WO2023004836A1 - 一种用于齿轮箱强化传热的周向螺旋水槽冷却装置 - Google Patents

一种用于齿轮箱强化传热的周向螺旋水槽冷却装置 Download PDF

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WO2023004836A1
WO2023004836A1 PCT/CN2021/110007 CN2021110007W WO2023004836A1 WO 2023004836 A1 WO2023004836 A1 WO 2023004836A1 CN 2021110007 W CN2021110007 W CN 2021110007W WO 2023004836 A1 WO2023004836 A1 WO 2023004836A1
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Prior art keywords
water tank
spoiler
water
cooling device
shell
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PCT/CN2021/110007
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English (en)
French (fr)
Inventor
楼佩煌
戴立新
钱晓明
钱瑞
宋凯
宋允辉
马润
马剑军
张颖
Original Assignee
南京航空航天大学
上海振华重工集团(南通)传动机械有限公司
南京航空航天大学苏州研究院
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Publication of WO2023004836A1 publication Critical patent/WO2023004836A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine

Definitions

  • the invention relates to the field of gear box cooling, in particular to a circumferential spiral water tank cooling device for gear box heat dissipation.
  • Gear transmission is now widely used in all walks of life. Taking the gearbox in the shield machine as the research object, a lot of heat is generated due to friction losses such as gear meshing friction, sliding bearing friction, and gear oil churning during operation.
  • the heat production of the transmission device not only affects the lubrication and cooling of the system, but also has a great impact on the normal operation of key structural components, directly affecting the transmission effect and the dynamic performance of the transmission system.
  • the gear box relies on the circumferential spiral water tank structure to dissipate heat, and the cooling water flows through the spiral water tank to take out the heat.
  • a circumferential spiral water tank cooling device for enhanced heat transfer of the gearbox is designed to solve the above problems.
  • the invention proposes a circumferential spiral water tank cooling device for enhancing heat transfer of a gear box, and aims to solve the problem of uneven heat dissipation in the gear box locally.
  • a circumferential spiral water tank cooling device for enhanced heat transfer of a gearbox including a cylindrical shell, and a water inlet and a water outlet are opened on the surface of the shell , the inside of the outer shell is provided with a gear box inner shell, the outer surface of the gear box inner shell is attached to the inner surface of the outer shell, and the outer surface of the gear box inner shell is provided with a
  • the spiral fins in the direction of shell extension, the space between adjacent fins is a water tank, and the water tank communicates with the water inlet and the water outlet; the end of the gearbox inner shell near the water outlet
  • a bearing installation sleeve is provided, and the bearing installation sleeve extends to the inside of the inner shell of the gear box, and there is a gap between the inner surface of the inner shell of the gear box; in the water tank on the side close to the water outlet
  • a spoiler structure is provided.
  • a turbulence structure is installed in the second half of the tank to increase the disturbance of the cooling water to make the temperature of the cooling water fully uniform and improve the heat exchange efficiency of the second half.
  • the total length occupied by the spoiler structure is less than half of the total length of the water tank.
  • the spoiler structure is a spoiler fin
  • the spoiler fin is a vertical fin
  • the spoiler fin is arranged along the extending direction of the water tank, and the in the middle of the sink.
  • the height of the spoiler fins is smaller than the depth of the water tank.
  • the spoiler structure is a plurality of spoiler columns, the spoiler columns are arranged at intervals along the extending direction of the water tank, and are arranged in the middle of the water tank.
  • the diameter of the spoiler column is smaller than the width of the water tank, and the height of the spoiler column is smaller than the depth of the water tank.
  • the spoiler structure is a plurality of U-shaped spoilers, and the multiple U-shaped spoilers are evenly distributed in the water tank, and one end of the spoiler is connected to The side walls of the water tank are connected, and the width of the spoiler is smaller than the width of the water tank; the orientation of the opening of the spoiler is opposite to the direction of water flow.
  • the fins are interrupted at intervals to allow adjacent water tanks to communicate. In this way, the number of local water tanks is reduced, the cooling water path is shortened, and the resistance along the cooling water is reduced.
  • the interrupted length is less than half of the inner perimeter of the housing.
