A turbine blade machining device

Abstract

The present application relates to the field of steam turbine blade processing technology, and particularly relates to a steam turbine blade processing device, which comprises a spherical shell deflection positioner, clamping jaws for clamping steam turbine blades are uniformly arranged on the spherical shell deflection positioner, the spherical shell deflection positioner drives the clamping jaws to rotate forward and backward and to tilt left and right, and a lubricating module is arranged in the spherical shell deflection positioner; the spherical shell deflection positioner comprises a hollow inner spherical shell and an outer spherical shell which is sleeved on the inner spherical shell, the centers of the two spherical shells coincide, the shell body of the inner spherical shell is embedded with a plurality of supporting balls which penetrate the inner and outer walls of the shell body, the supporting balls abut against the inner wall of the outer spherical shell, and symmetrical round holes are formed in the left and right sides of the outer spherical shell; the spherical shell deflection positioner is provided with steam turbine blade milling equipment, quenching equipment and polishing equipment; the steam turbine blade is driven to rotate forward and backward and to tilt left and right, the degree of freedom is high, and the movement range of the steam turbine blade is large; the device is effectively protected as a whole, and the mechanical safety is high.

Description

Technical Field

[0001] This invention relates to the field of turbine blade processing technology, and more specifically to a turbine blade processing apparatus. Background Technology

[0002] Steam turbines are essential equipment widely used in my country's power industry. Blades are one of the core components of a steam turbine. Steam performs work as it flows through the moving and stationary blades, ultimately generating electricity through a series of conversion processes. As the demand for steam turbines increases, the demand for steam turbine blades also gradually increases.

[0003] Therefore, it is essential to continuously develop related processing equipment and improve its processing efficiency, processing accuracy, and product quality. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a novel turbine blade processing device.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A turbine blade processing device includes a spherical shell deflection locator, on which grippers for holding turbine blades are evenly arranged. The spherical shell deflection locator drives the grippers to rotate back and forth and tilt left and right. A lubrication module is provided inside the spherical shell deflection locator.

[0007] The spherical shell deflection locator includes a hollow inner spherical shell and an outer spherical shell that is wrapped around it, with the centers of the two spheres coinciding. The inner spherical shell has several supporting spheres that penetrate its inner and outer walls. The supporting spheres press against the inner wall of the outer spherical shell. The outer spherical shell has symmetrical circular holes on its left and right sides.

[0008] Next to the spherical shell deflector is a turbine blade milling machine, a turbine blade quenching machine, and a turbine blade grinding machine.

[0009] Furthermore, two symmetrical delta push-pull rotation mechanisms are provided between the inner and outer spherical shells. Each delta push-pull rotation mechanism includes a rotating rod disposed in the outermost bearing seat on both sides. The other end of the rotating rod is connected to the inner spherical shell. A triangular prism is provided in the middle section of the rotating rod. Each plane on the triangular prism is provided with a linear guide slider module. A connecting rod is hinged to the movable end of the linear guide slider module. The other end of the connecting rod is hinged to the outer spherical shell.

[0010] Furthermore, the lubrication module includes oil injection capillaries arranged in a divergent pattern within the inner spherical shell. The outlet of each oil injection capillary is aligned with a support ball located within the inner spherical shell. All oil injection capillaries converge into a main oil pipe, which is connected to an external oil supply line via a rotary joint.

[0011] Furthermore, the edge of the circular hole is hinged to the connecting rod.

[0012] Furthermore, the number of grippers is 4 to 12, which includes a rotatable base. The base is provided with 2 to 4 rigid grippers that move synchronously towards or away from each other. The distance from the base to the circular holes on its left and right sides is equal.

[0013] Furthermore, the left and right tilting angle of the outer spherical shell is -40° to 40°.

[0014] Furthermore, the middle section of the connecting rod is provided with an overload protection mechanism. When the thrust or tension it receives exceeds the limit value, the total length of the overload protection mechanism will become shorter or longer.

[0015] Furthermore, the overload protection mechanism includes two connecting discs connected to the connecting rod, with an inner and outer rod assembly between the two connecting discs. The inner and outer rod assembly is provided with an insertable protective pin, and the two connecting discs are also connected by a spring disposed around the inner and outer rod assembly.

[0016] Furthermore, an oil brush is provided at the end of the oil spray capillary tube that is close to the supporting ball, and the bristles of the oil brush are in contact with the supporting ball.

[0017] Furthermore, the grippers are used to secure the blade roots of the turbine blades.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The turbine blade processing device of this invention has a reasonable structure, high safety, and low failure rate. It achieves the forward and backward rotation and left and right tilting motion of the turbine blades through a spherical shell deflection positioner, providing a high degree of freedom and a large range of motion for the turbine blades. This effectively improves processing convenience, production efficiency, processing accuracy, and product quality.

