Auxiliary device for installing turbine stationary blades

Abstract

This invention relates to the field of turbine diaphragm processing technology, and discloses an auxiliary device for installing turbine stationary blades, comprising: a support mechanism (10), the support mechanism (10) including two cross-arranged support arms (11), the included angle space between the top of the two support arms (11) forming a support space (12) for accommodating and positioning the stationary blades, the included angle between the two support arms (11) being adjustable; an angle adjustment mechanism (20), the angle adjustment mechanism (20) being drivenly connected to the support mechanism (10) for adjusting the included angle between the two support arms (11); and a height adjustment mechanism (30), the height adjustment mechanism (30) being drivenly connected to the support mechanism (10) for adjusting the height of the support mechanism (10). The auxiliary device for installing turbine stationary blades of this invention can improve the installation efficiency of stationary blades and save labor costs.

Description

Technical Field

[0001] This invention relates to the field of turbine diaphragm processing technology, and more specifically to an auxiliary device for installing turbine stationary blades. Background Technology

[0002] In the field of turbine diaphragm manufacturing, the stationary blades on the diaphragm need to be individually machined and then welded between the outer and inner rings of the diaphragm. Before welding the stationary blades, they need to be positioned.

[0003] Currently, the positioning of the stationary blades mainly relies on manual labor. This process usually requires frequent adjustments to the position and height of the stationary blades, resulting in low installation efficiency and high labor costs. Summary of the Invention

[0004] The purpose of this invention is to overcome the problem of low installation and positioning efficiency of stationary blades in the prior art, and to provide an auxiliary device for the installation of turbine stationary blades.

[0005] To achieve the above objectives, the present invention provides an auxiliary device for installing stationary blades of a steam turbine, comprising:

[0006] The support mechanism includes two cross-arranged support arms, the included angle space between the top of the two support arms forms a support space for accommodating and positioning the stationary blade, and the included angle between the two support arms is adjustable.

[0007] An angle adjustment mechanism, which is drivenly connected to the support mechanism, is used to adjust the included angle between the two support arms; and

[0008] A height adjustment mechanism is drivenly connected to the support mechanism to adjust the height of the support mechanism.

[0009] In some embodiments, the installation aid further includes a bracket, the support mechanism and the angle adjustment mechanism are mounted on the bracket, and the height adjustment mechanism is configured to adjust the height of the bracket.

[0010] In some embodiments, the bracket includes a main body and a connecting part. The main body includes a vertical portion and a horizontal portion that together form an L-shape. The angle adjustment mechanism is installed in an installation space defined by the vertical portion and the horizontal portion. The connecting part is disposed at the top of the vertical portion. Two support arms are connected to the connecting part, and at least one support arm is movably connected to the connecting part.

[0011] In some embodiments, the connecting portion includes a first connecting portion and a second connecting portion, the two support arms are connected at their intersection by a first pivot, the first pivot is movably connected to the second connecting portion, the lower ends of the two support arms are respectively movably connected to the first connecting portion, and the angle adjustment mechanism is drivenly connected to one of the support arms.

[0012] In some embodiments, the angle adjustment mechanism is configured to drive one of the support arms to rotate about the first pivot axis, thereby causing the other support arm to rotate about the first pivot axis, so that the two support arms rotate relative to each other.

[0013] In some embodiments, the first connecting portion includes two horizontal connecting plates that are parallel to each other and spaced apart along the axial direction of the first rotating shaft, and the second connecting portion includes two vertical connecting plates that are parallel to each other and spaced apart along the axial direction of the first rotating shaft. The two horizontal connecting plates are connected to the top of the vertical portion, and the two vertical connecting plates are respectively connected to the top of the two horizontal connecting plates.

[0014] The two vertical connecting plates are symmetrically provided with a pair of first rotating shaft connecting holes for connecting the two ends of the first rotating shaft. The first rotating shaft connecting holes are formed as strip-shaped holes extending in the vertical direction so that the first rotating shaft can move along the first rotating shaft connecting holes. The two horizontal connecting plates are symmetrically provided with two pairs of second rotating shaft connecting holes. The two pairs of second rotating shaft connecting holes are spaced apart in the horizontal direction and symmetrical about the center line of the first rotating shaft connecting holes. Each pair of second rotating shaft connecting holes is connected to a second rotating shaft. Each second rotating shaft connecting hole is formed as a strip-shaped hole extending in the horizontal direction so that the second rotating shaft can move along the second rotating shaft connecting hole.

