CN108088692A - A kind of thermal shock test method of radiator, apparatus and system - Google Patents
A kind of thermal shock test method of radiator, apparatus and system Download PDFInfo
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- CN108088692A CN108088692A CN201611036827.3A CN201611036827A CN108088692A CN 108088692 A CN108088692 A CN 108088692A CN 201611036827 A CN201611036827 A CN 201611036827A CN 108088692 A CN108088692 A CN 108088692A
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- radiator
- valve
- temperature
- coolant
- thermal shock
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
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- General Physics & Mathematics (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A kind of thermal shock test method of radiator, apparatus and system, the described method includes：The environment temperature where the radiator is controlled to default environment temperature, and controls heater that coolant is heated to default coolant temperature；According to the default environment temperature and default coolant temperature, control flows into the coolant rate of the radiator；Obtain the temperature of the radiator；According to the temperature of the radiator, correspondingly adjustment flows into the coolant rate of the radiator and it is determined whether to enable fans；Wherein：The fan, identical with the relative mounting positions on the vehicle with the relative position of the radiator, the coolant for being suitable for flowing into the radiator radiates；It detects whether the radiator leaks, and according to testing result, determines the cold-resistant thermal shock resistance properties of the radiator.The accuracy of the thermal shock test of radiator can be improved using the above program.
Description
Technical field
The present invention relates to vehicle component testing field more particularly to a kind of thermal shock test method of radiator, dresses
It puts and system.
Background technology
Water tank is also known as radiator, is an important composition component of water-cooled engine heat-radiation loop.Due to the specific heat of water
Hold larger, temperature rise is not a lot after cooling water absorbs the heat of cylinder body, therefore the heat of engine can pass through cooling water shape
Into fluid loop, thermophore conduction heat is used water as, then by fan to flow into the water-cooled of radiator, forms cooling again
Water flows into the cylinder body of engine, to avoid indicating oven temperature of engine.Such as winter water temperature it is too low in the case of, can also stop
The cycling of water in sealing case, avoids engine temperature too low.In some cases, engine start causes the water temperature of heat-radiation loop
It is higher, but since the start and stop of engine are frequent, the reasons such as the too low or extraneous wind of extraneous relatively low environment temperature is larger are made
Thermal shock is caused into the rapid drawdown of heat-radiation loop water temperature, and then to water tank.In order to ensure that the cold-and-heat resistent of water tank impacts before dispatching from the factory
Function to vehicle water tank, it is necessary to carry out thermal shock test, to determine the situation of the cold-resistant thermal shock resistance properties of radiator.
At present, by setting two difference that can convey the water pipe of hot water and cold water in the water inlet of radiator, and then control
The opening and closing of two water pipes controls the temperature of radiator, and thermal shock test is carried out to radiator.
But the accuracy of the thermal shock of above-mentioned radiator test is low.
The content of the invention
The present invention solves the problems, such as it is how to improve the accuracy that the thermal shock of radiator is tested.
To solve the above problems, an embodiment of the present invention provides a kind of thermal shock test method of radiator, the sides
Method includes：The environment temperature where the radiator is controlled to default environment temperature, and heater is controlled to heat coolant
To default coolant temperature；According to the default environment temperature and default coolant temperature, control flows into the heat dissipation
The coolant rate of device；Obtain the temperature of the radiator；According to the temperature of the radiator, correspondingly adjustment flows into described dissipate
The coolant rate of hot device and it is determined whether to enable fans；Wherein：The fan, with the relative position of the radiator and in vehicle
Relative mounting positions on are identical, and the coolant for being suitable for flowing into the radiator radiates；Detecting the radiator is
It is no to leak, and according to testing result, determine the cold-resistant thermal shock resistance properties of the radiator.
Optionally, the heater corresponds to the engine on vehicle suitable for the simulation radiator.
Optionally, the default environment temperature is set according to used environment temperature after vehicle release.
Optionally, the temperature of the radiator is obtained at the temperature sensor of the radiator by being arranged at.
Optionally, what the temperature sensor was arranged at the radiator goes out coolant mouth flat tube position.
Optionally, the temperature according to the radiator, correspondingly adjustment flow into the coolant rate of the radiator
And it is determined whether to enable fan corresponding with the radiator, including：When the temperature of the radiator is higher than default first threshold
Value opens the fan, and the coolant rate for adjusting the inflow radiator is zero；When the temperature of the radiator is less than pre-
If second threshold, close the fan, and adjust and flow into the coolant rate of the radiator as default coolant rate,
The first threshold is more than the second threshold.
Optionally, the mixture that the coolant is mixed for ethylene glycol with water by one to one volume ratio.
Optionally, the coolant rate of the radiator is flowed by the first valve and the adjustment of the second valve；Wherein：It is described
First valve is triple valve, first valve and second valve, suitable for simulating the thermostat on the vehicle, when described
When the temperature of radiator is higher than the first threshold, first valve and second valve are opened, when the radiator
When temperature is less than the second threshold, first valve is kept to close second valve for opening.
