Gas turbine blade thermal barrier coating high-temperature erosion simulation device platform and test method

Abstract

The invention belongs to the field of thermal barrier coating testing, and particularly relates to a gas turbine blade thermal barrier coating high-temperature erosion simulation device platform and a testing method.The device platform comprises a sample installation rack, an erosion spray gun device and a sample detection device; the sample mounting rack comprises a rack body, a mounting clamp arranged on the rack body and an erosion box which is detachably arranged on the rack body and wraps the mounting clamp, and the mounting clamp is used for mounting a tested sample; the erosion spray gun device comprises a position adjusting seat and a spray gun arranged on the position adjusting seat, and the position adjusting seat can adjust the height and distance of the spray gun relative to the tested sample; and the sample detection device is used for detecting the temperature and / or erosion condition of the tested sample through the observation window. According to the invention, the erosion test can be carried out on the thermal barrier coating under multiple combination conditions of erosion distance, erosion angle, erosion height, particle conveying rate and the like.

Description

Technical Field

[0001] The invention belongs to the field of thermal barrier coating testing, and in particular relates to a high-temperature erosion simulation device platform and a testing method for thermal barrier coatings of gas turbine blades. Background Art

[0002] Aircraft engines are the main driving force for the development of aviation, and thrust-to-weight ratio is a key technical indicator for evaluating the performance of aircraft engines. With the continuous improvement of thrust-to-weight ratio, the engine's gas inlet temperature will inevitably increase significantly. The substantial increase in inlet temperature has led to a continuous increase in the temperature-bearing capacity of the engine's hot end components, thereby promoting the rapid development of a variety of high-temperature thermal protection technologies, especially high-temperature directional single crystal material preparation and film cooling technology. Since these technologies have now developed to their extreme temperature of 1150°C, and have greatly increased processing difficulty and cost, they can no longer meet the needs of advanced engine hot end components.

[0003] Thermal barrier coating technology is currently the most effective and feasible method to increase the service temperature of engines. In the early 1950s, researchers first proposed the concept of thermal barrier coating, which is to prepare a ceramic layer on the surface of the hot end metal parts of aircraft engines to separate the metal substrate from the high-temperature combustion gas, thereby improving the temperature bearing capacity of the metal parts and the thermal efficiency of the engine. While thermal barrier coatings protect the high-temperature metal parts in aircraft engines from extreme service environments, multiple loads such as force, heat, and chemical loads act on the coating together. The influence of multiple types of external loads leads to complex failure modes of the coating and peeling failure problems during application.

[0004] There are two key factors for the failure of thermal barrier coatings to peel off: the first key factor is interface oxidation. Under high temperature conditions, higher stress is concentrated near the TGO layer, which induces cracks to form and expand at the interface and within the layer, leading to degradation of coating performance and peeling failure; the second key factor is erosion failure. The air sucked into the aircraft engine is always mixed with some hard particles, such as suspended sand and dust in the dusty environment, tiny particles generated by the turbine blades and combustion chamber of the engine under the filling effect, and carbon particles formed by the combustion of fuel. The erosion process causes the coating to deform and crack, which in turn reduces the thermal insulation effect and mechanical properties, and shortens the life.

[0005] In order to study the erosion damage mechanism of thermal barrier coatings on turbine blades and evaluate the ability of thermal barrier coatings to resist erosion during service, it is necessary to simulate the service behavior of solid particles in a high-temperature erosion environment. However, during the erosion process, the inconsistent size of solid particles in the gas leads to different motion states and motion trajectories of the particles in the gas channel. In addition, the position, speed and angle of solid particles impacting the surface of the thermal barrier coating are different, and they will rebound when impacting the blade surface and then impact other positions of the thermal barrier coating in different motion states, causing multiple erosion and wear on the coating. These factors are the key problems that need to be solved in simulating the high-temperature erosion working conditions of thermal barrier coatings on turbine blades. Therefore, the development of a simulation test platform for high-temperature erosion working conditions of thermal barrier coatings on turbine blades is particularly urgent and important. The existing simulation test platforms have a single simulation working condition and cannot simulate the erosion failure process under a multi-factor service environment. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a high-temperature erosion simulation device platform and a testing method for thermal barrier coatings on gas turbine blades under a multi-factor service environment.

