WO2021114489A1 - 离心式压缩机径向磁轴承与定子独立风冷结构 - Google Patents

离心式压缩机径向磁轴承与定子独立风冷结构 Download PDF

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WO2021114489A1
WO2021114489A1 PCT/CN2020/077348 CN2020077348W WO2021114489A1 WO 2021114489 A1 WO2021114489 A1 WO 2021114489A1 CN 2020077348 W CN2020077348 W CN 2020077348W WO 2021114489 A1 WO2021114489 A1 WO 2021114489A1
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magnetic bearing
casing
radial magnetic
stator
air
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PCT/CN2020/077348
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English (en)
French (fr)
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施陈莲
刘淑云
吴立华
董继勇
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南京磁谷科技股份有限公司
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Publication of WO2021114489A1 publication Critical patent/WO2021114489A1/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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • 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
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer

Definitions

  • the utility model relates to the technical field of air-cooled structures, in particular to an independent air-cooled structure of a radial magnetic bearing and a stator of a centrifugal compressor.
  • a centrifugal compressor is a compressor in which the impeller performs work on the gas to increase the pressure and speed of the gas and complete the gas transportation.
  • the gas flows through the impeller in the radial direction.
  • Centrifugal compressor is also called turbo compressor: it is mainly used to compress gas, and it is mainly composed of rotor and stator.
  • the rotor includes an impeller and a shaft.
  • the impeller has blades, a balance disc and a part of the shaft seal; the main body of the stator is a cylinder , There are also diffusers, bends, returners, intake pipes, exhaust pipes and other devices.
  • the working principle of the centrifugal compressor is: when the impeller rotates at a high speed, the gas rotates with it.
  • centrifugal compressors Under the action of centrifugal force, the gas is thrown into the diffuser behind, and a vacuum zone is formed at the impeller. At this time, the outside is fresh. The gas enters the impeller. The impeller continuously rotates, and the gas is continuously sucked in and thrown out, thus maintaining the continuous flow of gas.
  • centrifugal compressors have the following advantages: compact structure, small size, light weight; continuous and uniform exhaust, no intermediate tanks and other devices; less vibration, fewer wearing parts, and no need for bulky Bulky basic parts; except for bearings, the machine does not need lubrication, saves oil, and does not pollute the compressed gas; high speed; low maintenance and easy adjustment.
  • the centrifugal compressor will easily cause the internal machine temperature of the centrifugal compressor to be too high for a long time, which affects the service life of the parts and cannot meet people's needs.
  • the purpose of the utility model is to solve the problem that the centrifugal compressor in actual use in the prior art will easily cause the internal machine temperature of the centrifugal compressor to be too high for a long time, which affects the service life of the parts and components, so it cannot satisfy people
  • the proposed centrifugal compressor has an independent air-cooled structure with radial magnetic bearing and stator.
  • the radial magnetic bearing of the centrifugal compressor and the stator have an independent air-cooling structure, including a casing, a stator is arranged inside the casing, an air compressor magnetic bearing seat is arranged on the casing, and a radial magnetic bearing is arranged on the casing ,
  • the casing is provided with a waist-shaped hole, the casing is provided with a circular hole, the casing is provided with a motor air inlet, the casing is provided with a motor air outlet, and the casing is provided with a magnetic bearing air inlet,
  • the casing is provided with a magnetic bearing air outlet, which can greatly reduce the internal temperature of the machine, increase the service life of the parts, and effectively improve the efficiency.
  • the circular holes in the four directions at both ends of the casing of the present invention are installed correspondingly to the holes of the air compressor magnetic bearing seat and the radial magnetic bearing, and the circular holes facilitate heat dissipation.
  • the cooling of the stator of the present invention is performed through a waist-shaped hole opened on the circumference of the casing.
  • the cooling method of the radial magnetic bearing of the present invention is that the casing is provided with circular holes in four directions.
  • the two circular holes are the motor air inlet and the motor air outlet for air cooling, and the circular holes are for the radial magnetic
  • the bearing dissipates heat.