  • a heat pipe is wound on the outer surface of the bearing installation sleeve, and the heat pipe communicates with the water tank. Due to the poor local heat dissipation at the bearing mounting sleeve, a heat pipe is wrapped around the bearing mounting sleeve at last, and the heat pipe is connected to the water tank. The cooling water flows through the heat pipe to directly take away the local heat at the bearing mounting sleeve to avoid excessive local temperature.
  • the present invention has the beneficial effects that: setting the circumferential spiral water tank can greatly increase the heat exchange area, and at the same time partially remove some fins to shorten the cooling water path and reduce the resistance along the cooling water; the front section of the spiral water tank It is a smooth water flow channel.
  • Vertical spoiler fins are set in the middle of the water tank in the last section. The cooling water enters from the water inlet and then flows along the spiral water tank. Due to the large temperature difference between the boundary layer and the water tank in the first half, the cooling water can absorb heat well. The water temperature is low in the middle and high around, especially at the bottom with the highest temperature and uneven distribution.
  • the heat transfer boundary layer is destroyed, which effectively strengthens the turbulent flow in the channel, the temperature of the cooling water is also evenly distributed, and the convective heat transfer coefficient is greatly improved.
  • the heat generated at the bearing mounting sleeve is large and easy to accumulate, and the cooling water directly takes away the heat through the heat pipe to avoid uneven local heat dissipation.
  • Fig. 1 is a cross-sectional view of a circumferential spiral water tank cooling device for enhancing heat transfer of a gearbox provided by an embodiment of the present invention
  • Figure 2-4 is a schematic diagram of the appearance of the inner shell of the gear box in a circumferential spiral water tank cooling device for enhanced heat transfer of the gear box provided by an embodiment of the present invention
  • Fig. 5 is a schematic view of the appearance of a circumferential spiral water tank cooling device for enhancing heat transfer of a gearbox provided by an embodiment of the present invention.
  • the present embodiment provides a circumferential spiral water tank cooling device for enhanced heat transfer of a gearbox, including a cylindrical shell 1, and a water inlet 11 and a water outlet 12 are provided on the surface of the shell 1, and the shell 1-position hollow structure, the inner shell 1 is provided with a gear box inner shell 2, the gear box inner shell 2 is nested in the shell 1 through a stepped hole, and the outer surface of the gear box inner shell 2 is attached to the inner surface of the outer shell 1.
  • the outer surface of the gear box inner shell 2 is provided with spiral fins 24 along the extending direction of the gear box inner shell 2.
  • the space between adjacent fins 24 is a water tank 21, and the water tank 21 is connected to the water inlet 11 and the water outlet.
  • the water port 12 is connected; the cooling water enters through the water inlet 11 , passes through the spiral water tank 21 , and finally flows out through the water outlet 12 .
  • the turbulence structure 22 can increase the turbulence of the cooling water to make the temperature of the cooling water fully uniform, increase the heat transfer coefficient, increase the turbulence of the cooling water to make the temperature of the cooling water fully uniform, and improve the heat exchange efficiency of the second half .
  • the total length occupied by the spoiler structure 2 is less than half of the total length of the water tank 21 . This can maximize the efficiency of heat exchange.
  • the spoiler structure 22 is a spoiler fin, and the spoiler fin is a vertical fin, and the spoiler fin is arranged along the extending direction of the water tank, and It is arranged in the middle of the water tank.
  • the height of the spoiler fins is smaller than the depth of the water tank.
  • the spoiler structure 22 is a plurality of spoiler columns, and the spoiler columns are arranged at intervals along the extending direction of the water tank, and are arranged in the middle of the water tank.
  • the diameter of the spoiler post is smaller than the width of the water tank, and the height of the spoiler post is smaller than the depth of the water tank. Its function is the same as that of the spoiler ribs.
  • the spoiler columns can act as obstacles when the water flow passes by, reducing the flow rate of cooling water and increasing the heat exchange time, thereby further Improve heat transfer efficiency.
  • the spoiler structure is a plurality of U-shaped spoilers, and the multiple U-shaped spoilers are evenly distributed in the water tank 21, and the spoiler One end of the member is connected to the side wall of the water tank 21, and the width of the spoiler is smaller than the width of the water tank 21; the direction of the opening of the spoiler is opposite to the direction of the water flow.
