Turbine rotor air baffle disassembly device and disassembly method

Abstract

The present invention discloses a decomposition device for a turbine rotor air baffle, which is used to separate the air baffle on the rotor from the wheel disc. The device comprises a base, a rotating assembly, a fixing assembly and a prying mechanism. A central shaft is fixedly connected to the base so that the wheel disc and the central shaft are coaxially assembled and fixedly connected to the base. The rotating assembly is detachably connected to the central shaft. The fixing assembly is arranged on the rotating assembly to fix the small air baffle. The prying mechanism uses a lever principle to move the lug of the large air baffle out of the positioning groove. The rotating assembly is rotated to rotate the small air baffle connected to the fixing assembly to the inlet and outlet on the wheel disc, and then the small air baffle is pulled out of the inlet and outlet and separated from the wheel disc. The decomposition device for the turbine rotor air baffle realizes the circumferential rotation of the entire circle of air baffles, so that the small air baffles can be rotated to the inlet and outlet for separation and the large air baffles can be non-destructively decomposed, thereby reducing the risk of rotor damage.

Description

Technical Field

[0001] The present invention relates to the technical field of aero-engine assembly, and in particular to a device for disassembling a turbine rotor air baffle. Furthermore, the present invention also relates to a method for disassembling a turbine rotor air baffle. Background Art

[0002] In aircraft gas turbine engine rotors, the use of small air baffles to retain rotor blades is a common method. The rotor consists of a disc, blades, and large air baffles. A full ring of small air baffles is arranged between the blades and the disc. The disc has inlets and outlets for the small air baffles and retaining slots to prevent the small and large air baffles from escaping. The large air baffles block the inlets and outlets of the small air baffles, and the lugs on the large air baffles mate with positioning slots at the inlets and outlets, securing the large and small air baffles to the disc.

[0003] In the above-mentioned configuration, the small air baffle not only secures the rotor blades, preventing them from axially shifting and dislodging, but also seals air, preventing airflow from flowing through the gaps between the blade tenons, thereby improving engine performance. However, due to the tight assembly requirements of the small air baffles and the high temperature of the rotor during engine operation, the small air baffles are difficult to assemble and disassemble. Because the blades are interlocked, it is difficult to adjust the blades to create a gap between the tenons and the small air baffles, thereby disassembling the small air baffles. Therefore, the key to disassembly lies in removing the lugs and size restrictions of the large air baffles, allowing each small air baffle to be separated from the single air baffle entrance and exit. Because the gaps between adjacent small air baffles are extremely small, and each small air baffle has annular bosses on its inner and outer sides that mate with the disc and blade slots, respectively, circumferential rotation of the small air baffles is difficult, even with existing tools such as screwdrivers, copper rods, and hammers. This is difficult to achieve in actual operation. Typically, the rotor is cut and destroyed using an electric spark or other tool, and the remaining small air baffles are then separated using a screwdriver, copper rod, hammer, etc. This cutting process carries a high risk of rotor damage; using tools such as screwdrivers, which are not highly compatible with the rotor, can also easily cause scratches on the rotor. Summary of the Invention

[0004] The present invention provides a disassembly device and a disassembly method for a turbine rotor air baffle, so as to solve the technical problem of how to easily separate the air baffle and reduce the risk of rotor damage.

[0005] According to one aspect of the present invention, a disassembly device for a turbine rotor air baffle is provided, which is used to separate the air baffle on the rotor from the wheel disc, including a base, a rotating assembly, a fixing assembly and a prying mechanism. A central shaft is fixedly connected to the base so that the wheel disc is coaxially assembled with the central shaft and fixedly connected to the base. The rotating assembly is detachably connected to the central shaft. The fixing assembly is arranged on the rotating assembly to fix a small air baffle. The prying mechanism uses a lever principle to move the lug of the large air baffle out of the positioning groove. By rotating the rotating assembly to rotate the small air baffle connected to the fixing assembly to the inlet and outlet on the wheel disc, the small air baffle is pulled out from the inlet and outlet and separated from the wheel disc.

[0006] Furthermore, the rotating assembly includes a turntable rotatably connected to the central shaft and coaxially arranged, a plurality of cantilevers fixed on the turntable, and a force-applying part detachably connected to the turntable.