[0007] The present invention provides a high-temperature erosion simulation device platform for thermal barrier coating of gas turbine blades, comprising a sample mounting stand, an erosion spray gun device and a sample detection device;

[0008] The sample mounting stand comprises a frame, a mounting fixture arranged on the frame, and an erosion box detachably arranged on the frame and covering the mounting fixture, an erosion groove and an observation window are arranged on one side of the erosion box, and the mounting fixture is used to mount the sample to be tested, and the angle of the sample to be tested can be adjusted;

[0009] The erosion spray gun device comprises a position adjustment seat and a spray gun arranged on the position adjustment seat, the spray gun erodes the tested sample in the erosion box through the erosion groove, and the position adjustment seat can adjust the height and distance of the spray gun relative to the tested sample;

[0010] The sample detection device is used to detect the temperature and / or erosion condition of the tested sample through the observation window.

[0011] Furthermore, the frame body includes a rectangular frame and a lifting beam which is liftably arranged on two upright posts of the rectangular frame;

[0012] One end of the mounting fixture is arranged on the lifting beam, and the other end is arranged on the base of the rectangular frame.

[0013] Furthermore, an adjustment cavity is arranged on one opposite side of the two upright posts of the rectangular frame, the lifting beam is liftably arranged on the adjustment cavity, and a linear guide telescopic protective cover is arranged on the cavity opening of the adjustment cavity.

[0014] Furthermore, the position adjustment seat includes a lifting adjustment platform and a front-rear adjustment platform, the lifting adjustment platform is arranged at the output end of the front-rear adjustment platform, and the spray gun is arranged at the output end of the lifting adjustment platform.

[0015] Furthermore, the sample detection device includes an adjustable support rod and an infrared thermometer arranged on the adjustable support rod, and the infrared thermometer faces the tested sample through the observation window.

[0016] Furthermore, the spray gun includes a mixing chamber and a nozzle connected in sequence;

[0017] A fuel inlet is arranged above the mixing chamber, and an erosion particle inlet and a compressed air inlet are arranged diagonally at the rear, and the fuel inlet, the erosion particle inlet and the compressed air inlet are all connected to a porous atomizing nozzle in the mixing chamber;

[0018] The mixing chamber is used to mix and atomize the erosion particles, fuel and compressed air, and the nozzle is used to ignite the mixed and atomized erosion particles, fuel and compressed air to form a flame with erosion particles to act on the tested sample.

[0019] Furthermore, the erosion spray gun device also includes a fuel storage device connected to the fuel inlet, a compressed air machine connected to the compressed air inlet, and a powder feeder connected to the erosion particle inlet.

[0020] Furthermore, the nozzle wall of the nozzle is provided with a cooling cavity;

[0021] One end of the cooling chamber is connected to a water inlet, and the other end is connected to a water outlet. The erosion spray gun device also includes a chiller connected to the water inlet and the water outlet.

[0022] Furthermore, the erosion spray gun device also includes an integrated control box;

[0023] The integrated control box is provided with a pipeline system and a control system. The chiller, powder feeder, compressed air machine and fuel storage device are all connected to the spray gun through the pipeline system. The control system is used to control the on-off and flow rate of each pipeline.

[0024] The present invention also provides a method for simulating high-temperature erosion of thermal barrier coatings on gas turbine blades, using the above-mentioned high-temperature erosion simulation device platform for thermal barrier coatings on gas turbine blades, comprising the following steps:

[0025] S1, opening the erosion box, installing the test sample on the installation fixture, and closing the erosion box;

[0026] S2, adjusting the direction of the spray gun through the position adjustment seat so that the spray gun is facing the position of the test sample;

[0027] S3, turn on the spray gun to ignite, and the spray gun sprays flames with erosion particles onto the test sample for testing;

[0028] S4, the sample detection device obtains the temperature and / or erosion condition of the tested sample;

[0029] S5, complete the test.

