WO2021114490A1 - 离心式压缩机用冷却定子的冷却风道结构 - Google Patents

离心式压缩机用冷却定子的冷却风道结构 Download PDF

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WO2021114490A1
WO2021114490A1 PCT/CN2020/077349 CN2020077349W WO2021114490A1 WO 2021114490 A1 WO2021114490 A1 WO 2021114490A1 CN 2020077349 W CN2020077349 W CN 2020077349W WO 2021114490 A1 WO2021114490 A1 WO 2021114490A1
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cooling air
air duct
stator
casing
cooling
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PCT/CN2020/077349
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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 WO2021114490A1 publication Critical patent/WO2021114490A1/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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium

Definitions

  • the utility model relates to the technical field of air compressors, in particular to a cooling air duct structure used for cooling 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 motor is likely to cause internal heat generation after a long time of use, and it is likely to cause damage to the motor under high-load operation after the motor heats up.
  • the purpose of the utility model is to provide a cooling air duct structure for cooling the stator of a centrifugal compressor in view of the defects and deficiencies of the prior art. It has a simple structure and is convenient to install and disassemble. At the same time, it can effectively solve the problem of internal heat dissipation of the motor and improve the motor. Life.
  • the present utility model adopts the following technical solutions: it includes a casing, a motor support, a rotor, a stator, a first cooling air duct, a second cooling air duct, a connecting plate, and a nut.
  • the stator is located in the casing.
  • the rotor is located in the middle of the inner side of the stator.
  • the first cooling air channel and the second cooling air channel are both semi-circular components.
  • the corresponding positions on the left and right sides of the first cooling air channel and the second cooling air channel are provided with connections
  • the first cooling air duct and the second cooling air duct are wrapped on the outside of the casing, and the connecting plates on the first cooling air duct and the second cooling air duct are locked by nuts, and the motor bracket is installed at the bottom of the casing.
  • waist-shaped structural holes are provided on the left and right sides of the first cooling air duct and the second cooling air duct of the present invention.
  • the outer sides of the left and right sides of the casing of the present invention are symmetrically provided with a number of waist-shaped holes.
  • the number of waist-shaped holes of the present invention is eight, and the waist-shaped holes correspond to the positions of the waist-shaped structural holes on both sides of the first cooling air passage and the second cooling air passage.
  • positioning pins are provided between the inner sides of the first cooling air duct and the second cooling air duct of the present invention and the casing respectively.
  • the utility model combines the first cooling air duct and the second cooling air duct through a connecting plate, and is locked by a nut, with a simple structure and convenient installation and disassembly.
  • the utility model utilizes several waist-shaped holes arranged on the casing to cooperate with the first cooling air duct and the second cooling air duct, and effectively solves the problem of heat dissipation inside the motor through the flow of wind, and improves the service life of the motor.
  • a positioning pin is arranged between the inner side of the second cooling air duct of the present invention and the casing to prevent the cooling air duct from rotating on the circumference. While effectively solving the problem of internal heat dissipation of the motor, it also ensures the stability of the motor's work.
  • Figure 1 is a left cross-sectional view of the internal structure of the present invention.
  • Figure 2 is a schematic diagram of the connection relationship of the positioning pin of the present invention.
  • Figure 3 is a schematic diagram of the working principle of the utility model
  • the technical solution adopted by the present utility model is: it includes a casing 1, a motor support 2, a rotor 3, a stator 4, a first cooling air duct 5, and a second cooling air duct 6.
  • the connecting plate 7, the nut 8, the stator 4 is located inside the casing 1
  • the rotor 3 is located in the middle of the inner side of the stator 4
  • the first cooling air duct 5 and the second cooling air duct 6 are both It is a semi-circular component.
  • the first cooling air duct 5 and the second cooling air duct 6 are provided with connecting plates 7 at corresponding positions on the left and right sides.
  • the first cooling air duct 5 and the second cooling air duct 6 are wrapped in the casing 1
  • the connecting plate 7 on the first cooling air channel 5 and the second cooling air channel 6 are matched and locked by the nut 8.
  • the first cooling air channel 5 and the second cooling air channel 6 adopt a semi-circular structure , It is easy to install on the outside of the casing 1. When the motor fails, the air duct can be easily disassembled.
  • the bracket 2 is installed at the bottom of the casing 1.
  • Eight waist-shaped structural holes are provided on the left and right sides of the first cooling air passage 5 and the second cooling air passage 6 of the present invention.
  • a number of waist-shaped holes 10 are symmetrically provided on the outer sides of the left and right sides of the casing 1 of the present invention.
  • the number of the waist-shaped holes 10 of the present invention is eight, and the waist-shaped holes 10 correspond to the positions of the waist-shaped structural holes on both sides of the first cooling air channel 5 and the second cooling air channel 6.
  • the cooling air on the casing 1 blows in from the first cooling air duct 5.
  • the strong wind blows in from the first cooling air duct 5, passes through the stator 4 of the motor, and then exhausts the hot air from the second cooling air duct 6, which can ensure the motor It does not generate heat during operation, which improves the working efficiency of the motor while also increasing the service life of the motor.
  • positioning pins 11 are provided between the inner sides of the first cooling air duct 5 and the second cooling air duct 6 of the present invention and the casing 1 respectively.
  • the first cooling air duct 5 and the second cooling air duct 6 are respectively fixed to the casing 1 with positioning pins 11 to prevent the first cooling air duct 5 and the second cooling air duct 6 from rotating on the outer circumference of the casing 1.
  • the working principle of the utility model when in use, the first cooling air duct 5 and the second cooling air duct 6 are sleeved on the outside of the casing 1, and the first cooling air duct 5 and the second cooling air duct 6 adopt a semicircular structure , It is easy to install on the outside of the casing 1. When the motor fails, the air duct can be easily disassembled.
  • the waist-shaped holes 10 on the left and right sides of the casing 1 and the first cooling air duct 5 and the second cooling air duct 6 The positions of the waist-shaped structural holes on the left and right sides correspond to each other.
  • the cooling air on the casing 1 is blown in from the first cooling air duct 5.
  • the second cooling air duct 6 exhausts the hot air, which can ensure that the motor does not generate heat during operation, and while improving the working efficiency of the motor, it can also increase the service life of the motor.
  • the utility model has the following beneficial effects: it has a simple structure, convenient installation and disassembly, and can effectively solve the problem of heat dissipation inside the motor and increase the service life of the motor.

