CN203337404U - Motor cooling simulation test bed - Google Patents
Motor cooling simulation test bed Download PDFInfo
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- CN203337404U CN203337404U CN2013204297431U CN201320429743U CN203337404U CN 203337404 U CN203337404 U CN 203337404U CN 2013204297431 U CN2013204297431 U CN 2013204297431U CN 201320429743 U CN201320429743 U CN 201320429743U CN 203337404 U CN203337404 U CN 203337404U
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- 238000001816 cooling Methods 0.000 title claims abstract description 69
- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 238000004088 simulation Methods 0.000 title abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000009467 reduction Effects 0.000 claims description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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Abstract
The utility model discloses a motor cooling simulation test bed used for simulating the cooling effect of a motor model. The motor cooling simulation test bed comprises a power supply, a fan, an air duct, a pressure testing device, a flow testing device and a temperature measuring device, wherein the power supply provides current for the motor model so as to generate heat; the fan is used for driving the air to flow through the motor model; the air duct is used for communicating one of two air inlets of the motor model with the fan; the pressure testing device measures pressure drop of the air flowing through the motor model; the flow testing device measures the air flow flowing through the motor model; and the temperature measuring device measures the temperature inside the motor model. The motor cooling simulation test bed provided by the utility model can simulate the cooling performance and the cooling design of the motor model, can optimize parts, which influence cooling and are required to be modified, of the motor structure according to test results, thereby enabling a motor to have the cooling performance capable of meeting requirements.
Description
Technical field
The utility model relates to the design of electrical motor field, and specifically, the utility model relates to the cooling simulator stand of a kind of motor.
Background technology
Motor can produce power loss on the parts such as coil, iron core in when operation, and this part loss finally all will distribute with the form of heat energy.If the ventilation Cooling Design of motor is unreasonable, will make the motor internal temperature can not remain in rational scope, if temperature rise is too high, can cause insulation ag(e)ing, can make the insulation electrical hydraulic performance decline during long-play.In addition, the local temperature rise in motor is inhomogeneous can produce very large thermal stress, causes the permanent lesion on electric machine structure, finally causes electrical fault, directly affects user's use.
Temperature rise is an important indicator of examination motor, and especially, on aerogenerator, aerogenerator running environment is severe, and the alternation temperature difference is large, when motor breaks down, needs maintenance cost and the erected cost of great number.Therefore, for the generator that is applied in special dimension, stricter to the requirement of Cooling Design.
Yet the cooling structure more complicated of motor internal, at present, the air quantity of paying close attention in design, blast and Temperature Distribution are difficult to obtain result accurately by computing method, and the mode that usually adopts empirical value, emulation technology and simulation test to combine is as the method for design in early stage.
The utility model content
The purpose of this utility model is to provide a kind of motor cooling simulator stand, so that motor is carried out to simulation test, cooling structure and the design of motor is optimized.
To achieve these goals, the utility model provides a kind of motor cooling simulator stand, for the cooling effect to motor model, is simulated, and the cooling simulator stand of described motor comprises: power supply, for described motor model provides electric current to produce heat; Blower fan, for driving air stream through described motor model; Air channel, be communicated with an air port and described blower fan in two air ports of described motor model; Pressure test device, measure the pressure drop of air stream through described motor model; Flow testing device, measure the air mass flow of the described motor model of flowing through; Temperature measuring equipment, measure the temperature of described motor model inside.
Preferably, described power supply is the adjustable DC power supply.
Preferably, described blower fan is by transducer drive, so that the wind speed of described blower fan is adjustable.
Preferably, described blower fan is centrifugal blower or axial flow blower.
Preferably, described pressure test device comprises the pressure tester at the air outlet place that is arranged on described motor model, to measure the static pressure at described air outlet place.
Preferably, described temperature measuring equipment comprises the temperature sensor that is arranged on described motor model inside.
Preferably, described flow testing device comprise the throttling element that is arranged on inside, described air channel, pressure reduction tester and the wind quantity test instrument of the pressure reduction between the upstream and downstream of measuring described throttling element.
Preferably, described throttling element is for being arranged on vertically the orifice-plate type choke block in described air channel.
In addition, the utility model also provides a kind of cooling analogy method of motor of utilizing the cooling simulator stand of above-mentioned motor to carry out, comprising: A, utilize power supply to heat motor model, and make blower fan provide predetermined air mass flow for described motor model; The temperature in motor model is measured after stablizing in B, the temperature field in described motor model.
