General airflow clamp test assembly for turbine and aeroengine stator vane

Abstract

The application discloses a general airflow clamp test assembly for a turbine and an aero-engine stator vane, which comprises a rotating rod, an extension rod, a compression clamp, a clamp block, liquid pouring polyethylene two-component sealant, a test vane, a connecting plate, an upper disc, a sealing sheet, a lower disc and a movable clamp platform, and a positioning base is arranged on one side of the top of the upper disc, and the rotating rod is arranged on the top of the positioning base. In the application, the air flow is delivered to the channel opening through the air supply connection air pipe of the detection equipment, and the air flow is filled into each air hole after entering the test vane. In the test process, the liquid pouring polyethylene two-component sealant is used to block the air outlet holes of the test vane, so that the air leakage is prevented, the accuracy of detection is affected, the reliability of detection is ensured, no additional air inlet device is needed in the test process, the test efficiency is improved, the labor cost of test is reduced, the connecting plate is used as the connecting conversion structure of the upper disc and the test vane, different products can be tested by replacing different clamp blocks, and the universality of the test assembly is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aero-engine guide vane testing, and in particular to a universal airflow fixture testing assembly for combustion engines and aero-engine stationary blades. Background Art

[0002] As for aircraft engines, the function of the guide vanes in the engine is to increase the ability to withstand high temperatures. In addition to using highly heat-resistant materials, it also needs to inhale airflow to cool it. In order to enable the aircraft to accurately control the size of the cooling airflow during flight, the product must be tested for airflow flow under certain conditions before assembly. At present, whether it is the stator blades of gas turbine hot components or the guide vanes of aircraft engines, whether the airflow flow detection meets the standards is a very important link. However, taking the blades to the fixture to test the airflow will cause inaccurate detection due to airflow leakage, thereby affecting the reliability of the detection. At the same time, the test process requires the use of additional air intake devices, which affects the test efficiency and increases the labor cost of the test. Therefore, it is necessary to design a universal airflow fixture test assembly for gas turbines and aircraft engine stators. Summary of the Invention

[0003] (1) Technical issues to be resolved

[0004] The purpose of the present invention is to provide a universal airflow fixture test assembly for gas turbine and aircraft engine stator blades, so as to solve the problems that the existing guide vane blade testing device may cause inaccurate detection due to airflow leakage, and the testing process requires the use of an additional air intake device, which affects the test efficiency and increases the test labor cost.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a universal airflow fixture test assembly for gas turbine and aircraft engine stator blades, comprising a rotating rod, a fixing bolt, a rotating block, a locking block, a telescopic rod, a positioning block, a pressure clamp, a top block, a support spring, a positioning base, a fixture block, a liquid cast polyethylene two-component sealant, a test blade, a channel opening, a connecting plate, an upper disc, a sealing sheet, a lower disc, a movable fixture platform, a vent pipe, a closed door panel and a bottom block. A positioning base is provided on one side of the top of the upper disc, and a rotating rod is provided on the top of the positioning base. The bottom of the rotating rod is fixedly sleeved with a bottom block, and the top of the bottom block is provided with a support spring. The top of the support spring is fixed on the top block, and the top block is slidably connected to the rotating rod.

[0007] Preferably, a rotating block is slidably connected to the rotating rod, and a fixing bolt is fitted in a threaded hole symmetrically opened on one side of the rotating block, one end of the fixing bolt is fitted on the rotating rod, the bottom of the rotating block is fixed on the top clamping block, and a telescopic rod is slidably connected in the rotating block.

[0008] Preferably, a locking block is connected to the groove on one side of the rotating block through bolts, and the locking block is attached to the telescopic rod. A positioning block is provided at one end of the telescopic rod, and a pressure clamp is provided on the positioning block.

[0009] Preferably, a connecting plate is fixedly installed at the top center of the upper disc, and a test blade is provided on the top of the connecting plate. A channel opening is opened on the test blade, and a liquid cast polyethylene two-component sealant is fitted in the channel opening, and the liquid cast polyethylene two-component sealant is fitted in the fixture block.

[0010] Preferably, a sealing plate is provided at the bottom of the upper disc, and the bottom of the sealing plate is attached to the lower disc, the lower disc is fixed in a groove opened on the top of the movable fixture platform, a ventilation pipe is sleeved in the through hole opened on the lower disc, a closed door panel is provided on the movable fixture platform, and one end of the ventilation pipe is sleeved in the through hole on the closed door panel.

