CN106772034A - Cheat buried deep cooling motor pattern experimental provision and tested motor temperature rise computational methods - Google Patents
Cheat buried deep cooling motor pattern experimental provision and tested motor temperature rise computational methods Download PDFInfo
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- CN106772034A CN106772034A CN201611115810.7A CN201611115810A CN106772034A CN 106772034 A CN106772034 A CN 106772034A CN 201611115810 A CN201611115810 A CN 201611115810A CN 106772034 A CN106772034 A CN 106772034A
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- deep cooling
- resistance
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- liquid nitrogen
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
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Abstract
The invention discloses hole buried deep cooling motor pattern experimental provision and tested motor temperature rise computational methods, described device includes load, elevating mechanism, shaft coupling, cryogenic system and control test equipment, described load is arranged on elevating mechanism using vertical mode, and described cryogenic system is arranged in melt pit；Tested motor is vertical in cryogenic system using bottom fixed form.Described cryogenic system includes liquid nitrogen container, liquid nitrogen and the insulation shell of resistance to deep cooling.Using it is an advantage of the invention that not being related to the sealing of liquid nitrogen, energy loss caused by sealing is taken when therefore without horizontal installation to prevent liquid nitrogen from being flowed out from shaft extension, can accurately measure the efficiency and every technical parameter of motor, test accuracy is equal to conventional motor type approval test platform, can be effectively prevented from due to the potential threat that low temperature liquid nitrogen leakage is caused to human body.The present invention solves the measurement problem of temperature rise under cryogenic using the resistance of the tested motor of power line measurement of tested motor.
Description
Technical field
The present invention relates to technical field of motors, particularly a kind of buried deep cooling motor pattern experimental provision in hole.
Background technology
The type approval test of motor contains many projects, such as no-load current, open circuit loss, efficiency, temperature rise, starting torque,
Torque capacity etc..The detection of these projects, needs and actually used operating mode is same or like, it is impossible to have too big difference, this is right
For common electric machine, general motor experiment station is just entirely capable of meeting and requires.But for deep cooling motor, due to temperature in use (-
Less than 100 DEG C) room temperature is significantly less than, the resistance of machine winding has had a very large change, and is such as also surveyed in normal temperature environment
If examination, the result that it is obtained can be with actual conditions substantial deviation, and this just loses the meaning of experiment.
Further, the temperature rise test of conventional motor, is with the surface temperature of thermometer measure motor, when motor surface temperature exists
When change in 1 hour is no more than 1K, can assert that the temperature rise of motor has reached stable state, at this moment again by resistance measurement electricity
The resistance change of machine converses the temperature rise of motor, that is, the electric-resistivity method often said.Can this method be not particularly suited for deep cooling electricity
Machine because deep cooling motor at the trial cannot measurement motor surface temperature.Even if by the method for pre-buried temperature element, due to
The temperature of liquid nitrogen is too low, and temperature element there is also the risk that cannot accurately measure.
Fig. 1 is the mode standard of domestic each Motor Test Station, and it includes shaft coupling 13, load 18, test platform 19
With control test equipment, load 18 and be connected with tested motor 12 by shaft coupling 13.Test equipment includes heavy current cabinet 1, operating desk
2nd, electrical power transmitter 3, power frequency transmitter 4, power factor transmitter 5, current transducer 6, voltage transmitter 7, three-phase current
Transformer 8, threephase potential transformer 9, resistance measuring instrument 10, environment and iron core temperature measuring device 11, torque rotary speed capture card 14,
Torquemeter 15, torque rotary speed sensor 16, locked-rotor device 17 and Loading Control cabinet 20.It can be seen from figure 1 that these equipment and instrument
Device etc. is respectively mounted on the ground, and motor, using horizontal type structure, and is not carried out the device of deep cooling in test.At present in electricity
It is also that (this can't influence vertical using horizontal installation when type approval test is carried out even vertical installation motor in machine industry
The test result of motor is installed) mode realize.This causes that the type approval test of deep cooling motor cannot utilize existing experiment station
Carry out.If carrying out the test of deep cooling motor using current experiment station, following 2 problems are primarily present：
1st, without cryogenic system, motor cannot realize the operation under cryogenic；
Current Motor Test Station, when motor is tested, environment temperature is room temperature, i.e., 20 DEG C or so, even if
Motor actual condition temperature due to difference variation less, will not produce substantial shadow not in the range of this to test result
Ring.But, under deep cooling (less than -100 DEG C) environment, due to too big with the temperature difference of room temperature, the environment temperature in laboratory can not
The test condition of deep cooling motor is met, so cryogenic system must be possessed.
