CN101793652B - Heat exchanger performance experiment device - Google Patents
Heat exchanger performance experiment device Download PDFInfo
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- CN101793652B CN101793652B CN 201010111399 CN201010111399A CN101793652B CN 101793652 B CN101793652 B CN 101793652B CN 201010111399 CN201010111399 CN 201010111399 CN 201010111399 A CN201010111399 A CN 201010111399A CN 101793652 B CN101793652 B CN 101793652B
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Abstract
The invention discloses a heat exchanger performance experiment device and in particular relates to an experiment device for testing the pressure pulse resistance and the cold-hot alternation resistance of the heat exchanger. The device comprises a cold oil tank, a hot oil tank, a measurement and control system, a pumping set and pipelines. A cold subsystem and a hot subsystem which are basically symmetric coexist in a system, cold and hot media reach the required high pressure and low pressure respectively through pressure-regulating devices in own subsystems, and the high and low pressure alternation cycle is regulated by a switching device. A heat exchanger reliability test bed established by the new technology can not only complete independent basic tests of pressure alternation, cold-hot alternation and the like but also complete the coupling tests with temperature and pressure changed simultaneously, thereby simulating combined impact borne by the heat exchanger when in use. Compared with the currently adopted testing technology of mutual separation of environment variables, the technology of the invention can reflect the reliability of the heat exchanger more truly and has better guiding effects on design, production and utilization of the heat exchanger.
Description
Technical field
The present invention relates to a kind of experimental provision, be specifically related to a kind of experimental provision of realizing compression resistance pulse and cold-hot alternation and the test of alternating hot and cold coupling performance of heat interchanger.
Background technology
The vehicle cooling system is as the important component part of power assist system, its operating mode of living in is very complicated, changeable pressure pulse and alternating hot and cold operating mode have determined that liquid state or gaseous medium pressure must born in the inside of cooling system heat interchanger thin-wall construction, the temperature height changes repeatedly and the impact that causes, cooling system is produced fatigure failure, particularly external pressure peak value of pulse often surpass heat interchanger authorized pressure value; And thermal shock can produce continuous alternating thermal stress to the temperature variation sensitizing range of heating radiator such as fin and composite plate, argon arc welding district, will have a strong impact on engine health in case the problems such as leakage, explosion occur, therefore verify that cooling system heat interchanger strength reliability is very necessary.
At present, the reliability testing of the compression resistance pulse performance of heat exchanger and cold-hot alternation performance both at home and abroad all be by two separately fully independently pilot system carry out.The weak point of this measuring technology, at first be can't the real simulation heat interchanger the compound variation of its inner suffered pressure and temperature when reality is used, also can't satisfy have large volume, the testing requirements of the special vehicle heat interchanger of large flow, high-temperature characteristics.Secondly, because these two required instrument and equipments of fail-test have very large repeatability, therefore caused to a certain extent the wasting of resources.
Summary of the invention
For more truly examining the serviceable life of heat interchanger under the vehicle motor complex working condition, fully examine the reliability of heat interchanger, the present invention proposes the durable pulse of a kind of pressure and alternating hot and cold coupling technique, the reliability index that this technology proposes cooling system under the limiting condition condition by the simulation special vehicle requires to carry out continuous bench test test, satisfies the index request of real vehicle adaptive capacity to environment to guarantee cooling system.It is finished the durable pulse of pressure and two fail-test contents of alternating hot and cold by a test unit.Concrete scheme is as follows: a kind of heat exchanger performance experiment device, comprise control system, the deep fat case that connects successively, thermal cycle pipeline and test pipeline, and it is characterized in that, be connected with cold oil case and cold circulation line on the described test pipeline.
Another optimal way of the present invention: begin to be equipped with successively oil screen A, gate valve/electric control valve A, frequency conversion oil pump, retaining valve A, electric control valve group, reversal valve A and gate valve/electric control valve E by the deep fat case on the described thermal cycle pipeline, the oil inlet end of electric control valve group is equipped with accumulator A and pressure transducer A, and endpiece is equipped with accumulator B and pressure transducer B.
