Test sensor assembly and positioning fixture on exhaust cylinder airfoil

Abstract

This utility model discloses a fixture for assembling and positioning test sensors on an exhaust cylinder airfoil, including airfoil positioning plates, connecting rods, and a top plate. Two airfoil positioning plates are provided, each with a positioning notch on its lower side that fits into the airfoil inside the exhaust cylinder. The two airfoil positioning plates are connected as a whole by the connecting rod. The top plate is mounted on top of the two airfoil positioning plates and has multiple positioning holes for positioning the test sensors, with the positioning holes having an inclined angle. In use, the airfoil positioning plates are snapped onto the airfoil inside the exhaust cylinder through the positioning notches, and the test sensors are positioned through the positioning holes. This structure allows for the quick and easy installation of multiple sensors on the airfoil with accurate positioning.

Description

Technical Field

[0001] This utility model relates to the field of gas turbine technology, and in particular to a test sensor assembly and positioning fixture on an exhaust cylinder airfoil. Background Technology

[0002] The exhaust cylinder is a large, complex metal structural component in a gas turbine. As the connecting body between the turbine cylinder and the rear diffuser, it not only guides and reduces the pressure of the high-temperature, high-pressure airflow, but also serves as the bearing housing for the gas turbine's main shaft and the support for the entire gas turbine on the engine base. The airfoil, located in the airflow channel between the inner and outer cylinders of the exhaust cylinder, directly faces the impact of the high-temperature, high-pressure gas. Important data such as airflow temperature, velocity, and pressure during gas turbine operation need to be measured and collected using sensors mounted on the airfoil. Previously, this involved measuring each sensor individually, scribing lines to determine the sensor's position and angle, and then welding them in – a highly inefficient process. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a test sensor assembly and positioning fixture on an exhaust cylinder airfoil, so as to meet the requirements of quick and easy installation of multiple sensors on the airfoil and to achieve accurate positioning.

[0004] To achieve the aforementioned technical features, the purpose of this utility model is as follows: A test sensor assembly and positioning fixture for an exhaust cylinder airfoil includes an airfoil positioning plate, a connecting rod, and a top plate. Two airfoil positioning plates are provided, each with a positioning notch on its lower side. The positioning notch is adapted to fit the airfoil inside the exhaust cylinder. The two airfoil positioning plates are connected as a whole by the connecting rod. The top plate is installed on top of the two airfoil positioning plates and has multiple positioning holes for positioning the test sensor. The positioning holes have an inclination angle α. In use, the airfoil positioning plate is snapped onto the airfoil inside the exhaust cylinder through the positioning notch, and the test sensor is positioned through the positioning holes.

[0005] The positioning hole is located on the top plate.

[0006] The top plate is provided with multiple through holes, and the positioning block is installed on the top plate through the through holes. The positioning holes are set on the positioning block.

[0007] The top plate includes a first clamping plate and a second clamping plate. A notch is provided on one side of the first clamping plate and the second clamping plate opposite to each other. When the first clamping plate and the second clamping plate are closed together, the notch forms the through hole. A plurality of bolt holes are provided on the first clamping plate and the second clamping plate respectively. The bolt holes are used to install clamping bolts, which close and fix the first clamping plate and the second clamping plate together.

[0008] The positioning block includes a positioning plate, a frustum is provided on the lower side of the positioning plate, and a positioning hole is provided on the positioning block, the positioning hole passing through the positioning plate and the frustum, the frustum being installed into the through hole of the top plate.

[0009] The positioning plate is also provided with a limiting hole, and the top plate is provided with a plurality of first threaded holes. The threaded end of the locking screw passes through the limiting hole and is screwed into the first threaded hole.

[0010] The airfoil positioning plate has connection holes on both sides of the positioning notch. The connecting rod is a screw rod, and the two screw rods pass through the connection holes on the two airfoil positioning plates respectively. Nuts are screwed onto the screw rods on both sides of the airfoil positioning plate respectively.

[0011] The top of the airfoil positioning plate is provided with two bosses, and the top plate is placed between the two bosses.