Optionally, the heater, the first valve, the second valve, radiator, tank/overflow pipe, water pump coupling successively
It connects, forms the first circuit；The heater, the first valve, water pump and heater couple successively, form second servo loop；Water flows through
It is cycled after heater heating along first circuit or second servo loop；Wherein：The tank, which is suitable for coordinating with overflow pipe, to be adjusted
It saves the coolant in the radiator and is in default water scope, the water pump is suitable for the coolant being pumped into the heating
Device.
Optionally, the method further includes：Judgement tests whether abnormal conditions occur；There are abnormal conditions when determining to test
When, perform corresponding protection act.
Optionally, the abnormal conditions, including following at least one：It is more than default temperature threshold, described to cool down liquid temperature
The pressure difference of radiator is more than default threshold pressure differential, the liquid level of tank less than default level threshold.
Optionally, the protection act, including：Stop as water heating, control water pump is out of service, terminates test.
An embodiment of the present invention provides a kind of thermal shock test control device of radiator, described device includes：First
Control unit suitable for controlling the environment temperature where the radiator to default environment temperature, and controls heater that will cool down
Liquid is heated to default coolant temperature；Second control unit, suitable for according to the default environment temperature and default cooling
Liquid temperature degree, control flow into the coolant rate of the radiator；First acquisition unit, suitable for obtaining the temperature of the radiator；
3rd control unit, suitable for the temperature according to the radiator, correspondingly adjustment flow into the radiator coolant rate and
It is determined whether to enable fans corresponding with the radiator；Wherein：The fan, with the relative position of the radiator and in vehicle
Relative mounting positions on are identical, and the coolant for being suitable for flowing into the radiator radiates；Determination unit is adapted to detect for
Whether the radiator leaks, and according to testing result, determines the cold-resistant thermal shock resistance properties of the radiator.
Optionally, the heater corresponds to the engine on vehicle suitable for the simulation radiator.
Optionally, first control unit, it is described pre- suitable for being set according to used environment temperature after vehicle release
If environment temperature.
Optionally, the first acquisition unit, suitable for by being arranged at acquisition institute at the temperature sensor of the radiator
State the temperature of radiator.
Optionally, what the temperature sensor was arranged at the radiator goes out coolant mouth flat tube position.
Optionally, the 3rd control unit suitable for working as the temperature of the radiator higher than default first threshold, is opened
The fan, and the coolant rate for adjusting the inflow radiator is zero；When the temperature of the radiator is less than default the
Two threshold values, close the fan, and adjust and flow into the coolant rate of the radiator as default coolant rate, and described the
One threshold value is more than the second threshold.
Optionally, the mixture that the coolant is mixed for ethylene glycol with water by one to one volume ratio.
Optionally, the 3rd control unit flows into the radiator suitable for passing through the first valve and the adjustment of the second valve
Coolant rate；Wherein：First valve is triple valve, first valve and second valve, suitable for simulating institute
The thermostat on vehicle is stated, when the temperature of the radiator is higher than the first threshold, opens first valve and described
Second valve when the temperature of the radiator is less than the second threshold, keeps first valve to be closed for opening
Second valve.
Optionally, the heater, the first valve, the second valve, radiator, tank/overflow pipe, water pump coupling successively
It connects, forms the first circuit；The heater, the first valve, water pump couple successively, form second servo loop；The heated device of current adds
It is cycled after heat along first circuit or second servo loop；Wherein：The tank is suitable for adjusting described dissipate with overflow pipe cooperation
Coolant in hot device is in default water scope, and the water pump is suitable for the coolant being pumped into the heater.
Optionally, described device further includes：Judging unit and protection location, wherein：The judging unit, suitable for judging to survey
Whether examination there are abnormal conditions；The protection location, it is dynamic suitable for when determining that abnormal conditions occurs in test, performing corresponding protection
Make.
Optionally, the abnormal conditions, including following at least one：It is more than default temperature threshold, described to cool down liquid temperature
The pressure difference of radiator is more than default threshold pressure differential, the liquid level of tank less than default level threshold.
Optionally, the protection act, including：Stop as water heating, control water pump is out of service, terminates test.
A kind of thermal shock an embodiment of the present invention provides radiator tests system, the system comprises：Heater, three
The first valve, the second valve, fan, tank, overflow pipe, water pump and the above-described any test control of port valve structure
Device processed；Wherein：The heater, the first valve, the second valve, radiator, tank/overflow pipe, water pump couple successively,
The first circuit is formed, the heater, the first valve, water pump couple successively, second servo loop are formed, after the heated device heating of current
It is cycled along first circuit or second servo loop；The heater, suitable for simulating the engine on the vehicle；The water pump,
Suitable for the coolant is pumped into the heater；First valve and second valve, suitable for simulating on the vehicle
Thermostat, when the temperature of the radiator is higher than default first threshold, open first valve and second valve
Door when the temperature of the radiator is less than default second threshold, keeps first valve as opening, described in closing
Second valve；Wherein：The first threshold is more than the second threshold；The fan, with the relative position of the radiator with
The position being installed on the vehicle is identical, and the coolant for being suitable for flowing into the radiator radiates；The tank
And overflow pipe, the coolant suitable for adjusting in the radiator are in default cooling liquid measure scope.
Optionally, the system also includes：First flowmeter, positioned at the downstream of the heater and first valve
Upstream flows through the coolant rate of the pipeline between the heater and the first valve suitable for test.