[0015] The lower ends of the two support arms are respectively connected to the two second rotating shafts, and each support arm is provided with a second through hole for the corresponding second rotating shaft to pass through.

[0016] In some embodiments, the angle adjustment mechanism includes a fixed plate, a lead screw, a lead screw nut, and a knob. The fixed plate is fixedly disposed on the horizontal portion and spaced apart from the vertical portion. The lead screw is horizontally disposed between the fixed plate and the vertical portion. The lead screw nut is mounted on the lead screw. The knob is mounted on the end of the lead screw located on the fixed plate side, so as to drive the lead screw to rotate by rotation, thereby driving the lead screw nut to move horizontally along the lead screw. The lead screw nut is drivenly connected to one of the support arms.

[0017] In some embodiments, the angle adjustment mechanism further includes a pair of connecting rods, one end of which is rotatably connected to both ends of the second rotating shaft located near it, and the other end of which is fixedly connected to both sides of the lead screw nut.

[0018] In some embodiments, the installation aid may further include a base, the bracket is located above the base, and the height adjustment mechanism is disposed between the bracket and the base.

[0019] In some embodiments, the height adjustment mechanism includes a stud and a threaded hole disposed on the bracket or the base, the stud being vertically connected between the base and the bracket and threadedly engaged with the threaded hole.

[0020] In some embodiments, flexible pads are provided on the respective sides of the support arm that define the support space.

[0021] The present invention provides an auxiliary device for installing turbine stationary blades. By incorporating a support mechanism, the support space of which provides stable support and positioning for the stationary blades. Furthermore, because the size of the support space is adjustable, it is suitable for stationary blades of various sizes (e.g., thickness) and shapes (e.g., variable or constant cross-section). Additionally, by including a height adjustment mechanism, the height of the stationary blades can be adjusted to meet different installation height requirements. Therefore, the auxiliary device for installing turbine stationary blades of the present invention improves the installation efficiency of stationary blades and saves labor costs.

[0022] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

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

[0024] Figure 1 This is a perspective view of one embodiment of the auxiliary device for installing stationary blades of a steam turbine according to the present invention;

[0025] Figure 2 yes Figure 1 Another perspective view of the auxiliary device used for installing stationary blades of steam turbines;

[0026] Figure 3 yes Figure 2 Front view of the auxiliary device used for installing turbine stationary blades;

[0027] Figure 4 yes Figure 3Left side view of the auxiliary device used for installing turbine stationary blades;

[0028] Figure 5 yes Figure 3 A top view of an auxiliary device used for installing stationary blades in a steam turbine;

[0029] Figure 6 yes Figure 1 A 3D view of the middle support arm.

[0030] Explanation of reference numerals in the attached figures

[0031] 10-Support mechanism, 11-Support arm, 111-First through hole, 112-Second through hole, 12-Support space, 13-First rotating shaft, 20-Angle adjustment mechanism, 21-Fixing plate, 22-Lead screw, 23-Lead screw nut, 24-Knob, 25-Connecting rod, 30-Height adjustment mechanism, 31-Stud, 40-Bracket, 41-Main body, 411-Vertical part, 412-Horizontal part, 413-Installation space, 42-Connecting part, 421-Horizontal connecting plate, 4211-Second rotating shaft connecting hole, 422-Vertical connecting plate, 4221-First rotating shaft connecting hole, 43-Second rotating shaft, 50-Base. Detailed Implementation

[0032] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but should not be used to limit the scope of the present invention. The present invention can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0033] These embodiments are provided to make the invention thorough and complete, and to fully express the scope of the invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0034] It should be noted that, in the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] Furthermore, the terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible range of error. "Parallel" is not strictly parallel, but within the permissible range of error. Terms such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0036] It should also be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0037] All terms used in this invention have the same meaning as understood by one of ordinary skill in the art to which this invention pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0038] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0039] This invention provides an auxiliary device for installing stationary blades of a steam turbine, comprising:

[0040] The support mechanism 10 includes two cross-arranged support arms 11. The space between the top angles of the two support arms 11 forms a support space 12 for accommodating and positioning the stationary blade. The angle between the two support arms 11 is adjustable (i.e., the size of the support space 12 is adjustable).

