Portable steam turbine blade flaw detector

Abstract

The utility model relates to the technical field of steam turbine blades, in particular to a portable steam turbine blade flaw detector which comprises a supporting plate and an ultrasonic flaw detector body, the ultrasonic flaw detector body is arranged on one side of the supporting plate, and a flaw detector external ultrasonic probe is arranged at the lower end of the ultrasonic flaw detector body. A steam turbine blade outer hoop is arranged at the bottom end of the supporting plate, an adjusting mechanism is arranged on one side of the supporting plate, a first fixing plate is arranged in the adjusting mechanism, a first telescopic rod is arranged on one side of the first fixing plate, a first hinge assembly is arranged on the first telescopic rod, and a first connecting rod is arranged on one side of the first hinge assembly. A first guide wheel is arranged at one end of the first connecting rod, a second hinge assembly is arranged at the telescopic end of the first telescopic rod, a first supporting rod is arranged on one side of the second hinge assembly, a limiting mechanism is arranged on the other side of the supporting plate, a movable assembly is arranged in the limiting mechanism, and a movable rod is arranged on the movable assembly.

Description

Technical Field

[0001] This utility model relates to the field of steam turbine blade technology, specifically a portable steam turbine blade flaw detector. Background Technology

[0002] Turbine stationary blades operate in a high-temperature and high-pressure environment and are also subject to water vapor corrosion. The quality of each maintenance directly affects whether the turbine stationary blades can work normally next time. Conventional flaw detection methods include spraying flaw detection spray onto the turbine stationary blades and then manually inspecting them, scanning the turbine stationary blades back and forth with a handheld flaw detection instrument, and removing the turbine stationary blades and inspecting them with specialized flaw detection equipment.

[0003] In response, Chinese Patent Application Publication No. CN213633288U discloses a turbine blade flaw detection device, including a base plate, a flaw detector mounting frame structure, an ultrasonic flaw detector body, fixed wheels, a telescopic frame structure, rotating wheels, a fixed pipe, a telescopic rod, clamping bolts, an external ultrasonic probe for the flaw detector, a drive motor, a drive wheel, and an outer ring hoop for the turbine blade. The flaw detector mounting frame structure is installed on the upper part of the base plate; the ultrasonic flaw detector body is placed on the upper part of the base plate; the fixed wheels are respectively axled at the four outer corners of the base plate; and the telescopic frame structure is installed at the front and rear ends of the base plate. The beneficial effects of this utility model are: the L-shaped mounting frame, connecting plate, fixing bolts, ear plate, and fixing plate facilitate the removal of the ultrasonic flaw detector body by operators, thereby facilitating maintenance and repair of the ultrasonic flaw detector body and reducing maintenance costs.

[0004] However, existing portable turbine blade flaw detectors cannot adjust the position of the guide wheels according to the shape of the turbine blade outer ring hoop because the outer ring hoop of the turbine blade is an arc-shaped structure. This makes it impossible for the guide wheels to fit snugly against the outer side of the turbine blade outer ring hoop, thus affecting the flaw detection work.

[0005] Therefore, in order to solve the above problems, a portable turbine blade flaw detector is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a portable turbine blade flaw detector to solve the problem mentioned in the background art of the prior art. Because the outer ring of the turbine blade is an arc-shaped structure, and the fixed plate at the upper end of the existing device and the guide wheels at both ends are immovable, the existing device cannot adjust the position of the guide wheels according to the shape of the outer ring of the turbine blade, thus failing to make the guide wheels fit against the outer side of the outer ring of the turbine blade, thereby affecting the flaw detection work.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a portable turbine blade flaw detector, comprising: a support plate and an ultrasonic flaw detector body, wherein the ultrasonic flaw detector body is provided on one side of the support plate, and an external ultrasonic probe for the flaw detector is provided at the lower end of the ultrasonic flaw detector body, and an outer ring hoop for the turbine blade is provided at the bottom end of the support plate, an adjustment mechanism is provided on one side of the support plate, a first fixed plate is provided within the adjustment mechanism, a first telescopic rod is provided on one side of the first fixed plate, a first hinge assembly is provided on the first telescopic rod, a first connecting rod is provided on one side of the first hinge assembly, a first guide wheel is provided at one end of the first connecting rod, and a second hinge assembly is provided at the telescopic end of the first telescopic rod, a first support rod is provided on one side of the second hinge assembly, and a limiting mechanism is provided on the other side of the support plate, a movable component is provided within the limiting mechanism, a movable rod is provided on the movable component, and a second guide wheel is provided at one end of the movable rod.