Optionally, the system also includes：Second flowmeter, in the second servo loop, and in first valve
The downstream of door and the upstream of second valve, the pipeline between first valve and second valve is flowed through suitable for test
Coolant rate.
Compared with prior art, technical scheme has the following advantages：
By controlling the environment temperature where radiator to default environment temperature, and heater is controlled to heat coolant
To default coolant temperature, according to the default environment temperature and default coolant temperature, control flows into the heat dissipation
The coolant rate of device obtains the temperature of the radiator, and and then according to the temperature of the radiator, correspondingly adjustment flows into
The coolant rate of the radiator and it is determined whether to enable fan, then detects whether the radiator leaks, and root
According to testing result, the cold-resistant thermal shock resistance properties of the radiator is determined.Due to be to the cooling of radiator control by fan and
Environment temperature, compared with the method for the water directly by inputting lower temperature, is closer to really cause cold come what is realized
The operating mode that thermal shock situation occurs, therefore the accuracy of the thermal shock test of radiator can be improved.
Further, since the coolant mouth flat tube position that goes out of radiator is to be easiest to occur leaking and be influenced most be subject to fan
Small position, by being arranged at the temperature sensor for going out coolant mouth flat tube position of radiator, to obtain the radiator
Temperature can improve the accuracy of the thermal shock test of radiator.
Further, by judging to test whether abnormal conditions occur, and then when determining that abnormal conditions occurs in test, perform
Corresponding protection act, can be to avoid causing the damage of dangerous and instrument in test process, therefore can improve thermal shock test
Security.
Description of the drawings
Fig. 1 is a kind of flow diagram of the thermal shock test method of radiator in the embodiment of the present invention；
Fig. 2 is using the heat sink inlet water temperature variation diagram that thermal shock test method obtains in the prior art；
Fig. 3 is the heat sink inlet water temperature variation diagram obtained using the thermal shock test method in the embodiment of the present invention；
Fig. 4 is a kind of structure diagram of the thermal shock test control device of radiator in the embodiment of the present invention；
Fig. 5 is a kind of structure diagram of the thermal shock test system of radiator in the embodiment of the present invention.
Specific embodiment
To solve the problems, such as that the accuracy of the thermal shock of radiator in the prior art test is low, the embodiment of the present invention passes through
The environment temperature where the radiator is controlled to default environment temperature, and it is default that heater is controlled to be heated to coolant
Coolant temperature, according to the default environment temperature and default coolant temperature, control flows into the cooling of the radiator
Flow quantity obtains the temperature of the radiator, and and then according to the temperature of the radiator, correspondingly adjustment flows into the heat dissipation
The coolant rate of device and it is determined whether to enable fan, then detects whether the radiator leaks, and is tied according to detection
Fruit determines the cold-resistant thermal shock resistance properties of the radiator.Since the cooling control to radiator is by fan and environment temperature
Come what is realized, compared with the method for the water directly by inputting lower temperature, it is closer to really cause thermal shock feelings
The operating mode that condition occurs, therefore the accuracy of the thermal shock test of radiator can be improved.
It is understandable for the above objects, features and advantages of the present invention is enable to become apparent, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
Fig. 1 shows a kind of flow diagram of the thermal shock test method of radiator in the embodiment of the present invention, under
Face is discussed in detail the method with reference to figure 1 step by step：
Step S11：The environment temperature where the radiator is controlled to default environment temperature, and controls heater will be cold
But liquid is heated to default coolant temperature.
The environment for the appearance thermal shock being likely encountered after dispatching from the factory for simulating vehicle, in specific implementation, can control
Environment temperature where the radiator is made to default environment temperature.Also, since radiator is used in engine system,
Engine radiating is suitable for, therefore in specific implementation, it can control to correspond to the engine on vehicle suitable for the simulation radiator
Heater, coolant is heated to default coolant temperature, and then coolant is exported into heater, opens coolant and follow
Ring, vehicle working condition when being started with simulated engine.
In specific implementation, the coolant is the larger liquid of specific heat capacity.For example the coolant can be ethylene glycol
The mixture mixed with water by one to one volume ratio, or water.Those skilled in the art according to actual needs,
It can select other types of coolant.The present invention is more fully understood and realized for ease of those skilled in the art, it can be with cold
But the present invention will be described as an example for water for liquid.
In specific implementation, can the default environment temperature be set according to used environment temperature after vehicle release
Degree.For example, being used after vehicle release in the Northeast, default environment temperature can be set and be minus 30 DEG C；Vehicle release
It is used afterwards in African Territories, default environment temperature can be arranged to 40 DEG C.
Step S12：According to the default environment temperature and default coolant temperature, control flows into the radiator
Coolant rate.
In the cooling system of the engine of vehicle, there are two cooling water circulation loops, according to the temperature of engine, cool down
Water can be flowed in different cooling water circulation loops.It therefore in specific implementation, can be according to the default environment temperature and pre-
If coolant temperature, control flows into the coolant rate of the radiator, to simulate coolant in engine-cooling system
Working condition.
Step S13：Obtain the temperature of the radiator.