Another optimal way of the present invention: described cold circulation line and thermal cycle pipeline installing component, position order is in full accord.
Another optimal way of the present invention: described test pipeline comprises reversal valve B, oil screen B, gate valve/electric control valve G, gate valve/electric control valve F and retaining valve B, the retaining valve C in parallel that connects successively, between gate valve/electric control valve G and gate valve/electric control valve F, test specimen is installed, the from outside of reversal valve is connected with retaining valve B, the retaining valve B of test pipeline respectively in described thermal cycle pipeline, the cold circulation line, and the reversal valve B in the described test pipeline is connected on the scavenge pipe of the scavenge pipe of deep fat case and cold oil case.
Another optimal way of the present invention: oil outlet end mounting temperature sensor B, the pressure transducer C of described test specimen, oil inlet end mounting temperature sensor C, pressure transducer D.
Another optimal way of the present invention: liquid level sensor and temperature sensor A are installed on described deep fat case and the cold oil case.
Another optimal way of the present invention: in the described deep fat case well heater is installed, in the described cold oil case condenser is installed.
The present invention is integrated in cold and hot two kinds of loop tests in the device, not only can finish the independently fundamental test such as pressure alternation and alternating hot and cold, can also finish the coupling test that temperature and pressure changes simultaneously, namely by the multiple combination form between temperature (high temperature/low temperature/constant temperature) and the pressure (constant voltage/transformation), the compound variation of temperature and pressure during the simulating vehicle engine start/stop.Technical scheme of the present invention and the environmental variance of present employing measuring technology disconnected from each other is compared, and can reflect more realistically the unfailing performance of heat interchanger, and the design of heat exchanger, production and use have better directive function.The generation of the durable pulse of pressure and alternating hot and cold coupling technique makes the Heat Exchanger Reliability research technique rise to a new levels, has filled up the blank at this technical elements both domestic and external.Secondly, the fail-test of heat interchanger compression resistance pulse performance and cold-hot alternation performance is carried out simultaneously, and carries out respectively these two tests and compares and can greatly save test period and cost.For example, regulation compression resistance pulse performance test in " JB/T 10506-2005 supercharging of internal combustion engine air cooler technical conditions ", cycle index 2 * 10
4Inferior, pressure alternating cycles 3s～6s; Cold-hot alternation performance test, cycle index 3000 times, the temperature alternating cycle is about 3min～5min, and hence one can see that, and finishing these two tests needs 200h～300h.And therefore the durable pulse of pressure and alternating hot and cold coupling technique can reach identical test effect by shorter test period owing to the examination intensity that has fundamentally improved heating radiator.For this length consuming time, the high test of power consumption, shorten test period and seem very meaningful.
Description of drawings
Fig. 1 connection diagram of the present invention
Among the figure: 1-deep fat case, the 2-well heater, 3-cold oil case, the 4-condenser, the 5-testpieces, 6-goes out fuel tank, the 7-hydraulic pressure transducer, 8-temperature sensor A, 9 temperature sensor B, 10-temperature sensor C, 11-oil screen A, 12-oil screen B, 13-gate valve/electric control valve A, 14-gate valve/electric control valve B, 15-gate valve/electric control valve C, 16-gate valve/electric control valve D, 17-gate valve/electric control valve E, 18-gate valve/electric control valve F, 19-gate valve/electric control valve G, 20-frequency conversion oil pump, 21-retaining valve A, 22-retaining valve B, 23-retaining valve C, 24-accumulator A, 25-accumulator B, 26-pressure transducer A, 27-pressure transducer B, 28-oil screen C, 29-pressure transducer D, 30-electric control valve group, 31-reversal valve A, 32 reversal valve B
Embodiment
As shown in Figure 1, experimental provision of the present invention comprises control system, deep fat case and thermal cycle pipeline, cold oil case and cold circulating line and test pipeline.