[0030] The beneficial effect of the present invention is that the high-temperature erosion simulation device platform of the thermal barrier coating of the gas turbine blade provided by the present invention can simulate the assessment and evaluation of the thermal barrier coating of the aircraft engine under the simulated particle gas erosion in a static environment, and can simulate the high-temperature erosion environment of the tested sample under the working state under different angle ranges, different flame spray heights and different flame spray distances of the tested sample, and conduct erosion tests on the thermal barrier coating under multiple combination conditions such as erosion distance, erosion angle, erosion height and particle transport rate, so as to realize the evaluation of material reliability under multiple conditions. In addition, the configuration of the erosion box can prevent erosion particles from polluting the air and ensure the air quality around the device platform.

[0031] In addition, the high-temperature erosion simulation platform for thermal barrier coatings of turbine blades of the present invention solves the difficult problems of the existing thermal barrier coating erosion test devices, such as the small adjustable angle range of the specimen, the short stable working time, and the low particle accuracy. The present invention can provide an important experimental platform for effectively evaluating the erosion failure process simulation and failure mechanism of high-temperature components in a multi-factor service environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Attached Figure 1 It is a structural schematic diagram of the present invention;

[0033] Attached Figure 2 It is a structural schematic diagram of the sample installation stand part in the present invention;

[0034] Attached Figure 3 It is a schematic diagram of the structure of the erosion spray gun device in the present invention;

[0035] Attached Figure 4 It is a schematic diagram of the structure of the chiller in the present invention.

[0036] In the figure, 1-sample mounting stand; 11-frame; 111-base; 112-rod; 113-column; 114-lifting beam; 115-linear guide telescopic shield; 12-mounting fixture; 13-erosion box; 131-erosion tank; 132-observation window; 2-erosion spray gun device; 21-position adjustment seat; 211-lifting adjustment table; 212-front and rear adjustment table; 22-spray gun; 221-mixing chamber; 2211-fuel inlet; 2212-erosion particle inlet; 2213-compressed air inlet ;222-nozzle;2221-water inlet;2222-water outlet;23-fuel storage device;24-compressed air machine;25-powder feeder;251-box;252-gas inlet;253-gas flow meter;254-powder control panel;255-motor;256-powder container;257-powder inlet;258-powder outlet;259-stirring rod;26-chiller;27-integrated control box;3-sample detection device;31-adjusting support rod;32-infrared thermometer;4-test sample. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] As attached Figure 1 -Attached Figure 4 As shown, the present invention provides a high-temperature erosion simulation device platform for thermal barrier coating of gas turbine blades, comprising a sample mounting stand 1, an erosion spray gun device 2 and a sample detection device 3;

[0043] The sample mounting stand 1 is used to mount and fix the sample 4 to be tested. The sample mounting stand 1 includes a frame 11, a mounting fixture 12 arranged on the frame 11, and an erosion box 13 detachably arranged on the frame 11 and covering the mounting fixture 12. The erosion box 13 is preferably made of a high-temperature alloy. The erosion box 13 is used to limit the erosion particles inside the erosion box 13 to prevent the erosion particles from polluting the air and ensure the air quality around the device platform. An erosion groove 131 and an observation window 132 are arranged on one side of the erosion box 13. The erosion groove 131 is used for the spray gun 22 of the erosion spray gun device 2 arranged outside the erosion box 13 to act on the sample 4 to be tested arranged inside the erosion box 13, and the observation window 132 is used for the sample detection device 3 arranged outside the erosion box 13 to detect the sample 4 to be tested arranged inside the erosion box 13. The mounting fixture 12 is used to mount the sample 4 to be tested, and the angle of the sample 4 to be tested can be adjusted, so that the sample 4 to be tested can be tested in different directions;

[0044] The erosion spray gun device 2 includes a position adjustment seat 21 and a spray gun 22 arranged on the position adjustment seat 21. The spray gun 22 erodes the test sample 4 in the erosion box 13 through the erosion groove 131. The position adjustment seat 21 can adjust the height and distance of the spray gun 22 relative to the test sample 4. On the one hand, the position adjustment seat 21 can always align the spray gun 22. On the other hand, combined with the angle adjustment of the test sample 4 by the mounting fixture 12, the relative angle, height and distance between the spray gun 22 and the test sample 4 can be adjusted, thereby simulating the erosion simulation of the test sample 4 under different working conditions;

[0045] The sample detection device 3 is used to detect the temperature and / or erosion condition of the test sample 4 through the observation window 132. The sample detection device 3 can be a camera and a temperature detector. At this time, the sample detection device 3 is arranged outside the erosion box 13, which can be away from the high temperature environment in the erosion box 13 to improve its service life. The test sample 4 can be a turbine blade coated with a thermal barrier coating.

