CN111786524A - Oil-cooled intermediate-frequency three-phase asynchronous motor for aviation environment control system - Google Patents
Oil-cooled intermediate-frequency three-phase asynchronous motor for aviation environment control system Download PDFInfo
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- CN111786524A CN111786524A CN202010666033.5A CN202010666033A CN111786524A CN 111786524 A CN111786524 A CN 111786524A CN 202010666033 A CN202010666033 A CN 202010666033A CN 111786524 A CN111786524 A CN 111786524A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/12—Asynchronous induction motors for multi-phase current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/25—Devices for sensing temperature, or actuated thereby
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The application belongs to the field of aviation asynchronous motor design, and particularly relates to an oil-cooled intermediate-frequency three-phase asynchronous motor for an aviation environment control system. The method comprises the following steps: the graphite bearing, rotor subassembly, stator module. According to the motor, the composite shaft is designed into two stepped parts, so that the pressurization and heat dissipation effects of cooling oil in the motor are improved; the temperature signal of the electric winding is output to a system upper computer in real time through a thermistor as a resistance signal, and a power supply is cut off in time according to monitoring of a motor winding temperature rise signal and the condition of overhigh temperature rise, so that the safety of the environment-controlled cooling oil booster pump system is ensured; the first sealing ring, the second sealing ring, the insulating bush, the winding end part encapsulating glue and other structures are completely isolated from the electric structure, so that the insulation resistance value and the working reliability of the motor are ensured. The invention has the advantages of small volume, light weight, simple structure, high reliability, high working efficiency, long service life and relatively low cost, meets the use requirements and is worthy of popularization and application.
Description
Technical Field
The application belongs to the field of aviation asynchronous motor design, and particularly relates to an oil-cooled intermediate-frequency three-phase asynchronous motor for an aviation environment control system.
Background
Currently, in an aviation environmental control system, a low-voltage brush direct-current motor and a high-voltage brushless direct-current motor are mostly adopted as power sources, and an air cooling method is mostly adopted as a cooling method. The motor for the aviation environmental control system needs to meet the requirements of small size, light weight, high efficiency, high working reliability, long service life and the like.
In the prior art, the low-voltage brush direct-current motor and the high-voltage brushless direct-current motor of the aviation environmental control system have certain problems. Wherein, the low pressure has brush direct current motor to exist the problem including: the volume is large, because of using the low-voltage direct-current power supply, under the same electric power, the required current is larger, namely the required sectional area of the armature winding is larger, the volume of other corresponding components is also increased, when inputting the same electric power, the required volume of the motor will be increased; the weight is heavier, and the weight of the motor is increased when the selected materials are the same or close to each other due to the increase of the volume of the motor; the service life is relatively short, because the mechanical commutation is realized by the components such as the armature, the commutator, the electric brush and the like, the components are easy to generate friction heat and generate heat when being electrified due to mechanical friction, even if a self-contained cooling fan is adopted, the heat cannot be dissipated in time, the insulation of an electrified conductor is reduced, and the service life is further shortened; the low-voltage direct-current motor has poor working reliability, electric sparks are easy to generate at the commutation moment when the low-voltage direct-current motor works, the armature insulation is easy to be damaged under the continuous action of the electric sparks, the faults and the damages of components such as a commutator, an electric brush and the like are easy to cause, and the short circuit risk or the open circuit risk of a conducting device is increased. Problems with high voltage brushless dc motors include: the structure is complex, the motor also needs to be provided with a corresponding motor driver, and a sensor for acquiring the position of the rotor also needs to be arranged in the motor body; the starting control is complex, and the starting control of the high-voltage brushless direct-current motor with the position sensor system and the high-voltage brushless direct-current motor without the position sensor system is complex; the reliability is poor, the number of modules and links contained in the system is large, any module component or software fails, and the function of the whole motor system fails; in a high-voltage brushless direct current motor system, a motor body comprises a permanent magnetic material with high cost, a Hall integrated circuit and other position sensors, and a driver comprises a power supply conversion module, a power driving module, a control module and a related software system, so that the application cost is high.
Disclosure of Invention
In order to solve the technical problem, the application provides an oil-cooled intermediate frequency three-phase asynchronous motor for an aviation environment control system, which meets the requirements of small volume, light weight, simple structure, high reliability, long service life and relatively low cost.