  • the spoiler can be placed in the middle of the water tank 21 by integral molding or welding, and there is a gap between the side of the water tank 21, or it can be evenly placed along one of the side walls, so that the spoiler One side of the flow member is connected to the side wall, and there is a gap between the other side and the other side wall, and the gap is used to allow water to pass through, and can also be alternately distributed along the two side walls.
  • the U-shaped spoiler can maximize the resistance to the water flow, thereby increasing the heat exchange time and improving the heat exchange efficiency.
  • the protection scope of the present invention for the turbulence structure is not limited to the above-mentioned embodiments, as long as the structures that can decelerate the water flow or strengthen the turbulent flow in the tank are within the protection scope of the present invention,
  • the structure of the Tesla one-way valve, or the bottom of the sink is set in an uneven structure and so on.
  • a bearing mounting sleeve 23 is provided at the end of the gear box inner shell 2 near the water outlet 12, and the bearing mounting sleeve 23 extends to the inside of the gear box inner shell 2 and is between the inner surface of the gear box inner shell 2. There are gaps.
  • the outer surface of the bearing mounting sleeve 23 is wound with a heat pipe 3, and the heat pipe 3 communicates with the water tank 21. Since the water tank 21 communicates with the heat pipe 3, the cooling water flows through the heat pipe. The locally accumulated heat at the installation sleeve 23 is directly brought back to the water tank 21 to avoid local overheating due to uneven heat dissipation.
  • the fins 24 are interrupted at intervals to allow adjacent water tanks to communicate.
  • the length of the interruption is less than half of the inner circumference of the housing 1 , which can reduce the number of local water tanks and shorten the cooling water path.