[0046] The high-temperature erosion simulation device platform of the thermal barrier coating of the gas turbine blade provided by the present invention can simulate the assessment and evaluation of the thermal barrier coating of the aircraft engine under the simulated particle gas erosion in a static environment, and can simulate the high-temperature erosion environment of the test sample 4 under the working state under different angle ranges, different flame spraying heights and different flame spraying distances of the test sample 4, wherein different flame spraying heights can realize the switching of the adjustment spraying position, that is, the device platform can perform erosion tests on the thermal barrier coating under multiple combination conditions such as erosion distance, erosion angle, erosion height and particle delivery rate (when the spray gun 22 can adjust the delivery rate of erosion particles), so as to realize the evaluation of material reliability under multiple conditions. In addition, the configuration of the erosion box 13 can prevent erosion particles from polluting the air and ensure the air quality around the device platform.

[0047] In addition, the high-temperature erosion simulation platform for thermal barrier coatings of turbine blades of the present invention solves the difficult problems of the existing thermal barrier coating erosion test devices, such as the small adjustable angle range of the specimen, the short stable working time, and the low particle accuracy. The present invention can provide an important experimental platform for effectively evaluating the erosion failure process simulation and failure mechanism of high-temperature components in a multi-factor service environment.

[0048] In one embodiment, the frame 11 includes a rectangular frame and a lifting beam 114 that can be lifted and lowered on two columns 113 of the rectangular frame, wherein the rectangular frame includes a base 111, two columns 113 arranged on both sides of the base 111, and tops of the two columns 113 are connected to tops of the tops of the two columns 113. The base 111 and the tops 112 are parallel to each other, and the two columns 113 and the lifting beam 114 are parallel to each other.

[0049] One end of the mounting fixture 12 is arranged on the lifting beam 114, and the other end is arranged on the base 111 of the rectangular frame. One end of the mounting fixture 12 is connected to the lifting beam 114, and the other end is connected to the base 111 in a liftable manner, so that the clamping height of the mounting fixture 12 can be adjusted, and finally the height of the test sample 4 can be adjusted. The mounting fixture 12 can also adjust the angle of the test sample 4, so as to achieve the adjustable angle of the test sample 4. The mounting fixture 12 is preferably made of high-temperature alloy material. The specific structure of the mounting fixture 12 is the existing technology and will not be repeated here.

[0050] In one of the embodiments, an adjustment cavity is provided on one opposite side of the two columns 113 of the rectangular frame, and the lifting beam 114 can be lifted and lowered on the adjustment cavity. The specific liftable structure can adopt the sliding method of a guide rail slider, and a position locking structure is provided on the slider, or a screw rod can be provided on the adjustment cavity, and a screw hole screwed to the screw rod is provided at the end of the lifting beam 114. The lifting and lowering adjustment of the lifting beam 114 is achieved by rotating the screw rod. A linear guide telescopic protective cover 115 is provided on the cavity mouth of the adjustment cavity, thereby preventing the adjustment cavity from being exposed to the outside and preventing erosion particles from entering the adjustment cavity.

[0051] In one embodiment, the position adjustment seat 21 includes a lifting adjustment platform 211 and a front-rear adjustment platform 212. The lifting adjustment platform 211 is arranged at the output end of the front-rear adjustment platform 212, and the front-rear adjustment platform 212 is fixed on a bracket. In a preferred embodiment, the bracket is the shell of the integrated control box 27 to improve the structural compactness of the platform. The spray gun 22 is arranged at the output end of the lifting adjustment platform 211. By setting the lifting adjustment platform 211 and the front-rear adjustment platform 212, the height of the spray gun 22 and the distance relative to the test sample 4 can be adjusted.

[0052] In one embodiment, the sample detection device 3 includes an adjustable support rod 31 and an infrared thermometer 32 arranged on the adjustable support rod 31. The adjustable support rod 31 is used to support the infrared thermometer 32 and adjust the direction of the infrared thermometer 32. The infrared thermometer 32 faces the test sample 4 through the observation window 132. The infrared thermometer 32 is used to detect the surface temperature of the test sample 4.