Preferably, steps A is in particular: A1, utilize described power supply to power to described motor model, make described motor model produce predetermined heat; A2, open described blower fan, and the electric weight described motor model applied according to described power supply, make described blower fan provide predetermined air mass flow for described motor model.
Preferably, steps A also comprises: measure the air mass flow of the described motor model of flowing through and the pressure drop produced during through described motor model when air stream.
The cooling simulator stand of motor provided by the utility model, cooling performance and Cooling Design to motor model are simulated, according to test result, structure that can be cooling on the impact of motor needs improved part to be optimized, so that motor has the cooling performance met the demands.In addition, the cooling simulator stand of motor provided by the utility model can also provide foundation for the type selecting of the blower fan for motor.In addition, can also be simulated the cooling performance of old motor, for follow-up optimization operation provides reference.
The accompanying drawing explanation
Fig. 1 is the schematic diagram according to the cooling simulator stand of motor of embodiment of the present utility model.
Embodiment
In order to make those skilled in the art can better understand the utility model, below by conjunction with the accompanying drawings and embodiments the utility model being described in detail, wherein, identical label means same parts all the time.
Fig. 1 is the schematic diagram according to the cooling simulator stand of motor of embodiment of the present utility model.
With reference to Fig. 1, according to the cooling simulator stand of the motor of embodiment of the present utility model, be used at the during the design of motor, cooling performance and the Cooling Design of designed motor being simulated.In cooling simulation test, adopt with the motor model 1 be complementary by measured motor and simulated.Because size and the weight of designed true motor are larger, but internal structure is circumferentially symmetrical substantially, so the motor model 1 that used at the trial can be the model according to truly the part of motor is manufactured again, for example, this motor model 1 can be 1/10th department patterns of true motor.
The cooling simulator stand of motor comprises: power supply 8, and for tested motor model 1 provides electric current, in order to make at the trial motor model 1 produce heat, thereby the state class of the internal state that makes motor model 1 during with true motor operation is seemingly; Blower fan 4, for driving air stream through motor model 1 and suitable air mass flow being provided, with cooling motor model 1; Air channel 2, an air port (being exemplified as air outlet 102 in figure) and blower fan 4 in two air ports of connection motor model 1, for guiding the air-flow between blower fan 4 and motor model 1; Pressure test device, measure the pressure drop of air stream through motor model 1; Flow testing device, measure the air mass flow of the motor model 1 of flowing through; Temperature measuring equipment, the internal temperature of measurement motor model 1.
In cooling simulation, the data that finally need obtain at least comprise the pressure drop of air of the internal temperature of motor model 1, the motor model 1 of flowing through and the flow of air.
Two air ports of motor model 1 can be called air inlet 101 and air outlet 102, and in preferred embodiment of the present utility model, air channel 2 can be communicated with the air outlet 102 of motor model 1, and the air inlet 101 of motor model 1 directly communicates with outside air.When blower fan 4 running, can produce negative pressure, under the effect of negative pressure, air enters into motor model 1 from air inlet 101, then the flow through inner structure of motor model 1, cooling so that motor model 1 is carried out, 2 be sucked into blower fan 4 and then be discharged from from air outlet 102 along air channel afterwards.
Certainly, in other embodiment of the present utility model, air can also be from blower fan 4 flow direction motor models 1, equally also can realize cooling to motor model 1.At this moment, air channel 2 is communicated with air inlet 101, and air outlet 102 communicates with outside air, and blower fan 4 drives air to enter air channel 2, then from air inlet 101, enters motor model 1, finally from air outlet 102, is discharged to the external world.
According to the different current values that are applied on motor model 1, can select in advance the air mass flow that blower fan 4 provides.Specifically, in the cooling simulation test design of expection, blower fan 4 turns round and corresponding air mass flow is provided under certain rotating speed, this rotating speed and flow can guarantee the to flow through air of motor model 1 has suitable pressure drop, and the internal temperature field that makes motor model 1 is in steady state (SS), and, under this steady state (SS), the internal temperature of motor model 1 is in the desired temperature range of true motor normal operation condition.Therefore, in the operation process of blower fan 4, the flow of the air of the motor model 1 of flowing through can be regulated by the rotating speed of regulating blower fan 4, until measured air mass flow is predetermined air mass flow by flow testing device.
Temperature measuring equipment can comprise the temperature sensor of the inside that is arranged on motor model 1.Temperature sensor can be arranged on different monitoring points, with the temperature of the diverse location that detects motor model 1, for example, magnet or coil etc., the internal temperature field that measured temperature can be predicted motor model 1 roughly according to temperature sensor.
