A high temperature adjustment device for an aircraft turbine engine guide vane passage area

Abstract

The application discloses a kind of aviation turbine engine guider flow passage area high temperature adjusting device, including positioning mechanism, guide mechanism, pressure disc, pressure cylinder, pressure mechanism, the positioning mechanism is used to limit fixed guider, the upper portion of the guider is provided with pressure disc, the side of pressure disc close to guider is detachably provided with several pressure blocks along the circumference direction corresponding to the blade of guider, and the pressure block is used to resist pressure blade;The top of the pressure disc is provided with pressure cylinder, and the top of the pressure cylinder is connected with pressure mechanism;The guide mechanism is arranged between the pressure disc and the positioning mechanism, and the pressure disc is lifted up and down along the guide mechanism.The pressure cylinder, pressure disc and pressure block of the present application gradually transmit stable and uniform pressure to each blade of the guider, adjust the angle of the blade at high temperature, reduce the loss to the blade, and accurately adjust the throat area of the blade, with good practicability.

Description

Technical Field

[0001] This invention belongs to the technical field of channel area adjustment for aero-turbine engine guide vanes, and specifically relates to a high-temperature adjustment device for the flow channel area of ​​an aero-turbine engine guide vane. Background Technology

[0002] The guide vane of an aero-engine is one of the key components. Airflow passes through the guide vane to provide compressed air to the rotating turbine. By changing the passage area of ​​the guide vane, the output power of the aero-engine can be effectively altered. Currently, common methods for adjusting the throat area of ​​guide vane blades include: manual blade grinding, blade trailing edge milling, and manual blade prying. However, the biggest drawbacks of these methods are that grinding and milling can damage the high-temperature resistant coating on the blade surface; excessive grinding or milling can cause significant damage to the blade; and in the manual prying method, if too much force is applied, the blade may break. Summary of the Invention

[0003] The purpose of this invention is to provide a high-temperature regulating device for the flow channel area of ​​an aero-turbine engine guide vane, which aims to solve the above-mentioned problems.

[0004] This invention is mainly achieved through the following technical solutions:

[0005] A high-temperature adjustment device for the flow channel area of ​​an aero-turbine engine guide vane includes a positioning mechanism, a guiding mechanism, a pressure plate, a pressure cylinder, and a pressure mechanism. The positioning mechanism is used to limit and fix the guide vane. A pressure plate is provided above the guide vane. Several pressure blocks are detachably provided along the circumferential direction of the pressure plate near the guide vane, corresponding to the blades of the guide vane. The pressure blocks are used to press against the blades. A pressure cylinder is provided on the top of the pressure plate, and the top of the pressure cylinder is connected to the pressure mechanism. A guiding mechanism is provided between the pressure plate and the positioning mechanism, and the pressure plate moves up and down along the guiding mechanism.

[0006] To better realize the present invention, the guiding mechanism further includes a plurality of guide posts, and a plurality of guide posts are provided between the pressure plate and the positioning mechanism. The pressure plate is provided with mounting holes corresponding to the guide posts, and the guide posts are slidably connected to the mounting holes.

[0007] To better realize the present invention, the guiding mechanism further includes a central stud and a pressure nut. A central stud is provided in the middle between the pressure plate and the positioning mechanism. A central hole is provided in the middle of the pressure plate. The top of the pressure nut passes through the central hole of the pressure plate and is connected to the pressure nut.

[0008] To better realize the present invention, it further includes a wrench, an operating space is provided between the pressure cylinder and the pressure plate, and an opening communicating with the operating space is provided on one side of the pressure cylinder. One end of the wrench extends into the operating space through the opening and is connected to the pressure nut for rotating the pressure nut.

[0009] To better realize the present invention, it further includes a clamping block assembly, wherein the tail end of the blade is provided with a clamping block assembly, and the pressing block abuts against the clamping block assembly.

[0010] To better realize the present invention, the clamping block assembly further includes an upper clamping block and a lower clamping block, with the blade clamped between the upper clamping block and the lower clamping block, and the other ends of the upper clamping block and the lower clamping block being fixedly connected by bolts, with the upper clamping block abutting against the pressure block.

[0011] To better realize the present invention, the pressure plate is further provided with a plurality of arc-shaped grooves along the circumference, and the pressure plate is connected to the pressure block by a locking screw. One end of the locking screw passes through the arc-shaped groove and is threadedly connected to the top of the pressure block.

[0012] To better realize the present invention, the top of the pressure block is provided with two locking screws, and the pressure plate is provided with several sets of arc grooves along the circumference, each set of arc grooves including two parallel arc grooves.

