CN104792819A - Heat barrier coating heat insulation effect testing device for fuel machine - Google Patents
Heat barrier coating heat insulation effect testing device for fuel machine Download PDFInfo
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- CN104792819A CN104792819A CN201510180512.5A CN201510180512A CN104792819A CN 104792819 A CN104792819 A CN 104792819A CN 201510180512 A CN201510180512 A CN 201510180512A CN 104792819 A CN104792819 A CN 104792819A
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Abstract
The invention discloses a heat barrier coating heat insulation effect testing device for a fuel machine. The device is characterized by comprising a testing electric stove, a system control box, a heat barrier coating sample and a reference sample, wherein the heat barrier coating sample and the reference sample are closed circular tubes which are totally the same in size and shape and closed at one ends, and are both placed in the testing electric stove to be in the same heated high temperature condition; the opening end of each of the heat barrier coating sample and the reference sample is connected with a mass flowmeter in the system control box through a cold air inlet pipe; a thermocouple is mounted on the inner wall of each of the heat barrier coating sample and the reference sample, and is connected with the system control box. The device can simulate service condition of heating, heat-insulating, cooling and the like of the heat barrier coating of a combustor of the fuel machine, and can accurately test the heat insulation effect of the heat barrier coating under the condition of the device through experiments.
Description
Technical field
The present invention relates to the heat property test equipment of combustion engine thermal barrier coating, specifically a kind of combustion engine thermal barrier coating effect of heat insulation proving installation.
Background technology
Modern gas turbines is widely used in power plants generating electricity, ship power, aeromotor, is the highest standard of a measurement National Industrial manufacture level.Make a general survey of the whole world, the minority enterprise only having a few developed country of energy autonomous production gas turbine.Along with the continuous upgrading of modern gas turbines, most gas turbine inlet air temperature is all more than 1300 DEG C, and the gas turbine inlet air temperature of up-to-date research and development is more than 1600 DEG C.Intake air temperature is higher, and the efficiency of combustion engine and economy are also higher, and this just has higher requirement to the thermal behavior of combustion engine high-temperature component.The working temperature that the high temperature alloy of modern development is general is less than 1000 DEG C, and the cooling effectiveness promoting combustion engine cooling system is also very limited, and method prepares one deck thermal barrier coating in metallic substrate surface widely now.It can effectively reduce the temperature of combustion engine blade, slows down the corrosion of high-temperature fuel gas heating power, extends the life-span of high temperature blade, improve the efficiency of combustion engine clearly.
Before thermal barrier coating runs in combustion engine, all needing to carry out a series of thermal behavior validation test to it, wherein as the basic parameter-effect of heat insulation of thermal barrier coating, is pass judgment on the whether excellent major criterion of thermal barrier coating performance.Therefore taking the way of science, the heat-proof quality of test, checking, evaluation coating, is the important step guaranteeing coating exploitation, combustion engine core component reliability.Thermal barrier coating is due to self work characteristics complexity simultaneously, and military service operating mode is severe, and the test of effect of heat insulation is not easily direct to be carried out on burner or turbine rotor vane, and feasible method is the working environment of simulating thermal barrier coating with sample, detects its heat-proof quality.Therefore need to manufacture and design a set of device being applicable to the test of thermal barrier coating sample effect of heat insulation.
Summary of the invention
The object of the invention is to solve the problems of the technologies described above, provide a kind of combustion engine thermal barrier coating effect of heat insulation proving installation, the working environment of thermal barrier coating simulated by this device sample, detects its heat-proof quality easily.
Realizing technical scheme of the present invention is: a kind of combustion engine thermal barrier coating effect of heat insulation proving installation, is characterized in that: comprise testing furnace, system control box, thermal barrier coating sample and reference sample; The pipe that sized by described thermal barrier coating sample and reference sample, the identical one end of shape is closed, they are all positioned in testing furnace hot environment of being heated on an equal basis; Openend is all connected with the mass flowmeter in system control box by cold air draft tube; The inwall of described thermal barrier coating sample and reference sample is all provided with thermopair, and described thermopair is connected with system control box.
Described mass flowmeter connects cooling draught amount controller, and carries out size adjustment by cooling draught amount controller.
The cold gas passed in described thermal barrier coating sample and reference sample, uninterrupted is consistent.
Described testing furnace is electric tube furnace, and test temperature is adjustable, and burner hearth flat-temperature zone length is determined by two sample overall lengths, and thermal barrier coating sample and reference sample are put into from the left and right directions of burner hearth respectively, ensures to be placed in flat-temperature zone simultaneously.
The openend of described thermal barrier coating sample and reference sample all has end cap, described end cap has draft tube, escape pipe and thermopair passage, ensure that sample inside separates with external environment condition.
Described thermopair, by the middle part drilling aperture at thermal barrier coating sample or reference sample, is welded on and is close to inwall aperture lower position.