[0020] 2. The turbine blade processing device of the present invention is equipped with an overload protection mechanism. When the thrust or tension it receives exceeds the limit value, its total length will become shorter or longer, thus protecting the connecting rod and the entire device. The spring provides a certain buffering effect. During subsequent maintenance, only a new protective pin needs to be replaced.

[0021] 3. The turbine blade processing device of the present invention greatly reduces the friction between the inner spherical shell 1a and the outer spherical shell 1b by setting a lubrication module, making the mechanism move flexibly, increasing the utilization rate of lubricating oil, and saving resources. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 for Figure 1 Enlarged view of point X in the middle;

[0024] Figure 3 This is a front view schematic diagram of the present invention;

[0025] Figure 4 for Figure 1 Schematic diagram of the cross section along the AA direction;

[0026] Figure 5 for Figure 4 Enlarged view of point Y in the middle;

[0027] Figure 6 This is a schematic diagram of the overload protection mechanism in this invention.

[0028] In the diagram: 1. Spherical shell deflector; 1a. Inner spherical shell; 1a-1. Supporting ball; 1b. Outer spherical shell; 1b-1. Circular hole; 2. Gripper; 2a. Base; 2b. Rigid jaw; 3. Delta push-pull rotation mechanism; 3a. Rotating rod; 3b. Triangular prism; 3c. Linear guide rail slider module; 3d. Connecting rod; 3d-1. Overload protection mechanism; 3d-101. Connecting plate; 3d-102. Inner and outer rod assembly; 3d-103. Protective pin; 3d-104. Spring; 4. Lubrication module; 4a. Oil injection capillary. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solutions of the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0030] like Figures 1-6As shown, a turbine blade processing device includes a spherical shell deflection locator 1. A turbine blade milling machine, a turbine blade quenching machine, a turbine blade grinding machine, and related auxiliary equipment are arranged next to the spherical shell deflection locator 1 to sequentially process the turbine blades. The spherical shell deflection locator 1 is evenly equipped with grippers 2 for holding the turbine blades. Specifically, the grippers 2 are used to fix the blade root of the turbine blade. The spherical shell deflection locator 1 drives the grippers 2 to rotate back and forth and tilt left and right, cooperating with the adjacent processing device to process the turbine blades. A lubrication module 4 is provided inside the spherical shell deflection locator 1 to ensure smooth movement and extend the service life of the device.

[0031] The spherical shell deflector 1 includes a hollow inner spherical shell 1a and an outer spherical shell 1b, with their centers overlapping. The left and right tilting angle of the outer spherical shell 1b is -40° to 40°. The inner spherical shell 1a has several supporting balls 1a-1 that penetrate its inner and outer walls. The supporting balls 1a-1 press against the inner wall of the outer spherical shell 1b, which greatly reduces the friction between the inner spherical shell 1a and the outer spherical shell 1b. The outer spherical shell 1b has symmetrical circular holes 1b-1 on its left and right sides. The purpose of these holes is to connect the shaft that drives the inner spherical shell 1a to rotate and to provide deflection space for the outer spherical shell 1b.

[0032] Two symmetrical delta push-pull rotation mechanisms 3 are provided between the inner spherical shell 1a and the outer spherical shell 1b. The delta push-pull rotation mechanism 3 includes a rotating rod 3a set in the outermost bearing seat on both sides. The other end of the rotating rod 3a is connected to the inner spherical shell 1a. A triangular prism 3b is provided in the middle section of the rotating rod 3a. Each plane on the triangular prism 3b is provided with a linear guide slider module 3c. A connecting rod 3d is hinged to the movable end of the linear guide slider module 3c. The other end of the connecting rod 3d is hinged to the outer spherical shell 1b. Specifically, the edge of the circular hole 1b-1 is hinged to the connecting rod 3d. Each linear guide slider module 3c has an independent power drive, which drives the outer spherical shell 1b to tilt and deflect relative to the inner spherical shell 1a, thereby realizing the control of the deflection of the turbine blades.

[0033] The lubrication module 4 includes oil spray capillaries 4a arranged in a divergent pattern within the inner spherical shell 1a. The outlet of each oil spray capillary 4a is aligned with a support ball 1a-1 located within the inner spherical shell 1a. The oil spray capillaries 4a converge into a main oil pipe 4b, which is connected to an external oil supply line via a rotary joint 4c. The rotary joint is a pipe connection device that allows the connected pipes to rotate relative to each other. An oil brush is provided at the end of the oil spray capillary 4a closest to the support ball 1a-1. The bristles of the oil brush are in contact with the support ball 1a-1. The oil brush minimizes lubricant leakage and saves resources.

[0034] The number of grippers 2 is 4 to 12, including a rotatable base 2a, on which 2 to 4 rigid grippers 2b are provided to move synchronously towards or away from each other, and the distance from the base 2a to the circular holes 1b-1 on its left and right sides is equal.