In specific implementation, the temperature of the radiator can be obtained at the temperature sensor of the radiator by being arranged at
Degree.
Since the coolant mouth flat tube position that goes out of radiator is to be easiest to occur leaking and be influenced be subject to fan minimum position
It puts, it, in an embodiment of the present invention, can be by the temperature sensing in order to improve the accuracy of the thermal shock of radiator test
What device was arranged at the radiator goes out coolant mouth flat tube position.
Step S14：According to the temperature of the radiator, correspondingly adjustment flows into the coolant rate of the radiator and sentences
It is disconnected whether to open fan.
It should be noted that fan position opposite with the installation on the vehicle with the relative position of the radiator
Put identical, the coolant that the fan is suitable for flowing into the radiator radiates.Cooled down by opening fan for radiator,
Can to simulate blowing radiator is caused to cool down rapidly scene.
In specific implementation, the temperature according to the radiator, correspondingly adjustment flow into the cooling of the radiator
Flow quantity and it is determined whether to enable fan corresponding with the radiator, specifically, the radiator temperature higher than pre-
If first threshold when, open the fan, and adjust that flow into the coolant rate of the radiator be zero；In the radiator
Temperature less than default second threshold, close the fan, and adjust that flow into the coolant rate of the radiator be default
Coolant rate.It should be noted that the first threshold is more than the second threshold.
In specific implementation, the cooling liquid stream of the radiator can be flowed by the first valve and the adjustment of the second valve
Amount.In an embodiment of the present invention, first valve is triple valve, first valve and second valve, suitable for mould
Intend the thermostat on the vehicle, when the temperature of the radiator is higher than the first threshold, open first valve and
Second valve when the temperature of the radiator is less than the second threshold, can keep first valve to open
State closes second valve.
In specific implementation, in the heater, the first valve, the second valve, radiator, tank or overflow pipe
Any one and water pump couple successively, form the first circuit；The heater, the first valve, water pump and heater couple successively,
Form second servo loop；It is cycled after the heated device heating of current along first circuit or second servo loop.Wherein：The tank
Coolant suitable for being adjusted with overflow pipe cooperation in the radiator is in default water scope, and the water pump is suitable for by described in
Coolant is pumped into the heater.
Step S15：It detects whether the radiator leaks, and according to testing result, determines the resistance to of the radiator
Thermal shock performance.
In specific implementation, after thermal shock is carried out to radiator, it can detect whether the radiator leaks,
And according to testing result, the cold-resistant thermal shock resistance properties of the radiator is determined.Specifically, standard of comparison can be set, such as
Setting leaks after 1000 cold shock testings, determines that radiator has normal cold-resistant thermal shock resistance properties.If
There is leakage after detection finds that radiator simply undergoes 500 tests, then show the cold-hot punching of the radiator
Hit poor-performing；If finding that radiator experienced 1200 test rears and leak by detection, show the heat dissipation
The cold-resistant thermal shock resistance properties of device is preferable.
In order to avoid causing the damage of dangerous and instrument in test process, the security of thermal shock test is improved, is being had
During body is implemented, it can also judge to test whether abnormal conditions occur, if it is determined that when abnormal conditions occurs in test, phase can be performed
The protection act answered.
In specific implementation, the abnormal conditions can include following at least one：It is more than default temperature to cool down liquid temperature
Threshold value, the pressure difference of the radiator are more than default threshold pressure differential, the liquid level of tank less than default level threshold.Ability
Field technique personnel according to actual needs, can also include other abnormal conditions.
In specific implementation, the protection act, including：Stop as water heating, control water pump is out of service, terminates and surveys
Examination.Those skilled in the art according to actual needs, can also set other protection acts.
Fig. 2 is shown using the heat sink inlet water temperature variation diagram that thermal shock test method obtains in the prior art, horizontal
Axis is the time, and unit is the second (s), and the longitudinal axis is the temperature of water, and unit is degree Celsius (DEG C).It can be observed from fig. 2 that in the prior art
Thermal shock test heat sink inlet water temperature can be caused cataclysm occur.But in practical service environment, there is thermal shock
The water temperature of the radiator of phenomenon is relatively slow change, and causes to be extraneous ring to the reason for radiator progress thermal shock
Border temperature and blowing.
Fig. 3 shows that the heat sink inlet water temperature obtained using the thermal shock test method in the embodiment of the present invention is changed
Figure, transverse axis are the time, and unit is the second (s), and the longitudinal axis is the temperature of water, and unit is degree Celsius (DEG C), as seen from Figure 3, heat dissipation
Mitigation is compared in the change of device inlet water temperature.Therefore, the method in the embodiment of the present invention passes through the environment where controlling the radiator
Temperature controls heater that coolant is heated to default coolant-temperature gage to default environment temperature, according to the default ring
Border temperature and default coolant temperature, control flow into the coolant rate of the radiator, obtain the temperature of the radiator,
And and then according to the temperature of the radiator, correspondingly adjustment flow into the radiator coolant rate and it is determined whether to enable
Fan, then detects whether the radiator leaks, and according to testing result, determines the cold-resistant thermal shock of the radiator
Performance.Due to being realized to the cooling control of radiator by fan and environment temperature, compared with directly by input compared with
The method of the water of low temperature is closer to the operating mode that thermal shock situation is really caused to occur, therefore can improve radiator
Thermal shock test accuracy.