The test pipeline comprises reversal valve B32, oil screen B12, gate valve/electric control valve G19, gate valve/electric control valve F18 and retaining valve B22, the retaining valve C23 in parallel that connects successively, heat interchanger test specimen 5 to be tested is installed between gate valve/electric control valve G19 and gate valve/electric control valve F18, oil outlet end mounting temperature sensor B9, the pressure transducer C28 of test specimen 5, test specimen 5 oil inlet end mounting temperature sensor C10, pressure transducer D29.
What the monitoring Medium Oil was installed on the deep fat case has liquid level sensor 7 and a temperature sensor A8, and well heater 2 is installed in the deep fat case 1, and liquid level sensor and temperature sensor are installed on the cold oil case 3, and condenser 4 is installed in the cold oil case 3.Deep fat case and cold oil case heat Medium Oil respectively and lower the temperature.
Structure and the parts of thermal cycle pipeline and cold circulation line are in full accord, below mainly elaborate with heat circulation pipe line structure, parts.
By 1 beginning of deep fat case oil screen A11, gate valve/electric control valve A13, frequency conversion oil pump 20, retaining valve A21, electric control valve group 30, reversal valve A31 and gate valve/electric control valve E17 are installed successively on the thermal cycle pipeline, the oil inlet end of electric control valve group 30 is equipped with accumulator A24 and pressure transducer A26, and endpiece is equipped with accumulator B25 and pressure transducer B27.Deep fat case 1 connects the case 6 of draining the oil by gate valve/electric control valve B14, and the case 6 of draining the oil is used for accepting the Medium Oil of emitting of deep fat case and cold oil case.
The thermal cycle pipeline be connected circulation line and connect with the retaining valve B22 that is connected pipeline, retaining valve C23 respectively by the from outside of reversal valve A31.Between thermal cycle pipeline and the test pipeline gate valve/electric control valve C15, gate valve/electric control valve D16 are installed and form liquid equalizing valve group.
The durable pulse of pressure and alternating hot and cold coupling test are to realize on the basis that two cold and hot systems merge mutually, experimental provision is monitored and is controlled by control system, sets the temperature peak of test and valley, alternating temperature cycle, pressure peak and valley, transformation cycle, test number (TN) by control system.Wherein the corresponding data collected respectively in the cold and hot system of each liquid level sensor, temperature sensor and pressure transducer uploads to control system, the real-time parameter that the control system system passes back according to temperature sensor, the power of well heater, condenser, the aperture of electric control valve are regulated, thereby reach the purpose of adjusting temperature; Simultaneously, the real-time parameter that control system is also passed back according to pressure transducer is regulated the rotating speed of oil pump, the aperture of each electric control valve, thereby reaches the purpose of adjusting the flow controlled pressure; Hot and cold oil circulates in pipeline separately, and by the entire frequency of opening of electric control valve group, reversal valve, control enters the pressure of the cold and hot oil of test specimen, the change frequency of temperature.The cold and hot system of whole process carries out Impurity removal to guarantee the cleaning of oil by oil screen.Thereby realize in real time control, adjust process of the test.
The below realizes that with this device the course of work of three kinds of test methods illustrates one by one respectively:
The durable pulse testing of pressure: realize by hydraulic-driven, only relate to heat circulating system.At first utilize control system to determine peak value and valley, pressure pulse cycle and the test number (TN) of the oil temperature of Medium Oil (constant temperature), pressure.After on-test, instruction according to control system, the well heater 2 of deep fat case 1 is started working, reversal valve A31 on the thermal cycle pipeline connects gate valve/electric control valve E17, make Medium Oil circulating-heating in the thermal cycle pipeline, after the temperature of Medium Oil all reaches setting value, adjust the reversal valve B22 that reversal valve A31 connects the test pipeline, gate valve on the thermal cycle pipeline/electric control valve A13 and frequency conversion oil pump 20 are regulated the flow of Medium Oil, two-way electric control valve group 30 is alternately opened entire with different apertures respectively, Medium Oil was entered in the tested test specimen 5 according to pressure and the transformation cycle set, in this process, reversal valve B32 keeps connecting thermal cycle pipeline one side, makes from test specimen 5 Medium Oil out and flows back to the deep fat case.