  • the circumferential spiral water tank 21 on the barrel cover of the circumferential spiral water tank cooling device can greatly increase the heat exchange area, and at the same time, part of the fins 21 are partially removed to shorten the cooling water path and reduce the resistance along the cooling water; the front section of the spiral water tank 21 It is a smooth flow channel, and a vertical turbulence structure 22 is set in the middle of the water tank at the end.
  • the cooling water enters from the water inlet and then flows along the spiral water tank 21. Due to the large temperature difference between the boundary layer and the water tank in the first half, the cooling water can absorb heat well , the water temperature is low in the middle and high around, especially at the bottom with the highest temperature and uneven distribution.
  • the heat transfer boundary layer is destroyed, which effectively strengthens the turbulent flow in the channel, the temperature of the cooling water is evenly distributed, and the convective heat transfer coefficient is greatly improved.
  • the heat generated at the bearing mounting sleeve 23 is large and easy to accumulate, and the cooling water directly takes away the heat through the heat pipe 3 to avoid uneven local heat dissipation.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Details Of Gearings (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

一种用于齿轮箱强化传热的周向螺旋水槽冷却装置，包括圆柱状的外壳（1），外壳（1）的表面开设有进水口（11）和出水口（12），外壳（1）的内部设置有齿轮箱内壳（2），齿轮箱内壳（2）的外表面与外壳（1）的内表面贴合，齿轮箱内壳（2）的外表面设置有沿着齿轮箱内壳（2）延伸方向的螺旋状的翅片（24），相邻翅片（24）之间的空间为水槽（21），水槽（21）与进水口（11）以及出水口（12）连通；在靠近出水口（12）的一侧的水槽（21）中设置有扰流结构（22）；该冷却装置通过设置周向螺旋水槽可大幅提高换热面积，另外，水槽中设置的扰流结构可以破坏传热边界层，有效加强了通道内湍流流动，冷却水温度也分布均匀，对流换热系数得以大幅提高。

Description

一种用于齿轮箱强化传热的周向螺旋水槽冷却装置 技术领域
本发明涉及齿轮箱冷却领域，特别涉及一种用于齿轮箱散热的周向螺旋水槽冷却装置。
背景技术
齿轮传动现在广泛用于各行各业。以盾构机中的齿轮箱为研究对象，在运行过程中，由于存在齿轮啮合摩擦、滑动轴承摩擦、齿轮搅油等摩擦损失，所以产生很多热量。传动装置的产热不仅对系统的润滑和冷却有影响，而且对关键结构部件的正常工作也有很大影响，直接影响到传动效果和传动系统的动力性能。齿轮箱依靠周向螺旋水槽结构进行散热，冷却水流经螺旋水槽后将热量带出。为了加大换热面积采用较长的螺旋水槽，首先导致冷却水沿程阻力增大，消耗能量增加；其次导致进水口和出水口温差较大，水槽内温度分布不均，换热效率不断降低，所以加强齿轮箱的散热性能具有相当的重要性和迫切性。因此设计了一种用于齿轮箱强化传热的周向螺旋水槽冷却装置来解决以上问题。
发明内容
本发明提出了一种用于齿轮箱强化传热的周向螺旋水槽冷却装置，目的是解决齿轮箱局部散热不均匀的问题。
