CN105651639B - A kind of inversion type Piston Thermal Fatigue Test device - Google Patents
A kind of inversion type Piston Thermal Fatigue Test device Download PDFInfo
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- CN105651639B CN105651639B CN201610176103.2A CN201610176103A CN105651639B CN 105651639 B CN105651639 B CN 105651639B CN 201610176103 A CN201610176103 A CN 201610176103A CN 105651639 B CN105651639 B CN 105651639B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/60—Investigating resistance of materials, e.g. refractory materials, to rapid heat changes
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Abstract
The present invention provides a kind of inversion type Piston Thermal Fatigue Test devices, including the nonstandard structure of piston, device support stand and cooling water channel structure, at least one nonstandard structure of the piston is fixed on device support stand, the cooling water channel structure be fixed on device support stand and with the nonstandard fabric connectivity of piston.Piston Thermal Fatigue Test device of the present invention is that piston group to be measured (band piston ring) is packed into nonstandard cylinder sleeve, its piston group assembled form is consistent with real machine, therefore the heat transfer between simulation test procedure, piston and cylinder sleeve is consistent by heat transfer with actual piston working condition.
Description
Technical field
The invention belongs to engine piston test device technical fields, are tried more particularly, to a kind of inversion type piston heat fatigue
Experiment device.
Background technology
Piston is one of kernel component of engine, and work quality is directly related to the overall performance and work of engine
Make reliability, therefore more and more researchers are dedicated to the design and improvement of piston.Piston is born in engine simultaneously
One of mechanical load and the most harsh component of thermal force, and be often the master of its operational failure by the fatigue rupture that thermic load is brought
Want reason.Piston-top surface is directly contacted with high-temperature fuel gas, in work due to high temperature and temperature distribution is non-uniform and generate heat should
The repeated action of power, often forms heat fatigue cracking.Warm status and fatigue strength for accurate evaluation piston, it is necessary to piston
Carry out heat fatigue reliability test.
Existing piston heat load testing stand is that individually top land is heated, and seldom consider piston and cylinder sleeve it
Between transmitted by the heat of piston ring, cooling effect of the concussion oil pocket to piston, cause piston test specimen carrying situation and test-run a machine state
In the presence of very big difference.
Invention content
In view of this, the present invention is directed to propose a kind of inversion type Piston Thermal Fatigue Test device, more really simulates piston
Use state, to reduce the difference of piston test specimen carrying situation and test-run a machine state.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of inversion type Piston Thermal Fatigue Test device, including the nonstandard structure of piston, device support stand and cooling water channel knot
Structure, at least one nonstandard structure of piston are fixed on device support stand, and the cooling water channel structure is fixed on device support
On frame and with the nonstandard fabric connectivity of piston.
Further, described device supporting rack includes long fixed plate, short fixed plate, connection angle steel, thermal insulation board and transition sleeve,
Two long fixed plates and two short fixed plates form rectangle structure, pass through connection between long fixed plate and short fixed plate
Connect Bolted angle connection；The two sides of the thermal insulation board are applied mechanically bolt by transition with two long fixed plates and are joined, and are set on the thermal insulation board
There is the piston bottoming hole of the nonstandard structure of corresponding piston.
Further, the nonstandard structure of the piston include the non-standard type of piston, nonstandard cylinder sleeve, nonstandard connecting rod, piston fixed link,
Oil pocket warter connection, nonstandard jacket-cooling water connector and sealing ring are shaken,
The sealing ring is arranged in the seal groove on the outside of nonstandard cylinder sleeve, and the non-standard type of piston is set in outside nonstandard cylinder sleeve
Side and its bottom is fixedly connected by bolt with the dome ring that nonstandard cylinder sleeve bottom radially extends；The both ends of the piston fixed link
The top of the non-standard type of piston is fixedly mounted on, the nonstandard connecting rod is vertically arranged in the centre of nonstandard cylinder sleeve, top and piston
Fixed link is fixedly connected, and bottom end is used to connect piston component to be measured；It is non-that the nonstandard jacket-cooling water connector is mounted on piston
The top of standard type, the concussion oil pocket warter connection are used to connect piston component to be measured.
Further, the cooling water channel structure include water inlet pipe, return pipe, pipeline support, nonstandard cylinder sleeve cooling branch pipe,
Oil pocket cooling branch pipe, water blocking, metal hose joint are shaken,
The water inlet pipe is separately fixed at the both sides of device support stand, Ruo Ganfei with return pipe by several pipeline supports
Mark cylinder sleeve cooling branch pipe connects the water inlet pipe or return pipe with one end of several concussion oil pocket cooling branch pipes, and other end connection is lived
Nonstandard structure is filled in, several water blockings, one end of the water inlet pipe and one end of return pipe are additionally provided on the water inlet pipe or return pipe
Connection is used for connecting the metal hose joint of water inlet manifold or total return pipe.