[0012] One end of the top plate is provided with a second threaded hole, and an adjusting screw is screwed into the second threaded hole.

[0013] Compared with the prior art, the outstanding features of this utility model, which adopts the above technical solution, are:

[0014] 1. The airfoil positioning plate of this utility model is snapped onto the airfoil inside the exhaust cylinder through a positioning notch. A top plate is mounted and supported on the airfoil positioning plate, and the top plate has positioning holes through which the test sensor is positioned. The positioning holes have an inclination angle α, which is set according to the installation orientation of the corresponding sensor. This structure allows for the quick and easy installation of multiple sensors on the airfoil while achieving accurate positioning.

[0015] 2. The top plate of this utility model is provided with multiple through holes. The positioning block is installed on the top plate through the through holes. The positioning hole is set on the positioning block. In this way, a positioning hole can be machined on each positioning block individually, while only ordinary circular through holes are machined on the top plate. If one of the positioning holes is machined incorrectly, another positioning block can be taken and machined again.

[0016] 3. To ensure the top plate is firmly supported inside the exhaust cylinder, this utility model provides a second threaded hole at one end of the top plate, through which an adjusting screw is screwed. When the top plate is brought into the exhaust cylinder, the adjusting screw is turned inward to shorten the total length of the top plate and the adjusting screw. When it is necessary to support it inside the exhaust cylinder, the adjusting screw is turned outward to lengthen the total length of the top plate and the adjusting screw, thus supporting the top plate inside the exhaust cylinder and preventing it from shifting. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the right-side structure of this utility model.

[0020] Figure 3 This is a top view of the structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the top plate of this utility model.

[0022] Figure 5 This is a schematic diagram of the main structure of the positioning block of this utility model.

[0023] Figure 6 This is a schematic diagram of the right side of the positioning block of this utility model.

[0024] Figure label:

[0025] Airfoil positioning plate 10, positioning notch 11, connecting hole 12, boss 13;

[0026] Connecting rod 20, nut 21;

[0027] Top plate 30, first clamping plate 31, second clamping plate 32, notch 33, bolt hole 34, clamping bolt 35, second threaded hole 36, first threaded hole 37;

[0028] Adjusting screw 40;

[0029] Positioning block 50, positioning plate 51, frustum 52, limiting hole 53, locking screw 54;

[0030] Positioning hole 60. Detailed Implementation

[0031] 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.

[0032] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0033] Example 1:

[0034] See Figure 1-6 A fixture for assembling and positioning a test sensor on an exhaust cylinder airfoil includes an airfoil positioning plate 10, a connecting rod 20, and a top plate 30. Two airfoil positioning plates 10 are provided, each with a positioning notch 11 on its lower side. The positioning notch 11 is adapted to fit the airfoil inside the exhaust cylinder. The two airfoil positioning plates 10 are connected as a whole by the connecting rod 20. The top plate 30 is mounted on top of the two airfoil positioning plates 10 and has multiple positioning holes 60 for positioning the test sensor. The positioning holes 60 have an inclination angle α. Figure 6 As shown.

[0035] In use, the airfoil positioning plate 10 is snapped onto the airfoil inside the exhaust cylinder through the positioning notch 11. The top plate 30 is mounted and supported on the airfoil positioning plate 10. The top plate 30 has positioning holes 60, through which the test sensor is positioned. The positioning hole 60 has an inclination angle α, which is set according to the installation orientation of the corresponding sensor. This structure allows for the quick and easy installation of multiple sensors on the airfoil while achieving accurate positioning.

[0036] In this embodiment, the positioning hole 60 is directly provided on the top plate 30.

[0037] In this embodiment, see Figure 1 , 2 The airfoil positioning plate 10 has connecting holes 12 on both sides of the positioning notch 11. The connecting rod 20 is a screw rod, and two screw rods pass through the corresponding connecting holes 12 on the two airfoil positioning plates 10 respectively. Nuts 21 are screwed onto the screw rods on both sides of the airfoil positioning plate 10. The connecting rod 20 is a screw rod, which facilitates the adjustment of the distance between the two airfoil positioning plates 10 as needed.

