CN111987865A - Ultra-high speed motor rotor temperature testing device and ultra-high speed motor using same - Google Patents
Ultra-high speed motor rotor temperature testing device and ultra-high speed motor using same Download PDFInfo
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- CN111987865A CN111987865A CN202010724892.5A CN202010724892A CN111987865A CN 111987865 A CN111987865 A CN 111987865A CN 202010724892 A CN202010724892 A CN 202010724892A CN 111987865 A CN111987865 A CN 111987865A
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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
Abstract
The invention provides a temperature test device for a rotor of an ultra-high speed motor and the ultra-high speed motor using the same, wherein the ultra-high speed motor comprises a stator and a rotor, a central hole is axially processed in the rotor, at least part of the length of the central hole corresponds to that of the stator, and a taking and placing opening is formed at one end part of the rotor by the central hole; a temperature measuring rod is inserted into the central hole from the taking and placing opening and is detachably connected with the rotor; and irreversible temperature indicating materials are fixed on the temperature measuring rod corresponding to the length part of the stator. Compared with the prior art, the temperature measuring device greatly overcomes the problems of difficult and inaccurate measurement of the rotor temperature, has a simple structure, is easy to realize, can replace irreversible temperature indicating materials for use, and effectively makes up for the defects and shortcomings of the temperature measuring mode of the rotor of the ultra-high speed motor.
Description
Technical Field
The invention relates to a temperature measuring device for a rotor of an ultra-high-speed motor.
Background
The ultra-high speed motor is usually applied to a compressor, the rotating speed exceeds 10000rpm, a rotor is in a slender shape, the volume of the high speed motor is small, however, the loss in a unit machine body is high, particularly, the friction loss of the surface of the rotor and the eddy current loss of a fastening layer are large when the rotor rotates at a high speed, and the highest temperature of the rotor when the motor works needs to be accurately measured to ensure the safe operation of a compressor system.
At present, the rotor temperature measurement method is few, the average temperature of the rotor is mostly judged in an indirect judgment mode, and a specific over-temperature point cannot be determined; the infrared non-contact temperature measurement technology is adopted, the influence of an internal magnetic field and an electric field is caused, the measured data has larger deviation, the working temperature of the infrared non-contact temperature measurement technology is generally 50-90 ℃, the temperature of the motor exceeds the limit, the metal thermopile or semiconductor infrared temperature measurement cannot be directly used in the motor, and the infrared rays can only be led out through the combination of the optical fibers and the lens and transmitted to the infrared temperature measurement device.
Because the hypervelocity motor space is narrow and small, and the rotational speed is higher, hardly with infrared temperature sensor direct measurement rotor temperature, especially do not have the compressor that the load axle was drawn forth, rotor temperature is more difficult to measure, consequently, how to provide a motor rotor temperature measuring device, can make things convenient for the accurate rotor highest temperature that measures, has become the problem that the hypervelocity motor research and development waited for solution urgently.
Disclosure of Invention
Aiming at the problems in the prior art, the invention designs the ultra-high speed motor rotor temperature measuring device, the rotor comprising the measuring device and the ultra-high speed motor, which can effectively reflect the highest temperature ever appearing in the rotor, provide objective basis for the rotor temperature test and effectively make up the defects of the ultra-high speed motor temperature measuring mode.
In order to achieve the purpose, the invention adopts the technical scheme that:
a temperature testing device for a rotor of an ultra-high speed motor, the ultra-high speed motor comprises a stator and a rotor, and is characterized in that: a central hole is axially processed in the rotor, at least part of the length of the central hole corresponds to that of the stator, and a taking and placing opening is formed at one end part of the rotor by the central hole;
a temperature measuring rod is inserted into the central hole from the taking and placing opening and is detachably connected with the rotor;
and irreversible temperature indicating materials are fixed on the temperature measuring rod corresponding to the length part of the stator.
The ultra-high speed motor rotor temperature testing device comprises: the temperature measuring rod is provided with a metal cylindrical rod body, and an irreversible temperature indicating material coating is coated on the outer ring surface of the metal cylindrical rod body.
The ultra-high speed motor rotor temperature testing device comprises: the temperature measuring rod is provided with a metal cylinder, and an irreversible temperature indicating material rod body is inserted into the metal cylinder along the axial direction.
The ultra-high speed motor rotor temperature testing device comprises: and an irreversible temperature indicating material coating is coated on the outer ring surface of the metal cylinder.
The ultra-high speed motor rotor temperature testing device comprises: the thickness of the irreversible temperature indicating material coating is 0.5-1 mm.
The ultra-high speed motor rotor temperature testing device comprises: the temperature measuring rod is in matched connection with the taking and placing opening of the rotor through threads.
The ultra-high speed motor rotor temperature testing device comprises: the outer end of the temperature measuring rod is integrally connected with a bolt head, and the bolt head is connected with the end part of the rotor with the taking and placing opening through a double-stack self-locking washer.