为了实现上述功能，本发明提供相关技术方案，具有如下：一种用于齿轮箱强化传热的周向螺旋水槽冷却装置，包括圆柱状的外壳，所述外壳的表面开设有进水口和出水口，所述外壳的内部设置有齿轮箱内壳，所述齿轮箱内壳的外表面与所述外壳的内表面贴合，所述齿轮箱内壳的外表面设置有沿着所述齿轮箱内壳延伸方向的螺旋状的翅片，相邻翅片之间的空间为水槽，所述水槽与所述进水口以及出水口连通；所述齿轮箱内壳靠近所述出水口一侧的端部设置有轴承安装套，所述轴承安装套延伸至所述齿轮箱内壳的内部，且与所述齿轮箱内壳的内表面之间有间隙；在靠近所述出水口的一侧的水槽中设置有扰流结构。由于后半段冷却水温度四周高中间低，所以在水槽的后半段设置有扰流结构，其作用是增加冷却水的扰动使冷却水的温度充分均匀，提高后半段的换热效率。
作为优选的一种技术方案，所述扰流结构所占据的总长度小于所述水槽总长度的一半。
作为优选的一种技术方案，所述扰流结构为扰流肋片，所述扰流肋片为竖直的肋片，所述扰流肋片沿着所述水槽的延伸方向设置，且设置在所述水槽的中部。
在上述技术方案的基础上，优选的，所述扰流肋片的高度小于所述水槽的深度。
作为优选的一种技术方案，所述扰流结构为多个扰流柱，所述扰流柱沿着所述水槽的延伸方向间隔设置，且设置在所述水槽的中部。
在上述技术方案的基础上，优选的，所述扰流柱的直径小于所述水槽的宽度，所述扰流 柱的高度小于所述水槽的深度。
作为优选的一种技术方案，所述扰流结构为多个U形的扰流件，所述多个U形的扰流件均匀的分布在所述水槽内，所述扰流件的一端与所述水槽的侧壁连接，且所述扰流件的宽度小于所述水槽的宽度；所述扰流件的开口的朝向与水流的方向相反。
作为优选的一种技术方案，每间隔一段距离将所述翅片打断，使相邻的水槽连通。这样使得局部水槽数减少则冷却水路径变短，降低冷却水的沿程阻力。
在上述技术方案的基础上，优选的，打断的长度小于所述外壳内周长的一半。
作为优选的一种技术方案，所述轴承安装套的外表面缠绕有导热管，所述导热管与所述水槽连通。由于轴承安装套处局部散热不佳，最后在轴承安装套处缠绕导热管，导热管与水槽连通，冷却水流经导热管可将轴承安装套处局部热量直接带走，避免局部温度过高。
本发明相对于现有技术的有益效果是：设置周向螺旋水槽可大幅提高换热面积，同时在局部去除部分翅片，使冷却水路径变短，降低冷却水的沿程阻力；螺旋水槽前段为光滑的流水通道，末段水槽中间设置竖直的扰流肋片，冷却水由进水口进入后沿螺旋水槽流动，前半段由于边界层与水槽温差大，冷却水能够很好的吸收热量，水温中间低四周高，特别是底部温度最高，分布不均。当冷却水经过后半段扰流肋片时，传热边界层被破坏，有效加强了通道内湍流流动，冷却水温度也分布均匀，对流换热系数得以大幅提高。同时，轴承安装套处产热量大易积聚，冷却水通过导热管将热量直接带走，避免局部散热不均。
附图说明
图1是本发明一实施例提供的一种用于齿轮箱强化传热的周向螺旋水槽冷却装置的剖视图；
图2‐4是本发明一实施例提供的一种用于齿轮箱强化传热的周向螺旋水槽冷却装置中齿轮箱内壳的外观示意图；
图5是本发明一实施例提供的一种用于齿轮箱强化传热的周向螺旋水槽冷却装置的外观示意图。
具体实施方式
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，所描述的实施例仅是本发明的一部分实施例，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做出创造性劳动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。
参照图1和图2，本实施例提供一种用于齿轮箱强化传热的周向螺旋水槽冷却装置，包括圆柱状的外壳1，外壳1的表面开设有进水口11和出水口12，外壳1位中空结构，外壳1 的内部设置有齿轮箱内壳2，齿轮箱内壳2通过台阶孔嵌套在外壳1内，且齿轮箱内壳2的外表面与外壳1的内表面贴合。
在齿轮箱内壳2的外表面设置有沿着该齿轮箱内壳2延伸方向的螺旋状的翅片24，相邻翅片24之间的空间为水槽21，水槽21与进水口11以及出水口12连通；冷却水由进水口11进入，经过螺旋的水槽21后，最后经过出水口12流出。
冷却水到达水槽21后半段时，由于后半段冷却水温度四周高中间低，温度已上升且分布不均，为了提高水槽后半段的换热效率，所以在水槽的后半段设置有扰流结构22，扰流结构22可增加冷却水的扰动使冷却水的温度充分均匀，增大换热系数，增加冷却水的扰动使冷却水的温度充分均匀，提高后半段的换热效率。
在一些实施例中，扰流结构2所占据的总长度小于所述水槽21总长度的一半。这样能够最大效率的提高换热效率。
在一些实施例中，如图2所示，扰流结构22为扰流肋片，扰流肋片为竖直的肋片，所述扰流肋片沿着所述水槽的延伸方向设置，且设置在所述水槽的中部，在本实施例中，扰流肋片的高度小于所述水槽的深度。当冷却水经过后半段扰流肋片时，传热边界层被破坏，有效加强了通道内湍流流动，冷却水温度也分布均匀，对流换热系数得以大幅提高。
在另一实施例中，如图3所示，扰流结构22为多个扰流柱，扰流柱沿着所述水槽的延伸方向间隔设置，且设置在所述水槽的中部。在本实施中，所述扰流柱的直径小于所述水槽的宽度，所述扰流柱的高度小于所述水槽的深度。其作用与扰流肋片相同，另外，由于相邻的扰流柱之间有缝隙，水流经过时能够扰流柱起到阻碍作用，降低了冷却水的流速，增加了换热时间，从而进一步提高换热效率。
