A turbine blade sealing processing tool

Abstract

This invention discloses a turbine blade sealing processing fixture, including a processing table, a sealing device, a sealing seat, a docking device, a sealing plug, and an air pipe. The sealing plug is disposed in the docking device; the docking device is installed in the sealing seat; the sealing seat is disposed on the processing table; the lower end of the inner hole of the turbine blade body is installed on the docking device, and the upper end of the inner hole is provided with the sealing device; the sealing device is provided with an air inlet channel and an air outlet channel; the air pipe passes through the processing table and the sealing plug and communicates with the air inlet channel; the exhaust port of the exhaust channel faces the upper surface of the inner hole of the turbine blade body, so that the airflow blows the upper surface of the inner hole of the turbine blade body. This invention has a simple structure and is easy to operate. It can effectively prevent iron filings, small screws, and other foreign objects from entering the inner cavity and film gas flow holes of the blade, greatly improving the processing quality of gas turbine blades, increasing equipment efficiency, and significantly reducing costs.

Description

Technical Field

[0001] This invention relates to the field of turbine blade processing technology, and in particular to a turbine blade sealing processing fixture. Background Technology

[0002] Gas turbine blades have a complex internal structure and numerous film cooling pores. In recent years, the production of gas turbine blades has mainly adopted directional solidification technology. After the cast blanks pass inspection, the blades must be machined. During machining, it is crucial to prevent iron filings, spatter, and other foreign matter from entering the blade's internal cavity and film cooling pores, and also to prevent the machining fluid required during machining from flowing into the internal cavity or film cooling pores. This can significantly improve product quality and greatly reduce the significant potential hazards during gas turbine operation. Therefore, developing a tooling that prevents iron filings and spatter from entering the film cooling pores of the turbine blades without adversely affecting the machining process is of paramount importance. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and to propose a turbine blade sealing processing fixture.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention provides a turbine blade sealing processing fixture, including a processing table, a sealing device, a sealing seat, a connector, a sealing plug, and an air pipe; the sealing plug is disposed in the connector; the connector is installed in the sealing seat; the sealing seat is disposed on the processing table; the lower end of the inner hole of the turbine blade body is installed on the connector, and the upper end of the inner hole is provided with a sealing device; the sealing device is provided with an air inlet channel and an air outlet channel; the air pipe passes through the processing table and the sealing plug and communicates with the air inlet channel; the exhaust port of the exhaust channel faces the upper surface of the inner hole of the turbine blade body, so that the airflow blows the upper surface of the inner hole of the turbine blade body.

[0006] Furthermore, the sealing device has a crescent-shaped structure with an arc-shaped air intake channel inside and an exhaust channel communicating with the air intake channel on the side wall; multiple exhaust channels are provided, and the exhaust ports of the inclined exhaust channels blow against the upper surface of the inner hole of the turbine blade body.

[0007] Furthermore, the air inlet extends to the upper surface of the sealer and the opening is blocked by a plug; the air pipe is inserted into the upper end of the sealer, and the upper end of the sealer has air holes on its side.

[0008] Furthermore, the machining table is equipped with a positioning baffle and a feed seat; the locking screw passes through the feed seat and is fixed to the pressure block; the turbine blade body is positioned on the machining table through the docking device and the positioning baffle, and is radially clamped under the action of the locking screw.

[0009] Furthermore, a support is provided on the processing table; an electric push rod is provided at the upper end of the support, and a slidably adjustable horizontal plate is provided in the middle; a lower pressure plate is provided on the horizontal plate, and pressure rods symmetrically arranged at both ends of the lower pressure plate pass through guide holes provided on the horizontal plate, and under the power of the electric push rod, they press down on the upper surface of the turbine blade body.

[0010] Furthermore, the front end of the electric push rod is fixed to the upper surface of the lower pressure plate; a spring buffer is provided under the lower pressure plate; the spring buffer is centrally located between the lower pressure plate and the horizontal plate.

[0011] Furthermore, the support has an adjustment groove on its side; a support slide plate that is slidably connected to the side of the support is provided below the cross plate; and the cross plate is fixed in the adjustment groove by locking bolts.

[0012] Furthermore, the lower end of the bracket is provided with a protrusion, and the processing table is provided with a groove corresponding to the protrusion; the protrusion at the lower end of the bracket is connected to the groove of the processing table, the bracket can move on the processing table, and the bracket is fixed to the processing table by the upper pressure plate.