[0038] Further, see Figure 2 The top of the airfoil positioning plate 10 is provided with two protrusions 13, and the top plate 30 is placed and supported between the two protrusions 13. This structure makes it easy to install the tooling into the exhaust cylinder and also easy to remove.

[0039] Example 2:

[0040] Because the positioning holes 60 have an inclination angle α, they are difficult to process, and the inclination angle α of each positioning hole 60 is not the same. If the positioning holes 60 are directly set on the top plate 30, since there are multiple positioning holes 60, if one of the positioning holes 60 is processed incorrectly, the entire top plate 30 will be scrapped.

[0041] Therefore, the difference between this embodiment and Embodiment 1 is that, see... Figure 3 Multiple through holes are provided on the top plate 30. The positioning block 50 is installed on the top plate 30 through the through holes. The positioning hole 60 is set on the positioning block 50. In this way, a positioning hole 60 can be machined on each positioning block 50, while only ordinary circular through holes are machined on the top plate 30. If one of the positioning holes 60 is machined incorrectly, another positioning block 50 can be taken and machined again.

[0042] Furthermore, to facilitate the installation of the positioning block 50 onto the top plate 30, see [reference needed]. Figure 3 , 4 The top plate 30 includes a first clamping plate 31 and a second clamping plate 32. A notch 33 is provided on the opposite side of the first clamping plate 31 and the second clamping plate 32. When the first clamping plate 31 and the second clamping plate 32 are closed together, the notch 33 forms a through hole. A plurality of bolt holes 34 are correspondingly provided on the first clamping plate 31 and the second clamping plate 32. The bolt holes 34 are used to install clamping bolts 35, which close and fix the first clamping plate 31 and the second clamping plate 32 together.

[0043] Bolt hole 34 can be a hole that passes through the first clamping plate 31 and the second clamping plate 32. In this case, the clamping bolt 35 is a bolt with a nut. Bolt hole 34 can also be a threaded hole on the first clamping plate 31 and a through hole on the second clamping plate 32. In this case, the clamping bolt 35 is a screw without a nut. The threaded end of the screw passes through the through hole on the second clamping plate 32 and is screwed into the threaded hole on the first clamping plate 31 for fixation.

[0044] See Figure 5 , 6 The positioning block 50 includes a positioning plate 51, a frustum 52 is provided on the lower side of the positioning plate 51, and a positioning hole 60 is provided on the positioning block 50. The positioning hole 60 passes through the positioning plate 51 and the frustum 52, and the frustum 52 is installed into the through hole of the top plate 30.

[0045] Furthermore, the positioning plate 51 is also provided with a limiting hole 53, and the top plate 30 is provided with a plurality of first threaded holes 37. The threaded end of the locking screw 54 passes through the limiting hole 53 and is screwed into the first threaded hole 37 to prevent the positioning block 50 from falling off.

[0046] Example 3:

[0047] Because the internal dimensions of the exhaust cylinder at the airfoil location differ, in order to ensure that the top plate 30 is supported inside the exhaust cylinder, based on Embodiment 1 or Embodiment 2, see [reference needed]. Figure 1 , 3 One end of the top plate 30 is provided with a second threaded hole 36, and an adjusting screw 40 is screwed into the second threaded hole 36.

[0048] When the top plate 30 is brought into the exhaust cylinder, the adjusting screw 40 is turned inward to shorten the total length of the top plate 30 and the adjusting screw 40. When it is necessary to support it inside the exhaust cylinder, the adjusting screw 40 is turned outward to lengthen the total length of the top plate 30 and the adjusting screw 40, so that the top plate 30 can be supported inside the exhaust cylinder and prevent the top plate 30 from moving.

[0049] In use, the airfoil positioning plates 10 are located on both sides of the airfoil, and the top plate 30 is placed on the two airfoil positioning plates 10. Multiple positioning blocks 50 mounted on the top plate 30 are machined with positioning holes 60 corresponding to different position sensors, satisfying the angle requirements of the corresponding position sensors.