[0007] Furthermore, the free end of the cantilever is provided with a first sliding groove with an opening facing the base, and the fixing component is arranged in the first sliding groove. The fixing component includes a fixing screw, a slider, a positioning pin and a limit screw. The fixing screw passes through the cantilever and extends into the first sliding groove and is then threadedly connected to the slider. A second sliding groove is provided on the slider, and the positioning pin is slidably connected to the slider through the second sliding groove. The limit screw passes through the slider and abuts against the positioning pin. The positioning pin extends out from one side of the slider and is connected to the small air baffle.

[0008] Furthermore, the second sliding groove includes a flange groove and a belly groove connected to the flange groove, the positioning pin includes a flange portion and a belly portion connected to the flange portion, the flange portion is embedded in the flange groove, the belly portion is embedded in the belly groove and the end of the belly portion away from the flange portion is connected to the small air baffle.

[0009] Furthermore, a long hole connected to the first sliding slot is opened on the cantilever, the length direction of the long hole is consistent with the length direction of the first sliding slot, and the length direction of the first sliding slot is perpendicular to the length direction of the second sliding slot.

[0010] Furthermore, the central shaft includes a bottom column, a first support column, a second support column and a threaded column, which are arranged in sequence from the base to the turntable and whose radial dimensions decrease in sequence. The bottom column is fixedly connected to the base, the radial dimension of the center hole of the wheel disc matches the outer diameter of the first support column and the wheel disc is sleeved on the first support column. The step formed by the first support column and the second support column is used to support the turntable. A nut is connected to the threaded column, and the nut abuts against the turntable.

[0011] Furthermore, a bushing is provided between the second support column and the turntable, an end surface of a first end of the bushing abuts against the nut, and a second end of the bushing abuts against the turntable.

[0012] Furthermore, a support ring for supporting the wheel disc is provided between the base and the wheel disc, and the support ring is coaxially arranged with the central shaft.

[0013] Furthermore, the decomposition device of the turbine rotor air baffle also includes a protective gasket, which is in contact with the wheel disc and is used to provide a support point for the prying mechanism.

[0014] According to another aspect of the present invention, a method for disassembling a turbine rotor air baffle is provided, wherein the air baffle on the rotor is separated from the wheel disc by using the air baffle disassembly device as described above, comprising the following steps:

[0015] S100: Place the rotor on the support ring and insert the anti-rotation pin through the base into the wheel disc;

[0016] S200: Fitting the protective gasket to the wheel disc, and using a prying mechanism to remove the lug of the large air baffle from the positioning groove on the wheel disc with the protective gasket as a support surface;

[0017] S300: Adjust the position of the positioning pin by moving the slider and the positioning pin so that the positioning pin fits into the circular hole on the small air baffle;

[0018] S400: rotating the turntable by the force applying portion, thereby driving the entire circle of small air baffles to rotate along the circumference of the turntable through the positioning pins, so that the small air baffles rotate to the entrance and exit, thereby achieving the decomposition of the small air baffles;

[0019] S500: After the small air baffles are separated, the blades at the corresponding positions are separated from the support of the small air baffles and sink; when more small air baffles are separated, the number of sinking blades also increases accordingly, so that the amplitude of the blade sinking also increases, causing the tenon of the sunken blade to fall off from the large air baffle, and then the large air baffle is separated along the groove direction of the turntable.

[0020] The present invention has the following beneficial effects:

[0021] The present invention provides a device for disassembling a turbine rotor air baffle. First, the rotor disc is fixed to a base. At this time, the rotor passes through a central shaft and is coaxially arranged with the central shaft. Then, a prying mechanism is used to pry the lug of the large air baffle out of the positioning groove with the rotor surface as a support point to eliminate the circumferential restriction on the large air baffle, so that the large air baffle can rotate circumferentially around the disc. Then, a fixing assembly is used to fix the small air baffle. At this time, the rotating assembly connected to the central shaft is rotated, thereby driving the fixing assembly. Circumferential rotation around the central axis causes the small and large air baffles to rotate simultaneously around the wheel disc. As the small air baffles rotate one by one to the inlet and outlet on the wheel disc, they can be pulled out and separated one by one through the inlet and outlet of the wheel disc, and then the small air baffles are removed. After the small air baffles are separated from the wheel disc, the blades connected to the small air baffles sink after breaking away from the support of the small air baffles. After a large number of small air baffles are separated from the wheel disc, the slots on the rotating disc are exposed, and finally the large air baffles are separated along the slots. The decomposition device of the turbine rotor air baffles realizes the circumferential rotation of the air baffles in a full circle, allowing the small air baffles to rotate to the inlet and outlet for separation and the non-destructive decomposition of the large air baffles, thereby reducing the risk of rotor damage.