An ultra-high speed motor is characterized by comprising any one of the ultra-high speed motor rotor temperature testing devices.
Compared with the prior art, the temperature measuring device greatly overcomes the problems of difficult and inaccurate measurement of the rotor temperature, has a simple structure, is easy to realize, can replace irreversible temperature indicating materials for use, and effectively makes up for the defects and shortcomings of the temperature measuring mode of the rotor of the ultra-high speed motor.
Drawings
FIG. 1 is a schematic structural diagram of a device for measuring the temperature of a rotor of an ultra-high speed motor according to the present invention;
FIG. 2 is a schematic view of a temperature probe coated with an irreversible temperature indicating material;
FIG. 3 is a schematic view showing the structure of a temperature probe having an irreversible temperature probe built therein.
Description of reference numerals: a rotor 1; a first-stage turbine 2; a high-speed bearing 3; a stator coil 4; a housing 5; a stator core 6; a coaxial inner fan 7; a secondary turbine 8; a temperature measuring rod 9; a metal cylindrical rod 91; an irreversible temperature indicating material coating 92; a metal cylindrical body 93; an irreversible temperature indicating material rod 94; a double stack self locking washer 10; the bolt head 11; an external thread 12; a central hole 13.
Detailed Description
As shown in fig. 1, the structural schematic diagram of the device for testing the rotor temperature of the ultra-high speed motor provided by the present invention is that a stator core 6 having a stator coil 4 is fixed on the inner wall of a casing 5, a rotor 1 located at the center of the stator core 6 is further installed in the casing 5 through a high speed bearing 3, two ends of the rotor 1 penetrate through the casing 5 and are respectively connected with a first-stage turbine 2 and a second-stage turbine 8, and a coaxial inner fan 7 fixed on the rotor 1 is further arranged in the casing 5 for heat dissipation;
in order to obtain the maximum working temperature of the rotor 1, the invention is provided with a central hole 13 axially processed in the rotor 1, the central hole 13 at least covers the length corresponding to the stator core 6, and the central hole 13 forms an access opening at one end part of the rotor 1 and an internal thread (not shown) at the access opening;
the invention is also provided with a temperature measuring rod 9, the temperature measuring rod 9 is placed into a central hole 13 of the rotor 1 from the taking and placing opening until the length of the stator core 6 is covered, and the outer end of the temperature measuring rod 9 is also provided with an external thread 12 to form matching connection with the internal thread at the taking and placing opening; in a further structure, the outer end of the temperature measuring rod 9 is integrally connected with a bolt head 11, a hexagon socket is formed on the bolt head 11 so as to facilitate wrench operation, the bolt head 11 is connected with the end part of the rotor 1 with the taking and placing opening through a double-stack self-locking washer 10, the temperature measuring rod 9 can be effectively prevented from loosening, and the replacement is easy
As shown in FIG. 2, the structure of the temperature measuring rod coated with the irreversible temperature indicating material is schematically shown, and the temperature measuring rod is provided with a metal cylindrical rod 91, and the outer ring surface of the metal cylindrical rod 91 is coated with the irreversible temperature indicating material coating 92 with the thickness of 0.5-1 mm.
As shown in fig. 3, the temperature measuring rod having an irreversible temperature indicating rod built therein is schematically configured to have a metal cylindrical body 93, and an irreversible temperature indicating material rod 94 is axially inserted into the metal cylindrical body 93.
In order to obtain more accurate detection results, the two thermometers may be combined by coating the irreversible temperature indicating material 92 having a thickness of 0.5 to 1 mm on the outer circumferential surface of the metal cylinder 93 and inserting the irreversible temperature indicating material rod 94 in the metal cylinder 93 in the axial direction.
The using process of the invention is as follows: and (3) installing the temperature measuring rod 9 in place, then fully working the ultra-high speed motor, taking out the temperature measuring rod 9 after the work is finished, and observing the color of the irreversible temperature indicating material coating 92 or the irreversible temperature indicating material rod body 94 to measure the highest temperature in the rotor 1. The temperature measuring rod 9 after being used can be convenient for next detection by replacing the irreversible temperature indicating material coating 92 or the irreversible temperature indicating material rod body 94.
The temperature testing device for the ultra-high speed motor rotor can be applied to the existing ultra-high speed motor.
The basic structure and application method of the present invention are described above. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (8)
1. A temperature testing device for a rotor of an ultra-high speed motor, the ultra-high speed motor comprises a stator and a rotor, and is characterized in that: a central hole is axially processed in the rotor, at least part of the length of the central hole corresponds to that of the stator, and a taking and placing opening is formed at one end part of the rotor by the central hole;
a temperature measuring rod is inserted into the central hole from the taking and placing opening and is detachably connected with the rotor;
and irreversible temperature indicating materials are fixed on the temperature measuring rod corresponding to the length part of the stator.
2. The ultra high speed motor rotor temperature test apparatus according to claim 1, wherein: the temperature measuring rod is provided with a metal cylindrical rod body, and an irreversible temperature indicating material coating is coated on the outer ring surface of the metal cylindrical rod body.