Relative to the prior art, the present invention has the advantage that：
(1) the Piston Thermal Fatigue Test device is to be packed into piston group to be measured (band piston ring) in nonstandard cylinder sleeve, piston
Group assembled form is consistent with real machine, therefore the heat transfer between simulation test procedure, piston and cylinder sleeve and actual piston work shape
State it is consistent by heat transfer.
(2) the Piston Thermal Fatigue Test device uses two-way water cooling, and water leads to the piston concussion of piston group to be measured all the way
In oil pocket, and the cooling effect that real machine state lower piston shakes oil pocket is simulated by adjusting the flow of cold water.Another way cools down
Water leads in the water cavity that is formed between nonstandard cylinder sleeve and the non-standard type of piston, under real machine working condition to the cooling phase of piston skirt
Together, the present apparatus simulates real work situation of the piston group to be measured in cylinder sleeve completely.
(3) the Piston Thermal Fatigue Test device support stand uses composite frame structure, can be suitble to the piston of different cylinder diameters
Thermal fatigue test has interchangeability, and easy to assemble.The Piston Thermal Fatigue Test device can carry out heat fatigue for multigroup piston simultaneously
Experiment, and the cooling water channel with common rail can provide cooling for multigroup piston simultaneously.
Description of the drawings
The attached drawing for forming the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the overall structure figure of inversion type Piston Thermal Fatigue Test device described in the embodiment of the present invention；
Fig. 2 is the structure diagram of described device supporting rack of the embodiment of the present invention；
Fig. 3 is the structure diagram of the nonstandard structure of piston described in the embodiment of the present invention；
Fig. 4 is the structure diagram of cooling water channel structure described in the embodiment of the present invention；
Fig. 5 is the fundamental diagram of inversion type Piston Thermal Fatigue Test device described in the embodiment of the present invention.
Reference sign：
1- device support stands, the nonstandard structure of 2- pistons, 3- cooling water channel structures, 4- heating flames, 11- long fixed plates, 12-
Short fixed plate, 13- connection angle steel, 14- thermal insulation boards, 15- transition sleeves, 16- rack fixing ends, the non-standard type of 21- pistons, 22- are nonstandard
Cylinder sleeve, the nonstandard connecting rods of 23-, 24- piston fixed links, 25- concussion oil pocket warter connections, the nonstandard jacket-cooling water connectors of 26-,
27- sealing rings, 28- piston groups to be measured, 31- water inlet pipes, 32- return pipes, 33- pipeline supports, the nonstandard cylinder sleeve cooling branch pipes of 34-,
35- concussion oil pocket cooling branch pipes, 36- water blockings, 37- metal hose joints.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
A kind of inversion type Piston Thermal Fatigue Test device of the embodiment of the present invention, as shown in Figure 1, including the nonstandard structure 2 of piston,
Device support stand 1 and cooling water channel structure 3, three nonstandard structures 2 of piston are fixed on device support stand 1, the cooling
Waterway structure 3 is fixed on device support stand 1 and structure nonstandard with piston 2 connects.
Described device supporting rack 1 includes long fixed plate 11, short fixed plate 12, connection angle steel 13, thermal insulation board 14 and transition sleeve
15, as shown in Fig. 2, two long fixed plates 11 and two short fixed plates 12 form rectangle structure, long fixed plate 11
It is connected, then fixed with bolt between short fixed plate 12 by coupling angle steel 13；Two sides of the thermal insulation board 14 and two long
Fixed plate 11 is fixedly connected by transition sleeve 15 with bolt, is set on the thermal insulation board 14 there are three piston bottoming hole, corresponded to respectively
One piston group 28 to be measured being assemblied in the nonstandard structure 2 of piston；The section of the short fixed plate 12 is L-type, and L-type bottom is
Rack fixing end 16, during experiment, short fixed plate 12 is fixed by bolts to by rack fixing end 16 on test-bed.