Even if the 2, existing experiment station increases cryogenic system, the accurate test of deep cooling motor cannot be also realized；
Because realizing deep cooling, it is necessary to there is liquid nitrogen, and horizontal structure must realize the sealing of liquid nitrogen.Do not say low temperature seal
Material type selecting is difficult, and the measurement error that single energy loss produced with regard to sealing device is brought cannot just ensure the efficiency of motor, turn
The authenticity of the critical datas such as square, electric current.
The content of the invention
To solve the above mentioned problem that prior art is present, the present invention will design a set of deep cooling test environment that can simulate simultaneously can essence
The buried deep cooling motor pattern experimental provision in hole and tested motor temperature rise computational methods of true measurement motor parameter.
To achieve these goals, technical scheme is as follows：Buried deep cooling motor pattern experimental provision is cheated, including
Load, elevating mechanism, shaft coupling, cryogenic system and control test equipment, described load are arranged on lifting using vertical mode
In mechanism, elevating mechanism is installed on the ground, and described cryogenic system is arranged in melt pit；Tested motor uses bottom fixation side
Formula is vertical in cryogenic system, and tested motor is connected by shaft coupling with load, and described control test equipment is arranged on
On ground.
Further, described cryogenic system includes liquid nitrogen container, liquid nitrogen and the insulation shell of resistance to deep cooling, in described liquid nitrogen container
Filling liquid nitrogen, is the insulation shell of resistance to deep cooling outside liquid nitrogen container.
Further, the described insulation shell of resistance to deep cooling includes that the base plate and resistance to deep cooling of the hard insulating material of resistance to deep cooling are soft
The side plate of insulation material.
Further, the described hard insulating material of resistance to deep cooling is Deltherm 68890 or Pamitherm 41140；Institute
The blanket type insulation of resistance to deep cooling stated is mineral wool.
The tested motor temperature rise computational methods of buried deep cooling motor pattern experimental provision are cheated, is comprised the following steps：
Using the resistance of the tested motor of power line measurement of tested motor, when the resistance of tested motor fluctuated in 1 hour
When amplitude is no more than the 0.4% of Resistance standard value, assert that temperature rise reaches stable state, by the tested motor for calculating the time period
Resistance value is to converse the temperature rise of tested motor.
Compared with prior art, the invention has the advantages that：
1st, tested motor of the invention uses vertical mounting means, and upwards, tested motor is directly immersed in liquid nitrogen shaft extension.
More horizontally-mounted advantage is that the liquid nitrogen for realizing deep cooling will not flow out, therefore without sealing.Using it is an advantage of the invention that
It is not related to the sealing of liquid nitrogen, therefore takes energy caused by sealing during without horizontal installation to prevent liquid nitrogen from being flowed out from shaft extension
Amount loss, can accurately measure the efficiency and every technical parameter of motor, and test accuracy is equal to conventional motor type approval test platform.Together
When, buried vertical mounting structure being cheated, can be effectively prevented from due to the potential threat that low temperature liquid nitrogen leakage is caused to human body.This hair
The bright domestic blank for having filled up the technical field.
2nd, the present invention increases a program for resistance monitor in real time on test procedure, is surveyed using the power line of tested motor
The resistance of the tested motor of amount, solves the measurement problem of temperature rise under cryogenic, reaches the temperature measurement precision of deep cooling motor
The certainty of measurement of conventional motor temperature rise.
Brief description of the drawings
Fig. 1 is the experimental provision schematic diagram of prior art.