  • the motor air inlet holes and the motor air outlet holes of the present invention are both waist-shaped structural holes.
  • the magnetic bearing air inlet and the magnetic bearing air outlet of the present invention are circular structural holes.
  • the radial magnetic bearing of the centrifugal compressor and the stator have an independent air-cooling structure.
  • a waist-shaped hole is opened on the casing, the stator is arranged in the casing, and the stator cooling is through the opening on the circumference of the casing.
  • the waist-shaped holes for cooling and the casing There is an interference fit between the waist-shaped holes for cooling and the casing; the circular holes in the four directions at both ends of the casing of the utility model are installed correspondingly to the holes of the air compressor magnetic bearing seat and the radial magnetic bearing; the stator cooling is Cooling is carried out through the waist-shaped holes on the circumference of the casing; the cooling method of radial magnetic bearings is through the circular holes in the casing in four directions, and the two circular holes are the air inlet of the motor and the air outlet of the two motors. Air-cooled, they are independent of each other and do not affect each other, so that the internal temperature of the machine is greatly reduced, the service life of the parts is increased, and the efficiency is effectively improved.
  • the utility model has simple structure and convenient operation, can greatly reduce the internal temperature of the machine, increase the service life of parts and components, effectively improve efficiency, and can meet people's needs.
  • Figure 1 is a schematic diagram of the front view of the radial magnetic bearing and stator independent air cooling structure of the centrifugal compressor proposed by the utility model;
  • Figure 2 is a partial structural diagram of the radial magnetic bearing and stator independent air cooling structure of the centrifugal compressor proposed by the utility model.
  • the centrifugal compressor radial magnetic bearing and the stator independent air-cooling structure including a casing 1, the inside of the casing 1 is provided with a stator 2, and the casing 1 is provided with an air compressor magnetic bearing seat 3,
  • the casing 1 is provided with a radial magnetic bearing 4, the casing 1 is provided with a waist-shaped hole 5, the casing 1 is provided with a circular hole 6, the casing 1 is provided with a motor air inlet 7, and the casing 1 is
  • the motor air outlet 8 is opened, the magnetic bearing air inlet 9 is opened on the casing 1, and the magnetic bearing air outlet 10 is opened on the casing 1, which can greatly reduce the internal temperature of the machine, increase the service life of the parts, and effectively improve the efficiency. .
  • the circular holes 6 in the four directions at both ends of the casing 1 are installed correspondingly to the holes of the air compressor magnetic bearing seat 3 and the radial magnetic bearing 4, and the circular holes 6 facilitate heat dissipation.
  • the stator 2 is cooled through a waist-shaped hole 5 opened on the circumference of the casing 1, and the waist-shaped hole 5 can radiate heat and cool the stator 2.
  • the cooling method of the radial magnetic bearing 4 is that the casing 1 is provided with round holes 6 in four directions.
  • the two round holes 6 are the motor air inlet 7 and the motor air outlet 8 for air cooling. 6 Perform heat dissipation on the radial magnetic bearing 4.
  • the motor air inlet hole 7 and the motor air outlet hole 8 are both waist-shaped structural holes.
  • the magnetic bearing air inlet 9 and the magnetic bearing air outlet 10 are circular structural holes.
  • the casing 1 When the utility model is in use, the casing 1 has a waist-shaped hole 5, the stator 2 is arranged in the casing 1, and the stator 2 is cooled by the waist-shaped hole 5 on the circumference of the casing 1 for cooling and the casing It is an interference fit.
  • the circular holes 6 in the four directions at both ends of the casing 1 are installed corresponding to the holes in the air compressor magnetic bearing seat 3 and radial magnetic bearing 4.
  • the stator 2 Cooling is carried out through the waist-shaped holes 5 opened on the circumference of the casing 1; the cooling method of the radial magnetic bearing 4 is through the circular holes 6 on the casing 1 in four directions, and the two circular holes 6 are the air inlets of the motor
  • the air outlets of the 7 and the electric two machines are air-cooled. They are independent of each other and do not affect each other. This greatly reduces the internal temperature of the machine, increases the service life of the parts, and effectively improves the efficiency, thereby greatly reducing the internal temperature of the machine and increasing the use of parts Longevity, effectively improve efficiency, so meet people's needs.