[0022] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 1 is a schematic structural diagram of a decomposition device for a turbine rotor air baffle according to an embodiment of the present invention;

[0025] Figure 2 1 is a schematic structural diagram of a decomposition device for a turbine rotor air baffle according to another embodiment of the present invention;

[0026] Figure 3 yes Figure 2 Enlarged view of part A;

[0027] Figure 4 It is a structural diagram of a rotor in the prior art;

[0028] Figure 5 yes Figure 4 Enlarged view of part B;

[0029] Figure 6 is a structural schematic diagram of a prying mechanism according to an embodiment of the present invention;

[0030] Figure 7is a schematic structural diagram of a rotating assembly according to an embodiment of the present invention;

[0031] Figure 8 is a structural diagram of a fixing assembly according to an embodiment of the present invention;

[0032] Figure 9 2 is a schematic structural diagram of a central shaft according to an embodiment of the present invention.

[0033] Figure 10 2 is a schematic structural diagram of a slider according to an embodiment of the present invention.

[0034] Legend:

[0035] 100, base; 101, fixing groove; 200, rotating assembly; 201, turntable; 202, cantilever; 203, first sliding groove; 204, elongated hole; 205, force-applying portion; 300, fixing assembly; 301, fixing screw; 302, slider; 303, second sliding groove; 304, positioning pin; 305, limit screw; 306, flange groove; 307, belly groove; 308, flange portion; 309, belly portion; 400, central shaft; 401, base column ; 402, first support column; 403, second support column; 404, threaded column; 405, bushing; 406, nut; 500, prying mechanism; 600, protective gasket; 700, support ring; 800, rotor; 801, wheel disc; 802, slot; 803, entrance and exit; 804, positioning slot; 805, small air baffle; 806, round hole; 807, large air baffle; 808, lug; 809, blade; 901, support sleeve; 902, protective sleeve. DETAILED DESCRIPTION

[0036] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0037] like Figures 1 to 6As shown, the decomposition device of the air baffle of the turbine rotor 800 of this embodiment is used to separate the air baffle on the rotor 800 from the wheel disc 801, including a base 100, a rotating assembly 200, a fixing assembly 300 and a prying mechanism 500. The base 100 is fixedly connected to a central shaft 400 so that the wheel disc 801 is coaxially assembled with the central shaft 400 and fixedly connected to the base 100. The rotating assembly 200 is detachably connected to the central shaft 400. On the rod 400, the fixing assembly 300 is arranged on the rotating assembly 200 for fixing the small air baffle 805, and the prying mechanism 500 uses the lever principle to move the lug 808 of the large air baffle 807 out of the positioning groove 804. By rotating the rotating assembly 200 to rotate the small air baffle 805 connected to the fixing assembly 300 to the entrance and exit 803 on the wheel disc 801, the small air baffle 805 is pulled out of the entrance and exit 803 and separated from the wheel disc 801.