[0053] In one embodiment, the spray gun 22 includes a mixing chamber 221 and a nozzle 222 connected in sequence;

[0054] A fuel inlet 2211 is arranged above the mixing chamber 221, and the fuel inlet 2211 is used to inject fuel into the mixing chamber 221. An erosion particle inlet 2212 and a compressed air inlet 2213 are arranged diagonally at the rear, and the erosion particle inlet 2212 is used to inject erosion particles into the mixing chamber 221, and the compressed air inlet 2213 is used to inject compressed air into the mixing chamber 221. The erosion particle inlet 2212 and the compressed air inlet 2213 are arranged diagonally at the rear of the mixing chamber 221 to improve the mixing effect of the erosion particles and the compressed air, and the two are perpendicular to the fuel inlet 2211 to improve the mixing effect of the three. The fuel inlet 2211, the erosion particle inlet 2212 and the compressed air inlet 2213 are all connected to a porous atomizing nozzle in the mixing chamber 221, that is, the fuel, the erosion particles and the compressed air are all atomized and sprayed out through the porous atomizing nozzle, which further improves their mixing effect.

[0055] The mixing chamber 221 is used to mix and atomize the erosion particles, fuel and compressed air, and the nozzle 222 is used to ignite the mixed and atomized erosion particles, fuel and compressed air to form a flame with erosion particles to act on the test sample 4.

[0056] In one embodiment, the erosion spray gun device 2 also includes a fuel storage device 23 connected to the fuel inlet 2211, a compressed air machine 24 connected to the compressed air inlet 2213, and a powder feeder 25 connected to the erosion particle inlet 2212, the fuel storage device 23 provides fuel to the fuel inlet 2211, the compressed air machine 24 provides compressed air to the compressed air inlet 2213, and the powder feeder 25 provides erosion particles to the erosion particle inlet 2212.

[0057] Preferably, the powder feeder 25 comprises a box 251, a gas inlet 252, a gas flow meter 253, a powder control panel 254, a motor 255, a powder container 256, a powder inlet 257 and a powder outlet 258, and a stirring rod 259 is provided on the output end of the motor 255;

[0058] The box body 251 is a hollow cube structure made of metal material, and a control system is arranged inside to control the normal operation of the powder feeder 25; a gas inlet 252 is welded on one side of the box body 251 to provide air to the powder feeder 25, and a gas flow meter 253 is arranged on the other side, and the amount of gas is adjusted by the control button below the gas flow meter 253. A powder control panel 254 is also arranged at a 45° direction of the box body 251 to display the amount of powder, and the amount of powder can be adjusted by the adjustment button next to the powder control panel 254;

[0059] The powder container 256 is fixed on the top of the box body 251 by bolts. When in use, the erosion particles are loaded from the powder inlet 257, and the motor 255 stirs the erosion particles evenly through the stirring rod 259;

[0060] When in use, the motor 255 drives the stirring rod 259 to stir the erosion particles uniformly, and then uniformly delivers them to the powder outlet 258. The air provided by the gas inlet 252 delivers the erosion particles to the erosion particle inlet 2212 through the powder outlet 258. The powder feeder 25 can adjust the powder feeding speed, that is, adjust the conveying rate of the erosion particles, so that the device platform can perform erosion tests on materials under multiple combination conditions such as erosion distance, erosion angle, and erosion particle conveying rate.

[0061] Preferably, the compressed air machine 24 adopts a permanent magnet variable frequency air compressor GS-22PM, with a rated exhaust pressure of 0.8 MPa and a rated volume flow of 3.4 m 3 / min.

[0062] In one embodiment, the nozzle wall of the nozzle 222 is provided with a cooling cavity;

[0063] One end of the cooling chamber is connected to a water inlet 2221, and the other end is connected to a water outlet 2222. The erosion spray gun device 2 also includes a chiller 26 connected to the water inlet 2221 and the water outlet 2222, so as to cool the nozzle 222, improve the use stability of the nozzle 222, and avoid ablation of the nozzle 222. Preferably, the chiller 26 is an air-cooled chiller LBGC-02A, with a temperature control range of +5°C-+35°C and a cooling capacity of 2.1kcal / h, 5.6kW.