[0008] Preferably, the limiting mechanism is provided with a second fixing plate, which is fixedly installed on one side of the support plate, and a second telescopic rod is fixedly installed on one side of the second fixing plate.

[0009] Preferably, a third hinge assembly is movably mounted on the second telescopic rod, a second connecting rod is movably mounted on one side of the third hinge assembly, and a through rod is movably mounted on one end of the second connecting rod.

[0010] Preferably, one end of the through rod is fixedly mounted on the movable rod, and a servo motor is provided on one side of the through rod. The servo motor is fixedly mounted on the through rod via a fixed rod, and a main drive wheel is rotatably mounted on the output end of the servo motor via a coupling. One side of the main drive wheel is rotatably connected to the second guide wheel, and a fourth hinge assembly is movably mounted on the telescopic end of the second telescopic rod. A second support rod is movably mounted on one side of the fourth hinge assembly, and one end of the second support rod is movably mounted on the second connecting rod.

[0011] Preferably, the first fixing plate is fixedly installed on the other side of the support plate, the bottom end of the first telescopic rod is fixedly installed on the first fixing plate, and the first hinge assembly is movably installed on the first telescopic rod.

[0012] Preferably, one end of the first connecting rod is movably mounted on the first hinge assembly, the first guide wheel is rotatably mounted on one end of the first connecting rod, and one side of the first guide wheel is in contact with the inner side of the outer ring of the turbine blade, the second hinge assembly is movably mounted on the telescopic end of the first telescopic rod, one end of the first support rod is movably mounted on the second hinge assembly, and the other end of the first support rod is movably mounted on the first connecting rod.

[0013] Preferably, one side of the movable component is fixedly mounted on the support plate, one end of the movable rod is movably mounted inside the movable component, the second guide wheel is rotatably mounted on one end of the movable rod, and one side of the second guide wheel is in contact with the outer side of the outer ring of the turbine blade.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By incorporating an adjustment mechanism, the position of the first guide wheel can be adjusted as needed. The first telescopic rod within the mechanism drives the second hinge assembly, which in turn drives the first support rods on both sides. The first support rods then drive the first connecting rod, which in turn provides limiting support for the first connecting rod. The first connecting rod then drives the first guide wheel to fit against the inner side of the outer ring of the turbine blade, thereby improving the practicality of the device.

[0016] 2. By setting a limiting mechanism, the second guide wheel can be kept in contact with the outer side of the turbine blade outer ring as needed. The second telescopic rod in the mechanism drives the fourth hinge assembly, which in turn drives the second support rod, which in turn drives the second connecting rod. During this process, the third hinge assembly can limit and support one end of the second connecting rod. The second connecting rod then drives the movable rod through the through rod. This process can be achieved by the movable assembly, which allows the movable rod to move. The movable rod then drives the second guide wheel to contact the outer side of the turbine blade outer ring. The servo motor is then started to drive the main drive wheel, which in turn drives the second guide wheel to rotate, thereby improving the working efficiency of the device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0018] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a front view schematic diagram of the main structure of the present utility model;

[0020] Figure 3 This is a front sectional view of the limiting mechanism of this utility model;

[0021] Figure 4 This is a schematic cross-sectional view of the adjustment mechanism of this utility model.

[0022] In the diagram: 1. Support plate; 2. Main body of ultrasonic flaw detector; 21. External ultrasonic probe of flaw detector; 3. Adjustment mechanism; 31. First fixed plate; 32. First telescopic rod; 33. First hinge assembly; 34. First connecting rod; 35. First guide wheel; 36. Second hinge assembly; 37. First support rod; 4. Limiting mechanism; 41. Movable assembly; 42. Movable rod; 43. Second guide wheel; 44. Second fixed plate; 45. Second telescopic rod; 46. Third hinge assembly; 47. Second connecting rod; 48. Through rod; 49. Servo motor; 410. Main drive wheel; 411. Fourth hinge assembly; 412. Second support rod; 5. Outer ring of turbine blade. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 One embodiment provided by this utility model:

[0025] The servo motor 49, the ultrasonic flaw detector body 2, and the external ultrasonic probe 21 used in this application are products that can be purchased directly from the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0026] A portable turbine blade flaw detector includes: a support plate 1 and an ultrasonic flaw detector body 2. The ultrasonic flaw detector body 2 is located on one side of the support plate 1, and an external ultrasonic probe 21 is located at the lower end of the ultrasonic flaw detector body 2. An outer ring hoop 5 for the turbine blade is located at the bottom end of the support plate 1. An adjustment mechanism 3 is located on one side of the support plate 1, and a first fixing plate 31 is located inside the adjustment mechanism 3. A first telescopic rod 32 is located on one side of the first fixing plate 31, and a first hinge assembly 33 is located on the first telescopic rod 32. A first connecting rod 34 is located on one side of the first hinge assembly 33. 4. One end is provided with a first guide wheel 35, and a second hinge assembly 36 is provided at the telescopic end of the first telescopic rod 32. A first support rod 37 is provided on one side of the second hinge assembly 36, and a limiting mechanism 4 is provided on the other side of the support plate 1. A movable component 41 is provided inside the limiting mechanism 4. A movable rod 42 is provided on the movable component 41. A second guide wheel 43 is provided at one end of the movable rod 42. By setting this component, the first guide wheel 35 can be made to fit against the inner side of the outer ring hoop 5 of the turbine blade as needed by the adjusting mechanism 3, and the second guide wheel 43 can be made to fit against the outer side of the outer ring hoop 5 of the turbine blade as needed by the adjusting mechanism 4.

[0027] As a further improvement of this utility model, the limiting mechanism 4 is provided with a second fixing plate 44, which is fixedly installed on one side of the support plate 1, and a second telescopic rod 45 is fixedly installed on one side of the second fixing plate 44. By setting this component, the second telescopic rod 45 can be limited and fixed by the second fixing plate 44.

[0028] As a further improvement of this utility model, a third hinge assembly 46 is movably installed on the second telescopic rod 45, and a second connecting rod 47 is movably installed on one side of the third hinge assembly 46. A through rod 48 is movably installed at one end of the second connecting rod 47. By setting this component, the third hinge assembly 46 on the second telescopic rod 45 can provide limiting support for one end of the second connecting rod 47.

[0029] As a further improvement of this utility model, one end of the through rod 48 is fixedly installed on the movable rod 42, and a servo motor 49 is provided on one side of the through rod 48. The servo motor 49 is fixedly installed on the through rod 48 through a fixing rod, and a main drive wheel 410 is rotatably installed on the output end of the servo motor 49 through a coupling. One side of the main drive wheel 410 is rotatably connected to the second guide wheel 43, and a fourth hinge assembly 411 is movably installed on the telescopic end of the second telescopic rod 45. A second support rod 412 is movably installed on one side of the fourth hinge assembly 411, and one end of the second support rod 412 is movably installed on the second connecting rod 47. By setting this component, the servo motor 49 can be fixed by the through rod 48, and the main drive wheel 410 can be driven by the servo motor 49 to work.

[0030] As a further improvement of this utility model, the first fixing plate 31 is fixedly installed on the other side of the support plate 1, the bottom end of the first telescopic rod 32 is fixedly installed on the first fixing plate 31, and the first hinge assembly 33 is movably installed on the first telescopic rod 32. By setting this component, the first telescopic rod 32 can be limited and fixed by the first fixing plate 31.

[0031] As a further improvement of this utility model, one end of the first connecting rod 34 is movably mounted on the first hinge assembly 33, the first guide wheel 35 is rotatably mounted on one end of the first connecting rod 34, and one side of the first guide wheel 35 is in contact with the inner side of the outer ring hoop 5 of the turbine blade. The second hinge assembly 36 is movably mounted on the telescopic end of the first telescopic rod 32, one end of the first support rod 37 is movably mounted on the second hinge assembly 36, and the other end of the first support rod 37 is movably mounted on the first connecting rod 34. By setting this component, the first hinge assembly 33 can limit and support one end of the first connecting rod 34, and the first guide wheel 35 can be driven to work through the first connecting rod 34.

[0032] As a further improvement of this utility model, one side of the movable component 41 is fixedly installed on the support plate 1, one end of the movable rod 42 is movably installed inside the movable component 41, and the second guide wheel 43 is rotatably installed on one end of the movable rod 42, with one side of the second guide wheel 43 fitting against the outer side of the outer ring 5 of the turbine blade. By setting this component, the movable rod 42 can be limited and supported by the movable component 41, and the second guide wheel 43 can be driven to work by the movable rod 42.

