毂47内有轴承架，以安放用来对传动轴3进行轴向固定和径向固定的第一止推轴承45和第一深沟球轴承46。第一齿轮架42通过紧固螺栓固定在进口固定导叶轮毂47或第一级叶轮轮毂33的内壁上，由于在传动轴3靠近进口的一端上通过键连接有第一传动锥齿轮41，这个第一传动锥齿轮41转向与传动轴3相同并把动力传递给通过滑动轴承连接在齿轮架42上的第三传动锥齿轮39；第一级叶轮轮毂33内设有第一支撑环30和第二支撑环36，第二支撑环36和第一空心传动锥齿轮38通过第一紧固螺栓40一起固定在第一级叶轮轮毂33的内壁凸台上，第二支撑环36与传动轴3之间通过第三深沟球轴承37进行径向固定，第一支撑环30通过第二紧固螺栓34固定在所述第一级叶轮轮毂33的内壁凸台上，第一支撑环30与所述传动轴3之间通过第二深沟球轴承31进行径向固定，所述第三深沟球轴承37和所述第二深沟球轴承31之间通过第二套筒32进行轴向定位。第一级叶轮轮毂33内靠近出口的凸台和第一支撑环30形成一个卡槽，卡槽内安装一个第二止推轴承29与第二级叶轮轮毂28进行轴向固定，从而使第一级叶轮7和第二级叶轮6之间通过第二止推轴承29进行轴向固定；齿轮架42上的传动锥齿轮39把动力传递给空心传动锥齿轮38，从而带动第一级叶轮7旋转，且旋转方向与传动轴3的旋转方向相反；传动轴3与第二级叶轮轮毂28通过键连接，带动第二级叶轮6旋转。第二级叶轮6的转向与传 动轴3相同。
传动轴3在靠近出口固定导叶4一侧通过键连接第二传动锥齿轮10，这个第二传动锥齿轮10转向与传动轴3相同，把动力传递给通过滑动轴承安装在第二齿轮架13上的第四传动锥齿轮12，第二齿轮架13通过螺栓固定在出口固定导叶轮毂11或第三级叶轮轮毂21的内壁上；第四空心传动锥齿轮12通过第三紧固螺栓18与第三支撑环16、第三级叶轮轮毂21内壁凸台连接在一起，安装在第二齿轮架13上的第四传动锥齿轮12把动力传递给第二空心传动锥齿轮14，从而带动第三级叶轮5旋转，第三级叶轮5转向与传动轴3相反和第一级叶轮7相同；第三级叶轮轮毂21内靠近进口的第四支撑环22通过第四紧固螺栓25固定在第三级叶轮轮毂21内壁凸台上，这个第四支撑环22与传动轴3通过第五深沟球轴承23对叶轮进行径向固定，第三支撑环16与传动轴3之间通过第四深沟球轴承17进行径向固定；第五深沟球轴承23与第四深沟球轴承17通过第三套筒20进行轴向固定；第四支撑环22的另一侧安装第三止推轴承24，实现与第二级叶轮轮毂28的轴向定位，第一级叶轮7通过第一调节螺母35安装在第一级叶轮轮毂33上，第二级叶轮6通过第三调节螺母27安装在第二级叶轮轮毂28上，第三级叶轮5通过第二调节螺母19安装在第三级叶轮轮毂21上，均可通过调节第一调节螺母35、第二调节螺母19和第三调节螺母27来实现对第一级叶轮7、第三级叶轮5和的第二级叶轮6安放角度。进口固定导叶轮毂47、第一级叶轮轮毂33、第二级叶轮轮毂28、第三级叶轮轮毂21和出口固定导叶轮毂11之间通过密封圈48进行密封。
优选的，第三传动锥齿轮39的个数为3～6个；第一级叶轮轮毂33内壁 凸台的个数为3～6个，相应地第一空心传动锥齿轮38与第二支撑环36的螺纹孔的数目为3～6个；第四传动锥齿轮12的个数为3～6个；第三级叶轮轮毂21内壁凸台个数为3～6个，相应地第二空心传动锥齿轮14第三与支撑环16的螺纹孔的数目为3～6个。
本发明通过一台电机提供动力即能改变各级叶轮的旋转方向，同时通过对第一传动锥齿轮与第一锥齿轮传动装置、第二传动锥齿轮与第二锥齿轮传动装置中齿轮传动比的调节来拓宽泵运行的高效区，提高主叶轮的进口压力，大大改善了泵的空化性能，提高了轴流泵的扬程；通过减小叶轮的冲击损失，提高了泵的运行效率。

Claims (10)

  1. 一种单轴驱动的三级对旋轴流泵，包括动力源(1)和传动轴(3)，其特征在于，所述传动轴(3)从泵进口(9)到泵出口(2)的方向上依次设有进口固定导叶(8)、第一级叶轮(7)、第二级叶轮(6)、第三级叶轮(5)和出口固定导叶(4)，所述进口固定导叶(8)安装在进口固定导叶轮毂(47)上，所述第一级叶轮(7)安装在第一级叶轮轮毂(33)上，所述第二级叶轮(6)安装在第二级叶轮轮毂(28)上，所述第三级叶轮(5)安装在第三级叶轮轮毂(21)上，所述出口固定导叶(4)安装在出口固定导叶轮毂(11)上，所述进口固定导叶轮毂(47)和所述第一级叶轮轮毂(33)内部呈连通的空腔状，所述出口固定导叶轮毂(11)和所述第三级叶轮轮毂(21)内部呈连通的空腔状，所述第二级叶轮轮毂(28)与所述传动轴(3)键连接，所述传动轴(3)上键连接有第一传动锥齿轮(41)和第二传动锥齿轮(10)，所述第一传动锥齿轮(41)位于所述进口固定导叶轮毂(47)和所述第一级叶轮轮毂(33)内部的空腔里，所述第二传动锥齿轮(10)位于出口固定导叶轮毂(11)和所述第三级叶轮轮毂(21)内部的空腔里，所述第一传动锥齿轮(41)通过与所述进口固定导叶轮毂(47)和所述第一级叶轮轮毂(33)内部空腔里的第一锥齿轮传动装置啮合来带动所述第一级叶轮轮毂(33)沿与所述传动轴(3)转动方向相反的方向转动，所述第二传动锥齿轮(10)通过与所述出口固定导叶轮毂(11)和所述第三级叶轮轮毂(21)内部空腔里第二锥齿轮传动装置啮合来带动所述第三级叶轮轮毂(21)沿与所述传动轴(3)转动方向相反的方向转动。