Fig. 2 is experimental provision schematic diagram of the invention.
In figure：1st, heavy current cabinet, 2, operating desk, 3, electrical power transmitter, 4, power frequency transmitter, 5, power factor transmitter,
6th, current transducer, 7, voltage transmitter, 8, threephase current transformer, 9, threephase potential transformer, 10, resistance measuring instrument, 11,
Environment and iron core temperature measuring device, 12, tested motor, 13, shaft coupling, 14, torque rotary speed capture card, 15, torquemeter, 16, turn
Square speed probe, 17, locked-rotor device, 18, load, 19, test platform, 20, Loading Control cabinet, 21, elevating mechanism, 22, liquid
Nitrogen tank, 23, liquid nitrogen, 24, base plate, 25, side plate.
Specific embodiment
The present invention is further described through below in conjunction with the accompanying drawings.As shown in Fig. 2 cheating buried deep cooling motor type experiment
Device, including load 18, elevating mechanism 21, shaft coupling 13, cryogenic system and control test equipment, described load 18 is using vertical
Formula mode is arranged on elevating mechanism 21, and elevating mechanism 21 is installed on the ground, and described cryogenic system is arranged in melt pit；Quilt
Examination motor 12 is vertical in cryogenic system using bottom fixed form, is tested motor 12 and is connected with load 18 by shaft coupling 13
Connect, described control test equipment is installed on the ground.
Further, described cryogenic system includes liquid nitrogen container 22, liquid nitrogen 23 and the insulation shell of resistance to deep cooling, described liquid nitrogen
The inner filling liquid nitrogen 23 of tank 22, it is the insulation shell of resistance to deep cooling that liquid nitrogen container 22 is outer.
Further, the described insulation shell of resistance to deep cooling includes that the base plate 24 and resistance to deep cooling of the hard insulating material of resistance to deep cooling are soft
The side plate 25 of quality guarantee adiabator.
Further, the described hard insulating material of resistance to deep cooling is Deltherm 68890 or Pamitherm 41140；Institute
The blanket type insulation of resistance to deep cooling stated is mineral wool.
The temperature rise calculation method of tested motor 12 of buried deep cooling motor pattern experimental provision is cheated, is comprised the following steps：
Using the resistance of the tested motor 12 of power line measurement of tested motor 12, when the resistance of tested motor 12 was at 1 hour
When interior fluctuating range is no more than the 0.4% of Resistance standard value, assert that temperature rise reaches stable state, by the quilt for calculating the time period
The examination resistance value of motor 12 is to converse the temperature rise of tested motor 12.
Operation principle of the invention is as follows：By means of conventional motors experiment station, remove the horizontal survey of conventional motors experiment station
Examination platform, increases a set of cryogenic system liquid nitrogen container 22 and a set of liftable vertical test stand.During experiment, it is tested motor 12 and bears
Carry and 18 be vertical installation, the shaft extension of tested motor 12 and load 18 is connected by shaft coupling 13, dropping to transmission loss can be with
The degree ignored, has reached the precision that common electric machine test can reach.Meanwhile, for the measurement of temperature rise under solution cryogenic is difficult
Topic, increases a program for resistance monitor in real time on test procedure, using the tested motor of power line measurement of tested motor 12
12 resistance, when the resistance of tested motor 12 can assert temperature when fluctuating range is no more than the 0.4% of Resistance standard value in 1 hour
Rise and reach stable state, by the temperature rise that tested motor 12 is conversed by the resistance value of tested motor 12 for calculating the time period.
The present invention is not limited to the present embodiment, any equivalent concepts in the technical scope of present disclosure or changes
Become, be classified as protection scope of the present invention.
Claims (5)
1. buried deep cooling motor pattern experimental provision is cheated, it is characterised in that：Including load (18), elevating mechanism (21), shaft coupling
(13), cryogenic system and control test equipment, described load (18) are arranged on elevating mechanism (21) using vertical mode, risen
Descending mechanism (21) is installed on the ground, and described cryogenic system is arranged in melt pit；Tested motor (12) uses bottom fixation side
Formula is vertical in cryogenic system, and tested motor (12) is connected by shaft coupling (13) with load (18), and described control is surveyed
Examination equipment is installed on the ground.