[0038] In this embodiment, fixing grooves 101 for fixing the base 100 on the operating table are respectively opened on both sides of the base 100. The fixing grooves 101 can be U-shaped grooves or circular grooves, and their specific shapes are not limited. The central axis 400 is fixed on the base 100 and is coaxial with the base 100. The central axis 400 is provided on the one hand to limit the wheel disc 801 to prevent the wheel disc 801 from axial deviation, and at the same time fix the wheel disc 801 to the base 100. In order to facilitate disassembly and installation, the wheel disc 801 can be connected to the base 100 by bolts when the wheel disc 801 is fixed to the base 100; on the other hand, it provides a rotation center axis for the setting of the rotating assembly 200, so that the rotating assembly 200 is coaxial with the wheel disc 801, so that the fixed assembly 300 provided on the rotating assembly 200 can also rotate with the central axis 400 as the axis, which facilitates the fixed assembly 300 to connect the small air baffle 805 and drive the small air baffle 805 to rotate circumferentially around the wheel disc 801. Specifically, the prying mechanism 500 consists of two sections: a longer cylindrical section that serves as the force-applying portion 205 for applying force, and a screwdriver section disposed at the end of the cylindrical section. The screwdriver section has a curved hook at its front end, the tip of which is used to pry the lug 808 on the large air baffle 807. The protruding hook section, when in use, abuts against the wheel disc 801, serving as a fulcrum for prying. In this embodiment, to protect the wheel disc 801 from damage by the prying mechanism 500, a protective gasket 600 is also provided at the support between the prying mechanism 500 and the wheel disc 801 to protect the wheel disc 801.

[0039] During the specific operation, the wheel disc 801 of the rotor 800 is first fixed to the base 100. At this time, the rotor 800 passes through the central shaft 400 and is coaxially arranged with the central shaft 400. Then, the prying mechanism 500 is used to pry the lug 808 of the large air baffle 807 out of the positioning groove 804 with the surface of the rotor 800 as the support point, and the lug 808 is bent to a position that avoids the air baffle's path along the slot 802, so that the large air baffle 807 can rotate circumferentially around the wheel disc 801. Then, the fixing component 300 is used to fix it with the small air baffle 805. At this time, the rotating component 200 rotatably connected to the central shaft 400 is rotated, thereby driving the fixing component 3 00 rotates circumferentially around the central axis 400, so that the small air baffle 805 and the large air baffle 807 rotate circumferentially around the wheel disc 801 at the same time. When the small air baffle 805 rotates to the entrance and exit 803 on the wheel disc 801, it can be separated one by one by the entrance and exit 803 of the wheel disc 801, and then the small air baffle 805 is removed. After the small air baffle 805 is separated from the wheel disc 801, the blade 809 connected to the small air baffle 805 is separated from the support of the small air baffle 805 and sinks. After more small air baffles 805 are separated from the wheel disc 801, the slot 802 on the rotating disk is exposed, and finally the large air baffle 807 is separated along the slot 802. The decomposition device of the air baffle of the turbine rotor 800 realizes the circumferential rotation of the entire circle of air baffles, so that the small air baffles 805 can be rotated to the inlet and outlet 803 for separation and the large air baffles 807 can be non-destructively decomposed, thereby reducing the risk of damage to the rotor 800.

[0040] Reference Figures 8 to 10 The rotating assembly 200 includes a rotating disc 201 rotatably connected and coaxially arranged with the central shaft 400, a plurality of cantilevers 202 fixed to the rotating disc 201, and a force-applying portion 205 detachably connected to the rotating disc 201. In this embodiment, the rotating disc 201 and the cantilevers 202 are integrally formed. There are four cantilevers 202, evenly spaced along the circumference of the rotating disc 201. The ends of the cantilevers 202 are used to mount the fixing assembly 300. The connection between the force-applying portion 205 and the rotating disc 201 can be configured as a screw, in which case the force-applying portion 205 is threadedly connected to the rotating disc 201. Alternatively, the force-applying portion 205 can be welded to the rotating disc 201. The provision of multiple cantilevers 202 allows the device to be equipped with multiple fixing assemblies 300 simultaneously, allowing them to be connected to multiple small air baffles 805 during use. This provides multiple force-applying points when the small air baffles 805 rotate, thereby improving the stability of the small air baffles 805 during rotation. The arrangement of the force applying portion 205 facilitates the rotation of the turntable 201 .