[0013] The plugging fixture of this invention has a simple structure and is easy to operate. It can effectively prevent iron filings, tiny screws and other waste from entering the inner cavity and film gas holes of the blade. It can also prevent the processing fluid required during processing from flowing into the inner cavity or film gas holes. It does not cause damage or contamination to any surface of the blade, greatly improves the processing quality of gas turbine blades, increases equipment efficiency and greatly reduces costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is an enlarged structural diagram of point H in the present invention.

[0016] Figure 3 This is an enlarged structural diagram of point G in the present invention.

[0017] Figure 4 This is an enlarged structural diagram of point M in the present invention.

[0018] The components include: processing table 1; upper pressure plate 2; positioning baffle 3; bracket 4; horizontal plate 5; spring buffer 6; electric push rod 7; lower pressure plate 8; pressure rod 9; sealing device 10; pressure block 11; feed seat 12; locking screw 13; sealing seat 14; docking device 15; sealing plug 16; air pipe 17; plug 18; locking bolt 41; adjusting groove 42; support slide plate 43; air inlet duct 101; exhaust duct 102; and air hole 171. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] like Figures 1 to 4 As shown, a turbine blade sealing processing fixture includes a processing table 1, a sealing device 10, a sealing seat 14, a connector 15, a sealing plug 16, and an air pipe 17. The sealing plug 16 is disposed in the connector 15. The connector 15 is installed in the sealing seat 14. The sealing seat 14 is disposed on the processing table 1. The lower end of the inner hole of the turbine blade body is installed on the connector 15, and the upper end of the inner hole is provided with the sealing device 10. The sealing device 10 is provided with an air inlet duct 101 and an exhaust duct 102. The air pipe 17 passes through the processing table 1 and the sealing plug 16 and is connected to the air inlet duct 101. The exhaust port of the exhaust channel 102 faces the upper surface of the inner hole of the turbine blade body, so that the airflow blows the upper surface of the inner hole of the turbine blade body. This changes the traditional sealing tooling that only blocks the inner hole of the turbine blade without dispersing the processing iron filings and debris. The present invention uses the ingenious combination structure of the sealing device 10, sealing seat 14, docking device 15 and sealing plug 16 to block the inner hole of the turbine blade. Moreover, the airflow sent from the air pipe 17 blows away the iron filings and splashes during processing. The combination of blocking and dispersing methods greatly improves the processing quality of the turbine blade.

[0021] As a preferred embodiment, such as Figure 2 and Figure 3 As shown, the sealing device 10 has a crescent-shaped structure, although a cylindrical structure can also be used. However, a crescent-shaped structure is preferred because it saves raw materials and facilitates processing. An arc-shaped air inlet duct 101 is provided internally, and an exhaust channel 102 communicating with the air inlet duct 101 is provided on the side wall. Multiple exhaust channels 102 are provided, and the exhaust ports of the inclined exhaust channels 102 blow against the upper surface of the inner hole of the turbine blade body. This structure is more effective at blowing away iron filings and splashes, resulting in higher efficiency. The sealing device 10 is preferably made of polyurethane material, which has better processing and sealing effects.

[0022] As a preferred embodiment, such as Figure 3 As shown, the air intake duct 101 extends to the upper surface of the sealer 10 and is blocked by a plug 18. The air intake duct 101 can be cleaned periodically by opening the plug 18, improving the quality of turbine blade processing and preventing blockages from affecting purging efficiency. Figure 4As shown, the air pipe 17 is inserted into the upper end side of the sealer 10 and has an air hole 171. Air enters through the air pipe 17, is transported from the air hole 171 to the air intake channel 101, and is blown out from the exhaust channel 102, which is inclined to the upper surface of the inner hole of the turbine blade body, to blow away the iron filings and splashes during the turbine blade processing.

[0023] As a preferred embodiment, such as Figure 1 As shown, the machining table 1 is equipped with a positioning baffle 3 and a feed seat 12; the locking screw 13 passes through the feed seat 12 and is fixed to the pressure block 11; the turbine blade body is positioned on the machining table 1 through the connector 15 and the positioning baffle 3, and is radially clamped under the action of the locking screw 13. The machining table 1 is equipped with a bracket 4; the upper end of the bracket 4 is equipped with an electric push rod 7, and the middle is equipped with a slidably adjustable horizontal plate 5; the horizontal plate 5 is equipped with a lower pressure plate 8, and the pressure rods 9 symmetrically arranged at both ends of the lower pressure plate 8 pass through the guide holes provided on the horizontal plate 5, pressing downwards against the upper surface of the turbine blade body under the power of the electric push rod 7. This fixture can clamp the turbine blade body radially and axially, achieving precise positioning and clamping, improving machining accuracy and quality.