The application provides a cold intermediate frequency three-phase asynchronous motor of oil for aviation environmental control system includes:
the device comprises a shell, wherein one end of the shell is detachably provided with a shaft extension end cover, the other end of the shell is detachably provided with a non-shaft extension end cover, a shaft hole is formed in the center of the shaft extension end cover, the shaft extension end cover is provided with an annular first supporting part, the shaft extension end cover is divided into a first inner layer space and a first outer layer space by the first supporting part, the non-shaft extension end cover is provided with an annular second supporting part, and the non-shaft extension end cover is divided into a second inner layer space and a second outer layer space by the second supporting part;
the composite shaft is nested in the shell and provided with an oil cooling channel, the composite shaft comprises a first shaft part and a second shaft part which are both in a step shape, the radius of the first shaft part is sequentially increased from a first end to a second end, the first end of the first shaft part penetrates out of a shaft hole of an end cover of the shaft extension end and is provided with a supercharging impeller, the first end of the first shaft part is provided with an oil outlet, the first end of the second shaft part is connected with the second end of the first shaft part, the radius of the second shaft part is sequentially decreased from the first end to the second end, and the second end of the second shaft part is provided with an oil inlet;
the graphite bearing comprises a first graphite bearing and a second graphite bearing, the first graphite bearing is sleeved on the first shaft part and is accommodated in the first inner layer space, and the second graphite bearing is sleeved on the second shaft part and is accommodated in the second inner layer space;
a rotor assembly crimped onto the composite shaft;
the stator assembly is pressed on the shell and is positioned through the stator positioning screw, the stator assembly is accommodated in the first outer layer space and the second outer layer space and is respectively abutted against a first supporting part of the shaft extension end cover and a second supporting part of the non-shaft extension end cover, the stator assembly comprises an electric winding and a thermistor for detecting the temperature of the electric winding, and a wire harness of the thermistor penetrates through a through hole in the side wall of the shell and is connected with an electric connector arranged outside the shell;
the cooling oil sequentially passes through a gap between the shaft hole of the shaft extension end cover and the composite shaft, a gap between the first graphite bearing and the shaft extension end cover and the composite shaft, the air gap shaft surface of the stator assembly and the rotor assembly, a gap between the second graphite bearing and the non-shaft extension end cover and the composite shaft, and an oil cooling channel of the composite shaft, and finally flows to the supercharging impeller.
Preferably, be provided with the installation department on the outer wall of casing, the installation department is provided with the inner space, electric connector demountable installation be in on the installation department, through-hole department on the casing lateral wall is provided with and is used for thermistor's pencil passes the sleeve, the sleeve holds in the inner space of installation department.
Preferably, a flange connecting structure is arranged on the outer wall of one end of the shell, which is close to the shaft extension end cover.
Preferably, the shaft extension end cover is provided with a flange structure connected with the pump body.
Preferably, the shaft extension end cover and the non-shaft extension end cover are installed on the shell through a plurality of bolts which are uniformly distributed in the circumferential direction.
Preferably, a first end of the first shaft portion of the composite shaft is radially provided with a key groove for mounting the booster impeller, a second end of the first shaft portion is circumferentially provided with a connecting portion, and a first end of the second shaft portion is welded to the connecting portion.
Preferably, the first graphite bearing and the reverse second graphite bearing are both provided with a limit check ring during assembly.
Preferably, the ends of the electrical winding are provided with potting compound.
Preferably, a first sealing ring is arranged at the joint of the stator assembly and the shaft extension end cover, and a second sealing ring is arranged at the joint of the stator assembly and the non-shaft extension end cover.
Preferably, the thermistor is accommodated in the second outer layer space, and an insulating bush is further disposed between the stator assembly and the non-shaft-extension end cover.
According to the oil-cooled intermediate-frequency three-phase asynchronous motor for the aviation environment control system, the composite shaft is designed into two stepped parts, so that the pressurization and heat dissipation effects of cooling oil in the motor are improved; the thermistor used for collecting the winding temperature signal is embedded in the electric winding, the temperature signal of the electric winding is output to a system upper computer in real time as a resistance signal, and the power supply is timely cut off according to monitoring of the motor winding temperature rise signal and the condition of over-temperature rise, so that the safety of the environment-controlled cooling oil booster pump system is ensured.