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

Abstract

一种离心式压缩机径向磁轴承与定子独立风冷结构，其包括机壳（1），机壳（1）的内部设置有定子（2），机壳（1）两端设置有空压机磁轴承座（3），机壳上设置有径向磁轴承（4），机壳（1）上开设有腰形孔（5），即电机进风孔（7）、电机出风孔（8），机壳（1）上开设有圆孔（6）、即径向磁轴承进风孔（9）、径向磁轴承出风孔（10）。其结构简单，操作方便，能够降低机器内部温度，提高零部件使用寿命，有效提高效率。

Description

离心式压缩机径向磁轴承与定子独立风冷结构 技术领域
本实用新型涉及风冷结构技术领域，尤其涉及一种离心式压缩机径向磁轴承与定子独立风冷结构。
背景技术
离心式压缩机是叶轮对气体作功使气体的压力和速度升高，完成气体的运输，气体沿径向流过叶轮的压缩机。离心式压缩机又称透平式压缩机：主要用来压缩气体，主要由转子和定子两部分组成：转子包括叶轮和轴，叶轮上有叶片、平衡盘和一部分轴封；定子的主体是气缸，还有扩压器、弯道、回流器、进气管、排气管等装置。离心式压缩机的工作原理是：当叶轮高速旋转时，气体随着旋转，在离心力作用下，气体被甩到后面的扩压器中去，而在叶轮处形成真空地带，这时外界的新鲜气体进入叶轮。叶轮不断旋转，气体不断地吸入并甩出，从而保持了气体的连续流动。与往复式压缩机比较，离心式压缩机具有下述优点：结构紧凑，尺寸小，重量轻；排气连续、均匀，不需要中间罐等装置；振动小，易损件少，不需要庞大而笨重的基础件；除轴承外，机器内部不需润滑，省油，且不污染被压缩的气体；转速高；维修量小，调节方便。
但是在实际使用中，离心式压缩机时间一长很容易导致离心式压缩机内部机器温度过高，影响了零部件的使用寿命，不能满足人们的需求。
发明内容
本实用新型的目的是为了解决现有技术中存在在实际使用中，离心式压缩机时间一长很容易导致离心式压缩机内部机器温度过高，影响了零部件的使用寿命，所以不能满足人们的需求的缺点，而提出的离心式压缩机径向磁轴承与定子独立风冷结构。
为了实现上述目的，本实用新型采用了如下技术方案：
离心式压缩机径向磁轴承与定子独立风冷结构，包括机壳，所述机壳的内部设置有定子，机壳上设置有空压机磁轴承座，机壳上设置有径向磁轴承，机壳上开设有腰形孔，机壳上开设有有圆孔，机壳上开设有电机进风孔，机壳上开设有电机出风孔，机壳上开设有磁轴承进风孔，机壳上开设有磁轴承出风孔，能够大大降低机器内部温度，提高零部件使用寿命，有效提高效率。
优选的，本实用新型的机壳两端四个方向上的圆孔与空压机磁轴承座和径向磁轴承的孔对应安装，圆孔方便散热。
优选的，本实用新型的定子冷却是通过机壳圆周上开的腰形孔进行冷却。
优选的，本实用新型的径向磁轴承冷却方式是通过机壳上四个方向开有圆孔，两个圆孔为电机进风孔和电机出风孔进行风冷，圆孔对径向磁轴承进行散热。
优选的，本实用新型的电机进风孔和电机出风孔均为腰形结构孔。
优选的，本实用新型的磁轴承进风孔和磁轴承出风孔为圆形结 构孔。
本实用新型中，所述离心式压缩机径向磁轴承与定子独立风冷结构，使用中，机壳上开腰形孔，定子设于机壳内，且定子冷却是通过机壳圆周上开的腰形孔进行冷却与机壳之间是过盈配合；本实用新型机壳两端四个方向上的圆孔与空压机磁轴承座和径向磁轴承的孔对应安装；定子冷却是通过机壳圆周上开的腰形孔进行冷却；径向磁轴承冷却方式是通过机壳上四个方向开有圆孔，两个圆孔为电机进风孔和电两个机出风孔进行风冷，他们相互独立互不影响，这样大大降低机器内部温度，提高零部件使用寿命，有效提高效率。
本实用新型结构简单，操作方便，能够大大降低机器内部温度，提高零部件使用寿命，有效提高效率，能够满足了人们的需求。
附图说明
图1为本实用新型提出的离心式压缩机径向磁轴承与定子独立风冷结构的主视结构示意图；
图2为本实用新型提出的离心式压缩机径向磁轴承与定子独立风冷结构的局部结构示意图。
图中：1机壳、2定子、3空压机磁轴承座、4径向磁轴承、5腰形孔、6圆孔、7电机进风孔、8电机出风孔、9磁轴承进风孔、10磁轴承出风孔。
具体实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅 是本实用新型一部分实施例，而不是全部的实施例。
参照图1-2，离心式压缩机径向磁轴承与定子独立风冷结构，包括机壳1，机壳1的内部设置有定子2，机壳1上设置有空压机磁轴承座3，机壳1上设置有径向磁轴承4，机壳1上开设有腰形孔5，机壳1上开设有有圆孔6，机壳1上开设有电机进风孔7，机壳1上开设有电机出风孔8，机壳1上开设有磁轴承进风孔9，机壳1上开设有磁轴承出风孔10，能够大大降低机器内部温度，提高零部件使用寿命，有效提高效率。
本实用新型中，机壳1两端四个方向上的圆孔6与空压机磁轴承座3和径向磁轴承4的孔对应安装，圆孔6方便散热。
本实用新型中，定子2冷却是通过机壳1圆周上开的腰形孔5进行冷却，腰形孔5对定子2就行散热冷却。
本实用新型中，径向磁轴承4冷却方式是通过机壳1上四个方向开有圆孔6，两个圆孔6为电机进风孔7和电机出风孔8进行风冷，圆孔6对径向磁轴承4进行散热。
本实用新型中，所述电机进风孔7和电机出风孔8均为腰形结构孔。
本实用新型中，所述磁轴承进风孔9和磁轴承出风孔10为圆形结构孔。
本实用新型在使用时，机壳1上开腰形孔5，定子2设于机壳1内，且定子2冷却是通过机壳1圆周上开的腰形孔5进行冷却与机壳之间是过盈配合，如图一所示，机壳1两端四个方向上的圆孔6 与空压机磁轴承座3和径向磁轴承4的孔对应安装，如图2所示，定子2冷却是通过机壳1圆周上开的腰形孔5进行冷却；径向磁轴承4冷却方式是通过机壳1上四个方向开有圆孔6，两个圆孔6为电机进风孔7和电两个机出风孔8进行风冷，他们相互独立互不影响，这样大大降低机器内部温度，提高零部件使用寿命，有效提高效率，从而能够大大降低机器内部温度，提高零部件使用寿命，有效提高效率，所以满足了人们的需求。
以上所述，仅为本实用新型较佳的具体实施方式，但本实用新型的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本实用新型揭露的技术范围内，根据本实用新型的技术方案及其实用新型构思加以等同替换或改变，都应涵盖在本实用新型的保护范围之内。