The nonstandard structure 2 of piston include the non-standard type 21 of piston, nonstandard cylinder sleeve 22, nonstandard connecting rod 23, piston fixed link 24,
Oil pocket warter connection 25, nonstandard jacket-cooling water connector 26 and sealing ring 27 are shaken, as shown in figure 3, multiple sealing rings
27 are arranged in multiple seal grooves in nonstandard 22 outside of cylinder sleeve, and the non-standard type 21 of piston is set on the outside of nonstandard cylinder sleeve 22 and it
Bottom is fixedly connected by bolt with the dome ring that nonstandard 22 bottom of cylinder sleeve radially extends；The both ends of the piston fixed link 24 lead to
The top that bolt is fixedly mounted on the non-standard type 21 of piston is crossed, the nonstandard connecting rod 23 is vertically arranged in the centre of nonstandard cylinder sleeve 22,
Its top is bolted to connection with piston fixed link 24, and for connecting piston group 28 to be measured, when experiment will be to be measured for bottom end
Piston group 28 is assembled according to the assembling specification of piston group, and on the nonstandard connecting rod 23 being assemblied in nonstandard cylinder sleeve 22；It is described non-
It marks jacket-cooling water connector 26 and is mounted on the top connection non-standard type 21 of piston of the non-standard type 21 of piston and nonstandard cylinder sleeve 22 composition
Water cavity is screwed；The concussion oil pocket warter connection 25 passes through for connecting the piston of piston group 28 to be measured concussion oil pocket
It is screwed.
The cooling water channel structure 3 include water inlet pipe 31, return pipe 32, pipeline support 33, nonstandard cylinder sleeve cooling branch pipe 34,
Shake oil pocket cooling branch pipe 35, water blocking 36, metal hose joint 37, if as shown in figure 4, the water inlet pipe 31 and return pipe 32 by
Dry pipeline support 33 is separately fixed at the both sides of device support stand 1 by bolt, if several nonstandard cylinder sleeve cooling branch pipes 34 and
One end of dry concussion oil pocket cooling branch pipe 35 connects the water inlet pipe 31 or return pipe 32, the other end connect the nonstandard knot of piston respectively
The nonstandard jacket-cooling water connector 26 of structure 2 and concussion oil pocket warter connection 25；It is also set on the water inlet pipe 31 or return pipe 32
There are several water blockings 36, one end and one end of return pipe 32 of the water inlet pipe 31 are connected for connecting water inlet manifold or total return water
The metal hose joint 37 of pipe.
The course of work of the inversion type Piston Thermal Fatigue Test device is as shown in figure 5, the experimental rig both ends are fixed
On test-bed, the top of piston group 28 to be measured is heated by bottom flame, cooling water is entered by water inlet pipe 31, and a part is logical
Cross nonstandard cylinder sleeve cooling branch pipe 34 enters the non-standard type 21 of piston with nonstandard cylinder sleeve 22 forms water cavity it is interior provided for piston skirt it is cold
But, a part is provided by shaking the piston crown that oil pocket cooling branch pipe 35 enters in piston concussion oil pocket for piston group 28 to be measured
Cooling.Cooling water flow velocity and flow all can voluntarily be adjusted (diameter for changing cooling branch pipe connection) by user during experiment.Examination
During testing, (such as 100 working cycles) pause experiment, observes piston heat fatigue damage status at regular intervals, until treating
Piston group 28 is surveyed to occur failing or meet test cycle number.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (3)
1. a kind of inversion type Piston Thermal Fatigue Test device, it is characterised in that：Including the nonstandard structure of piston, device support stand and cold
But waterway structure, at least one nonstandard structure of piston are fixed on device support stand, and the cooling water channel structure is fixed on
On device support stand and with the nonstandard fabric connectivity of piston；
The nonstandard structure of piston includes the non-standard type of piston, nonstandard cylinder sleeve, nonstandard connecting rod, piston fixed link, concussion oil pocket cooling
Water swivel, nonstandard jacket-cooling water connector and sealing ring,
The sealing ring is arranged in the seal groove on the outside of nonstandard cylinder sleeve, the non-standard type of piston be set on the outside of nonstandard cylinder sleeve and
Its bottom is fixedly connected by bolt with the dome ring that nonstandard cylinder sleeve bottom radially extends；The both ends of the piston fixed link are fixed
Mounted on the top of the non-standard type of piston, the nonstandard connecting rod is vertically arranged in the centre of nonstandard cylinder sleeve, and top is fixed with piston
Bar is fixedly connected, and bottom end is used to connect piston component to be measured；The nonstandard jacket-cooling water connector is mounted on the non-standard type of piston
Top, the concussion oil pocket warter connection is for connecting piston component to be measured.