Pressure test device can comprise the pressure tester 7 of the porch in air outlet 102 places that are arranged on motor model 1 or air channel 2, this pressure tester 7 can be measured the static pressure of position, and the static pressure obtained and the pressure reduction between atmospheric pressure are just the pressure drop of air of the motor model 1 of flowing through.
For the measurement of air mass flow, flow testing device provided by the utility model comprises the throttling element 3 that is arranged on 2 inside, air channel, measure pressure reduction tester 6 and the wind quantity test instrument 5 of the pressure reduction between the upstream and downstream of throttling element 3.By measurement flow through the throttling element 3 in air channel 2 air pressure drop (that is, the pressure reduction between the upstream and downstream of throttling element 3) and the coefficient of flow of measured pressure drop and throttling element 3 is inputed in wind quantity test instrument 5, can realize the calculating to air mass flow.In the utility model, different flow system corresponding to throttling element 3.Particularly, two measuring heads of pressure reduction tester 6 can be arranged on respectively the upstream and downstream of throttling element 3, thereby directly obtain pressure reduction.Measured pressure reduction can manually be input in wind quantity test instrument 5.
According to embodiment of the present utility model, also provide a kind of cooling analogy method of motor of utilizing the cooling simulator stand of above-mentioned motor to carry out.In the cooling analogy method of this motor, when carrying out cooling simulation test, at first utilize power supply 8 to motor model 1 power supply, and make motor model 1 produce corresponding heat or reach certain temperature.Regulate frequency converter, make blower fan 4 with certain rotation speed operation, and the air mass flow provided is predetermined air mass flow, that is to say, if the reasonable in internal structure of motor model 1, under this rotating speed or flow, the internal temperature of motor model 1 can remain in the temperature range that meets the normal operation condition.In addition, on one side can also utilize power supply 8 heating motor models 1, Yi Bian make blower fan 4 entrys into service, until the air mass flow that blower fan 4 provides reaches predetermined air mass flow, and the temperature field in power supply 8 is in steady state (SS).
The air mass flow provided at blower fan 4 reaches predetermined air mass flow, and the temperature field in motor model 1 measures the interior temperature of motor model 1 while stablize, then, and just can be to measured data analysis.In addition, above-mentioned to motor model 1 heating with utilize during blower fan 4 provides the process of air mass flow for motor model 1, also can to the air mass flow of the motor model 1 of flowing through and the pressure drop of air, be measured, in order to determine that blower fan 4 provides predetermined air mass flow and the interior temperature field of motor model 1 to stablize simultaneously.
If the temperature in measured motor model 1 is substantially when motor runs well in desired temperature range, the internal temperature field that motor model 1 is described meets the cooling requirement of motor, internal cooling structure and the Cooling Design of designed motor are comparatively reasonable, can be optimized again.
If the temperature in measured motor model 1 surpasses temperature range, illustrate that there is certain irrationality in the inner structure at motor model 1, may cause sluggish in air circulation in the position of the set temperature sensor of motor model 1, need to the structure of motor model 1 be optimized, until the temperature in motor model 1 is in temperature range.In addition, if final temperature and the temperature difference between temperature range of measuring is not very large, and the inner structure of motor model 1 is comparatively reasonable, can also increase the flow of the motor model 1 of flowing through by the rotating speed that increases blower fan 4 so, the temperature in motor model 1 is dropped in temperature range.That is to say, also can be optimized motor model 1, as long as increase air mass flow when true motor rotation.If, when after increasing air mass flow, the temperature of measurement and the temperature difference between temperature range are still very large, still need to the structure of motor model 1 be optimized.
If the temperature in measured motor model 1 is less than predetermined chilling temperature, illustrate that the structure of motor model 1 is also comparatively reasonable.In addition, in order to reduce energy consumption, when the true motor rotation in later stage, in the situation that guarantee cooling effect, can suitably reduce the rotating speed of blower fan 4.
Because the operating condition of true motor is comparatively complicated, in above-mentioned cooling simulation process, can measure multi-group data,, can be to the different magnitude of current of motor model 1 supply, so that motor model 1 produces different heats, the rotating speed of then correspondingly regulating blower fan 4 changes the air mass flow of the motor model 1 of flowing through, and this can improve the reliability of analog result to a certain extent.