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

Abstract

离心式压缩机用冷却定子的冷却风道结构，它涉及空压机技术领域。它包含机壳、电机支架、转子、定子、第一冷却风道、第二冷却风道、连接板、螺母，所述的定子位于机壳的内部，所述的转子位于定子的内侧中间位置，所述的第一冷却风道和第二冷却风道均为半圆形构件，第一冷却风道和第二冷却风道包裹在机壳的外侧，第一冷却风道和第二冷却风道通过螺母进行连接锁紧，第一冷却风道和第二冷却风道通过内侧定位销进行圆周锁紧，所述的电机支架安装在机壳底部，它结构简单，安装和拆卸方便，同时可以有效解决电机内部散热的问题，提高电机的使用寿命。

Description

离心式压缩机用冷却定子的冷却风道结构 技术领域
本实用新型涉及空压机技术领域，具体涉及离心式压缩机用来冷却定子的冷却风道结构。
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，电机在长时间的使用后容易造成内部发热，电机发热后在高负荷工作的情况下容易造成电机损坏。
发明内容
本实用新型的目的在于针对现有技术的缺陷和不足，提供离心式压缩机 用冷却定子的冷却风道结构，它结构简单，安装和拆卸方便，同时可以有效解决电机内部散热的问题，提高电机的使用寿命。
为实现上述目的，本实用新型采用以下技术方案是：它包含机壳、电机支架、转子、定子、第一冷却风道、第二冷却风道、连接板、螺母，所述的定子位于机壳的内部，转子位于定子的内侧中间位置，第一冷却风道和第二冷却风道均为半圆形构件，第一冷却风道和第二冷却风道的左右两侧对应位置均设置有连接板，第一冷却风道和第二冷却风道包裹在机壳的外侧，且第一冷却风道和第二冷却风道上的连接板通过螺母进行锁紧，电机支架安装在机壳的底部。
优选的，本实用新型第一冷却风道和第二冷却风道的左右两侧均设置有八个腰形结构孔。
优选的，本实用新型机壳左右两侧的外侧面均对称设置有若干腰形孔。
优选的，本实用新型腰形孔的数量为八个，且腰形孔与第一冷却风道和第二冷却风道两侧的腰形结构孔的位置相对应。
优选的，本实用新型的第一冷却风道、第二冷却风道的内侧分别与机壳之间设置定位销。
采用上述技术方案后，本实用新型有益效果为：
1、本实用新型通过连接板将第一冷却风道和第二冷却风道组合在一起，且通过螺母锁紧，结构简单，安装和拆卸方便。
2、本实用新型利用布置在机壳上的若干个腰型孔与第一冷却风道和第二冷却风道相配合，通过风的流动有效解决电机内部散热的问题，提高电机的使用寿命。
3、本实用新型的第二冷却风道的内侧与机壳之间设置有定位销，防止冷 却风道圆周上转动。在有效解决电机内部散热问题的同时，保证电机工作的稳定性。
附图说明
为了更清楚地说明本实用新型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，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本实用新型的内部结构左视剖视图。
图2是本实用新型定位销的连接关系示意图。
图3是本实用新型的工作原理结构示意图；
附图标记说明：机壳1、电机支架2、转子3、定子4、第一冷却风道5、第二冷却风道6、连接板7、螺母8、腰形孔10、定位销11。
具体实施方式
下面结合附图对本实用新型的技术方案进行详细说明：
如图1、图2、图3所示，本实用新型采用的技术方案是：它包含机壳1、电机支架2、转子3、定子4、第一冷却风道5、第二冷却风道6、连接板7、螺母8，所述的定子4位于机壳1的内部，所述的转子3位于定子4的内侧中间位置，所述的第一冷却风道5和第二冷却风道6均为半圆形构件，第一冷却风道5和第二冷却风道6的左右两侧对应位置均设置有连接板7，第一冷却风道5和第二冷却风道6包裹在机壳1的外侧，且第一冷却风道5和第二冷却风道6上的连接板7相吻合并通过螺母8进行锁紧，第一冷却风道5和第 二冷却风道6采用半圆形结构，便于安装在机壳1的外侧，电机发生故障时，还可以方便对风道进行拆卸，所述的支架2安装在机壳1底部。