For those skilled in the art is caused to more fully understand and realize the present invention, it has been illustrated below one in the embodiment of the present invention
The structure diagram of the thermal shock test control device of kind radiator, as shown in figure 4, described device can include：First control
Unit 41 processed, the second control unit 42, first acquisition unit 43, the 3rd control unit 44 and determination unit 45, wherein：
First control unit 41 suitable for controlling the environment temperature where the radiator to default environment temperature, and is controlled
Coolant is heated to default coolant temperature by heater processed；
Second control unit 42, suitable for according to the default environment temperature and default coolant temperature, control flows into
The coolant rate of the radiator；
First acquisition unit 43, suitable for obtaining the temperature of the radiator；
3rd control unit 44, suitable for the temperature according to the radiator, correspondingly adjustment flows into the cold of the radiator
But flow quantity and it is determined whether to enable fans corresponding with the radiator；Wherein：The fan is opposite with the radiator
Position is identical with the relative mounting positions on the vehicle, and the coolant for being suitable for flowing into the radiator radiates；
Determination unit 45, is adapted to detect for whether the radiator leaks, and according to testing result, determines the heat dissipation
The cold-resistant thermal shock resistance properties of device.
The environment temperature where the radiator is controlled by the first control unit 41 to default environment temperature, and is controlled
Coolant is heated to default coolant-temperature gage by heater, and the second control unit 42 is according to the default environment temperature and default
Coolant temperature, control flow into the coolant rate of the radiator, and first acquisition unit 43 obtains the temperature of the radiator,
3rd control unit 44 and then according to the temperature of the radiator, correspondingly adjustment flow into the radiator coolant rate and
It is determined whether to enable fan, it is then determined that unit 45 detects whether the radiator leaks, and according to testing result, determine
The cold-resistant thermal shock resistance properties of the radiator.Since the cooling control to radiator is realized by fan and environment temperature
, compared with the method for the water directly by inputting lower temperature, it is closer to that thermal shock situation is really caused to occur
Operating mode, therefore can improve radiator thermal shock test accuracy.
In specific implementation, the heater corresponds to the engine on vehicle suitable for the simulation radiator.
In specific implementation, first control unit 41, suitable for being set according to used environment temperature after vehicle release
Put the default environment temperature.
In specific implementation, the first acquisition unit 43, suitable for the temperature sensor by being arranged at the radiator
Place obtains the temperature of the radiator.
In specific implementation, what the temperature sensor was arranged at the radiator goes out coolant mouth flat tube position.
In specific implementation, the 3rd control unit 44, suitable for working as the temperature of the radiator higher than default first
Threshold value opens the fan, and the coolant rate for adjusting the inflow radiator is zero；When the temperature of the radiator is less than
Default second threshold closes the fan, and adjusts and flow into the coolant rate of the radiator as default cooling liquid stream
Amount, the first threshold are more than the second threshold.
In an embodiment of the present invention, the coolant is mixed mixed for ethylene glycol with water by one to one volume ratio
Close object.Those skilled in the art according to actual needs, can also select other kinds of coolant.
In specific implementation, the 3rd control unit 44 flows into institute suitable for passing through the first valve and the adjustment of the second valve
State the coolant rate of radiator；Wherein：First valve is triple valve, first valve and second valve, is fitted
In simulating the thermostat on the vehicle, when the temperature of the radiator is higher than the first threshold, first valve is opened
Door and second valve when the temperature of the radiator is less than the second threshold, keep first valve to open
State closes second valve.
In specific implementation, the heater, the first valve, the second valve, radiator, tank/overflow pipe, water pump
It couples successively, forms the first circuit；The heater, the first valve, water pump and heater couple successively, form second servo loop；
It is cycled after the heated device heating of current along first circuit or second servo loop；Wherein：The tank is suitable for and overflow pipe
The coolant that cooperation is adjusted in the radiator is in default water scope, and the water pump is suitable for the coolant being pumped into institute
State heater.
In specific implementation, described device further includes：Judging unit 46 and protection location 47, wherein：
The judging unit 46, suitable for judging to test whether abnormal conditions occur；
The protection location 47, suitable for when determining that abnormal conditions occurs in test, performing corresponding protection act.
In specific implementation, the abnormal conditions, including following at least one：It is more than default temperature threshold to cool down liquid temperature
Value, the pressure difference of the radiator are more than default threshold pressure differential, the liquid level of tank less than default level threshold.
In specific implementation, the protection act, including：Stop as water heating, control water pump is out of service, terminates and surveys
Examination.
For those skilled in the art is caused to more fully understand and realize the present invention, it has been illustrated below in the embodiment of the present invention
A kind of thermal shock test system of radiator, as shown in figure 5, the system comprises：The of heater 501, threeway valve arrangement
One valve 503, the second valve 505, fan 507, tank 508, overflow pipe 509, water pump 510 and above-described any
Test control device (not shown), wherein：
The heater 501, the first valve 503, the second valve 505, radiator 506, tank 508 and overflow pipe
At least one in 509, water pump 510 couples successively, forms the first circuit, and the heater 501 is located at first valve 503
Upstream, first valve 503 is located at the upstream of second valve 505, and second valve 505 is located at the radiator
506 upstream, the radiator 506 are located at the upstream of 508/ overflow pipe 509 of tank, and the tank 508/ overflows
Flow tube 509 is located at the upstream of the water pump 510, and the water pump 510 is located at the upstream of the heater 501.