[0041] Furthermore, the free end of the cantilever 202 is provided with a first sliding groove 203 with an opening facing the base 100, and the fixing assembly 300 is arranged in the first sliding groove 203. The fixing assembly 300 includes a fixing screw 301, a slider 302, a positioning pin 304 and a limit screw 305. The fixing screw 301 passes through the cantilever 202 and extends into the first sliding groove 203 and is then threadedly connected to the slider 302. A second sliding groove 303 is provided on the slider 302. The positioning pin 304 is slidably connected to the slider 302 through the second sliding groove 303. The limit screw 305 passes through the slider 302 and abuts against the positioning pin 304. The positioning pin 304 extends out from one side of the slider 302 and is connected to the small air baffle 805.

[0042] In this embodiment, the fixing screw 301 is a knurled high-head screw, and the limit screw 305 is a knurled cylindrical-head locking screw. During installation, the fixing screw 301 is first inserted into the first sliding slot 203 on the cantilever 202 and threadedly connected to the slider 302 slidably disposed in the first sliding slot 203, thereby slidably connecting the slider 302 to the cantilever 202. The slider 302 defines a second sliding slot 303. One end of a positioning pin 304 extends into the second sliding slot 303 and is secured by the limit screw 305. The other end of the positioning pin 304 extends out of the slider 302 and connects to the small air baffle 805. Through the above-mentioned arrangement, the height of the slider 302 can be adjusted by the fixing screw 301, so that the positioning pin 304 is conveniently inserted into the small hole on the small air baffle 805. For the movement of the slider 302, the slider 302 is connected to the fixing screw 301 at one end, and a plurality of threaded holes connected to the fixing screw 301 are opened along the length direction of the slider 302, thereby realizing multiple position adjustments of the slider 302 along the first sliding groove 203; for the movement of the positioning pin 304, the positioning pin 304 is moved to the appropriate position in the second sliding groove 303 and then the positioning pin 304 is locked on the slider 302 using the limit screw 305. The first sliding groove 203 and the second sliding groove 303 are provided at the same time to increase the movable margin of the slider 302 and the positioning pin 304, so that when the positioning pin 304 is fixed to the circular hole 806 of the air baffle on the rotor 800, the problem of difficulty in matching the positioning pin 304 with the circular hole 806 on the small air baffle 805 due to problems such as tooling manufacturing errors and target component position errors can be overcome, thereby ensuring that the positioning pin 304 and the small air baffle 805 are fixed in place.

[0043] Furthermore, the second sliding slot 303 includes a flange slot 306 and a web slot 307 communicating with the flange slot 306. The positioning pin 304 includes a flange portion 308 and a web portion 309 connected to the flange portion 308. The flange portion 308 is embedded in the flange slot 306, and the web portion 309 is embedded in the web slot 307. The end of the web portion 309 facing away from the flange portion 308 is connected to the small air baffle 805. The cooperation between the flange slot 306 and the flange portion 308, and the cooperation between the web slot 307 and the web portion 309, prevents the positioning pin 304 from falling out of the second sliding slot 303.

[0044] Furthermore, the cantilever 202 is provided with an elongated hole 204 that communicates with the first sliding slot 203. The length of the elongated hole 204 coincides with the length of the first sliding slot 203, which is perpendicular to the length of the flange slot 306. In this embodiment, the provision of the elongated hole 204 facilitates the fixing bolt to directly drive the slider 302 to move, and then lock and secure the slider 302. The length of the first sliding slot 203 being perpendicular to the length of the flange slot 306 allows a certain amount of planar margin of motion for the end of the locating pin 304 connected to the small air baffle 805. Specifically, the first sliding slot 203 is arranged along the width of the cantilever 202, while the second sliding slot 303 is arranged along the length of the cantilever 202.

[0045] Reference Figure 7 The central axis 400 is composed of a bottom column 401, a first support column 402, a second support column 403 and a threaded column 404, which are arranged in sequence from the base 100 to the turntable 201 and have decreasing radii. The bottom column 401 is fixedly connected to the base 100, and the wheel 801 is sleeved on the first support column 402. The step formed by the first support column 402 and the second support column 403 is used to support the turntable 201. A nut 406 is connected to the threaded column 404, and the nut 406 abuts against the turntable 201. In this embodiment, the bottom column 401 is fixedly connected to the base 100 by screws. The first support column 402 is used to cooperate with the rotor 800 and is used for centering with the hole axis of the rotor 800. The turntable 201 is sleeved on the second support column 403. The turntable 201 is set on the step formed at the intersection of the first support column 402 and the second support column 403. The last threaded section fixes the turntable 201 axially on the central shaft 400 through the nut 406.