[0050] After the test sensor is inserted through the positioning hole 60, the tail of the test sensor is attached to the airfoil to complete the positioning. After spot welding the sensor in place, the fixture can be removed. This allows for the positioning of the angles and positions of all sensors on a single airfoil in a single installation, saving time and ensuring accurate positioning.

[0051] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Any modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A fixture for assembling and positioning test sensors on an exhaust cylinder airfoil, characterized in that: The system includes an airfoil positioning plate (10), a connecting rod (20), and a top plate (30). There are two airfoil positioning plates (10). The lower side of the two airfoil positioning plates (10) is provided with a positioning notch (11). The positioning notch (11) is adapted to the airfoil in the exhaust cylinder. The two airfoil positioning plates (10) are connected as a whole by the connecting rod (20). The top plate (30) is installed on the top of the two airfoil positioning plates (10). The top plate (30) has multiple positioning holes (60) for positioning the test sensor. The positioning holes (60) have an inclination angle α. In use, the airfoil positioning plate (10) is snapped onto the airfoil in the exhaust cylinder through the positioning notch (11), and the test sensor is positioned through the positioning hole (60).

2. The test sensor assembly and positioning fixture on the exhaust cylinder airfoil according to claim 1, characterized in that: The positioning hole (60) is provided on the top plate (30).

3. The test sensor assembly and positioning fixture on the exhaust cylinder airfoil according to claim 1, characterized in that: The top plate (30) is provided with multiple through holes, and the positioning block (50) is installed on the top plate (30) through the through holes. The positioning hole (60) is provided on the positioning block (50).

4. The test sensor assembly and positioning fixture on the exhaust cylinder airfoil according to claim 3, characterized in that: The top plate (30) includes a first clamping plate (31) and a second clamping plate (32). A notch (33) is provided on the opposite side of the first clamping plate (31) and the second clamping plate (32). When the first clamping plate (31) and the second clamping plate (32) are closed together, the notch (33) forms the through hole. A plurality of bolt holes (34) are correspondingly provided on the first clamping plate (31) and the second clamping plate (32). The bolt holes (34) are used to install clamping bolts (35). The clamping bolts (35) close and fix the first clamping plate (31) and the second clamping plate (32).

5. The test sensor assembly and positioning fixture on the exhaust cylinder airfoil according to claim 3 or 4, characterized in that: The positioning block (50) includes a positioning plate (51), a frustum (52) is provided on the lower side of the positioning plate (51), and a positioning hole (60) is provided on the positioning block (50). The positioning hole (60) passes through the positioning plate (51) and the frustum (52), and the frustum (52) is installed in the through hole of the top plate (30).

6. The test sensor assembly and positioning fixture on the exhaust cylinder airfoil according to claim 5, characterized in that: The positioning plate (51) is also provided with a limiting hole (53), and the top plate (30) is provided with a plurality of first threaded holes (37). The threaded end of the locking screw (54) passes through the limiting hole (53) and is screwed into the first threaded hole (37).

7. The test sensor assembly and positioning fixture on the exhaust cylinder airfoil according to claim 1, characterized in that: The airfoil positioning plate (10) has connecting holes (12) on both sides of the positioning notch (11). The connecting rod (20) is a screw rod. The two screw rods pass through the connecting holes (12) on the two airfoil positioning plates (10) respectively. Nuts (21) are screwed onto the screw rods on both sides of the airfoil positioning plate (10).

8. The test sensor assembly and positioning fixture on the exhaust cylinder airfoil according to claim 1, characterized in that: The top of the airfoil positioning plate (10) is provided with two bosses (13), and the top plate (30) is placed between the two bosses (13).

9. The assembly and positioning fixture for the test sensor on the exhaust cylinder airfoil according to claim 1, characterized in that: One end of the top plate (30) is provided with a second threaded hole (36), and an adjusting screw (40) is screwed into the second threaded hole (36).

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