In specific implementation, the heater 501, the first valve 503, water pump 510 couple successively, form second servo loop,
And the heater 501 is located at the upstream of first valve 503, first valve 503 is located at the upper of the water pump 510
Trip, the water pump 510 are located at the upstream of the heater 501, i.e., the heated device of current heat after along first circuit or the
Secondary circuit cycles.
The heater 501, suitable for simulating the engine on the vehicle；
The water pump 510, suitable for the coolant is pumped into the heater 501；
First valve 503 and second valve 505 suitable for simulating the thermostat on the vehicle, are dissipated when described
When the temperature of hot device 506 is higher than default first threshold, first valve 503 and second valve 505 are opened, when described
When the temperature of radiator 506 is less than default second threshold, first valve 503 is kept as opening, closes described the
Two valves 505；Wherein：The first threshold is more than the second threshold；
The fan 507, it is identical with the position being installed on the vehicle with the relative position of the radiator 506, it fits
It radiates in flow into the coolant of the radiator 506；
The tank 508 and overflow pipe 509, the coolant suitable for adjusting in the radiator 506 are in default
Cool down liquid measure scope.It should be noted that tank 508 and overflow pipe 509 are the components of the system, but it is every
In secondary water Xun Huan, current are only by one of tank 508 and overflow pipe 509.Such as the cooling water in radiator 506 compared with
It is more, flow into water pump 510 from the cooling water that radiator 506 flows out by overflow pipe 509.If cooling water in radiator 506 compared with
It is few, flow into water pump 510 from the cooling water that radiator 506 flows out by tank 508.
In an embodiment of the present invention, second valve 505 is solenoid valve.Those skilled in the art are according to actual need
Will, second valve 505 can also be arranged to other types of valve.
In specific implementation, the system can also include：First flowmeter 502, positioned at the downstream of the heater 501
And the upstream of first valve 503, flow through the cold of the pipeline between 501 and first valve 503 of heater suitable for testing
But flow quantity.
In specific implementation, the system can also include：Second flowmeter 504 in the second servo loop, and is located
In the downstream of first valve 503 and the upstream of second valve 505, suitable for test flow through first valve 503 with
The coolant rate of pipeline between second valve 505.
It describes in detail below with reference to Fig. 5 to the operation principle of the system：
The system diagram of test can be built according to Fig. 5 first, system building is needed radiator 506, fan 507, electromagnetism
Valve, tank 508, the first valve 503 and heater 501 are attached by water pipe, it is ensured that will not be because during experiment
System building is improper to cause leakage phenomenon.Wherein：Heater 501 mainly controls the water temperature of entire pilot system, the first valve
503 adjust to 50% aperture, and water pump 510 is always kept in a fixed state rotating speed in thermal shock test, it is ensured that flow into radiator 506
Water flow is not less than 8L/min, while is also not higher than 15L/min.Followed by experiment room conditioning, entire experimental enviroment is dropped
Temperature is monitored 506 surface measuring point of radiator by temperature sensor to -10 DEG C, and the temperature sensor is arranged in
Radiator 506 utilizes the temperature of the radiator 506 measured to fan 507 and solenoid valve in water outlet flat tube direction position
Open and close and controlled, specifically, when temperature can open cooling fan 507, closing solenoid valve higher than 82 DEG C；
Fan 507, opens solenoid valve can be closed when temperature is less than -1 DEG C, these control requirements are completed by control device.
In specific implementation, the monitoring of data can be carried out to entirely testing, and stores and record what test measurement generated
The Test Information generated during various test datas and test run, such as entire experiment can monitor water flow, radiator
The data such as 506 inlet temperatures, 506 outlet temperature of radiator, 506 surface temperature of radiator, 507 voltage of fan.
In specific implementation, can with every 4 it is small when to whole system carry out an inspection, confirm 506 flat tube of radiator at be
It is no to have leakage, it as leaked, that is, determines test failure, stops automatic operating and statistical test number.
In order to avoid there is dangerous working condition, in specific implementation, rack abnormal conditions can be carried out before the test
Protection setting, involved abnormal protection includes water temperature protection, water tank pressure difference transfinites protection, kettle inside liquid level transfinite protection.
Not more than 110 DEG C of water temperature, water tank pressure difference highest must not exceed 1100mbar, and kettle minimum liquid level must not be less than 110mm.Examination
The protection act involved by protection system is tested including the stopping of heater 501 is heated, water pump 510 is out of service and emergency shutdown.
In specific implementation, control device is further adapted for experimental design importing, experiment programming, test run, test measurement, number
According to communication.Specifically include the data file imported for experimental design operating point, operation test program, control environment temperature, heat
Water boundaries temperature, 506 flow of radiator, electromagnetic valve switch, test run condition includes hot water border water temperature, water tank inside is surveyed
Point temperature, 506 flow of radiator pass through flow, 507 voltage of fan, the door aperture of the first valve 503, electromagnetic valve switch etc..