[0064] In one of the embodiments, the erosion spray gun device 2 further includes an integrated control box 27;

[0065] The integrated control box 27 is provided with a pipeline system and a control system, and the water chiller 26, the powder feeder 25, the compressed air machine 24 and the fuel storage device 23 are all connected to the spray gun 22 through the pipeline system, and the control system is used to control the on-off and flow rate of each pipeline. In this embodiment, the integrated control box 27 is used to integrate the control of the water chiller 26, the powder feeder 25, the compressed air machine 24 and the fuel storage device 23, which facilitates the connection of the water chiller 26, the powder feeder 25, the compressed air machine 24 and the fuel storage device 23 with the spray gun 22.

[0066] The present invention also provides a method for simulating high-temperature erosion of thermal barrier coatings on gas turbine blades, using the above-mentioned high-temperature erosion simulation device platform for thermal barrier coatings on gas turbine blades, comprising the following steps:

[0067] S1, open the erosion box 13, install the test sample 4 on the installation fixture 12, and close the erosion box 13;

[0068] S2, adjusting the direction of the spray gun 22 by the position adjustment seat 21 so that the spray gun 22 faces the position of the test sample 4;

[0069] S3, turning on the spray gun 22 to ignite, and the spray gun 22 sprays a flame with erosion particles onto the test sample 4 for testing;

[0070] Specifically, the water chiller 26, the compressed air machine 24, the powder feeder 25 and the fuel storage device 23 are turned on, the water chiller 26 performs circulation cooling on the nozzle 222, the compressed air machine 24 and the powder feeder 25 provide compressed air and erosion particles to the mixing chamber 221, and the fuel storage device 23 provides fuel to the mixing chamber 221;

[0071] Then the compressed air, erosion particles and fuel are atomized through the porous atomizing nozzle of the mixing chamber 221 and sprayed out from the nozzle 222. When the fuel pressure is ≥0.6MPa, the flow rate is ≥4L / h, and the pressure of the compressed air reaches 0.8MPa or more, the ignition conditions are met, and then the ignition is started to conduct the experiment; in addition, the speed of the erosion particles is adjusted according to the experimental requirements;

[0072] S4, the sample detection device 3 obtains the temperature and / or erosion condition of the test sample 4;

[0073] S5, complete the test.

[0074] After the test is completed, the direction of the spray gun 22 can be adjusted by adjusting the position adjustment seat 21 and / or the angle at which the tested sample 4 is mounted on the mounting fixture 12 to achieve simulation tests of different working conditions.

[0075] In the above test method, the single test time can be reduced from 30 minutes of conventional test equipment to 15 minutes, and the time efficiency is improved by 50%. It is more convenient to adjust the test conditions, which improves the adjustment switching of different test conditions and the overall test efficiency.

[0076] The above is only an embodiment and does not limit the present invention in any way. Any person skilled in the art can use the above disclosed technical contents to make many possible changes, modifications or modifications to the technical solutions of the present invention into equivalent embodiments of equivalent changes without departing from the scope of the technical solutions of the present invention. Therefore, any simple modification, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the scope of protection of the technical solutions of the present invention.

Claims

1. A high temperature erosion simulation device platform for thermal barrier coating of gas turbine blades, characterized in that: It comprises a sample mounting stand (1), an erosion spray gun device (2) and a sample detection device (3); The sample mounting stand (1) comprises a frame (11), a mounting fixture (12) arranged on the frame (11), and an erosion box (13) detachably arranged on the frame (11) and covering the mounting fixture (12); an erosion groove (131) and an observation window (132) are arranged on one side of the erosion box (13); the mounting fixture (12) is used to mount a sample to be tested (4), and the angle of the sample to be tested (4) can be adjusted; The erosion spray gun device (2) comprises a position adjustment seat (21) and a spray gun (22) arranged on the position adjustment seat (21), wherein the spray gun (22) erodes the test sample (4) in the erosion box (13) through the erosion groove (131), and the position adjustment seat (21) can adjust the height and distance of the spray gun (22) relative to the test sample (4); The sample detection device (3) is used to detect the temperature and / or erosion condition of the tested sample (4) through the observation window (132).