Cold-hot alternative test: peak value and valley and the test number (TN) of at first determining the cycle of cold and hot oils alternation, the pressure of cold and hot oil (constant voltage), temperature by control system.After on-test, instruction according to control system, the well heater 2 of deep fat case 1 and the condenser 4 of cold oil case 3 are worked simultaneously, adjust the temperature of each circulation line medium oil, reversal valve A31 in thermal cycle pipeline and the cold circulation line keeps connecting circulation line separately, and namely deep fat, cold oil are only circulating in fuel tank and the internal duct separately.After thermal cycle pipeline and cold circulation line medium oil temperature all reach setting value, cycle and the pressure set by control system replace by in the reversal valve A31 inflow test specimen 5 separately, when the thermal cycle pipeline is connected test specimen 5, cold circulation line disconnects with test and being connected of pipeline carries out interior circulation, and when cold circulation line was connected test specimen 5, the thermal cycle pipeline disconnected with being connected of pipeline of test and carries out interior circulation.
The durable pulse of pressure and alternating hot and cold coupling test: set the temperature peak of test and valley, alternating temperature cycle, pressure peak and valley, transformation cycle, test number (TN) by control system.After on-test, instruction according to control system, well heater 2 and condenser 4 begin to adjust the temperature of deep fat case 1 and cold oil case 3 interior Medium Oils, reversal valve A31 in this process in thermal cycle pipeline and the cold circulation line keeps connecting interior circulation separately, instant heating Medium Oil and cold Medium Oil do not enter test specimen, only circulate in separately fuel tank and internal duct.After temperature all reaches setting value, cold circulation line state remains unchanged, the reversal valve A31 of thermal cycle pipeline connects the test pipeline, gate valve/electric control valve A13 and frequency conversion oil pump 20 are regulated the Medium Oil flow, two-way electric control valve group 30 is alternately opened entire with different apertures respectively, the Medium Oil of heat was entered in the tested test specimen 5 according to pressure and the transformation cycle set, and reversal valve B32 keeps connecting thermal cycle pipeline one side in this process, makes from test specimen Medium Oil out and flows back to the deep fat case.Behind half alternating temperature end cycle, deep fat way reversing valve A31 disconnects with the test pipeline and connects interior circulation, the reversal valve A31 of cold circulation line connects the test pipeline, cold Medium Oil was entered in the tested test specimen 5 according to pressure and the transformation cycle set, reversal valve B32 connects cold circulation line one side, the principle identical with the thermal cycle pipeline carried out the variation in pressure, cycle, in half alternating temperature cycle after finishing, forms the coupling cycle of a complete temperature and pressure alternation.
Claims (1)
1. a heat exchanger performance experiment device comprises control system, the deep fat case (1) that connects successively, thermal cycle pipeline and test pipeline, it is characterized in that, is connected with cold oil case (3) and cold circulation line on the described test pipeline;
Begin to be equipped with successively oil screen A (11), gate valve/electric control valve A (13), frequency conversion oil pump (20), retaining valve A (21), electric control valve group (30), reversal valve A (31) and gate valve/electric control valve E (17) by the deep fat case on the described thermal cycle pipeline, the oil inlet end of electric control valve group (30) is equipped with accumulator A (24) and pressure transducer A (26), and endpiece is equipped with accumulator B (25) and pressure transducer B (27);
Described cold circulation line and thermal cycle pipeline installing component, position order is in full accord;
Described test pipeline comprises the reversal valve B (32) that connects successively, oil screen B (12), gate valve/electric control valve G (19), gate valve/electric control valve F (18) and retaining valve B (22) in parallel, retaining valve C (23), between gate valve/electric control valve G (19) and gate valve/electric control valve F (18), test specimen (5) is installed, described thermal cycle pipeline, in the cold circulation line reversal valve A (31) from outside respectively with the test pipeline retaining valve B (22), retaining valve C (23) connects, and the reversal valve B (32) in the described test pipeline is connected on the scavenge pipe of the scavenge pipe of deep fat case (1) and cold oil case (3);
The oil outlet end mounting temperature sensor B (9) of described test specimen (5), pressure transducer C (28), oil inlet end mounting temperature sensor C (10), pressure transducer D (29);
Liquid level sensor (7) and temperature sensor A (8) are installed on described deep fat case and the cold oil case;
Well heater (2) is installed in the described deep fat case (1), condenser (4) is installed in the described cold oil case (3).