It should be noted that before the test, can operating mode be stopped according to the startup of engine, judge engine calibrating test
Involved various experiment borders in operational process, including default experiment border and service condition border, such as hot water border
Water temperature, the temperature of the unlatching of fan 507,507 closing temperature of fan, solenoid valve opening temperature, solenoid valve closing temperature, solenoid valve are opened
Open rear water box flow etc..
To sum up, radiator thermal shock test system of the invention can import different radiator experimental design operating points,
Automatic collection test data carries out experiment protection automatically, and experiment is whole to be not required human intervention and operation, avoids human factor
Influence, can improve test efficiency and test mass, save testing expenses.And radiator can be really reduced in vehicle
The operating mode of thermal shock, therefore the accuracy of test can be improved.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
Relevant hardware to be instructed to complete by program, which can be stored in computer readable storage medium, to store
Medium can include：ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Any those skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the scope of restriction.
Claims (27)
1. a kind of thermal shock test method of radiator, which is characterized in that including：
The environment temperature where the radiator is controlled to default environment temperature, and it is pre- that heater is controlled to be heated to coolant
If coolant temperature；
According to the default environment temperature and default coolant temperature, control flows into the coolant rate of the radiator；
Obtain the temperature of the radiator；
According to the temperature of the radiator, correspondingly adjustment flows into the coolant rate of the radiator and it is determined whether to enable wind
Fan；Wherein：The fan, it is identical with the relative mounting positions on vehicle with the relative position of the radiator, it is suitable for flowing
The coolant for entering the radiator radiates；
It detects whether the radiator leaks, and according to testing result, determines the cold-resistant thermal shock resistance properties of the radiator.
2. the thermal shock test method of radiator according to claim 1, which is characterized in that the heater is suitable for
It simulates the radiator and corresponds to engine on vehicle.
3. the thermal shock test method of radiator according to claim 1, which is characterized in that according to institute after vehicle release
The environment temperature used sets the default environment temperature.
4. the thermal shock test method of radiator according to claim 1, which is characterized in that by being arranged at described dissipate
The temperature of the radiator is obtained at the temperature sensor of hot device.
5. the thermal shock test method of radiator according to claim 4, which is characterized in that the temperature sensor is set
Be placed in the radiator goes out coolant mouth flat tube position.
6. the thermal shock test method of radiator according to claim 1, which is characterized in that described according to the heat dissipation
The temperature of device, correspondingly adjustment flows into the coolant rate of the radiator and it is determined whether to enable corresponding with the radiator
Fan, including：
When the temperature of the radiator is higher than default first threshold, the fan is opened, and adjusts and flows into the radiator
Coolant rate is zero；
When the temperature of the radiator is less than default second threshold, the fan is closed, and adjusts and flows into the radiator
Coolant rate is default coolant rate, and the first threshold is more than the second threshold.
7. according to the thermal shock test method of claim 1~6 any one of them radiator, which is characterized in that described cold
But the mixture that liquid is mixed for ethylene glycol with water by one to one volume ratio.
8. the thermal shock test method of radiator according to claim 6, which is characterized in that pass through the first valve and
The adjustment of two valves flows into the coolant rate of the radiator；Wherein：First valve be triple valve, first valve with
Second valve, suitable for simulating the thermostat on the vehicle, when the temperature of the radiator is higher than the first threshold,
First valve and second valve are opened, when the temperature of the radiator is less than the second threshold, described in holding
First valve is opening, closes second valve.
9. the thermal shock test method of radiator according to claim 8, which is characterized in that the heater, first
Valve, the second valve, radiator, tank/overflow pipe, water pump couple successively, form the first circuit；The heater,
One valve, water pump and heater couple successively, form second servo loop；Along first circuit or the after the heating of current heated device
Secondary circuit cycles；Wherein：The coolant that the tank is suitable for adjusting with overflow pipe cooperation in the radiator is in default
Water scope, the water pump is suitable for the coolant being pumped into the heater.
10. the thermal shock test method of radiator according to claim 9, which is characterized in that further include：
Judgement tests whether abnormal conditions occur；
When determining that abnormal conditions occurs in test, corresponding protection act is performed.
11. the thermal shock test method of radiator according to claim 10, which is characterized in that the abnormal conditions,
Including following at least one：It is more than default pressure difference threshold that liquid temperature, which is cooled down, more than the pressure difference of default temperature threshold, the radiator
Value, the liquid level of tank are less than default level threshold.
12. the thermal shock test method of radiator according to claim 10, which is characterized in that the protection act,
Including：Stop as water heating, control water pump is out of service, terminates test.