[0041] An angle adjustment mechanism 20 is drivenly connected to the support mechanism 10 to adjust the included angle between the two support arms 11; and

[0042] A height adjustment mechanism 30 is driven to the support mechanism 10 for adjusting the height of the support mechanism 10.

[0043] The installation auxiliary device for turbine stationary blades of the present invention, by providing a support mechanism 10, the support space 12 of the support mechanism 10 can provide stable support and positioning for the stationary blade. Furthermore, since the size of the support space 12 is adjustable, it can be adapted to stationary blades of various sizes (e.g., thickness) and shapes (e.g., variable cross-section or constant cross-section). In addition, by providing a height adjustment mechanism 30, the height position of the stationary blade can be adjusted to meet different installation height requirements. Therefore, the installation auxiliary device for turbine stationary blades of the present invention can improve the installation efficiency of stationary blades and save labor costs.

[0044] As can be understood from the above, the support space 12 is triangular in shape, which can support various types of stationary blades. Moreover, after the stationary blades reach the installation position, the position of the stationary blades can be finely adjusted, and then the stationary blades can be further limited by adjusting the included angle between the two support arms 11.

[0045] In some implementations, see Figure 1 The installation auxiliary device also includes a bracket 40, on which the support mechanism 10 and the angle adjustment mechanism 20 are mounted. The height adjustment mechanism 30 is configured to adjust the height of the bracket 40. By setting the bracket 40, the support mechanism 10 and the angle adjustment mechanism 20 can be integrated together, while also facilitating the height adjustment of the support mechanism 10.

[0046] As described above, the bracket 40 can have any suitable structure and shape, as long as it can facilitate the installation of the support mechanism 10 and the angle adjustment mechanism 20. Specifically, in some embodiments, see... Figures 1-3 The bracket 40 includes a main body 41 and a connecting part 42. The main body 41 includes a vertical portion 411 and a horizontal portion 412 that together form an L-shape (i.e., the vertical portion 411 and the horizontal portion 412 are connected to each other to form an L-shape). The angle adjustment mechanism 20 is installed in the installation space 413 defined by the vertical portion 411 and the horizontal portion 412. The connecting part 42 is disposed on the vertical portion 411. Two support arms 11 are connected to the connecting part 42, and at least one support arm 11 is movably connected to the connecting part 42. That is, one support arm 11 can be fixed and the angle between the two can be adjusted by the movement of the other support arm 11; or both support arms 11 can be movable and the angle between them can be adjusted by the movement of the two support arms 11.

[0047] In the above description, the L-shaped structure of the main body 41 allows for a more compact arrangement of components, thereby reducing the overall space occupied by the device and facilitating its movement and installation below the turbine diaphragm. The connecting part 42 can have any suitable structure and shape, as long as it enables the installation and adjustment of the two support arms 11.

[0048] In some implementations, see Figures 1-3 The connecting part 42 includes a first connecting part and a second connecting part. Two support arms 11 are connected at their intersection by a first rotating shaft 13. The first rotating shaft 13 is movably connected to the second connecting part. The lower ends of the two support arms 11 are movably connected to the first connecting part. The angle adjustment mechanism 20 is driven to one of the support arms 11. This connection can be a direct connection or an indirect connection through a transmission component.

[0049] As described above, the angle adjustment mechanism 20 can be driven in any suitable manner. There are many driving methods in the prior art, which will not be described in detail here. According to one embodiment of the present invention, the angle adjustment mechanism 20 is configured to drive one of the support arms 11 to rotate around the first rotating shaft 13, thereby causing the other support arm 11 to rotate around the first rotating shaft 13, so that the two support arms 11 rotate relative to each other.