[0013] To better realize the present invention, the positioning mechanism further includes a chassis and a pressure ring. The pressure ring is provided on the top of the chassis. A plurality of studs are provided circumferentially between the pressure ring and the chassis. The guide is positioned and installed between the pressure ring and the chassis. The chassis is provided with a positioning boss and a positioning groove corresponding to the hole and flange at the bottom of the guide.

[0014] To better realize the present invention, the bottom of the chassis is provided with several slots corresponding to the transfer fork for inserting the strips of the transfer fork.

[0015] The beneficial effects of this invention are as follows:

[0016] (1) The present invention uses a pressure cylinder, pressure plate and pressure block to gradually and evenly transmit pressure to each blade of the guide, realizes the adjustment of blade angle at high temperature, reduces the loss of blade, and can accurately adjust the throat area of ​​blade, which has good practicality.

[0017] (2) The present invention improves the motion stability of the pressure plate by means of guide post and central stud, and the lifting height of the pressure plate can be manually finely adjusted by means of wrench and pressure nut design, so as to accurately control the adjustment of blades and has good practicality.

[0018] (3) The present invention achieves the positioning of the guide and ensures the exposed operation of the blade by setting the chassis and pressure ring. Moreover, the setting of the slot at the bottom of the chassis facilitates the insertion and handling of the transfer fork, which has good practicality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the high-temperature adjustment device for the guide channel area of ​​the present invention;

[0020] Figure 2 This is a front view of the high-temperature adjustment device for the guide channel area of ​​the present invention;

[0021] Figure 3 This is a cross-sectional view of the high-temperature adjustment device for the guide channel area of ​​the present invention.

[0022] Figure 4 This is a schematic diagram of the connection structure between the guide column and the chassis;

[0023] Figure 5 This is a schematic diagram of the connection structure between the pressure block and the clamping block assembly;

[0024] Figure 6 This is a schematic diagram of the connection structure between the upper clamping block and the lower clamping block.

[0025] Figure 7 This is a schematic diagram of the transfer fork structure;

[0026] Figure 8 This is a schematic diagram of the pressure plate structure.

[0027] Wherein: 1-pressure cylinder, 2-pressure plate, 3-pressure nut, 4-center stud, 5-guide post, 6-pressure block, 7-upper clamping block, 8-lower clamping block, 9-base plate, 10-transfer fork, 11-wrench, 12-slot, 13-arc groove, 14-pressure ring. Detailed Implementation

[0028] Example 1:

[0029] A high-temperature regulating device for the flow channel area of ​​an aero-turbine engine guide vane, such as Figures 1-5 As shown, the device includes, from top to bottom, a pressure cylinder 1, a pressure plate 2, and a positioning mechanism. The positioning mechanism is used to limit and fix the guide, exposing the guide blades for easy subsequent adjustment. The pressure cylinder 1 is connected to the pressure mechanism to transmit pressure to the pressure plate 2. Several pressure blocks 6 are arranged circumferentially around the bottom of the pressure plate 2, corresponding to the blades. The pressure blocks 6 abut against the blades via a clamping block assembly. Several guide posts 5 are provided between the pressure plate 2 and the positioning mechanism, allowing the pressure plate 2 to move up and down along the guide posts 5.

[0030] Preferably, such as Figure 1As shown, the positioning mechanism includes a base 9 and a pressure ring 14. The pressure ring 14 is disposed on the upper part of the base 9. A plurality of studs are arranged circumferentially between the pressure ring 14 and the base 9. The guide is positioned and installed between the pressure ring 14 and the base 9. The base 9 is provided with a positioning boss and a positioning groove corresponding to the hole and flange at the lower part of the guide. Preferably, as shown... Figure 2 , Figure 7 As shown, the bottom of the chassis 9 is provided with a number of slots 12 corresponding to the transfer fork 10 for inserting the strips of the transfer fork 10.

[0031] Preferably, such as Figure 4 , Figure 8 As shown, it also includes a central stud 4. A central hole is provided in the middle of the pressure plate 2, and an operating space is provided between the pressure cylinder 1 and the pressure plate 2. The bottom of the central stud 4 is locked to the base 9, and its top passes through the central hole of the pressure plate 2 and extends into the operating space to connect with the pressure nut 3. Preferably, one side of the pressure cylinder 1 has an opening communicating with the operating space. The wrench 11 extends into the operating space from the opening and connects with the pressure nut 3 to rotate the pressure nut 3. The central stud 4 guides the movement of the pressure plate 2. The pressure nut 3 limits the position of the pressure plate 2, and the wrench 11 allows for manual fine-tuning of the pressure plate 2's position, enabling precise adjustment of the blade angle.