Claims (6)

  1. 离心式压缩机径向磁轴承与定子独立风冷结构，包括机壳(1)，其特征在于，所述机壳(1)的内部设置有定子(2)，机壳(1)上设置有空压机磁轴承座(3)，机壳(1)上设置有径向磁轴承(4)，机壳(1)上开设有腰形孔(5)，机壳(1)上开设有有圆孔(6)，机壳(1)上开设有电机进风孔(7)，机壳(1)上开设有电机出风孔(8)，机壳(1)上开设有磁轴承进风孔(9)，机壳(1)上开设有磁轴承出风孔(10)。
  2. 根据权利要求1所述的离心式压缩机径向磁轴承与定子独立风冷结构，其特征在于，所述机壳(1)两端四个方向上的圆孔(6)与空压机磁轴承座(3)和径向磁轴承(4)的孔对应安装。
  3. 根据权利要求1所述的离心式压缩机径向磁轴承与定子独立风冷结构，其特征在于，所述定子(2)冷却是通过机壳(1)圆周上开的八个方向的腰形孔(5)进行冷却。
  4. 根据权利要求1所述的离心式压缩机径向磁轴承与定子独立风冷结构，其特征在于，所述径向磁轴承(4)冷却方式是通过机壳(1)上四个方向开有圆孔(6)，两个圆孔(6)为电机进风孔(7)和电机出风孔(8)进行风冷。
  5. 根据权利要求1所述的离心式压缩机径向磁轴承与定子独立风冷结构，其特征在于，所述电机进风孔(7)和电机出风孔(8)均为腰形结构孔。
  6. 根据权利要求1所述的离心式压缩机径向磁轴承与定子独立风冷结构，其特征在于，所述磁轴承进风孔(9)和磁轴承出风孔(10) 为圆形结构孔。
PCT/CN2020/077348 2019-12-11 2020-02-29 离心式压缩机径向磁轴承与定子独立风冷结构 WO2021114489A1 (zh)

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