It is 2. according to claim 1 to cheat buried deep cooling motor pattern experimental provision, it is characterised in that：Described cryogenic system
Including liquid nitrogen container (22), liquid nitrogen (23) and the insulation shell of resistance to deep cooling, the inner filling liquid nitrogen (23) of described liquid nitrogen container (22), liquid nitrogen container
(22) it is outward the insulation shell of resistance to deep cooling.
It is 3. according to claim 1 to cheat buried deep cooling motor pattern experimental provision, it is characterised in that：Described resistance to deep cooling is protected
Warm housing includes the base plate (24) of the hard insulating material of resistance to deep cooling and the side plate (25) of the blanket type insulation of resistance to deep cooling.
It is 4. according to claim 1 to cheat buried deep cooling motor pattern experimental provision, it is characterised in that：Described resistance to deep cooling is hard
Quality guarantee adiabator is Deltherm 68890 or Pamitherm 41140；The described blanket type insulation of resistance to deep cooling is mineral wool.
5. tested motor (12) temperature rise calculation method of buried deep cooling motor pattern experimental provision is cheated, it is characterised in that：Including with
Lower step：
Using the resistance of the tested motor (12) of power line measurement of tested motor (12), when the resistance of tested motor (12) is small 1
When interior fluctuating range no more than Resistance standard value 0.4% when, assert temperature rise reach stable state, by calculating the time period
Tested motor (12) resistance value is to converse the temperature rise of tested motor (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611115810.7A CN106772034A (en) | 2016-12-07 | 2016-12-07 | Cheat buried deep cooling motor pattern experimental provision and tested motor temperature rise computational methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611115810.7A CN106772034A (en) | 2016-12-07 | 2016-12-07 | Cheat buried deep cooling motor pattern experimental provision and tested motor temperature rise computational methods |
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| Publication Number | Publication Date |
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| CN106772034A true CN106772034A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611115810.7A Pending CN106772034A (en) | 2016-12-07 | 2016-12-07 | Cheat buried deep cooling motor pattern experimental provision and tested motor temperature rise computational methods |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107765043A (en) * | 2017-10-23 | 2018-03-06 | 广州公孙策信息科技有限公司 | A kind of motor load detection auxiliary detection device |
| CN110031760A (en) * | 2019-05-20 | 2019-07-19 | 江苏省特种设备安全监督检验研究院 | Multi-function motor experiment installation apparatus and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182235A (en) * | 2015-09-08 | 2015-12-23 | 哈尔滨工业大学 | Motor test method in low temperature and low pressure environment |
-
2016
- 2016-12-07 CN CN201611115810.7A patent/CN106772034A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182235A (en) * | 2015-09-08 | 2015-12-23 | 哈尔滨工业大学 | Motor test method in low temperature and low pressure environment |
Non-Patent Citations (4)
| Title |
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| L. DLUGIEWICZ等: "Electrical motor for liquid gas pump", 《INTERNATIONAL SYMPOSIUM ON POWER ELECTRONICS, ELECTRICAL DRIVES, AUTOMATION AND MOTION, 2006》 * |
| 中华人民共和国国家质量监督检验检疫总局等: "《旋转电机 定额和性能》", 31 December 2008, 中国标准出版社 * |
| 艾程柳等: "潜液式LNG泵用变频低温异步电机的运行性能研究", 《电工技术学报》 * |
| 艾程柳等: "潜液式液化天然气泵用变频低温异步电机的关键参数设计", 《中国电机工程学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107765043A (en) * | 2017-10-23 | 2018-03-06 | 广州公孙策信息科技有限公司 | A kind of motor load detection auxiliary detection device |
| CN110031760A (en) * | 2019-05-20 | 2019-07-19 | 江苏省特种设备安全监督检验研究院 | Multi-function motor experiment installation apparatus and method |
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Application publication date: 20170531 |