CN103994879A - Piston thermal fatigue test apparatus - Google Patents
Piston thermal fatigue test apparatus Download PDFInfo
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- CN103994879A CN103994879A CN201410155758.2A CN201410155758A CN103994879A CN 103994879 A CN103994879 A CN 103994879A CN 201410155758 A CN201410155758 A CN 201410155758A CN 103994879 A CN103994879 A CN 103994879A
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Abstract
The invention relates to a piston thermal fatigue test apparatus. A cylinder sleeve (6) is sleeved by a coat (12) and rotates with the coat (12) to form an enclosed area water chamber (7), the water chamber (7) communicates with a constant temperature water tank (14), a gland (2) is connected with the port of the cylinder sleeve (6) and is crimped on the coat (12), a piston (9) is fixed inside the cylinder sleeve (6) through a bearer (11) and a compaction nut (13), a constant temperature oil tank (15) communicates with an oil chamber (8) inside the piston (9), a laser emitter (16) is fixed above the piston (9), and an infrared temperature sensor (17) is fixed to a periphery support. The piston thermal fatigue test apparatus has the advantages of high operability, real-time control and the like, and can effectively simulate the heating and cooling states of the piston in an engine.
Description
Technical field
The invention belongs to Piston Thermal Fatigue Test method and technology field, be specifically related to a kind of Piston Thermal Fatigue Test device.
Background technology
Piston is the key components and parts of engine, bears very high thermal load in engine operation process, the fire damage Frequent Troubles bringing out thus.And Thermal Fatigue Damage is the main failure forms of piston thermal damage.At present piston heat fatigue strength assessment method is mainly contained to overall test and component-level test.Overall test, the periodicity of considering test is long, expense is high, test situation is complicated, once the factors such as service condition, structure, technique, material change, and need to re-start test, and it are very large to grasp piston heat fatigue Cracking Mechanism difficulty by overall test.Modelling technique is a kind of effective research means.
Simulation test is taked alternately heating, cooling mode, makes temperature circulation change between the maximum temperature arranging and minimum temperature of piston, until the cycle index of regulation is observed the tendency that microfissure produces.The order of accuarcy key of simulation test is piston heating, cooling speed and the type of cooling, and thermal source is difficult to simulate be completely truly the heated situation of piston in engine.Data demonstration, in engine, the heat of piston about 90% is taken away by cooling oil chamber, and 10% heat passes to cylinder jacket by piston ring, by chilled water, is taken away, and therefore, can simulate more really piston heat fatigue phenomenon by the mode of simulation piston heat transmission.
Summary of the invention
The present invention causes the problem of piston failure in order to solve piston heat fatigue damage, and has proposed a kind of Piston Thermal Fatigue Test device.This device can be simulated the heat fatigue phenomenon of piston truly, for research piston heat fatigue Cracking Mechanism provides effective means.
The technical solution used in the present invention: a kind of Piston Thermal Fatigue Test device, it comprises gland 2, cylinder jacket 6, piston 9, tubing sub 10, bearing 11, overcoat 12, clamping nut 13, constant temperature water tank 14, constant-temperature oil tank 15, generating laser 16 and infrared temperature measurement device 17, cylinder jacket 6 is linked in overcoat 12, and change into a closed area water cavity 7 with overcoat 12, water cavity 7 is communicated with constant temperature water tank 14, gland 2 is connected with cylinder jacket 6 ports, and be crimped on overcoat 12, piston 9 is fixed on cylinder jacket 6 inside by bearing 11 and clamping nut 13, constant-temperature oil tank 15 is communicated with the oil pocket 8 of piston 9 inside, generating laser 16 is fixed on the top of piston 9, infrared temperature measurement device 17 is fixed in peripheral frame.
Further, water cavity 7 is communicated with by water pipe head 5 with constant temperature water tank 14, and constant-temperature oil tank 15 is communicated with by tubing sub 10 with the oil pocket 8 of piston 9 inside.
Further, described constant temperature water tank 14 is comprised of water tank 18 and the PID controller 19 and the first outer circulation refrigeratory 20 that are arranged on water tank 18 inside.
Further, described constant-temperature oil tank 15 is comprised of fuel tank 21 and the 2nd PID controller 22 and the second outer circulation refrigeratory 23 that are arranged on fuel tank 21 inside.