13. a kind of thermal shock test control device of radiator, which is characterized in that including：
First control unit, suitable for controlling the environment temperature where the radiator to default environment temperature,
And coolant is heated to default coolant temperature by control heater；
Second control unit, suitable for according to the default environment temperature and default coolant temperature, control flows into described dissipate
The coolant rate of hot device；
First acquisition unit, suitable for obtaining the temperature of the radiator；
3rd control unit, suitable for the temperature according to the radiator, correspondingly adjustment flows into the cooling liquid stream of the radiator
It measures and it is determined whether to enable fans corresponding with the radiator；Wherein：The fan, with the relative position of the radiator with
Relative mounting positions on vehicle are identical, and the coolant for being suitable for flowing into the radiator radiates；
Determination unit, is adapted to detect for whether the radiator leaks, and according to testing result, determines the resistance to of the radiator
Thermal shock performance.
14. the thermal shock test control device of radiator according to claim 13, which is characterized in that the heating
Device corresponds to the engine on vehicle suitable for the simulation radiator.
15. the thermal shock test control device of radiator according to claim 13, which is characterized in that first control
Unit processed, suitable for setting the default environment temperature according to used environment temperature after vehicle release.
16. the thermal shock test control device of radiator according to claim 13, which is characterized in that described first obtains
Unit is taken, suitable for obtaining the temperature of the radiator at the temperature sensor of the radiator by being arranged at.
17. the thermal shock test control device of radiator according to claim 16, which is characterized in that the temperature passes
What sensor was arranged at the radiator goes out coolant mouth flat tube position.
18. the thermal shock test control device of radiator according to claim 13, which is characterized in that the 3rd control
Unit processed suitable for working as the temperature of the radiator higher than default first threshold, opens the fan, and adjusts and flow into described dissipate
The coolant rate of hot device is zero；When the temperature of the radiator is less than default second threshold, the fan is closed, and is adjusted
The coolant rate of the radiator is flowed into as default coolant rate, the first threshold is more than the second threshold.
19. according to the thermal shock test control device of claim 13~18 any one of them radiator, which is characterized in that
The mixture that the coolant is mixed for ethylene glycol with water by one to one volume ratio.
20. the thermal shock test control device of radiator according to claim 18, which is characterized in that the 3rd control
Unit processed flows into the coolant rate of the radiator suitable for passing through the first valve and the adjustment of the second valve；Wherein：Described first
Valve is triple valve, first valve and second valve, suitable for simulating the thermostat on the vehicle, when the heat dissipation
When the temperature of device is higher than the first threshold, first valve and second valve are opened, when the temperature of the radiator
During less than the second threshold, first valve is kept to close second valve for opening.
21. the thermal shock test control device of radiator according to claim 20, which is characterized in that the heating
Device, the first valve, the second valve, radiator, tank/overflow pipe, water pump couple successively, form the first circuit；It is described to add
Hot device, the first valve, water pump couple successively, form second servo loop；Along first circuit or the after the heating of current heated device
Secondary circuit cycles；Wherein：The coolant that the tank is suitable for adjusting with overflow pipe cooperation in the radiator is in default
Water scope, the water pump is suitable for the coolant being pumped into the heater.
22. the thermal shock test control device of radiator according to claim 21, which is characterized in that further include：Sentence
Disconnected unit and protection location, wherein：
The judging unit, suitable for judging to test whether abnormal conditions occur；
The protection location, suitable for when determining that abnormal conditions occurs in test, performing corresponding protection act.
23. the thermal shock test control device of radiator according to claim 22, which is characterized in that the exception feelings
Condition, including following at least one：It is more than default pressure difference that liquid temperature, which is cooled down, more than the pressure difference of default temperature threshold, the radiator
Threshold value, the liquid level of tank are less than default level threshold.
24. the thermal shock test control device of radiator according to claim 22, which is characterized in that the protection is dynamic
Make, including：Stop as water heating, control water pump is out of service, terminates test.
25. a kind of thermal shock test system of radiator, which is characterized in that including：First valve of heater, threeway valve arrangement
Door, the second valve, fan, tank, overflow pipe, water pump and claim 13~24 any one of them testing and control dress
It puts；Wherein：
The heater, the first valve, the second valve, radiator, tank/overflow pipe, water pump couple successively, form first
Circuit,
The heater, the first valve, water pump couple successively, form second servo loop, along described the after the heating of current heated device
Primary Ioops or second servo loop Xun Huan；
The heater, suitable for simulating the engine on the vehicle；
The water pump, suitable for the coolant is pumped into the heater；
First valve and second valve, suitable for simulating the thermostat on the vehicle, when the temperature of the radiator
During higher than default first threshold, first valve and second valve are opened,
When the temperature of the radiator is less than default second threshold, first valve is kept to close institute for opening
State the second valve；Wherein：The first threshold is more than the second threshold；
The fan, it is identical with the position being installed on the vehicle with the relative position of the radiator, it is suitable for flowing into institute
The coolant for stating radiator radiates；
The tank and overflow pipe, the coolant suitable for adjusting in the radiator are in default cooling liquid measure scope.
26. the thermal shock test system of radiator according to claim 25, which is characterized in that further include：
Positioned at the downstream of the heater and the upstream of first valve, the heating is flowed through suitable for test for first flowmeter
The coolant rate of pipeline between device and the first valve.
27. the thermal shock test system of radiator according to claim 25, which is characterized in that further include：
Second flowmeter, in the second servo loop, and in first valve downstream and second valve it is upper
Trip flows through the coolant rate of the pipeline between first valve and second valve suitable for test.
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