3. The ultra high speed motor rotor temperature test apparatus according to claim 1, wherein: the temperature measuring rod is provided with a metal cylinder, and an irreversible temperature indicating material rod body is inserted into the metal cylinder along the axial direction.
4. The ultra high speed motor rotor temperature test apparatus according to claim 3, wherein: and an irreversible temperature indicating material coating is coated on the outer ring surface of the metal cylinder.
5. The ultra high speed motor rotor temperature test apparatus according to claim 2 or 4, wherein: the thickness of the irreversible temperature indicating material coating is 0.5-1 mm.
6. The ultra high speed motor rotor temperature test apparatus according to claim 1, wherein: the temperature measuring rod is in matched connection with the taking and placing opening of the rotor through threads.
7. The ultra high speed motor rotor temperature test apparatus according to claim 6, wherein: the outer end of the temperature measuring rod is integrally connected with a bolt head, and the bolt head is connected with the end part of the rotor with the taking and placing opening through a double-stack self-locking washer.
8. An ultra high speed motor having an ultra high speed motor rotor temperature test apparatus as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010724892.5A CN111987865A (en) | 2020-07-24 | 2020-07-24 | Ultra-high speed motor rotor temperature testing device and ultra-high speed motor using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010724892.5A CN111987865A (en) | 2020-07-24 | 2020-07-24 | Ultra-high speed motor rotor temperature testing device and ultra-high speed motor using same |
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| Publication Number | Publication Date |
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| CN111987865A true CN111987865A (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010724892.5A Pending CN111987865A (en) | 2020-07-24 | 2020-07-24 | Ultra-high speed motor rotor temperature testing device and ultra-high speed motor using same |
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| Country | Link |
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| CN (1) | CN111987865A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114884280A (en) * | 2022-04-28 | 2022-08-09 | 东方电气集团东方电机有限公司 | Rotor coil temperature measuring device |
| CN116633087A (en) * | 2023-06-06 | 2023-08-22 | 北京鼎昱晨星技术服务有限公司 | Motor shaft end temperature test sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853929A (en) * | 2012-07-19 | 2013-01-02 | 德州恒力电机有限责任公司 | Measuring device and method of operation temperature of motor bearing |
| CN204575221U (en) * | 2015-03-31 | 2015-08-19 | 浙江大学 | For rotor temperature rise measure in real time hollow coaxial to dragging motor experimental bench |
| CN106918405A (en) * | 2017-04-20 | 2017-07-04 | 国网辽宁省电力有限公司抚顺供电公司 | Organic irreversible temperature indicating device of color variable |
| CN206698069U (en) * | 2017-05-09 | 2017-12-01 | 合肥巨一动力系统有限公司 | A kind of motor rotor magnetic steel real-time temperature |
-
2020
- 2020-07-24 CN CN202010724892.5A patent/CN111987865A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853929A (en) * | 2012-07-19 | 2013-01-02 | 德州恒力电机有限责任公司 | Measuring device and method of operation temperature of motor bearing |
| CN204575221U (en) * | 2015-03-31 | 2015-08-19 | 浙江大学 | For rotor temperature rise measure in real time hollow coaxial to dragging motor experimental bench |
| CN106918405A (en) * | 2017-04-20 | 2017-07-04 | 国网辽宁省电力有限公司抚顺供电公司 | Organic irreversible temperature indicating device of color variable |
| CN206698069U (en) * | 2017-05-09 | 2017-12-01 | 合肥巨一动力系统有限公司 | A kind of motor rotor magnetic steel real-time temperature |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114884280A (en) * | 2022-04-28 | 2022-08-09 | 东方电气集团东方电机有限公司 | Rotor coil temperature measuring device |
| CN116633087A (en) * | 2023-06-06 | 2023-08-22 | 北京鼎昱晨星技术服务有限公司 | Motor shaft end temperature test sensor |
| CN116633087B (en) * | 2023-06-06 | 2023-11-24 | 北京鼎昱晨星技术服务有限公司 | Motor shaft end temperature test sensor |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20211013 Address after: Room 101, 1f, building 5, yard 9, Fengyuan street, Daxing District, Beijing 100162 Applicant after: BEIJING WENLI TECH Co.,Ltd. Address before: 527326 Building 2, area o, Foshan (Yunfu) industrial transfer park, Silao Town, Yuncheng district, Yunfu City, Guangdong Province Applicant before: Steady Power (Guangdong) Technology Co.,Ltd. |
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Effective date of registration: 20220208 Address after: 527326 Building 2, area o, Foshan (Yunfu) industrial transfer park, Silao Town, Yuncheng district, Yunfu City, Guangdong Province Applicant after: Steady Power (Guangdong) Technology Co.,Ltd. Address before: Room 101, 1f, building 5, yard 9, Fengyuan street, Daxing District, Beijing 100162 Applicant before: BEIJING WENLI TECH Co.,Ltd. |
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Application publication date: 20201124 |
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