[0050] Furthermore, such as Figures 1-5 As shown, the first connecting portion includes two horizontal connecting plates 421 that are parallel to each other and spaced apart along the axial direction of the first rotating shaft 13. The second connecting portion includes two vertical connecting plates 422 that are parallel to each other and spaced apart along the axial direction of the first rotating shaft 13. The two horizontal connecting plates 421 are connected to the top of the vertical portion 411, and the two vertical connecting plates 422 are respectively connected to the top of the two horizontal connecting plates 421. A pair of first rotating shaft connecting holes 4221 for connecting the two ends of the first rotating shaft 13 are symmetrically arranged on the two vertical connecting plates 422. The first rotating shaft connecting holes 4221 are formed as strip-shaped holes extending in the vertical direction so that the first rotating shaft 13 can move along the first rotating shaft connecting holes 4221. Two pairs of second rotating shaft connecting holes 4211 are symmetrically arranged on the two horizontal connecting plates 421. The two pairs of second rotating shaft connecting holes 4211 are spaced apart in the horizontal direction and about the center line of the first rotating shaft connecting holes 4221 (i.e., Figure 3 The vertical line passing through the center of the first rotating shaft connecting hole 4221 is symmetrical (i.e., the two second rotating shaft connecting holes 4211 on the same horizontal connecting plate 421 are symmetrical about the center line of the first rotating shaft connecting hole 4221, such as...). Figure 3 As shown), each pair of second rotating shaft connecting holes 4211 is connected to a second rotating shaft 43. Each second rotating shaft connecting hole 4211 is formed as a strip-shaped hole extending in the horizontal direction so that the second rotating shaft 43 can move along the second rotating shaft connecting hole 4211. The lower ends of the two support arms 11 are respectively connected to the two second rotating shafts 43. Each support arm 11 is provided with a second through hole 112 for the corresponding second rotating shaft 43 to pass through.

[0051] Among them, such as Figure 4As shown, the two intersecting support arms 11 are in close contact, and the spacing between the two vertical connecting plates 422 is adapted to the thickness of the intersection of the two support arms 11. The support arms 11 can have any suitable structure; see [reference needed] for details. Figure 6 As shown, the support arm 11 may have a variable cross section. The middle part of the support arm 11 is provided with a first through hole 111 through which the first rotating shaft 13 passes, and the first rotating shaft 13 can rotate relative to the first through hole 111. The lower part of the support arm 11 is provided with a second through hole 112 through which the second rotating shaft 43 passes, and the second rotating shaft 43 can rotate relative to the second through hole 112.

[0052] Based on the above settings, refer to Figure 3 When the lower left end of the support arm 11 is driven horizontally to the right, the lower left end moves to the right, thereby driving the first rotating shaft 13 to move upward, causing the lower right end of the support arm to move to the left, thus reducing the support space 12 between the two support arms 11; when the lower left end of the support arm 11 is driven horizontally to the left, the lower left end moves to the left, thereby driving the first rotating shaft 13 to move downward, causing the lower right end of the support arm to move to the right, thus increasing the support space 12 between the two support arms 11.

[0053] In the above description, the angle adjustment mechanism 20 can be any drive mechanism capable of linear drive, such as a cylinder, a motor, etc. According to one embodiment of the present invention, such as... Figures 1-3 As shown, the angle adjustment mechanism 20 includes a fixed plate 21, a lead screw 22, a lead screw nut 23, and a knob 24. The fixed plate 21 is fixedly mounted on the horizontal portion 412 and spaced apart from the vertical portion 411. The lead screw 22 is horizontally mounted between the fixed plate 21 and the vertical portion 411. The lead screw nut 23 is mounted on the lead screw 22. The knob 24 is mounted on the end of the lead screw 22 located on the side of the fixed plate 21, so as to drive the lead screw 22 to rotate by rotation, thereby driving the lead screw nut 23 to move horizontally along the lead screw 22. The lead screw nut 23 is drivenly connected to one of the support arms 11.

[0054] The lead screw nut 23 and one of the support arms 11 can be indirectly connected via any suitable transmission component. In some embodiments, such as... Figures 1-3 As shown, the angle adjustment mechanism 20 also includes a pair of connecting rods 25. One end of the pair of connecting rods 25 is rotatably connected to both ends of the second rotating shaft 43 located near it, and the other end of the pair of connecting rods 25 is fixedly connected to both sides of the lead screw nut 23.