By the cooling simulator stand of motor provided by the utility model, can change easily the thermal value of motor model 1 and the rotating speed of blower fan 4, realized the cooling simulation to the various working of motor model 1.By the resulting data of cooling simulation, with respect to simulation calculation, its degree of accuracy significantly improves.According to resulting analog result, when design of electrical motor, can pinpoint the problems, in advance motor is optimized, significantly reduce the motor in later stage and revised cost, effectively realized the structure optimization to motor.In addition, by cooling analog result, can also provide certain reference frame for the type selecting of cooling the used blower fan of motor.In addition, the cooling simulator stand of this motor also can realize the test of the cooling structure of old product, for the further optimization of product provides certain reference frame.
In addition, the cooling simulator stand of motor provided by the utility model and the cooling analogy method of motor not only can, for the cooling simulation of motor, can also be applied to some other forms of passage, for example, filter pulp, mazy passage, or the ventilation pressure loss test of special import and export form etc.
The above have been described in detail embodiment of the present utility model; although meaned and described some embodiment; but those skilled in the art should understand that; in the situation that do not break away from principle of the present utility model and the spirit that is limited its scope by claim and equivalent thereof; can modify and perfect to these embodiment, these modifications and improve also should be in protection domain of the present utility model.
Claims (8)
1. the cooling simulator stand of motor, simulated for the cooling effect to motor model, it is characterized in that, comprising:
Power supply, for described motor model provides electric current to produce heat;
Blower fan, for driving air stream through described motor model;
Air channel, be communicated with an air port and described blower fan in two air ports of described motor model;
Pressure test device, measure the pressure drop of air stream through described motor model;
Flow testing device, measure the air mass flow of the described motor model of flowing through;
Temperature measuring equipment, measure the temperature of described motor model inside.
2. the cooling simulator stand of motor according to claim 1, is characterized in that, described power supply is the adjustable DC power supply.
3. the cooling simulator stand of motor according to claim 1, is characterized in that, described blower fan is by transducer drive, so that the wind speed of described blower fan is adjustable.
4. the cooling simulator stand of motor according to claim 3, is characterized in that, described blower fan is centrifugal blower or axial flow blower.
5. the cooling simulator stand of motor according to claim 1, is characterized in that, described pressure test device comprises the pressure tester at the air outlet place that is arranged on described motor model, to measure the static pressure at described air outlet place.
6. the cooling simulator stand of motor according to claim 1, is characterized in that, described temperature measuring equipment comprises the temperature sensor that is arranged on described motor model inside.
7. the cooling simulator stand of motor according to claim 1, it is characterized in that pressure reduction tester and the wind quantity test instrument of the pressure reduction between the upstream and downstream that described flow testing device comprises the throttling element that is arranged on inside, described air channel, measure described throttling element.
8. the cooling simulator stand of motor according to claim 7, is characterized in that, described throttling element is for being arranged on vertically the orifice-plate type choke block in described air channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204297431U CN203337404U (en) | 2013-07-18 | 2013-07-18 | Motor cooling simulation test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204297431U CN203337404U (en) | 2013-07-18 | 2013-07-18 | Motor cooling simulation test bed |
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| Publication Number | Publication Date |
|---|---|
| CN203337404U true CN203337404U (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204297431U Expired - Lifetime CN203337404U (en) | 2013-07-18 | 2013-07-18 | Motor cooling simulation test bed |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458315A (en) * | 2014-12-26 | 2015-03-25 | 南车株洲电机有限公司 | Backpack cooler type testing device |
| CN103364214B (en) * | 2013-07-18 | 2016-09-14 | 北京金风科创风电设备有限公司 | Motor cooling simulation test bed and motor cooling simulation method |
| CN115014832A (en) * | 2022-08-08 | 2022-09-06 | 南昌三瑞智能科技有限公司 | Experimental device and test method for rapidly verifying performance of heat dissipation scheme in motor |
-
2013
- 2013-07-18 CN CN2013204297431U patent/CN203337404U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364214B (en) * | 2013-07-18 | 2016-09-14 | 北京金风科创风电设备有限公司 | Motor cooling simulation test bed and motor cooling simulation method |
| CN104458315A (en) * | 2014-12-26 | 2015-03-25 | 南车株洲电机有限公司 | Backpack cooler type testing device |
| CN115014832A (en) * | 2022-08-08 | 2022-09-06 | 南昌三瑞智能科技有限公司 | Experimental device and test method for rapidly verifying performance of heat dissipation scheme in motor |
| CN115014832B (en) * | 2022-08-08 | 2022-10-25 | 南昌三瑞智能科技有限公司 | Experimental device and test method for rapidly verifying performance of heat dissipation scheme in motor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |