CN107091855A - Air cooler unlike material cooling tube cooling effect contrast test method - Google Patents
Air cooler unlike material cooling tube cooling effect contrast test method Download PDFInfo
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- CN107091855A CN107091855A CN201710375719.7A CN201710375719A CN107091855A CN 107091855 A CN107091855 A CN 107091855A CN 201710375719 A CN201710375719 A CN 201710375719A CN 107091855 A CN107091855 A CN 107091855A
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- Prior art keywords
- cooling tube
- cooling
- unlike material
- cooler
- pipe
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- 238000001816 cooling Methods 0.000 title claims abstract description 78
- 239000000463 material Substances 0.000 title claims abstract description 30
- 230000000694 effects Effects 0.000 title claims abstract description 19
- 238000010998 test method Methods 0.000 title claims abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 238000002474 experimental method Methods 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 238000012935 Averaging Methods 0.000 claims 1
- 235000019628 coolness Nutrition 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
Abstract
A kind of air cooler unlike material cooling tube cooling effect contrast test method, it is characterized in that：The experiment is carried out on same motor, in terms of the end of cooler, all cooling tubes are arranged by the way of equidistantly tiling layer by layer, the length of unlike material cooling tube, diameter are identical with pipe thickness, when loading cooling tube, two kinds of cooling tubes are taken respectively from steel pipe, three kinds of cooling tubes of aluminum pipe and copper pipe, and the quantity that experiment is chosen every time is 1 to 15, it is evenly arranged in air cooler, remaining position is fully enclosed a kind of remaining cooling tube；Because the thermal conductivity factor difference of cooling tube causes the average leaving air temp of cooling tube air outlet different, it is poor by the average leaving air temp for measuring unlike material cooling tube air outlet, the difference of the actual heat-sinking capability of cooling tube of the different unlike material of thermal conductivity factor can be learnt.
Description
Technical field
The present invention relates to a kind of air cooler unlike material cooling tube cooling effect contrast test method, especially a kind of high pressure
Motor air cooler unlike material cooling tube cooling effect contrast test method, belongs to technical field of mechanical design.
Background technology
Existing high-tension motor mains voltage grade is 6000V and 10000V, and the cooling tube of air cooler can be using not
Same material, mainly there is steel pipe and aluminum pipe, few use copper pipes, and the thermal conductivity factor of the cooling tube of unlike material is different, uses it
The radiating effect for the air cooler made is also different, and the ratio of cooling tube generally does to reduce cost using steel pipe in air cooler producer
More, this is also possible for the high-voltage motor of common efficiency, but for height more than two grades of larger efficiencies of power ratio
Pressure high efficiency motor is just undertaken to do what is apparently beyond one's ability, and is often occurred because the overall temperature rise of motor is too high caused by air cooler cooling effect is bad
Phenomenon occurs.
Cooler includes air/water cooler and hollow cooler.Air/water cooler is that the water at low temperature flowed through in cooling tube passes through
Tube wall carries out heat exchange, the device that the hot-air outside cooling tube namely in motor is cooled down；Hollow cooler is stream
Heat exchange is carried out by tube wall through the Cryogenic air in cooling tube, the hot-air outside cooling tube namely in motor carried out cold
But device.
The thermal conductivity factor heat exchanging influential effect of cooler cooling tube is larger.
Thermal conductivity factor λ refers under the conditions of steady heat transfer, material thick 1m, and the temperature difference of both side surface is 1 degree（K or DEG C）,
In 1 second, pass through 1m2The heat of area transmission, unit is W/m.K（Watt/meter degree）, the composition structure of thermal conductivity factor and material,
The factors such as density, moisture content, temperature are relevant.
Because the thermal conductivity factor of copper pipe is 400, the thermal conductivity factor 240 of aluminum pipe, the stainless steel of thermal conductivity factor 78,304 of steel pipe
Heat conduction system be 16.2；In response to the requirement of national energy-saving emission reduction industrial policy, the radiating of air cooler is improved to greatest extent
The loss of external fan, so as to improve electric efficiency, reduces the operating cost of motor, as far as possible using aluminium in effect, reduction motor
Pipe serves as the cooling tube of air cooler, it may be necessary to be considered as copper pipe（Note：Air/water cooler is exactly as cooling using copper pipe
Pipe）.
Some producers state, when the very thin thickness of cooling tube, when reaching that 1mm is thick, the situation run in motor stabilizing
Under, because motor internal temperature is higher, the temperature difference inside and outside motor is larger, same size size and number, different cooling tube materials
Air cooler, the heat exchange amount of aluminum pipe air cooler is only bigger than the heat exchange amount of steel pipe air cooler by 5~8%.But cannot take out definite examination
Data and process of the test are tested, this theory is also unconvincing.Particularly inconvenient also no motor producer was tested at three
Using the different air cooler of the appearance and size made of cooling tube of varying number unlike material while entering on the motor of same model
Row temperature rise test, to verify cooling effect.Because, the heat exchange amount identical cooler being made of unlike material cooling tube, institute
The quantity of the cooling tube of use is different, and specifically differs most suitable in quantity, without accurate test data, so
Present cooling effect difference is an estimation, is not very accurate, is often occurred in reality because air cooler designs unreasonable
Cause the thing that motor temperature rise is too high.There are many air cooler producers also with cooling tube of the stainless steel as air/water cooler.
The content of the invention
The present invention designs a kind of simple and easy to apply, accurately and reliably motor cooling by taking high-voltage motor hollow cooler as an example
The contrast test method of device unlike material cooling tube cooling effect.
This test method is on the cooler of same motor while loading onto the cooling of three kinds of identical quantity unlike materials
Pipe, carries out judging cooling effect difference by measuring the average leaving air temp of cooling tube during temperature rise test.
The beneficial effects of the invention are as follows the cooling effect experiment for carrying out three kinds of material cooling tubes simultaneously on a motor, examination
Test that condition is identical, the workload of experiment is small, and experimentation cost is low, and test data is accurate.
Brief description of the drawings
Fig. 1 is the air cooler structural representation of air to air cooling high-voltage motor of the present invention；
Wherein：Right-hand member is independent blower fan, and the cooling tube that vertical equity is placed has 4 rows 4 to arrange.
Embodiment
As shown in drawings, a kind of specific reality of air cooler unlike material cooling tube cooling effect contrast test method of the present invention
Example is applied, wherein：Right-hand member is independent blower fan, and the cooling tube that vertical equity is placed has 4 rows 4 to arrange, and actual quantity is considerably beyond diagram number
Amount, there is 300 to 800.The experiment is carried out on same motor, in terms of the left part of cooler of electric motor, all cooling tubes
Arranged, rather than arranged using W types or M type modes by the way of equidistantly tiling layer by layer, the length of unlike material cooling tube,
Diameter is identical with pipe thickness, is easy to contrast cooling effect.In terms of the left part of cooler of electric motor, air cooling is counted to from the left side
Two aluminum pipes are placed at about the 1/3 of device width.The spacing of two aluminum pipes be air cooler height 1/3, below that aluminum pipe arrive
The spacing on air cooler base is the 1/3 of air cooler height, and two copper pipes, the position of two copper pipes and two are loaded on the right of air cooler
The position of individual aluminum pipe is symmetrical；Remaining position all loads conventional material：Steel pipe.So, two aluminum pipes and two copper pipes
It is also identical with the inside and outside total ventilation of the steel pipe opening EAT around it, heat transfer space and cooling tube, but is due to cold
But the thermal conductivity factor of pipe is different, and exchange capability of heat and heat exchange amount are also different, causes the average leaving air temp of cooling pipe orifice different,
Namely cold air is different by elevated temperature after cooling tube, reflects that the temperature of motor internal reduction is different indirectly, so that
The difference of the actual heat-sinking capability of cooling tube of the different unlike material of thermal conductivity factor can be reflected.Determined during for design air cooler
The quantity of unlike material cooling tube provides direct technical parameter, it is ensured that designed air cooler had both met wanting for heat dissipation capacity
Ask, will not cause the waste of raw material because of the quantity of blindness increase cooling tube again.
The experiment is carried out a test by same motor, and the quantity of aluminum pipe and copper pipe can increase to 3~10,
Even arrangement, by calculating the average leaving air temp of unlike material cooling tube respectively, compares its difference, use can be reflected exactly
The difference of the cooling effect of the air cooler of the cooling tube of unlike material, embodies out the cooling-down effect poor several years of air cooler.
It is exactly the temperature rise poor several years of motor.
Process of the test can arbitrarily exchange the quantity of the cooling tube of three kinds of materials and position.
Claims (1)
1. a kind of air cooler unlike material cooling tube cooling effect contrast test method, it is characterized in that：The experiment is at same
Carried out on motor, in terms of the end of cooler of electric motor, all cooling tubes are arranged by the way of equidistantly tiling layer by layer, different materials
The length of matter cooling tube, diameter are identical with pipe thickness, when loading cooling tube, from steel pipe, the three kinds of coolings of aluminum pipe and copper pipe
Two kinds of cooling tubes are taken in pipe respectively, the quantity that experiment is chosen every time is 1 to 15, is evenly arranged in air cooler, remaining
Position is fully enclosed a kind of remaining cooling tube；Because the thermal conductivity factor difference of cooling tube causes averaging out for cooling tube air outlet
Air temperature is different, poor by the average leaving air temp for measuring unlike material cooling tube air outlet, can learn that thermal conductivity factor is different
Unlike material the actual heat-sinking capability of cooling tube difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710375719.7A CN107091855A (en) | 2017-05-24 | 2017-05-24 | Air cooler unlike material cooling tube cooling effect contrast test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710375719.7A CN107091855A (en) | 2017-05-24 | 2017-05-24 | Air cooler unlike material cooling tube cooling effect contrast test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107091855A true CN107091855A (en) | 2017-08-25 |
Family
ID=59640381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710375719.7A Pending CN107091855A (en) | 2017-05-24 | 2017-05-24 | Air cooler unlike material cooling tube cooling effect contrast test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107091855A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438728A (en) * | 2013-08-11 | 2013-12-11 | 李贤明 | Air-air cooler |
| CN103997162A (en) * | 2014-05-02 | 2014-08-20 | 宁波市成大机械研究所 | Air-air cooled high-voltage high-efficiency motor |
| CN204027800U (en) * | 2014-07-01 | 2014-12-17 | 哈尔滨电机厂有限责任公司 | gas cooler performance testing device |
| CN105910477A (en) * | 2016-05-06 | 2016-08-31 | 刘少春 | Air-cooling-type cooler |
| CN205878956U (en) * | 2016-08-03 | 2017-01-11 | 萨震压缩机（上海）有限公司 | High -temperature gas cooling device |
-
2017
- 2017-05-24 CN CN201710375719.7A patent/CN107091855A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438728A (en) * | 2013-08-11 | 2013-12-11 | 李贤明 | Air-air cooler |
| CN103997162A (en) * | 2014-05-02 | 2014-08-20 | 宁波市成大机械研究所 | Air-air cooled high-voltage high-efficiency motor |
| CN204027800U (en) * | 2014-07-01 | 2014-12-17 | 哈尔滨电机厂有限责任公司 | gas cooler performance testing device |
| CN105910477A (en) * | 2016-05-06 | 2016-08-31 | 刘少春 | Air-cooling-type cooler |
| CN205878956U (en) * | 2016-08-03 | 2017-01-11 | 萨震压缩机（上海）有限公司 | High -temperature gas cooling device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170825 |
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| RJ01 | Rejection of invention patent application after publication |