[0024] In a preferred embodiment, the front end of the electric push rod 7 is fixed to the upper surface of the lower pressure plate 8; a spring buffer 6 is provided under the lower pressure plate 8; the spring buffer 6 is centrally located between the lower pressure plate 8 and the horizontal plate 5.

[0025] In a preferred embodiment, the support 4 has an adjustment groove 42 on its side; a support slide plate 43 is provided below the horizontal plate 5 and slidably connected to the side of the support 4; the horizontal plate 5 is fixed in the adjustment groove 42 by locking bolts 41. The lower end of the support 4 has a protrusion, and the processing table 1 has a corresponding groove; the protrusion at the lower end of the support 4 connects to the groove of the processing table 1, allowing the support 4 to move on the processing table 1, and the upper pressure plate 2 fixes the support 4 to the processing table 1. By moving the horizontal plate 5 up and down in the adjustment groove 42, turbine blades of different heights can be processed, resulting in greater adaptability and versatility. By connecting the protrusion at the lower end of the support 4 to the groove of the processing table 1, the support 4 can move horizontally on the processing table 1, enabling the processing of turbine blades of different specifications on the same processing table 1 using a single axial clamping device, improving equipment efficiency and significantly reducing costs.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A turbine blade plugging tooling, characterized by: The device includes a processing table, a sealing device, a sealing seat, a docking device, a sealing plug, and an air pipe. The sealing plug is disposed in the docking device. The docking device is installed in the sealing seat. The sealing seat is disposed on the processing table. The lower end of the inner hole of the turbine blade body is installed on the docking device, and the upper end of the inner hole is provided with a sealing device. The sealing device is provided with an air inlet channel and an air outlet channel. The air pipe passes through the processing table and the sealing plug and communicates with the air inlet channel. The exhaust port of the exhaust channel faces the upper surface of the inner hole of the turbine blade body, so that the airflow sweeps the upper surface of the inner hole of the turbine blade body. The sealing device has a crescent-shaped structure with an arc-shaped air intake channel inside and an exhaust channel connected to the air intake channel on the side wall; there are multiple exhaust channels, and the exhaust ports of the inclined exhaust channels blow against the upper surface of the inner hole of the turbine blade body. The machining table is equipped with a positioning baffle and a feed seat; the locking screw passes through the feed seat and is fixed to the pressure block; the turbine blade body is positioned on the machining table through the docking device and the positioning baffle, and is radially clamped under the action of the locking screw; A support is provided on the processing table; an electric push rod is provided at the upper end of the support, and a slidable and adjustable horizontal plate is provided in the middle; a lower pressure plate is provided on the horizontal plate, and pressure rods symmetrically arranged at both ends of the lower pressure plate pass through the guide holes provided on the horizontal plate. Under the power of the electric push rod, they press down on the upper surface of the turbine blade body. The front end of the electric push rod is fixed to the upper surface of the lower pressure plate; a spring buffer is provided under the lower pressure plate; the spring buffer is centrally located between the lower pressure plate and the horizontal plate. The side of the bracket is provided with an adjustment groove; a support slide plate is provided below the horizontal plate and is slidably connected to the side of the bracket; the horizontal plate is fixed in the adjustment groove by locking bolts.

2. The turbine blade sealing processing fixture according to claim 1, characterized in that: The air intake passage extends to the upper surface of the sealer, and the opening is blocked by a plug.

3. The turbine blade plugging processing tool according to claim 1, wherein: The air tube is inserted into the upper end of the sealer, and the upper end of the sealer has an air hole on its side.

4. The turbine blade plugging processing tool according to claim 1, wherein: The lower end of the bracket is provided with a protrusion, and the processing table is provided with a groove corresponding to the protrusion; the protrusion at the lower end of the bracket is connected to the groove of the processing table, the bracket can move on the processing table, and the bracket is fixed to the processing table by an upper pressure plate.

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