2. inversion type Piston Thermal Fatigue Test device according to claim 1, it is characterised in that：Described device supporting rack packet
Include long fixed plate, short fixed plate, connection angle steel, thermal insulation board and transition sleeve, two long fixed plates and two short fixations
Plate forms rectangle structure, by coupling Bolted angle connection between long fixed plate and short fixed plate；The two sides of the thermal insulation board with
Two long fixed plates are bolted by transition sleeve, and the thermal insulation board is equipped with the piston heating of the nonstandard structure of corresponding piston
Hole.
3. inversion type Piston Thermal Fatigue Test device according to claim 1, it is characterised in that：The cooling water channel structure
It is connect including water inlet pipe, return pipe, pipeline support, nonstandard cylinder sleeve cooling branch pipe, concussion oil pocket cooling branch pipe, water blocking, metal hose
Head,
The water inlet pipe is separately fixed at the both sides of device support stand, several nonstandard cylinders with return pipe by several pipeline supports
Set cooling branch pipe connects the water inlet pipe or return pipe with one end of several concussion oil pocket cooling branch pipes, and other end connection piston is non-
Structure is marked, is additionally provided with several water blockings on the water inlet pipe or return pipe, one end of the water inlet pipe and one end of return pipe connect
It is general to connect the metal hose joint of water inlet manifold or total return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610176103.2A CN105651639B (en) | 2016-03-24 | 2016-03-24 | A kind of inversion type Piston Thermal Fatigue Test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610176103.2A CN105651639B (en) | 2016-03-24 | 2016-03-24 | A kind of inversion type Piston Thermal Fatigue Test device |
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| Publication Number | Publication Date |
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| CN105651639A CN105651639A (en) | 2016-06-08 |
| CN105651639B true CN105651639B (en) | 2018-06-12 |
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| CN201610176103.2A Active CN105651639B (en) | 2016-03-24 | 2016-03-24 | A kind of inversion type Piston Thermal Fatigue Test device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917797A (en) * | 2017-11-01 | 2018-04-17 | 浙江大学 | A kind of Piston Thermal Fatigue Test device |
| CN111781226B (en) * | 2020-07-03 | 2023-12-19 | 华润水泥技术研发有限公司 | Method for testing heat resistance of artificial stone plate |
| CN112798239A (en) * | 2020-12-21 | 2021-05-14 | 中国北方发动机研究所(天津) | Load applying and testing method for piston heat engine fatigue strength test |
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|---|---|---|---|---|
| JP3508991B2 (en) * | 1998-09-18 | 2004-03-22 | 新東工業株式会社 | Method and apparatus for testing thermal fatigue resistance of sintered ceramics |
| CN101929935A (en) * | 2009-06-25 | 2010-12-29 | 中国科学院力学研究所 | Piston heat load test device and method |
| CN103674753A (en) * | 2013-12-09 | 2014-03-26 | 昆明理工大学 | Test platform for thermal shock and thermal fatigue |
| 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 |
| CN103792076A (en) * | 2014-01-17 | 2014-05-14 | 昆明理工大学 | Simulator test bed for thermal shock and thermal fatigue of parts affected by heat |
| CN203738637U (en) * | 2014-01-17 | 2014-07-30 | 昆明理工大学 | Thermal-insulation turnover clamping device special for piston of thermal shock and thermal fatigue testbed |
| CN103994879A (en) * | 2014-04-18 | 2014-08-20 | 中国北方发动机研究所(天津) | Piston thermal fatigue test apparatus |
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2016
- 2016-03-24 CN CN201610176103.2A patent/CN105651639B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3508991B2 (en) * | 1998-09-18 | 2004-03-22 | 新東工業株式会社 | Method and apparatus for testing thermal fatigue resistance of sintered ceramics |
| CN101929935A (en) * | 2009-06-25 | 2010-12-29 | 中国科学院力学研究所 | Piston heat load test device and method |
| CN103674753A (en) * | 2013-12-09 | 2014-03-26 | 昆明理工大学 | Test platform for thermal shock and thermal fatigue |
| 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 |
| CN103792076A (en) * | 2014-01-17 | 2014-05-14 | 昆明理工大学 | Simulator test bed for thermal shock and thermal fatigue of parts affected by heat |
| CN203738637U (en) * | 2014-01-17 | 2014-07-30 | 昆明理工大学 | Thermal-insulation turnover clamping device special for piston of thermal shock and thermal fatigue testbed |
| CN103994879A (en) * | 2014-04-18 | 2014-08-20 | 中国北方发动机研究所(天津) | Piston thermal fatigue test apparatus |
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| CN105651639A (en) | 2016-06-08 |
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