本实用新型第一冷却风道5和第二冷却风道6的左右两侧均设置有八个腰形结构孔。
如图1、图3所示，本实用新型在机壳1左右两侧的外侧面均对称设置有若干腰形孔10。
本实用新型腰形孔10的数量为八个，且腰形孔10与第一冷却风道5和第二冷却风道6两侧的腰形结构孔的位置相对应。机壳1上冷却风从第一冷却风道5吹进来，强力的风从第一冷却风道5吹进来后经过电机的定子4然后从第二冷却风道6把热风排出去，可以确保电机在运行过程中不会发热，提高电机工作效率的同时，还可以提高电机的使用寿命。
如图2所示，本实用新型第一冷却风道5、第二冷却风道6的内侧分别与机壳1之间设置定位销11。第一冷却风道5、第二冷却风道6分别与机壳1用定位销11固定，防止第一冷却风道5和第二冷却风道6在机壳1外侧圆周上转动。
本实用新型的工作原理：在使用时将第一冷却风道5和第二冷却风道6套在机壳1的外侧，第一冷却风道5和第二冷却风道6采用半圆形结构，便于安装在机壳1的外侧，电机发生故障时，还可以方便对风道进行拆卸，机壳1左右两侧的若干腰形孔10与第一冷却风道5和第二冷却风道6的左右两侧的腰形结构孔的位置相对应，机壳1上冷却风从第一冷却风道5吹进来，强力的风从第一冷却风道5吹进来后经过电机的定子4然后从第二冷却风道6把热风排出去，可以确保电机在运行过程中不会发热，提高电机工作效率的同时，还可以提高电机的使用寿命。
采用上述技术方案后，本实用新型有益效果为：它结构简单，安装和拆卸方便，同时可以有效解决电机内部散热的问题，提高电机的使用寿命。
以上所述，仅用以说明本实用新型的技术方案而非限制，本领域普通技术人员对本实用新型的技术方案所做的其它修改或者等同替换，只要不脱离本实用新型技术方案的精神和范围，均应涵盖在本实用新型的权利要求范围当中。

Claims (5)

  1. 离心式压缩机用冷却定子的冷却风道结构，其特征在于：它包含机壳(1)、电机支架(2)、转子(3)、定子(4)、第一冷却风道(5)、第二冷却风道(6)、连接板(7)、螺母(8)，所述定子(4)位于机壳(1)的内部，所述转子(3)位于定子(4)的内侧中间位置，所述第一冷却风道(5)和第二冷却风道(6)均为半圆形构件，第一冷却风道(5)和第二冷却风道(6)的左右两侧对应位置均设置有连接板(7)，第一冷却风道(5)和第二冷却风道(6)包裹在机壳(1)的外侧，且第一冷却风道(5)和第二冷却风道(6)上的连接板(7)相吻合并通过螺母(8)进行锁紧，所述电机支架(2)安装在机壳(1)的底部。
  2. 根据权利要求1所述的离心式压缩机用冷却定子的冷却风道结构，其特征在于：所述的第一冷却风道(5)和第二冷却风道(6)的左右两侧均设置有八个腰形结构孔。
  3. 根据权利要求1所述的离心式压缩机用冷却定子的冷却风道结构，其特征在于：所述的机壳(1)左右两侧的外侧面均对称设置有若干腰形孔(10)。
  4. 根据权利要求3所述的离心式压缩机用冷却定子的冷却风道结构，其特征在于：所述的若干腰形孔(10)的数量为八个，且腰形孔(10)与第一冷却风道(5)和第二冷却风道(6)两侧的腰形结构孔的位置相对应。
  5. 根据权利要求1所述的离心式压缩机用冷却定子的冷却风道结构，其特征在于：所述第一冷却风道(5)、第二冷却风道(6)的内侧分别与机壳(1)之间设置定位销(11)。
PCT/CN2020/077349 2019-12-11 2020-02-29 离心式压缩机用冷却定子的冷却风道结构 WO2021114490A1 (zh)

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