The novel multifunctional electric heating cooker has the advantages of small size, light weight, simple structure, high reliability, long service life and relatively low cost, and meets the use requirements.
Drawings
Fig. 1 is a schematic overall structure diagram of an oil-cooled intermediate frequency three-phase asynchronous motor for an aviation environment control system.
Fig. 2 is a composite shaft schematic diagram of the oil-cooled intermediate-frequency three-phase asynchronous motor for the aviation environment control system.
The device comprises a shaft extension end cover 1, a first sealing ring 2, potting glue 3, a composite shaft 4, a first shaft part 41, a second shaft part 42, a stator assembly 5, a stator positioning screw 6, a rotor assembly 7, an electric connector 8, a thermistor 9, a second sealing ring 10, an insulating bush 11, a graphite bearing 12, a non-shaft extension end cover 13, a limiting retainer ring 14, a shell 15 and a pressurizing impeller 16.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all embodiments of the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Embodiments of the present application will be described in detail below with reference to the drawings.
The application provides an oil-cooled intermediate frequency three-phase asynchronous motor for an aviation environment control system, which meets the requirements of small volume, light weight, simple structure, high reliability, long service life and relatively low cost.
The structure of an oil-cooled intermediate frequency three-phase asynchronous motor for an aviation environment control system is shown in fig. 1 to 2, and mainly comprises: the housing 15, the composite shaft 4, the graphite bearing 12, the rotor assembly 7 and the stator assembly 5.
Specifically, one end of the shell 15 is detachably provided with a shaft extension end cover 1, and the other end is detachably provided with a non-shaft extension end cover 13, wherein the center of the shaft extension end cover 1 is provided with a shaft hole for the composite shaft 4 to pass through, the shaft extension end cover 1 is provided with an annular first supporting part, the shaft extension end cover 1 is divided into a first inner layer space and a first outer layer space by the first supporting part, the non-shaft extension end cover 13 is provided with an annular second supporting part, and the non-shaft extension end cover 13 is divided into a second inner layer space and a second outer layer space by the second supporting part;
the composite shaft 4 is nested inside the shell 15, an oil cooling channel is formed in the center of the composite shaft 4, the composite shaft 4 comprises a first shaft part 41 and a second shaft part 42 which are both in a step shape, the radius of the first shaft part 41 is sequentially increased from a first end to a second end, the first end of the first shaft part 41 penetrates through a shaft hole of the shaft extension end cover 1 and is provided with a booster impeller 16, an oil outlet is formed in the end along the axial direction, the first end of the second shaft part 42 is connected with the second end of the first shaft part 41, the radius of the second shaft part 42 is sequentially decreased from the first end to the second end, the second end of the second shaft part 42 is axially provided with an oil inlet, and a preset gap is formed between the second end of the second shaft part 42 and the non-shaft extension;
the graphite bearing 12 comprises a first graphite bearing and a second graphite bearing, the first graphite bearing is sleeved on the first shaft part 41 and accommodated in the first inner layer space, the second graphite bearing is sleeved on the second shaft part 42 and accommodated in the second inner layer space, cooling oil circulation gaps are reserved between the first graphite bearing and the shaft extension end cover 1 and between the first graphite bearing and the composite shaft 4, and cooling oil circulation gaps are also reserved between the second graphite bearing and the non-shaft extension end cover 13 and between the second graphite bearing and the composite shaft 4;
the rotor assembly 7 comprises structures such as rotor punching sheets and rotor end rings, and the rotor assembly 7 is pressed on the composite shaft 4;
the stator assembly 5 is pressed on the shell 15 and is positioned by a stator positioning screw 6 on the side wall of the shell 15, the stator assembly 5 is accommodated in a first outer layer space and a second outer layer space and is respectively abutted against a first supporting part of the shaft extension end cover 1 and a second supporting part of the non-shaft extension end cover 13, the stator assembly 5 comprises an electric winding and a thermistor 9 for detecting the temperature of the electric winding, and a wire harness of the thermistor 9 passes through a through hole on the side wall of the shell 15 and is connected with an electric connector 8 arranged outside the shell 15;
the application discloses an oil cooling intermediate frequency three-phase asynchronous motor for aviation environmental control system forms following cooling circuit through above-mentioned structure: the cooling oil sequentially passes through a gap between the shaft hole of the shaft extension end cover 1 and the composite shaft 4, a gap between the first graphite bearing and the shaft extension end cover 1 and the composite shaft 4, the air gap shaft surface of the stator assembly 5 and the rotor assembly 7, a gap between the second graphite bearing and the non-shaft extension end cover 13 and the composite shaft 4, and an oil cooling channel of the composite shaft 4, and finally flows to the supercharging impeller 16.