[0046] Furthermore, a bushing 405 is provided between the second support column 403 and the turntable 201. The end surface of the first end of the bushing 405 abuts the nut 406, and the second end of the bushing 405 abuts the turntable 201. In this embodiment, the provision of the bushing 405 protects the turntable 201 by preventing friction between the turntable 201 and the second support column 403, and by preventing friction between the nut 406 and the turntable 201.

[0047] Furthermore, a support ring 700 is provided between the base 100 and the wheel disc 801 to support the wheel disc 801. The support ring 700 is coaxially arranged with the central shaft 400. The provision of the support ring 700 provides a flat support surface for the wheel disc 801 during installation, allowing the rotor 800 to be stably fixed to the base 100.

[0048] Furthermore, the decomposition device of the air baffle of the turbine rotor 800 also includes a protective gasket 600, which is fitted with the wheel disc 801 and is used to provide a support point for the prying mechanism 500. Specifically, the protective gasket 600 is folded and bent into the shape of the inner hub wall of the disc, and is fitted and placed on the wheel disc 801 to protect the wheel disc 801 from being damaged by bumps. The prying mechanism 500 then uses the protective gasket 600 as a support to pry up the lug 808 on the large air baffle 807 that is stuck in the positioning groove 804, and bends the lug 808 to a position that avoids the air baffle's route along the slot 802.

[0049] like Figure 2 As shown, another assembly method for the decomposition device of the air baffle of a turbine rotor 800 is also disclosed. In the case of multi-stage rotors 800 of the same model and with the same function, these rotors 800 often adopt similar structures and some key dimensions. When a rotor 800 of similar structure needs to have its air baffles disassembled, the bushing 405 and support ring 700 can be adjusted to position the rotor 800 on the air baffle decomposition device and adjust the distance between the turntable 201 and the rotor 800, thereby achieving stable support for the rotor 800. Specifically, by replacing the support ring 700 with a support sleeve 901 and a protective sleeve 902 and assembling the bushing 405 upside down, the air baffle of another stage of the rotor 800 can be disassembled. The protective sleeve 902 is used according to the properties of the mating surface between the target component and the base 100. If the mating surface has a coating or other wear-prone properties, the protective sleeve 902 and support sleeve 901 can be used together to support the target component in a protective state.

[0050] The present invention also discloses a method for disassembling an air baffle of a turbine rotor 800, wherein the air baffle on the rotor 800 is separated from the wheel disc 801 by using the air baffle disassembly device, and the method comprises the following steps:

[0051] S100: Place the rotor 800 on the support ring 700 and insert the anti-rotation pin through the base 100 into the wheel disc 801;

[0052] In step S100 , the rotor 800 is stably fixed on the base 100 with the support of the support ring 700 , and the anti-rotation pin passes through the base 100 and is connected to the wheel 801 , thereby preventing the wheel 801 from rotating when the small air baffle 805 is subsequently rotated.

[0053] S200: Fit the protective gasket 600 to the wheel disc 801, and use the prying mechanism 500 to use the protective gasket 600 as a support surface to move the lug 808 of the large air baffle 807 out of the positioning groove 804 on the wheel disc 801, and bend the lug 808 to a position that avoids the path of the small air baffle 805 along the slot 802;

[0054] In step S200, the protective gasket 600 is placed against the wheel disc 801, and the prying mechanism 500 is then used to pry the lug 808 on the large air baffle 807 using the protective gasket 600 as a support, causing the lug 808 to bend to a position that avoids the path of the slot in the wheel disc 801. With this operation, the small air baffle 805 is freed from the restraint of the lug 808 on the large air baffle and can rotate along the axial direction of the wheel disc 801 under the action of an external force.

[0055] S300: Adjust the position of the positioning pin 304 by moving the slider 302 and the positioning pin 304 so that the positioning pin 304 fits into the circular hole 806 on the small air baffle 805;

[0056] For step S300, the slider 302 and the positioning pin 304 are moved in the first sliding groove 203 and the second sliding groove 303 respectively, so that the position of the positioning pin 304 is moved to a position that matches the circular hole 806 of the small air baffle 805 below the positioning pin 304, and then the positioning pin 304 is extended into the circular hole 806, and the positioning pin 304 is fixed by tightening the fixing screw 301 and the limit screw 305.