[0032] Preferably, such as Figure 6 As shown, the clamping block assembly includes an upper clamping block 7 and a lower clamping block 8. A blade is clamped between the upper clamping block 7 and the lower clamping block 8. The other ends of the upper clamping block 7 and the lower clamping block 8 are fixedly connected by bolts. The upper clamping block 7 abuts against the pressure block 6. Preferably, the pressure plate 2 has a plurality of arc-shaped grooves 13 arranged circumferentially. The pressure plate 2 is connected to the pressure block 6 by locking screws. One end of the locking screw passes through the arc-shaped groove 13 and is threadedly connected to the top of the pressure block 6. Preferably, the top of the pressure block 6 is provided with two locking screws. The pressure plate 2 has a plurality of sets of arc-shaped grooves 13 arranged circumferentially, and each set of arc-shaped grooves 13 includes two parallel arc-shaped grooves 13.

[0033] In use, the guide is fitted to the chassis 9, and then the guide is fixedly positioned around its periphery using the pressure ring 14 and studs, exposing the guide blades. Then, the pressure plate 2 and pressure cylinder 1 are installed sequentially. The initial flow channel area of ​​the guide can be pre-measured, and then transported using the cooperation of the transfer fork 10 and chassis 9. The entire assembly is heated, and then force is applied to the pressure cylinder 1 to transfer the force to the blades through the pressure plate 2, pressure block 6, and clamping block assembly, adjusting the blade angle. The entire device is then moved to a high-temperature furnace again using the transfer fork 10 for heat preservation and cooling. The flow channel area of ​​the guide is then measured again, and evaluated. The final adjustment is achieved by repeating the above steps multiple times. Alternatively, the flow channel area of ​​the guide can be adjusted by pressing the blades in one step using the relationship between pressure and blade angle. The quantitative adjustment of the blades can also be fed back by the height adjustment of the pressure block 6. The blades can also be finely adjusted using the wrench 11, ultimately achieving precise adjustment at high temperatures.

[0034] Example 2:

[0035] A high-temperature regulating device for the flow channel area of ​​an aero-turbine engine guide vane, such as Figures 1-8 As shown, a guide is placed above the chassis 9. The chassis 9 has a circular positioning boss and a square positioning groove, which cooperate with the circular hole and square flange at the bottom of the guide to position it. A pressure ring 14 is pressed into the middle of the guide, pressing against the outer square flange. The pressure ring 14 and the chassis 9 are connected by screws, thus firmly pressing the guide onto the chassis 9. A pressure plate 2 is positioned above the chassis 9, and pressure blocks 6 are provided on the periphery of the pressure plate 2 corresponding to the guide blades. A clamping block assembly is provided at the tail end of the blades, and the pressure blocks 6 abut against the clamping block assembly. The pressure cylinder 1 presses against the pressure plate 2, and the press can apply a preset force to the pressure cylinder 1. The force is transmitted to the guide blades through the pressure plate 2, pressure blocks 6, and clamping block assembly.

[0036] Preferably, such as Figures 3-5 , Figure 8 As shown, a central stud 4 and three guide pins 5 are vertically mounted in the center of the chassis 9. The pressure plate 2 has four holes, corresponding to the central stud 4 and guide pins 5 respectively, allowing the pressure plate 2 to move vertically up and down. The pressure nut 3 is fitted onto the central stud 4 to fix the pressure plate 2. The wrench 11 is used to turn the pressure nut 3.

[0037] Preferably, such as Figure 5 , Figure 8 As shown, 14 pressure blocks 6 are installed on the edge of the pressure plate 2, corresponding to the 14 blades of the guide. The upper clamping block 7 and the lower clamping block 8 constitute a clamping block assembly, which is fitted onto the blades of the guide, and the pressure blocks 6 press on top of the clamping block assembly.

[0038] like Figure 2 , Figure 3 , Figure 5 , Figure 7 As shown, there are three long slots on the lower part of the chassis 9, so that the three inserts of the transfer fork 10 can be inserted into the long slots, thus allowing the entire device to be moved.

[0039] During use, the guide vanes of this invention require high-temperature calibration at 500°C to adjust their flow channel area. The specific data for the channel area is measured using professional flow testing equipment. The adjustment device of this invention can perform high-temperature calibration of the vanes; the specific steps are as follows:

[0040] First, by placing the guide into a flow testing device, the flow channel area of ​​the guide can be measured.

[0041] Second, the adjusting device and guide of this invention are combined and placed in a high-temperature furnace. A corresponding heating program is set to heat the entire assembly to a high temperature of 540°C.

[0042] Third, after reaching the set high temperature of 540°C, the entire unit is removed from the high-temperature furnace using the transfer fork 10 and placed on the table of the small press.