2. The high temperature erosion simulation device platform for thermal barrier coating of gas turbine blades according to claim 1, characterized in that: The frame (11) comprises a rectangular frame and a lifting beam (114) which is liftably arranged on two upright posts (113) of the rectangular frame; One end of the installation fixture (12) is arranged on the lifting beam (114), and the other end is arranged on the base (111) of the rectangular frame.

3. The high temperature erosion simulation device platform for thermal barrier coating of gas turbine blades according to claim 2, characterized in that: An adjustment cavity is arranged on one side opposite to the two upright posts (113) of the rectangular frame, the lifting beam (114) is liftably arranged on the adjustment cavity, and a linear guide telescopic protective cover (115) is arranged on the cavity opening of the adjustment cavity.

4. The high temperature erosion simulation device platform for thermal barrier coating of gas turbine blades according to claim 1, characterized in that: The position adjustment seat (21) comprises a lifting adjustment platform (211) and a front-rear adjustment platform (212); the lifting adjustment platform (211) is arranged at the output end of the front-rear adjustment platform (212); and the spray gun (22) is arranged at the output end of the lifting adjustment platform (211).

5. The high temperature erosion simulation device platform for thermal barrier coating of gas turbine blades according to claim 1, characterized in that: The sample detection device (3) comprises an adjustable support rod (31) and an infrared thermometer (32) arranged on the adjustable support rod (31), wherein the infrared thermometer (32) faces the tested sample (4) through the observation window (132).

6. The high temperature erosion simulation device platform for thermal barrier coating of gas turbine blades according to any one of claims 1 to 5, characterized in that: The spray gun (22) comprises a mixing chamber (221) and a nozzle (222) which are connected in sequence; A fuel inlet (2211) is arranged above the mixing chamber (221), and an erosion particle inlet (2212) and a compressed air inlet (2213) are arranged diagonally at the rear, and the fuel inlet (2211), the erosion particle inlet (2212) and the compressed air inlet (2213) are all connected to a multi-porous atomizing nozzle in the mixing chamber (221); The mixing chamber (221) is used to mix and atomize the erosion particles, fuel oil and compressed air, and the nozzle (222) is used to ignite the mixed and atomized erosion particles, fuel oil and compressed air to form a flame with the erosion particles to act on the test sample (4).

7. The high temperature erosion simulation device platform for thermal barrier coating of gas turbine blades according to claim 6, characterized in that: The erosion spray gun device (2) further comprises a fuel storage device (23) connected to the fuel inlet (2211), an air compressor (24) connected to the compressed air inlet (2213), and a powder feeder (25) connected to the erosion particle inlet (2212).

8. The high temperature erosion simulation device platform for thermal barrier coating of gas turbine blades according to claim 7, characterized in that: The nozzle wall of the nozzle (222) is provided with a cooling cavity; One end of the cooling chamber is connected to a water inlet (2221), and the other end is connected to a water outlet (2222); the erosion spray gun device (2) further comprises a chiller (26) connected to the water inlet (2221) and the water outlet (2222).

9. The high temperature erosion simulation device platform for thermal barrier coating of gas turbine blades according to claim 8, characterized in that: The erosion spray gun device (2) further comprises an integrated control box (27); The integrated control box (27) is provided with a pipeline system and a control system. The water chiller (26), the powder feeder (25), the compressed air machine (24) and the fuel storage device (23) are all connected to the spray gun (22) through the pipeline system. The control system is used to control the on / off and flow rate of each pipeline.

10. A high temperature erosion simulation test method for thermal barrier coating of gas turbine blades, characterized in that: Using the high temperature erosion simulation device platform of the thermal barrier coating of a gas turbine blade as claimed in any one of claims 1 to 9 comprises the following steps: S1, opening the erosion box (13), installing the test sample (4) on the installation fixture (12), and closing the erosion box (13); S2, adjusting the direction of the spray gun (22) by means of the position adjustment seat (21) so that the spray gun (22) is directly facing the position of the test sample (4); S3, turning on the spray gun (22) to ignite, the spray gun (22) spraying a flame with erosion particles onto the test sample (4) for testing; S4, the sample detection device (3) obtains the temperature and / or erosion condition of the tested sample (4); S5, complete the test.

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