  2. 根据权利要求1所述的一种单轴驱动的三级对旋轴流泵，其特征在于，所述传动轴(3)位于所述进口固定导叶轮毂(47)和所述第一级叶轮轮毂(33)内部空腔里的轴端与进口固定导叶轮毂(47)通过第一深沟球轴承(46)进行径向固定，通过第一止推轴承(45)进行轴向固定；所述第一传动锥齿轮(41)与所述第一止推轴承(45)之间通过第一套筒(44)进行轴 向固定。
  3. 根据权利要求1或2所述的一种单轴驱动的三级对旋轴流泵，其特征在于，所述第一锥齿轮传动装置包括第一齿轮架(42)，所述第一齿轮架(42)固定在所述进口固定导叶轮毂(47)或所述第一级叶轮轮毂(33)的内壁上，所述第一齿轮架(42)上安装有第三传动锥齿轮(39)，所述第三传动锥齿轮(39)同时与第一传动锥齿轮(41)和第一空心传动锥齿轮(38)啮合，所述第一空心传动锥齿轮(38)固定安装在所述第一级叶轮轮毂(33)的内壁凸台上，带动所述第一级叶轮轮毂(33)转动。
  4. 根据权利要求3所述的一种单轴驱动的三级对旋轴流泵，其特征在于，所述第一级叶轮轮毂(33)内设有第一支撑环(30)和第二支撑环(36)，所述第二支撑环(36)和所述第一空心传动锥齿轮(38)通过第一紧固螺栓(40)一起固定在所述第一级叶轮轮毂(33)的内壁凸台上，所述第二支撑环(36)与所述传动轴(3)之间通过第三深沟球轴承(37)进行径向固定，所述第一支撑环(30)通过第二紧固螺栓(34)固定在所述第一级叶轮轮毂(33)的内壁凸台上，所述第一支撑环(30)与所述传动轴(3)之间通过第二深沟球轴承(31)进行径向固定，所述第三深沟球轴承(37)和所述第二深沟球轴承(31)之间通过第二套筒(32)进行轴向定位。
  5. 根据权利要求3所述的一种单轴驱动的三级对旋轴流泵，其特征在于，所述第一支撑环(30)与所述第二级叶轮轮毂(28)的内壁凸台之间安放有第二止推轴承(29)。
  6. 根据权利要求1或2所述的一种单轴驱动的三级对旋轴流泵，其特征在于，所述第二锥齿轮传动装置包括第二齿轮架(13)，所述第二齿轮架(13)固定在所述第三级叶轮轮毂(21)或所述出口固定导叶轮毂(11)的内壁上，所述第二齿轮架(13)上安装有第四传动锥齿轮(12)，所述第四传动锥齿轮(12)同时与第二传动锥齿轮(10)和第二空心传动锥齿轮(14)啮合，所述第二空心传动锥齿轮(14)固定安装在所述第三级叶轮轮毂 (21)内壁凸台上，带动所述第三级叶轮轮毂(21)转动。
  7. 根据权利要求6所述的一种单轴驱动的三级对旋轴流泵，其特征在于，所述第三级叶轮轮毂(21)内设有第三支撑环(16)和第四支撑环(22)，所述第三支撑环(16)和所述第二空心传动锥齿轮(14)通过第三紧固螺栓(18)一起固定在所述第三级叶轮轮毂(21)的内壁凸台上，所述第三支撑环(16)与所述传动轴(3)之间通过第四深沟球轴承(17)进行径向固定，所述第四支撑环(22)通过第四紧固螺栓(25)固定在所述第三级叶轮轮毂(21)的内壁凸台上，所述第四支撑环(22)与所述传动轴(3)之间通过第五深沟球轴承(23)进行径向固定，所述第五深沟球轴承(23)和所述第四深沟球轴承(17)之间通过第三套筒(20)进行轴向定位。
  8. 根据权利要求6所述的一种单轴驱动的三级对旋轴流泵，其特征在于，所述第四支撑环(22)所述第二级叶轮轮毂(28)的内壁凸台之间安放有第三止推轴承(24)。
  9. 根据权利要求1或2所述的一种单轴驱动的三级对旋轴流泵，其特征在于，所述第一级叶轮(7)通过第一调节螺母(35)安装在所述第一级叶轮轮毂(33)上，所述第二级叶轮(6)通过第三调节螺母(27)安装在所述第二级叶轮轮毂(28)上，所述第三级叶轮(5)通过第二调节螺母(19)安装在所述第三级叶轮轮毂(21)上。
  10. 根据权利要求1或2所述的一种单轴驱动的三级对旋轴流泵，其特征在于，所述进口固定导叶轮毂(47)、所述第一级叶轮轮毂(33)、所述第二级叶轮轮毂(28)、所述第三级叶轮轮毂(21)和所述出口固定导叶轮毂(11)之间通过密封圈(48)进行密封。
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CN112682315A (zh) * 2020-12-17 2021-04-20 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） 一种双向轴流泵
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