Describedly be welded as fusion welds.
Described system control box is by the cold gas break-make being arranged on ball valve in two-way draft tube respectively, solenoid control passes into thermal barrier coating sample and reference sample.
The inner wall temperature of described thermal barrier coating sample and reference sample, is shown by system control box.
The invention has the beneficial effects as follows:
1, this device can simulate the Service Environment such as being heated of combustion engine burner thermal barrier coating, heat insulation, cooling, accurately can test the effect of heat insulation of thermal barrier coating under this device condition by experiment.
2, adopt contrast test, can get rid of cold gas cooling-down effect, measurement result is the effect of heat insulation of thermal barrier coating own.
3, use thermocouple mounting structure of the present invention, make thermopair and style inwall closely, measured temperature is true.Add fusion welds with punching, make processing become easy.
4, sample structure of the present invention, can ensure sample at the trial, and the cold gas environment of sample inside separates with outside heating by electric cooker environment, does not influence each other.
5, the present invention can the different effect of heat insulation of test sample thermal barrier coating under different tests temperature, different cooling gas flow size, combustion engine coating can be simulated to catch a cold under real operating environments air cooling condition of work but, make the effect of heat insulation tested more meet coating real work result.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention;
Fig. 2 test philosophy schematic diagram of the present invention;
Fig. 3 is thermal barrier coating sample structure schematic diagram.
Number in the figure: 1-cooling draught amount controller, 2-system control box, 3-draft tube, 4-thermopair, 5-reference sample, 6-electric tube furnace, 7-escape pipe, 8-thermal barrier coating sample, 9-ball valve, 10-solenoid valve, 11-mass flowmeter, 12-end cap, 13-thermal barrier coating, 14-melting welding.
Embodiment
As shown in Figure 1 to Figure 3, a kind of combustion engine thermal barrier coating effect of heat insulation proving installation, comprises electric tube furnace 6, system control box 2, cooling draught amount controller 1, thermal barrier coating sample 8 and reference sample 5; The pipe that sized by described thermal barrier coating sample 8 and reference sample 5, the identical one end of shape is closed, their difference is that the appearance of thermal barrier coating sample 8 scribbles thermal barrier coating 13, and reference sample 5 does not have; They are all positioned over flat-temperature zone in electric tube furnace 6; Openend is all connected with the mass flowmeter 11 in system control box 2 by cold air draft tube 3, and described mass flowmeter 11 is by cooling draught amount controller 1 adjusting size; The inwall of described thermal barrier coating sample 8 and reference sample 5 is all provided with thermopair 4, and described thermopair 4 is connected with system control box 2, and measured thermal barrier coating sample 8 and the inner wall temperature of reference sample 5 are shown by system control box 2.The test temperature of described electric tube furnace 6 is adjustable, and burner hearth flat-temperature zone length is determined by two sample overall lengths, and thermal barrier coating sample 8 and reference sample 5 are put into from the left and right directions of burner hearth respectively, ensures to be placed in flat-temperature zone simultaneously.The openend of described thermal barrier coating sample 8 and reference sample 5 all has end cap 12, described end cap 12 has the passage of draft tube 3, escape pipe 7 and thermopair 4.Described thermopair 4, by the middle part drilling aperture at thermal barrier coating sample 8 or reference sample 5, is welded on and is close to inwall aperture lower position.Describedly be welded as melting welding 14 and weld.Described system control box 2 is by the cold gas break-make being arranged on ball valve 9 in two-way draft tube 3 respectively, solenoid valve 10 controls to pass into thermal barrier coating sample 8 and reference sample 5.
Test process of the present invention is: test is before preparation carries out, and need determine source of the gas, power supply is in closed condition.Thermal barrier coating test specimen 8 and reference sample 5 are fixed on support, push electric tube furnace 6 burner hearth flat-temperature zone from two ends respectively, do not allow two test specimens and hearth wall to touch, rear access cooling tracheae, and stockhole insulation asbestos seal is completely cut off.Switch on power, source of the gas, open flow quantity control instrument, flow switch is placed in zero-bit.By required test temperature and process of the test, at the heating schedule of electric furnace programmed control panel input electric furnace, start heating by electric cooker, when fire box temperature reaches test temperature, open cold gas switch, and regulate the cooling gas flow needed, until two-way temperature be down to no longer change time, namely reach heating-cooling steady state effect, record now thermal barrier coating test specimen 8 and reference sample 5 inner wall temperature data, calculate the effect of heat insulation of the thermal barrier coating 13 of current heating-up temperature and cooling gas flow.Change two test specimen internal cooling air flow amount sizes, after system reaches stable state again, the thermal barrier coating 13 adiabatic temperature effect under different cooling gas flow condition can be measured.