[0035] The middle section of the connecting rod 3d is equipped with an overload protection mechanism 3d-1. When the thrust or tension it receives exceeds the limit value, the total length of the overload protection mechanism 3d-1 will shorten or lengthen. The overload protection mechanism 3d-1 includes two connecting discs 3d-101 connected to the connecting rod 3d. An inner and outer rod assembly 3d-102 is provided between the two connecting discs 3d-101. An insertable protective pin 3d-103 is provided on the inner and outer rod assembly 3d-102. The hardness is lower than that of the inner and outer rod assembly 3d-102. The two connecting discs 3d-101 are also connected by springs 3d-104 set around the inner and outer rod assembly 3d-102. When the overload protection mechanism 3d-1 is subjected to a thrust or tension exceeding the limit value, the protective pin 3d-103 is broken, thus protecting the connecting rod 3d and the entire device. The spring 3d-104 provides a certain degree of cushioning. During subsequent maintenance, only a new protective pin 3d-103 needs to be replaced.

[0036] 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. For those skilled in the art, various changes, modifications or additions made without departing from the concept of the present invention should all fall within the scope of protection of the present invention.

Claims

1. A turbine blade processing device, characterized in that: Includes a spherical shell deflection locator (1), on which grippers (2) for holding turbine blades are evenly arranged. The spherical shell deflection locator (1) drives the grippers (2) to rotate back and forth and tilt left and right. A lubrication module (4) is provided inside the spherical shell deflection locator (1). The spherical shell deflection locator (1) includes a hollow inner spherical shell (1a) and an outer spherical shell (1b) that is wrapped around it. The centers of the two spheres coincide. The inner spherical shell (1a) has a number of supporting spheres (1a-1) that penetrate its inner and outer walls. The supporting spheres (1a-1) abut against the inner wall of the outer spherical shell (1b). The outer spherical shell (1b) has symmetrical circular holes (1b-1) on its left and right sides. Next to the spherical shell deflector (1), there are turbine blade milling equipment, turbine blade quenching equipment and turbine blade grinding equipment.

2. The turbine blade processing device according to claim 1, characterized in that: Two symmetrical delta push-pull rotation mechanisms (3) are provided between the inner spherical shell (1a) and the outer spherical shell (1b). Each delta push-pull rotation mechanism (3) includes a rotating rod (3a) located in the outermost bearing seat on both sides. The other end of the rotating rod (3a) is connected to the inner spherical shell (1a). A triangular prism (3b) is provided in the middle section of the rotating rod (3a). Each plane on the triangular prism (3b) is provided with a linear guide slider module (3c). A connecting rod (3d) is hinged to the movable end of the linear guide slider module (3c). The other end of the connecting rod (3d) is hinged to the outer spherical shell (1b).

3. The turbine blade processing device according to claim 1, characterized in that: The lubrication module (4) includes oil injection capillaries (4a) arranged in a divergent manner inside the inner spherical shell (1a). The outlet of each oil injection capillary (4a) is aligned with a support ball (1a-1) located inside the inner spherical shell (1a). All oil injection capillaries (4a) converge into a main oil pipe (4b), which is connected to an external oil supply line through a rotary joint (4c).

4. The turbine blade processing device according to claim 2, characterized in that: The edge of the circular hole (1b-1) is hinged to the connecting rod (3d).

5. The turbine blade processing device according to claim 1, characterized in that: The number of grippers (2) is 4 to 12, including a rotatable base (2a), on which 2 to 4 rigid grippers (2b) are provided to move synchronously toward or away from each other, and the distance from the base (2a) to the circular holes (1b-1) on its left and right sides is equal.

6. The turbine blade processing device according to claim 1, characterized in that: The left and right tilting angle of the outer spherical shell (1b) is -40° to 40°.

7. The turbine blade processing device according to claim 2, characterized in that: The middle section of the connecting rod (3d) is provided with an overload protection mechanism (3d-1). When the thrust or tension it receives exceeds the limit value, the total length of the overload protection mechanism (3d-1) will become shorter or longer.

8. The turbine blade processing apparatus according to claim 7, characterized in that: The overload protection mechanism (3d-1) includes two connecting discs (3d-101) connected to the connecting rod (3d). An inner and outer rod assembly (3d-102) is provided between the two connecting discs (3d-101). An insertable protective pin (3d-103) is provided on the inner and outer rod assembly (3d-102). The two connecting discs (3d-101) are also connected by a spring (3d-104) provided on the periphery of the inner and outer rod assembly (3d-102).

9. A turbine blade processing device according to claim 3, characterized in that: An oil brush is provided at the end of the oil spray capillary tube (4a) that is close to the supporting ball (1a-1), and the bristles of the oil brush are in contact with the supporting ball (1a-1).

10. A turbine blade processing device according to claim 1, characterized in that: The gripper (2) is used to fix the blade root of the turbine blade.

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