在另一实施例中，如图4所示，扰流结构为多个U形的扰流件，所述多个U形的扰流件均匀的分布在所述水槽21内，所述扰流件的一端与所述水槽21的侧壁连接，且所述扰流件的宽度小于所述水槽21的宽度；所述扰流件的开口的朝向与水流的方向相反。
在此需要说明的是，扰流件可以通过一体成型或者焊接的方式放置在水槽21的中间，与水槽21的侧边之间有间隙，也可以沿着其中一个侧壁均匀摆放，让扰流件的一侧与侧壁连接，另一侧与另一个侧壁之间有间隙，间隙用来让水流通过，还可以沿着两个侧壁交错分布。U形的扰流件能够最大化的对水流产生阻碍作用，从而增加了换热时间提高换热效率。
在此还需要说明的是，本发明对于扰流结构的保护范围不局限于上述的实施例，只要能够对水流起到减速作用或者加强水槽内湍流流动的结构都在本发明的保护范围内，例如特斯拉单向阀的结构，或者将水槽底部设置成凹凸不平的结构等等。
在齿轮箱内壳2靠近出水口12一侧的端部设置有轴承安装套23，轴承安装套23延伸至 齿轮箱内壳2的内部，且与所述齿轮箱内壳2的内表面之间有间隙。在一些实施例中，如图5所示，轴承安装套23的外表面缠绕有导热管3，导热管3与水槽21连通，由于水槽21与导热管3相通，冷却水流经导热管可将轴承安装套23处局部积聚的热量直接带回水槽21，避免因散热不均导致局部温度过高。
在另一实施例中，如图2所示，为了降低冷却水的沿程阻力，每间隔一段距离将翅片24打断，使相邻的水槽连通。在本实施例中，打断的长度小于外壳1内周长的一半，这样能使得局部水槽数减少则冷却水路径变短。
该周向螺旋水槽冷却装置桶盖设置周向螺旋水槽21可大幅提高换热面积，同时在局部去除部分翅片21，使冷却水路径变短，降低冷却水的沿程阻力；螺旋水槽21前段为光滑的流水通道，末段水槽中间设置竖直的扰流结构22，冷却水由进水口进入后沿螺旋水槽21流动，前半段由于边界层与水槽温差大，冷却水能够很好的吸收热量，水温中间低四周高，特别是底部温度最高，分布不均。当冷却水经过后半段扰流结构22时，传热边界层被破坏，有效加强了通道内湍流流动，冷却水温度也分布均匀，对流换热系数得以大幅提高。同时，轴承安装套23处产热量大易积聚，冷却水通过导热管3将热量直接带走，避免局部散热不均。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (10)

  1. 一种用于齿轮箱强化传热的周向螺旋水槽冷却装置，包括圆柱状的外壳(1)，其特征在于：所述外壳(1)的表面开设有进水口(11)和出水口(12)，所述外壳(1)的内部设置有齿轮箱内壳(2)，所述齿轮箱内壳(2)的外表面与所述外壳(1)的内表面贴合，所述齿轮箱内壳(2)的外表面设置有沿着所述齿轮箱内壳(2)延伸方向的螺旋状的翅片(24)，相邻翅片(24)之间的空间为水槽(21)，所述水槽(21)与所述进水口(11)以及出水口(12)连通；所述齿轮箱内壳(2)靠近所述出水口(12)一侧的端部设置有轴承安装套(23)，所述轴承安装套(23)延伸至所述齿轮箱内壳(2)的内部，且与所述齿轮箱内壳(2)的内表面之间有间隙；在靠近所述出水口的一侧的水槽(21)中设置有扰流结构(22)。
  2. 根据权利要求1所述的周向螺旋水槽冷却装置，其特征在于：所述扰流结构(22)所占据的总长度小于所述水槽(21)总长度的一半。
  3. 根据权利要求1或2所述的周向螺旋水槽冷却装置，其特征在于：所述扰流结构(22)为扰流肋片，所述扰流肋片为竖直的肋片，所述扰流肋片沿着所述水槽(21)的延伸方向设置，且设置在所述水槽(21)的中部。
  4. 根据权利要求3所述的周向螺旋水槽冷却装置，其特征在于：所述扰流肋片的高度小于所述水槽(21)的深度。
  5. 根据权利要求1或2所述的周向螺旋水槽冷却装置，其特征在于：所述扰流结构(22)为多个扰流柱，所述扰流柱沿着所述水槽(21)的延伸方向间隔设置，且设置在所述水槽(21)的中部。
  6. 根据权利要求5所述的周向螺旋水槽冷却装置，其特征在于：所述扰流柱的直径小于所述水槽(21)的宽度，所述扰流柱的高度小于所述水槽(21)的深度。
  7. 根据权利要求1或2所述的周向螺旋水槽冷却装置，其特征在于：所述扰流结构(22)为多个U形的扰流件，所述多个U形的扰流件均匀的分布在所述水槽(21)内，且所述扰流件的宽度小于所述水槽(21)的宽度；所述扰流件的开口的朝向与水流的方向相反。
  8. 根据权利要求1所述的周向螺旋水槽冷却装置，其特征在于：每间隔一段距离将所述翅片(24)打断，使相邻的水槽(24)连通。
  9. 根据权利要求8所述的周向螺旋水槽冷却装置，其特征在于：打断的长度小于所述外壳(1)内周长的一半。
  10. 根据权利要求1所述的周向螺旋水槽冷却装置，其特征在于：所述轴承安装套(23)的外表面缠绕有导热管(3)，所述导热管(3)与所述水槽(21)连通。
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