[0043] Fourth, a set force is applied to the pressure cylinder 1 by a small press. The force is then transmitted to the guide vanes through the pressure plate 2, pressure block 6, and clamping block assembly. Since the guide vanes are still at a high temperature and the vanes are relatively soft, a small force is enough to deform the guide vanes and change the flow channel area.

[0044] Fifth, use the transfer fork 10 to put the whole thing back into the high-temperature furnace for heat preservation and cooling.

[0045] Sixth, after cooling, the guide vane is put back into the flow testing equipment for testing, and the flow channel area of ​​the guide vane is measured again.

[0046] This invention can effectively modify the profile of the guide vanes, thereby altering the flow channel area. Through the pressure cylinder 1, pressure plate 2, and pressure block 6, this invention achieves a stable and uniform gradual transmission of pressure to each vane of the guide vane, enabling adjustment of the vane angle at high temperatures, reducing vane damage, and precisely adjusting the throat area of ​​the vanes, thus demonstrating good practicality.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A high-temperature adjustment device for the flow channel area of ​​an aero-turbine engine guide vane, characterized in that, The device includes a positioning mechanism, a guiding mechanism, a pressure plate (2), a pressure cylinder (1), and a pressure mechanism. The positioning mechanism is used to limit and fix the guide. A pressure plate (2) is provided above the guide. Several pressure blocks (6) are detachably provided on the side of the pressure plate (2) near the guide along the circumferential direction corresponding to the blades of the guide. The pressure blocks (6) are used to press against the blades. A pressure cylinder (1) is provided on the top of the pressure plate (2). The top of the pressure cylinder (1) is connected to the pressure mechanism. A guiding mechanism is provided between the pressure plate (2) and the positioning mechanism. The pressure plate (2) moves up and down along the guiding mechanism. The guiding mechanism includes several guide posts (5), and several guide posts (5) are provided between the pressure plate (2) and the positioning mechanism. The pressure plate (2) is provided with mounting holes corresponding to the guide posts (5), and the guide posts (5) are slidably connected to the mounting holes. The guiding mechanism also includes a central stud (4) and a pressure nut (3). A central stud (4) is provided in the middle between the pressure plate (2) and the positioning mechanism. A central hole is provided in the middle of the pressure plate (2). The top of the central stud passes through the central hole of the pressure plate (2) and is connected to the pressure nut (3). It also includes a wrench (11), an operating space is provided between the pressure cylinder (1) and the pressure plate (2), and an opening communicating with the operating space is provided on one side of the pressure cylinder (1). One end of the wrench (11) extends into the operating space through the opening and is connected to the pressure nut (3) for rotating the pressure nut (3). It also includes a clamping block assembly, wherein the tail end of the blade is provided with a clamping block assembly, and the pressing block (6) abuts against the clamping block assembly; The clamping block assembly includes an upper clamping block (7) and a lower clamping block (8). The blade is clamped between the upper clamping block (7) and the lower clamping block (8). The other ends of the upper clamping block (7) and the lower clamping block (8) are fixedly connected by bolts. The upper clamping block (7) abuts against the pressure block (6).

2. The high-temperature adjustment device for the flow channel area of ​​an aero-turbine engine guide vane according to claim 1, characterized in that, The pressure plate (2) is provided with several arc-shaped grooves (13) along the circumference. The pressure plate (2) is connected to the pressure block (6) by a locking screw. One end of the locking screw passes through the arc-shaped groove (13) and is threaded to the top of the pressure block (6).

3. The high-temperature adjustment device for the flow channel area of ​​an aero-turbine engine guide vane according to claim 2, characterized in that, The top of the pressure block (6) is provided with two locking screws, and the pressure plate (2) is provided with several sets of arc grooves (13) along the circumference. Each set of arc grooves (13) includes two parallel arc grooves (13).

4. The high-temperature adjustment device for the flow channel area of ​​an aero-turbine engine guide vane according to claim 1, characterized in that, The positioning mechanism includes a chassis (9) and a pressure ring (14). The pressure ring (14) is provided on the top of the chassis (9). Several studs are provided circumferentially between the pressure ring (14) and the chassis (9). The guide is positioned and installed between the pressure ring (14) and the chassis (9). The chassis (9) is provided with a positioning boss and a positioning groove corresponding to the hole and flange at the bottom of the guide.

5. A high-temperature regulating device for the flow channel area of ​​an aero-turbine engine guide vane according to claim 4, characterized in that, The bottom of the chassis (9) is provided with several slots (12) corresponding to the transfer fork (10) for inserting the strips of the transfer fork (10).

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