[0057] S400: The rotating disk 201 is rotated by the force applying portion 205, and the positioning pins 304 drive the entire circle of small air baffles 805 to rotate along the circumference of the rotating disk 201, so that the small air baffles 805 rotate to the inlet and outlet 803, thereby disassembling the small air baffles 805;

[0058] For step S400, the turntable 201 is rotated by manually pushing the force-applying part 205, so that the cantilever 202 drives the positioning pin 304 to rotate accordingly, and then drives the entire circle of small air baffles 805 to rotate circumferentially along the turntable 201 through the positioning pin 304. When the small air baffle 805 not connected to the positioning pin 304 is rotated to the entrance and exit 803 on the wheel disc 801, the small air baffle 805 can be taken out through the entrance and exit 803 to separate the small air baffle 805 from the wheel disc 801; when the small air baffle 805 connected to the positioning pin 304 is rotated to the entrance and exit 803, the circular hole 806 on the small air baffle 805 with the positioning pin 304 is first taken out, and then the small air baffle 805 is separated along the entrance and exit 803.

[0059] S500 : When the number of the small air baffles 805 separated from the wheel disc 801 reaches a certain amount, the large air baffles 807 are separated along the direction of the slots 802 of the turntable 201 .

[0060] With respect to step S500, after the small air baffle 805 is separated, the blade 809 at the corresponding position breaks away from the support of the small air baffle 805 and sinks; when more small air baffles 805 are separated, the number of sinking blades 809 also increases accordingly, so that the amplitude of the sinking of the blade 809 also increases, causing the tenon of the sunken blade 809 to fall off from the large air baffle 807, and because the small air baffle 805 has been separated a certain number of times, the large air baffle will not be constrained by the circumferential direction of the small air baffle 805, and then the large air baffle 807 is separated along the direction of the slot 802 of the turntable 201 to achieve the separation of the large air baffle 807.

[0061] The air baffles are separated by the above method, so that the small air baffle 805 can be rotated to the entrance and exit 803 for separation and the large air baffle 807 can be non-destructively decomposed; the adaptability of the tool for decomposing the large air baffle 807 is improved, and the risk of damage to the rotor 800 is reduced.

[0062] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A method for disassembling a turbine rotor air baffle, wherein the air baffle on a rotor (800) is separated from a wheel disc (801) by using a disassembling device for the turbine rotor air baffle, characterized in that: The decomposition device of a turbine rotor air baffle comprises a base (100), a rotating assembly (200), a fixing assembly (300) and a prying mechanism (500). The base (100) is fixedly connected to a central shaft (400) so that the wheel disc (801) and the central shaft (400) are coaxially assembled and fixedly connected to the base (100). The rotating assembly (200) is detachably rotatably connected to the central shaft (400). The fixing assembly (300) is arranged on the rotating assembly (200) and is used to fix a small air baffle (805). The prying mechanism (500) uses a lever principle to move a large air baffle (801) The lug (808) of the fixed assembly (300) is removed from the positioning groove (804), and the rotating assembly (200) is rotated to rotate the small air baffle (805) connected to the fixed assembly (300) to the inlet and outlet (803) on the wheel disc (801), and then the small air baffle (805) is pulled out from the inlet and outlet (803) and separated from the wheel disc (801). The rotating assembly (200) includes a rotating disc (201) rotatably connected to the central shaft (400) and coaxially arranged, a plurality of cantilevers (202) fixed to the rotating disc (201), and a force-applying portion (205) detachably connected to the rotating disc (201); The method for disassembling the turbine rotor air baffle comprises the following steps: S100: placing the rotor (800) on the support ring (700), and inserting the anti-rotation pin through the base (100) into the wheel disc (801); S200: Fit the protective gasket (600) to the wheel disc (801), and use the prying mechanism (500) to remove the lug (808) of the large air baffle (807) from the positioning groove (804) on the wheel disc (801) with the protective gasket (600) as the support surface, and bend the lug (808) to a position that avoids the path of the small air baffle (805) along the slot (802); S300: Adjust the position of the positioning pin (304) by moving the slider (302) and the positioning pin (304) so ​​that the positioning pin (304) is matched with the circular hole (806) on the small air baffle (805); S400: The rotating disk (201) is rotated by the force applying portion (205), and the positioning pin (304) drives the entire circle of small air baffles (805) to rotate along the circumference of the rotating disk (201), so that the small air baffles (805) are rotated to the inlet and outlet (803), thereby realizing the decomposition of the small air baffles (805); S500: After the small air baffles (805) are separated, the blades (809) at the corresponding positions are separated from the support of the small air baffles (805) and sink; when more small air baffles (805) are separated, the number of sinking blades (809) also increases accordingly, so that the amplitude of the sinking of the blades (809) also increases, so that the tenons of the sunken blades (809) and the large air baffles (807) fall off, and then the large air baffles (807) are separated along the direction of the slots (802) of the turntable (201).