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| CN 201010111399 CN101793652B (en) | 2010-02-10 | 2010-02-10 | Heat exchanger performance experiment device |
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| CN 201010111399 CN101793652B (en) | 2010-02-10 | 2010-02-10 | Heat exchanger performance experiment device |
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| CN101793652A CN101793652A (en) | 2010-08-04 |
| CN101793652B true CN101793652B (en) | 2013-02-20 |
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Families Citing this family (18)
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| CN101982756B (en) * | 2010-10-25 | 2012-07-04 | 上海理工大学 | Cold and hot alternation impact test device |
| CN102981077B (en) * | 2012-11-27 | 2015-07-08 | 芜湖美的厨卫电器制造有限公司 | High-low pressure impact tester and testing method thereof |
| CN103323358A (en) * | 2013-06-28 | 2013-09-25 | 南方英特空调有限公司 | Thermal cycle test equipment and test method |
| CN103398938A (en) * | 2013-07-30 | 2013-11-20 | 长城汽车股份有限公司 | Internal corrosion test bed for heat exchanger |
| CN103558046B (en) * | 2013-11-08 | 2016-04-06 | 上海市特种设备监督检验技术研究院 | A kind of heat exchanger energy efficiency evaluation system |
| CN104634595A (en) * | 2013-11-13 | 2015-05-20 | 海尔集团公司 | Heat exchanger performance testing system and testing method thereof |
| CN104596788B (en) * | 2015-01-30 | 2017-08-11 | 上海电气凯士比核电泵阀有限公司 | Experimental rig for testing high voltage cooler performance |
| CN105973298A (en) * | 2016-05-11 | 2016-09-28 | 上海瀚海检测技术股份有限公司 | Method for detecting reliability of automobile pipeline in quadruple comprehensive test condition |
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| CN106644547B (en) * | 2017-01-03 | 2024-05-17 | 无锡塔尔基热交换器科技有限公司 | Pulse simulator |
| CN107288956B (en) * | 2017-06-26 | 2023-06-23 | 天津航天瑞莱科技有限公司 | High-temperature oil pressure pulsation system |
| CN107631891A (en) * | 2017-08-08 | 2018-01-26 | 华晨汽车集团控股有限公司 | The method of testing of engine with supercharger cooling system function |
| CN112595523A (en) * | 2020-11-23 | 2021-04-02 | 一汽解放汽车有限公司 | PVT test system |
| CN112629865B (en) * | 2020-12-30 | 2023-12-12 | 重庆隆鑫通航发动机制造有限公司 | Temperature impact experiment system and method for testing durability of engine |
| CN113218794A (en) * | 2021-04-21 | 2021-08-06 | 大连理工大学 | High-temperature fatigue test system for cavity container |
| CN114166480B (en) * | 2021-11-04 | 2024-04-26 | 珠海格力智能装备有限公司 | Device and method for testing service life of cooler |
| CN113984316B (en) * | 2021-12-24 | 2022-04-05 | 苏州英特模汽车科技有限公司 | Automobile part pressure pulsation test device |
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