[0011] (3) Beneficial effects

[0012] The universal airflow fixture test assembly for gas turbines and aircraft engine stator blades provided by the present invention has the following advantages: through the closed structure at the bottom composed of a lower disc, an upper disc and a sealing plate, the air source of the detection equipment is connected to the ventilation pipe, and the airflow is delivered to the channel mouth. After the airflow enters the test blade, it is poured into each air hole. At the same time, the air outlet of the test blade is blocked by liquid cast polyethylene two-component sealant to prevent the airflow from leaking and affecting the accuracy of the detection, thereby ensuring the reliability of the detection. During the test, no additional air intake device is required, which improves the test efficiency and reduces the labor cost of the test. The connecting plate serves as a connection conversion structure between the upper disc and the test blade. Different products can be tested by replacing different fixture blocks, thereby improving the versatility of the test assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 for Figure 1 A magnified view of a local area in the middle A region;

[0016] Figure 3 for Figure 1 A magnified view of a local area in region B;

[0017] Figure 4 for Figure 1 A magnified view of a local area in the middle C region.

[0018] In the figure: 1. Rotating rod; 2. Fixing bolt; 3. Rotating block; 4. Locking block; 5. Telescopic rod; 6. Positioning block; 7. Pressing clamp; 8. Top clamp; 9. Support spring; 10. Positioning base; 11. Fixture block; 12. Liquid cast polyethylene two-component sealant; 13. Test blade; 14. Channel opening; 15. Connecting plate; 16. Upper disc; 17. Sealing piece; 18. Lower disc; 19. Mobile fixture platform; 20. Ventilation pipe; 21. Closing door panel; 22. Bottom clamp. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0021] See also Figure 1-4The present invention provides an embodiment of a universal airflow fixture test assembly for gas turbines and aircraft engine stator blades, comprising a rotating rod 1, a fixing bolt 2, a rotating block 3, a locking block 4, a telescopic rod 5, a positioning block 6, a pressure clamp 7, a top clamp 8, a support spring 9, a positioning base 10, a fixture block 11, a liquid cast polyethylene two-component sealant 12, a test blade 13, a channel opening 14, a connecting plate 15, an upper disc 16, a sealing sheet 17, a lower disc 18, a movable fixture platform 19, a vent pipe 20, a closed door panel 21 and a bottom clamp 22. A positioning base 10 is provided on one side of the top of the disc 16, and a rotating rod 1 is provided on the top of the positioning base 10. The bottom of the rotating rod 1 is fixedly sleeved with a bottom block 22, and a support spring 9 is provided on the top of the bottom block 22. The top of the support spring 9 is fixed on the top block 8, and the top block 8 is slidably connected to the rotating rod 1. A rotating block 3 is slidably connected to the rotating rod 1, and a fixing bolt 2 is matched and connected in the threaded hole symmetrically opened on one side of the rotating block 3. One end of the fixing bolt 2 is fitted on the rotating rod 1, and the bottom of the rotating block 3 is fixed. Fixed on the top block 8, and the telescopic rod 5 is slidably connected in the rotating block 3, and the locking block 4 is connected to the telescopic rod 5 through a bolt in the groove opened on one side of the rotating block 3, and the locking block 4 is fitted on the telescopic rod 5, and a positioning block 6 is provided at one end of the telescopic rod 5, and a pressure clamp 7 is provided on the positioning block 6. A connecting plate 15 is fixedly installed at the top center of the upper disc 16, and a test blade 13 is provided on the top of the connecting plate 15. A channel opening 14 is opened on the test blade 13, and a liquid cast polyethylene two-component seal is fitted in the channel opening 14. Glue 12, liquid cast polyethylene two-component sealant 12 is sleeved in the fixture block 11, a sealing sheet 17 is provided at the bottom of the upper disc 16, and the bottom of the sealing sheet 17 is affixed to the lower disc 18, the lower disc 18 is fixed in a groove opened at the top of the mobile fixture platform 19, a vent pipe 20 is sleeved in the through hole opened in the lower disc 18, a closed door panel 21 is provided on the mobile fixture platform 19, and one end of the vent pipe 20 is sleeved in the through hole in the closed door panel 21, the sealing sheet 17 is provided to improve the sealing performance of the test assembly;