Shown by test, native system has successfully carried out performance test to the thermal barrier coating sample 8 after spraying, and test result meets the heat-proof quality of thermal barrier coating 13 real work.This device also can be tested the thermal barrier coating sample of other different technical parameters, for the development of thermal barrier coating provides reference.
Claims (9)
1. a combustion engine thermal barrier coating effect of heat insulation proving installation, is characterized in that: comprise testing furnace, system control box, thermal barrier coating sample and reference sample; The pipe that sized by described thermal barrier coating sample and reference sample, the identical one end of shape is closed, they are all positioned in testing furnace hot environment of being heated on an equal basis; Openend is all connected with the mass flowmeter in system control box by cold air draft tube; The inwall of described thermal barrier coating sample and reference sample is all provided with thermopair, and described thermopair is connected with system control box.
2. combustion engine thermal barrier coating effect of heat insulation proving installation according to claim 1, is characterized in that: described mass flowmeter connects cooling draught amount controller, and carries out size adjustment by cooling draught amount controller.
3. combustion engine thermal barrier coating effect of heat insulation proving installation according to claim 1, is characterized in that: the cold gas passed in described thermal barrier coating sample and reference sample, uninterrupted is consistent.
4. according to combustion engine thermal barrier coating effect of heat insulation proving installation described in claim 1, it is characterized in that: described testing furnace is electric tube furnace, test temperature is adjustable, burner hearth flat-temperature zone length is determined by two sample overall lengths, thermal barrier coating sample and reference sample are put into from the left and right directions of burner hearth respectively, ensure to be placed in flat-temperature zone simultaneously.
5. combustion engine thermal barrier coating effect of heat insulation proving installation according to claim 1, it is characterized in that: the openend of described thermal barrier coating sample and reference sample all has end cap, described end cap there are draft tube, escape pipe and thermopair passage, ensure that sample inside separates with external environment condition.
6. combustion engine thermal barrier coating effect of heat insulation proving installation according to claim 1, is characterized in that: described thermopair, by the middle part drilling aperture at thermal barrier coating sample or reference sample, is welded on and is close to inwall aperture lower position.
7. combustion engine thermal barrier coating effect of heat insulation proving installation according to claim 6, is characterized in that: described in be welded as fusion welds.
8. combustion engine thermal barrier coating effect of heat insulation proving installation according to claim 1, is characterized in that: described system control box is by the cold gas break-make being arranged on ball valve in two-way draft tube respectively, solenoid control passes into thermal barrier coating sample and reference sample.
9. combustion engine thermal barrier coating effect of heat insulation proving installation according to claim 1, is characterized in that: the inner wall temperature of described thermal barrier coating sample and reference sample, is shown by system control box.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510180512.5A CN104792819A (en) | 2015-04-16 | 2015-04-16 | Heat barrier coating heat insulation effect testing device for fuel machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510180512.5A CN104792819A (en) | 2015-04-16 | 2015-04-16 | Heat barrier coating heat insulation effect testing device for fuel machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324028A (en) * | 2016-10-22 | 2017-01-11 | 湖南省冶金材料研究院 | Testing device and testing method for determining thermal insulation effect of thermal barrier coating |
| CN107941848A (en) * | 2017-10-20 | 2018-04-20 | 北京绿时顺风科技有限公司 | The apparatus and method for directly measuring block materials thermal barrier coating adiabatic temperature |
| CN112946014A (en) * | 2021-01-29 | 2021-06-11 | 中国人民解放军国防科技大学 | Method for rapidly evaluating infrared stealth performance of high-temperature stealth component based on energy contrast method |
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| JP2013019712A (en) * | 2011-07-08 | 2013-01-31 | Palmetrics Co Ltd | Specific heat measurement device and specific heat measurement method |
| CN103592329A (en) * | 2013-10-24 | 2014-02-19 | 西安交通大学 | Method for testing heat insulation temperature of thermal barrier coating |
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2015
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2013019712A (en) * | 2011-07-08 | 2013-01-31 | Palmetrics Co Ltd | Specific heat measurement device and specific heat measurement method |
| CN103592329A (en) * | 2013-10-24 | 2014-02-19 | 西安交通大学 | Method for testing heat insulation temperature of thermal barrier coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324028A (en) * | 2016-10-22 | 2017-01-11 | 湖南省冶金材料研究院 | Testing device and testing method for determining thermal insulation effect of thermal barrier coating |
| CN107941848A (en) * | 2017-10-20 | 2018-04-20 | 北京绿时顺风科技有限公司 | The apparatus and method for directly measuring block materials thermal barrier coating adiabatic temperature |
| CN112946014A (en) * | 2021-01-29 | 2021-06-11 | 中国人民解放军国防科技大学 | Method for rapidly evaluating infrared stealth performance of high-temperature stealth component based on energy contrast method |
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Application publication date: 20150722 |