In some alternative embodiments, a mounting portion is provided on an outer wall of the housing 15, the mounting portion is provided with an inner space, the electrical connector 8 is detachably mounted on the mounting portion, and a sleeve for passing a wire harness of the thermistor 9 is provided at a through hole on a side wall of the housing 15, and the sleeve is accommodated in the inner space of the mounting portion. Advantageously, in this embodiment, a flange connection structure is provided on the outer wall of the end of the housing 15 close to the shaft end cover 1, so as to facilitate connection with other structures. It can be understood that, in this embodiment, an aluminum alloy material with good mechanical strength and light weight is selected, so that the strength can be ensured, and the design weight of the motor can be reduced.
In some alternative embodiments, the shaft end cover 1 is designed with a flange structure connected with the pump body, so that additional connecting components can be reduced. In this embodiment, the shaft-extension end cover 1 and the non-shaft-extension end cover 1 are both mounted on the housing 15 by a plurality of bolts uniformly distributed in the circumferential direction.
The composite shaft 4 in the application is composed of two parts, as shown in fig. 2, a stepped pressurizing oil cooling structure is designed at a first shaft part, an oil outlet is designed at a first end of the first shaft part, wherein the oil outlet is mainly used for pressurizing cooling oil and reducing weight of a motor, and is used for connecting mechanical loads such as a motor-driven pressurizing impeller 16 and the like, spraying the pressurized cooling oil, and finally realizing the pressurizing and heat dissipation process of the cooling oil in the motor. The second end of second axle portion is close to the end face design and has the oil inlet that is used for the cooling oil to get into, utilizes this structure can realize pressure boost and cooling action. Meanwhile, the composite shaft 4 also has the functions of fixing the graphite bearing 12, supporting the weight of the whole motor and connecting the components such as the rotor component 7, the non-shaft-extension end cover 13, the shaft-extension end cover 1 and the like. In some alternative embodiments, a first end of the first shaft portion of the composite shaft 4 is radially provided with a key groove for mounting the booster impeller 16, a second end of the first shaft portion is circumferentially provided with a connecting portion, and a first end of the second shaft portion is welded to the connecting portion.
In some alternative embodiments, the first graphite bearing and the second graphite bearing are each provided with a retainer ring 14 when assembled. The graphite bearing 12 has the characteristics of high mechanical strength, good corrosion resistance, long service life and the like, and can greatly prolong the service life of the motor.
In some alternative embodiments, the ends of the electrical windings of the stator assembly 5 are provided with potting compound 3. In this embodiment, a first seal ring 2 is disposed at a joint of the stator assembly 5 and the shaft extension end cap 1, and a second seal ring 10 is disposed at a joint of the stator assembly 5 and the non-shaft extension end cap 13. Through offering the round mounting groove along circumference on the first supporting part of the end cover 1 is stretched to the axle and the second supporting part of the end cover 13 is stretched to the non-axle respectively, install two sealing washers, first sealing washer 2 and second sealing washer 10 mainly used separation cooling oil get into the electric part of motor, guarantee the insulation reliability of motor.
Advantageously, in this embodiment, the thermistor 9 is accommodated in the second outer space, and an insulating bush 11 is further disposed between the stator assembly 5 and the non-axial end cap 13. The insulation bush 11 has the function of isolating the stator assembly winding from the cooling oil, so that the electrical winding in the stator assembly 5 is prevented from being corroded by the cooling oil, the insulation resistance is reduced, and even a short-circuit fault occurs. When the motor of the motor works, the thermistor 9 for detecting the winding temperature outputs the temperature signal of the electric winding to the upper computer of the system in real time as a resistance signal, and the motor is used for monitoring the temperature rise signal of the motor winding and timely cutting off the power supply when the temperature rise is over-high, so that the safety of a booster pump system is ensured.