[0022] Specifically, when in use, the blade clamp sealing structure composed of the clamp block 11, liquid cast polyethylene two-component sealant 12 and test blade 13 is installed on the connecting plate 15, and the connecting plate 15 is locked and fixed on the upper disc 16. Since the gas turbine stator blades and the aeroengine guide vane blades are different products, the connecting plate 15 plays a conversion role, so that the products of the two fields can be shared, which improves the applicability of the test assembly; after the blade clamp sealing structure is installed, the rotating and telescopic structure composed of the rotating rod 1, the fixing bolt 2, the rotating block 3, the locking block 4, the telescopic rod 5, the positioning block 6 and the pressure clamp 7 is adjusted. When adjusting, take the rotating rod 1 as the center, loosen the fixing bolt 2 for overall rotation, and loosen the locking block 4 to adjust the telescopic rod 5. After adjusting the height and position, tighten the fixing bolt 2 and the locking block 4 to fix the entire rotating and telescopic structure. The support spring 9 plays a rebound role to prevent the structure from sliding down due to excessive weight. After the rotating and telescopic structure is fixed, the pressure clamp 7 is pushed to compress the clamp block 11, and the elastic force of the liquid cast polyethylene two-component sealant 12 in the clamp block 11 is used to seal the pores of the test blade 13. The channel opening 14 serves as the air inlet channel at the bottom of the test blade 13. The sealing plate 17 is used to seal the channel opening 14 and the entire sealing structure, so that the air flow flows into the test blade 13 through the channel opening 14. The lower disc 18 is connected to the mobile clamp platform 19 for corresponding locking connection, and the air source of the detection equipment is connected to the vent pipe 20 to transport the air flow to the channel opening 14. After the air flow enters the test blade 13, it is poured into each pore. At this time, the air outlet of the test blade 13 is blocked by the liquid cast polyethylene two-component sealant 12 above, thereby achieving the effect of accurately detecting the air flow rate of the test blade 13.

[0023] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0024] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A universal air flow fixture test assembly for gas turbine and aircraft engine stator blades, comprising a rotating rod (1), a fixing bolt (2), a rotating block (3), a locking block (4), a telescopic rod (5), a positioning block (6), a pressure clamp (7), a top clamping block (8), a support spring (9), a positioning base (10), a fixture block (11), a liquid cast polyethylene two-component sealant (12), a test blade (13), a channel opening (14), a connecting plate (15), an upper disc (16), a sealing sheet (17), a lower disc (18), a movable fixture platform (19), a vent pipe (20), a closing door panel (21) and a bottom clamping block (22), characterized in that: A positioning base (10) is provided on one side of the top of the upper disc (16), and a rotating rod (1) is provided on the top of the positioning base (10), the bottom of the rotating rod (1) is fixedly sleeved with a bottom block (22), and a support spring (9) is provided on the top of the bottom block (22), the top of the support spring (9) is fixed on the top block (8), and the top block (8) is slidably connected to the rotating rod (1), the rotating rod (1) is slidably connected with a rotating block (3), and a fixing bolt (2) is matched and connected in a threaded hole symmetrically opened on one side of the rotating block (3), one end of the fixing bolt (2) is fitted on the rotating rod (1), the bottom of the rotating block (3) is fixed on the top block (8), and a telescopic rod (5) is slidably connected in the rotating block (3), a locking block (4) is matched and connected in a groove opened on one side of the rotating block (3) through a bolt, and the locking block (4) is fitted on the telescopic rod (5), and one end of the telescopic rod (5) is provided A positioning block (6) is provided, and a pressure clamp (7) is provided on the positioning block (6). A connecting plate (15) is fixedly installed at the top center of the upper disc (16), and a test blade (13) is provided on the top of the connecting plate (15). A channel opening (14) is provided on the test blade (13), and a liquid cast polyethylene two-component sealant (12) is fitted in the channel opening (14). The liquid cast polyethylene two-component sealant (12) is fitted on the fixture block ( 11), a sealing sheet (17) is provided at the bottom of the upper disc (16), and the bottom of the sealing sheet (17) is attached to the lower disc (18), the lower disc (18) is fixed in a groove opened at the top of the movable fixture platform (19), a vent pipe (20) is sleeved in the through hole opened on the lower disc (18), a closed door panel (21) is provided on the movable fixture platform (19), and one end of the vent pipe (20) is sleeved in the through hole on the closed door panel (21).

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