2. The method for disassembling a turbine rotor air baffle according to claim 1, characterized in that: The free end of the cantilever (202) is provided with a first sliding groove (203) with an opening direction toward the base (100), and the fixing assembly (300) is arranged in the first sliding groove (203). The fixing assembly (300) includes a fixing screw (301), a slider (302), a positioning pin (304) and a limit screw (305). The fixing screw (301) passes through the cantilever (202) and extends into the first sliding groove (203) to be threadedly connected to the slider (302). The slider (302) is provided with a second sliding groove (303). The positioning pin (304) is slidably connected to the slider (302) through the second sliding groove (303). The limit screw (305) passes through the slider (302) and abuts against the positioning pin (304). One end of the positioning pin (304) extends out of the slider (302) and is connected to the small air baffle (805).

3. The method for disassembling a turbine rotor air baffle according to claim 2, characterized in that: The second sliding groove (303) includes a flange groove (306) and a belly groove (307) connected to the flange groove (306); the positioning pin (304) includes a flange portion (308) and a belly portion (309) connected to the flange portion (308); the flange portion (308) is embedded in the flange groove (306); the belly portion (309) is embedded in the belly groove (307); and the end of the belly portion (309) facing away from the flange portion (308) is connected to the small air baffle (805).

4. The method for disassembling a turbine rotor air baffle according to claim 3, characterized in that: The cantilever (202) is provided with a long hole (204) connected to the first sliding groove (203), the length direction of the long hole (204) is consistent with the length direction of the flange groove (306), and the length direction of the first sliding groove (203) is perpendicular to the length direction of the flange groove (306).

5. The method for disassembling a turbine rotor air baffle according to claim 1, characterized in that: The central shaft (400) comprises a bottom column (401), a first support column (402), a second support column (403) and a threaded column (404) which are arranged in sequence from the base (100) to the turntable (201) and whose radial dimensions decrease in sequence. The bottom column (401) is fixedly connected to the base (100). The radial dimension of the center hole of the wheel disc (801) matches the outer diameter of the first support column (402), and the wheel disc (801) is sleeved on the first support column (402). A step formed between the first support column (402) and the second support column (403) is used to support the turntable (201). A nut (406) is connected to the threaded column (404), and the nut (406) abuts against the turntable (201).

6. The method for disassembling a turbine rotor air baffle according to claim 5, characterized in that: A bushing (405) is provided between the second support column (403) and the turntable (201), the end surface of the first end of the bushing (405) abuts against the nut (406), and the second end of the bushing (405) abuts against the turntable (201).

7. The method for disassembling a turbine rotor air baffle according to claim 1, characterized in that: A support ring (700) for supporting the wheel disc (801) is further provided between the base (100) and the wheel disc (801), and the support ring (700) is coaxially arranged with the central shaft (400).

8. The method for disassembling a turbine rotor air baffle according to claim 1, characterized in that: The decomposition device of the air baffle of the turbine rotor (800) further comprises a protective gasket (600), wherein the protective gasket (600) is fitted with the wheel disc (801) and is used to provide a support point for the prying mechanism (500).

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