Compared with the existing oil-cooled medium-frequency three-phase asynchronous motor, the scheme of the invention improves the supercharging and heat dissipation effects of cooling oil in the motor by designing the composite shaft 4 into two parts in a step shape; the thermistor 9 for collecting winding temperature signals is embedded in the electric winding, the temperature signals of the electric winding are output to a system upper computer in real time as resistance signals, and a power supply is timely cut off according to monitoring of motor winding temperature rise signals and the situation of overhigh temperature rise, so that the safety of the environment-controlled cooling oil booster pump system is ensured; in the whole circulation process, the cooling oil is completely isolated from the electrical structure of the winding through the structures such as the first sealing ring 2, the second sealing ring 10, the insulating bush 11, the winding end encapsulation glue 3 and the like, so that the insulation resistance value and the working reliability of the motor are ensured. The invention has the advantages of small volume, light weight, simple structure, high reliability, high working efficiency, long service life and relatively low cost, meets the use requirements and is worthy of popularization and application.
Claims (10)
1. The utility model provides a cold intermediate frequency three-phase asynchronous motor of oil for aviation environmental control system which characterized in that includes:
the device comprises a shell (15), wherein one end of the shell (15) is detachably provided with a shaft extension end cover (1), the other end of the shell is detachably provided with a non-shaft extension end cover (13), a shaft hole is formed in the center of the shaft extension end cover (1), the shaft extension end cover (1) is provided with an annular first supporting part, the shaft extension end cover (1) is divided into a first inner layer space and a first outer layer space by the first supporting part, the non-shaft extension end cover (13) is provided with an annular second supporting part, and the non-shaft extension end cover (13) is divided into a second inner layer space and a second outer layer space by the second supporting part;
the composite shaft (4) is nested inside the shell (15), an oil cooling channel is arranged on the composite shaft (4), the composite shaft (4) comprises a first shaft part (41) and a second shaft part (42) which are both step-shaped, the radius of the first shaft part (41) is sequentially increased from a first end to a second end, the first end of the first shaft part (41) penetrates out of a shaft hole of the shaft extension end cover (1) and is provided with a supercharging impeller (16), an oil outlet is formed in the end of the first shaft part, the first end of the second shaft part (42) is connected with the second end of the first shaft part (41), the radius of the second shaft part (42) is sequentially decreased from the first end to the second end, and an oil inlet is formed in the second end of the second shaft part (42);
a graphite bearing (12) including a first graphite bearing fitted over the first shaft portion (41) and accommodated in the first inner space, and a second graphite bearing fitted over the second shaft portion (42) and accommodated in the second inner space;
a rotor assembly (7), the rotor assembly (7) being crimped onto the composite shaft (4);
the stator assembly (5) is pressed on the shell (15) in a pressing mode and is positioned through the stator positioning screw (6), the stator assembly (5) is accommodated in the first outer layer space and the second outer layer space and is respectively abutted with a first supporting part of the shaft extension end cover (1) and a second supporting part of the non-shaft extension end cover (13), the stator assembly (5) comprises an electric winding and a thermistor (9) for detecting the temperature of the electric winding, and a wire harness of the thermistor (9) penetrates through a through hole in the side wall of the shell (15) and is connected with an electric connector (8) arranged outside the shell (15);
the cooling oil sequentially passes through a gap between the shaft hole of the shaft extension end cover (1) and the composite shaft (4), a gap between the first graphite bearing and the shaft extension end cover (1) and the composite shaft (4), an air gap shaft surface of the stator assembly (5) and the rotor assembly (7), a gap between the second graphite bearing and the non-shaft extension end cover (13) and the composite shaft (4), and an oil cooling channel of the composite shaft (4), and finally flows to the supercharging impeller (16).