The present invention compared with prior art its beneficial effect is: the present invention is by design constant temperature cooling oil box, constant temp cooling water case, and employing laser is thermal source, has effectively simulated the heat fatigue of piston; The advantages such as that the present invention has is workable, real-time control, can effectively simulate piston being heated in engine, the state of cooling.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
A kind of Piston Thermal Fatigue Test device, it comprises gland 2, cylinder jacket 6, piston 9, tubing sub 10, bearing 11, overcoat 12, clamping nut 13, constant temperature water tank 14, constant-temperature oil tank 15, generating laser 16 and infrared temperature measurement device 17, cylinder jacket 6 is linked in overcoat 12, and change into a closed area water cavity 7 with overcoat 12, water cavity 7 is communicated with constant temperature water tank 14, gland 2 is connected with cylinder jacket 6 ports, and be crimped on overcoat 12, piston 9 is fixed on cylinder jacket 6 inside by bearing 11 and clamping nut 13, constant-temperature oil tank 15 is communicated with the oil pocket 8 of piston 9 inside, generating laser 16 is fixed on the top of piston 9, infrared temperature measurement device 17 is fixed in peripheral frame.Described water cavity 7 is communicated with by water pipe head 5 with constant temperature water tank 14, and constant-temperature oil tank 15 is communicated with by tubing sub 10 with the oil pocket 8 of piston 9 inside.Described constant temperature water tank 14 is comprised of water tank (18) and the PID controller 19 and the first outer circulation refrigeratory 20 that are arranged on water tank 18 inside.Described constant-temperature oil tank 15 is comprised of fuel tank 21 and the 2nd PID controller 22 and the second outer circulation refrigeratory 23 that are arranged on fuel tank 21 inside.
System work process: what first connect nonstandard design enters return pipe, oil pipe, and piston 9 is fixed in cylinder jacket 6, then adjusts laser instrument 16 positions and infrared thermometer 17 monitored areas, as shown in Figure 1.Open water tank, oil tank heating apparatus, after temperature reaches design temperature, open chilled water, cold oil, circulating cooling piston; Open laser instrument 16, infrared thermometer 17 data monitoring softwares, heat fatigue and control software, make piston 9 temperature circulation change between the highest, minimum set temperature.
In test, piston 9 temperature-rise periods, laser instrument 16 1 direct-opens, when piston 9 temperature are raised to design temperature, laser shutdown, piston 9 samples are cooling, and when temperature is cooled to design temperature, laser instrument 16 is opened again.Piston 9 one is cooling straight through constant temperature cooling oil box 15, constant temp cooling water case 14, by well heater, the first outer circulation refrigeratory 20, the second outer circulation refrigeratory 23 and a PID controller 19 and the 2nd PID controller 22, guarantee fuel tank, water tank constant temperature work under design temperature, and the set pressure of regulating tank, fuel tank and temperature in real time, the transmission of control piston 9 heats.
Claims (4)
1. a Piston Thermal Fatigue Test device, it comprises gland (2), cylinder jacket (6), piston (9), tubing sub (10), bearing (11), overcoat (12), clamping nut (13), constant temperature water tank (14), constant-temperature oil tank (15), generating laser (16) and infrared temperature measurement device (17), it is characterized in that: cylinder jacket (6) is linked in overcoat (12), and change into a closed area water cavity (7) with overcoat (12), water cavity (7) is communicated with constant temperature water tank (14), gland (2) is connected with cylinder jacket (6) port, and be crimped on overcoat (12), piston (9) is fixed on cylinder jacket (6) inside by bearing (11) and clamping nut (13), constant-temperature oil tank (15) oil pocket (8) inner with piston (9) is communicated with, generating laser (16) is fixed on the top of piston (9), infrared temperature measurement device (17) is fixed in peripheral frame.
2. a kind of Piston Thermal Fatigue Test device according to claim 1, it is characterized in that: water cavity (7) is communicated with by water pipe head (5) with constant temperature water tank (14), constant-temperature oil tank (15) oil pocket (8) inner with piston (9) is communicated with by tubing sub (10).
3. a kind of Piston Thermal Fatigue Test device according to claim 1, is characterized in that: described constant temperature water tank (14) is by water tank (18) and be arranged on water tank (18) inner a PID controller (19) and the first outer circulation refrigeratory (20) and form.