[0033] Working Principle: When the portable turbine blade flaw detector is needed, simply power the device with an existing power supply. The limiting mechanism 4 can, as needed, keep one side of the second guide wheel 43 in contact with the outer side of the turbine blade outer ring 5. The second telescopic rod 45 within the mechanism drives the fourth hinge assembly 411, which in turn drives the second support rod 412. The second support rod 412 then drives the second connecting rod 47. During this process, the third hinge assembly 46 provides limiting support to one end of the second connecting rod 47. The second connecting rod 47 then moves the movable rod 42 via the through rod 48. The movable rod 42 can be moved by the movable assembly 41, allowing one side of the second guide wheel 43 to contact the outer side of the turbine blade outer ring 5. The device then... The servo motor 49 drives the main drive wheel 410 to work, which in turn drives the second guide wheel 43 to rotate. The position of the first guide wheel 35 can be adjusted as needed through the adjustment mechanism 3. The first telescopic rod 32 in the mechanism drives the second hinge assembly 36 to work, which in turn drives the first support rods 37 on both sides to work. The first support rods 37 drive the first connecting rod 34 to work, so that the first hinge assembly 33 can limit and support the first connecting rod 34. The first connecting rod 34 drives the first guide wheel 35 to fit against the inner side of the outer ring hoop 5 of the turbine blade, thus making the device move on the outer ring hoop 5 of the turbine blade. The ultrasonic flaw detector body 2 and the ultrasonic probe 21 connected to the flaw detector are used for flaw detection.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A portable turbine blade flaw detector, comprising: The support plate (1) and the ultrasonic flaw detector body (2) are provided on one side of the support plate (1). The ultrasonic flaw detector body (2) is provided at the lower end of the ultrasonic flaw detector body (2). The bottom end of the support plate (1) is provided with a turbine blade outer ring hoop (5). The support plate (1) is characterized in that: the support plate (1) is provided with an adjustment mechanism (3) on one side. The adjustment mechanism (3) is provided with a first fixing plate (31). The first fixing plate (31) is provided with a first telescopic rod (32) on one side. The first telescopic rod (32) is provided with a first hinge assembly. (33) A first connecting rod (34) is provided on one side of the first hinge assembly (33), a first guide wheel (35) is provided at one end of the first connecting rod (34), and a second hinge assembly (36) is provided at the telescopic end of the first telescopic rod (32). A first support rod (37) is provided on one side of the second hinge assembly (36), and a limiting mechanism (4) is provided on the other side of the support plate (1). A movable component (41) is provided in the limiting mechanism (4), and a movable rod (42) is provided on the movable component (41). A second guide wheel (43) is provided at one end of the movable rod (42).

2. The portable turbine blade flaw detector according to claim 1, characterized in that: The limiting mechanism (4) is provided with a second fixing plate (44), which is fixedly installed on one side of the support plate (1), and a second telescopic rod (45) is fixedly installed on one side of the second fixing plate (44).

3. A portable turbine blade flaw detector according to claim 2, characterized in that: A third hinge assembly (46) is movably mounted on the second telescopic rod (45). A second connecting rod (47) is movably mounted on one side of the third hinge assembly (46). A through rod (48) is movably mounted on one end of the second connecting rod (47).

4. A portable turbine blade flaw detector according to claim 3, characterized in that: One end of the through rod (48) is fixedly installed on the movable rod (42), and a servo motor (49) is provided on one side of the through rod (48). The servo motor (49) is fixedly installed on the through rod (48) through a fixed rod, and a main drive wheel (410) is rotatably installed on the output end of the servo motor (49) through a coupling. One side of the main drive wheel (410) is rotatably connected to the second guide wheel (43), and a fourth hinge assembly (411) is movably installed on the telescopic end of the second telescopic rod (45). A second support rod (412) is movably installed on one side of the fourth hinge assembly (411), and one end of the second support rod (412) is movably installed on the second connecting rod (47).

5. A portable turbine blade flaw detector according to claim 1, characterized in that: The first fixing plate (31) is fixedly installed on the other side of the support plate (1), the bottom end of the first telescopic rod (32) is fixedly installed on the first fixing plate (31), and the first hinge assembly (33) is movably installed on the first telescopic rod (32).

6. A portable turbine blade flaw detector according to claim 1, characterized in that: One end of the first connecting rod (34) is movably mounted on the first hinge assembly (33), the first guide wheel (35) is rotatably mounted on one end of the first connecting rod (34), and one side of the first guide wheel (35) is in contact with the inner side of the outer ring hoop (5) of the turbine blade. The second hinge assembly (36) is movably mounted on the telescopic end of the first telescopic rod (32). One end of the first support rod (37) is movably mounted on the second hinge assembly (36), and the other end of the first support rod (37) is movably mounted on the first connecting rod (34).

7. A portable turbine blade flaw detector according to claim 1, characterized in that: The movable component (41) is fixedly installed on one side of the support plate (1), and one end of the movable rod (42) is movably installed inside the movable component (41). The second guide wheel (43) is rotatably installed on one end of the movable rod (42), and one side of the second guide wheel (43) is in contact with the outer side of the turbine blade outer ring hoop (5).

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