2. The oil-cooled intermediate frequency three-phase asynchronous motor for the aviation environment control system as claimed in claim 1, wherein an installation part is provided on an outer wall of the housing (15), the installation part is provided with an internal space, the electric connector (8) is detachably installed on the installation part, a sleeve for a wire harness of the thermistor (9) to pass through is provided at a through hole on a side wall of the housing (15), and the sleeve is accommodated in the internal space of the installation part.
3. The oil-cooled intermediate frequency three-phase asynchronous motor for the aviation environment control system according to claim 2, wherein a flange connection structure is arranged on the outer wall of one end of the shell (15) close to the shaft extension end cover (1).
4. The oil-cooled intermediate frequency three-phase asynchronous motor for the aviation environment control system according to claim 1, wherein the shaft extension end cover (1) is provided with a flange structure connected with a pump body.
5. The oil-cooled intermediate-frequency three-phase asynchronous motor for the aviation environment control system according to claim 4, wherein the shaft extension end cover (1) and the non-shaft extension end cover (1) are mounted on the shell (15) through a plurality of bolts uniformly distributed in the circumferential direction.
6. The oil-cooled intermediate frequency three-phase asynchronous motor for the aviation environment control system according to claim 1, wherein a first end of the first shaft portion of the composite shaft (4) is radially provided with a key groove for mounting the booster impeller (16), a second end of the first shaft portion is circumferentially provided with a connecting portion, and a first end of the second shaft portion is welded to the connecting portion.
7. The oil-cooled intermediate-frequency three-phase asynchronous motor for an aviation environment control system as claimed in claim 1, wherein the first graphite bearing and the second graphite bearing are provided with a limit stop ring (14) when assembled.
8. Oil-cooled medium-frequency three-phase asynchronous motor for an airborne environment control system according to claim 1, characterized in that the ends of the electrical windings are provided with potting compound (3).
9. The oil-cooled intermediate frequency three-phase asynchronous motor for the aviation environment control system according to claim 1, wherein a first sealing ring (2) is arranged at the joint of the stator assembly (5) and the shaft extension end cover (1), and a second sealing ring (10) is arranged at the joint of the stator assembly (5) and the non-shaft extension end cover (13).
10. The oil-cooled intermediate frequency three-phase asynchronous motor for an aviation environment control system according to claim 9, wherein the thermistor (9) is accommodated in the second outer space, and an insulating bush (11) is further provided between the stator assembly (5) and the non-shaft-extension end cap (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010666033.5A CN111786524B (en) | 2020-07-12 | 2020-07-12 | Oil-cooled intermediate-frequency three-phase asynchronous motor for aviation environment control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010666033.5A CN111786524B (en) | 2020-07-12 | 2020-07-12 | Oil-cooled intermediate-frequency three-phase asynchronous motor for aviation environment control system |
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| CN111786524A true CN111786524A (en) | 2020-10-16 |
| CN111786524B CN111786524B (en) | 2023-02-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114244022A (en) * | 2021-12-13 | 2022-03-25 | 陕西航空电气有限责任公司 | Motor with stator winding isolated from conductive cooling liquid |
| WO2023031280A1 (en) * | 2021-09-06 | 2023-03-09 | Mahle International Gmbh | Electric motor |
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| CN109494920A (en) * | 2018-10-19 | 2019-03-19 | 陕西航空电气有限责任公司 | Aviation pump motor movable sealing structure and aviation pump motor |
| CN110912368A (en) * | 2019-12-06 | 2020-03-24 | 陕西航空电气有限责任公司 | Oil-cooled high-pressure brushless direct-current motor for aviation fuel system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109494920A (en) * | 2018-10-19 | 2019-03-19 | 陕西航空电气有限责任公司 | Aviation pump motor movable sealing structure and aviation pump motor |
| CN110912368A (en) * | 2019-12-06 | 2020-03-24 | 陕西航空电气有限责任公司 | Oil-cooled high-pressure brushless direct-current motor for aviation fuel system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023031280A1 (en) * | 2021-09-06 | 2023-03-09 | Mahle International Gmbh | Electric motor |
| CN114244022A (en) * | 2021-12-13 | 2022-03-25 | 陕西航空电气有限责任公司 | Motor with stator winding isolated from conductive cooling liquid |
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| CN111786524B (en) | 2023-02-28 |
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