4. a kind of Piston Thermal Fatigue Test device according to claim 1, is characterized in that: described constant-temperature oil tank (15) is by fuel tank (21) and be arranged on fuel tank (21) inner the 2nd PID controller (22) and the second outer circulation refrigeratory (23) and form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410155758.2A CN103994879A (en) | 2014-04-18 | 2014-04-18 | Piston thermal fatigue test apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410155758.2A CN103994879A (en) | 2014-04-18 | 2014-04-18 | Piston thermal fatigue test apparatus |
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| CN103994879A true CN103994879A (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410155758.2A Pending CN103994879A (en) | 2014-04-18 | 2014-04-18 | Piston thermal fatigue test apparatus |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390766A (en) * | 2014-09-25 | 2015-03-04 | 中国北方发动机研究所(天津) | Layered piston heat transfer test apparatus |
| CN105651639A (en) * | 2016-03-24 | 2016-06-08 | 中国北方发动机研究所(天津) | Inverted type piston thermal fatigue testing device |
| CN104406780B (en) * | 2014-11-18 | 2017-04-26 | 潍柴动力股份有限公司 | Internal combustion engine cylinder fatigue test device |
| CN107917797A (en) * | 2017-11-01 | 2018-04-17 | 浙江大学 | A kind of Piston Thermal Fatigue Test device |
| CN109211553A (en) * | 2018-09-30 | 2019-01-15 | 滨州学院 | Piston pin hole fatigue experimental device and method |
| CN109612701A (en) * | 2018-12-12 | 2019-04-12 | 中国北方发动机研究所(天津) | The high detonation pressure simulator of piston element fatigue test |
| CN109668738A (en) * | 2019-02-28 | 2019-04-23 | 北京理工大学 | A kind of piston temperature field simulation test device and test method |
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| CN2836002Y (en) * | 2005-10-26 | 2006-11-08 | 中国科学院力学研究所 | Piston thermal fatigue tester |
| CN101419128A (en) * | 2008-10-17 | 2009-04-29 | 奇瑞汽车股份有限公司 | Water cooler for engine test |
| CN101793607A (en) * | 2010-03-30 | 2010-08-04 | 山东大学 | Cooling test device of engine piston injected oil |
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| CN102032991A (en) * | 2010-11-16 | 2011-04-27 | 北京理工大学 | Engine piston oscillating and cooling test device |
| FR2972052A1 (en) * | 2011-02-25 | 2012-08-31 | Peugeot Citroen Automobiles Sa | Piston's thermal fatigue testing device for thermal engine in motor vehicle, has optical pyrometer that measures maximum temperature in part of piston, and optical measurement unit that indicates structural damage of piston |
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| CN103675001A (en) * | 2013-12-10 | 2014-03-26 | 昆明理工大学 | Cooling system used for thermal shock and thermal fatigue strength tests |
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2014
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390766A (en) * | 2014-09-25 | 2015-03-04 | 中国北方发动机研究所(天津) | Layered piston heat transfer test apparatus |
| CN104406780B (en) * | 2014-11-18 | 2017-04-26 | 潍柴动力股份有限公司 | Internal combustion engine cylinder fatigue test device |
| CN105651639A (en) * | 2016-03-24 | 2016-06-08 | 中国北方发动机研究所(天津) | Inverted type piston thermal fatigue testing device |
| CN105651639B (en) * | 2016-03-24 | 2018-06-12 | 中国北方发动机研究所(天津) | A kind of inversion type Piston Thermal Fatigue Test device |
| CN107917797A (en) * | 2017-11-01 | 2018-04-17 | 浙江大学 | A kind of Piston Thermal Fatigue Test device |
| CN109211553A (en) * | 2018-09-30 | 2019-01-15 | 滨州学院 | Piston pin hole fatigue experimental device and method |
| CN109211553B (en) * | 2018-09-30 | 2023-05-09 | 滨州学院 | Piston pin hole fatigue test device and method |
| CN109612701A (en) * | 2018-12-12 | 2019-04-12 | 中国北方发动机研究所(天津) | The high detonation pressure simulator of piston element fatigue test |
| CN109668738A (en) * | 2019-02-28 | 2019-04-23 | 北京理工大学 | A kind of piston temperature field simulation test device and test method |
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Application publication date: 20140820 |