[0055] In this invention, such as Figures 1-5 The installation auxiliary device may further include a base 50, a height adjustment mechanism 30 mounted on the base 50, and a bracket 40 positioned above the height adjustment mechanism 30. The base 50 ensures the stable placement of the entire installation auxiliary device. Figure 1 and Figure 5 In the embodiment shown, the base 50 is a cylindrical base with a large contact area with the ground or other supporting platform.

[0056] The height adjustment mechanism 30 can be any mechanism capable of adjusting the vertical distance between the support 40 and the base 50, such as a lifting support, cylinder, telescopic rod, motor, etc. According to one embodiment of the present invention, the height adjustment mechanism 30 includes a stud 31 and a screw hole (not shown) provided on the support 40 or the base 50. The stud 31 is vertically connected between the base 50 and the support 40 and is threadedly engaged with the screw hole. That is, one end of the stud 31 is fixedly connected to one of the base 50 and the support 40, and the other end of the stud 31 is threadedly engaged with the other of the base 50 and the support 40. By rotating the base 50 or the support 40, the distance between the support 40 and the base 50 can be adjusted, thereby adjusting the height of the support 40.

[0057] In this invention, a flexible pad may be provided on the corresponding side of the support arm 11 that defines the support space 12. That is, a flexible pad is provided on the side of the support arm 11 that contacts the stationary blade to prevent damage to the stationary blade. The flexible pad can be made of any suitable flexible material such as rubber, silicone, or cotton cloth.

[0058] The following structural drawings illustrate one method of using the installation auxiliary device of the present invention:

[0059] S1. Place the two installation auxiliary devices at a certain distance from each other according to the required length of the stationary blade, below the position where the stationary blade is to be installed;

[0060] S2. Rotate the base 50 to adjust the height of the bracket 40 so that the support space 12 is close to the position where the stationary blade is to be installed;

[0061] S3. Rotating the knob 24 drives the lead screw 22 to rotate, and the lead screw nut 23 moves along the axial direction of the lead screw 22, thereby adjusting the included angle of the two support arms 11 of the installation auxiliary device.

[0062] S4. Place a stationary blade in the support space 12 of the two installation auxiliary devices;

[0063] S5. Adjust the height of the bracket 40 to bring the stationary blade to the installation position.

[0064] S6. By finely adjusting the knob 24, the included angle of the two support arms 11 can stably support the stationary blade.

[0065] S7. After checking that the installation position of the stationary blade is qualified, carry out the welding process for individual stationary blades.

[0066] After the aforementioned stationary blades are welded, the positions of the two installation auxiliary devices are readjusted to proceed with the positioning and subsequent welding of the next stationary blade.

[0067] The auxiliary device for installing turbine stationary blades of the present invention has the following advantages: simple structure, convenient operation, high flexibility, strong versatility, and minimal damage to the stationary blades.

[0068] The various embodiments of the present invention have now been described in detail. To avoid obscuring the concept of the invention, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0069] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.

Claims

1. An auxiliary device for installing stationary blades of a steam turbine, characterized in that, include: The support mechanism (10) includes two cross-arranged support arms (11), the top angle space between the two support arms (11) forms a support space (12) for accommodating and positioning the stationary blade, and the angle between the two support arms (11) is adjustable; An angle adjustment mechanism (20) is driven to be connected to the support mechanism (10) for adjusting the included angle between the two support arms (11); as well as A height adjustment mechanism (30) is drivenly connected to the support mechanism (10) for adjusting the height of the support mechanism (10). The installation auxiliary device further includes a bracket (40), which includes a main body (41) and a connecting part (42). The connecting part (42) includes a first connecting part and a second connecting part. The two support arms (11) are connected at their intersection by a first rotating shaft (13). The first rotating shaft (13) is movably connected to the second connecting part. The lower ends of the two support arms (11) are movably connected to the first connecting part. The angle adjustment mechanism (20) is driven to connect with one of the support arms (11). The first connecting portion includes two horizontal connecting plates (421) arranged parallel to each other and spaced apart along the axial direction of the first rotating shaft (13). The second connecting portion includes two vertical connecting plates (422) arranged parallel to each other and spaced apart along the axial direction of the first rotating shaft (13). A pair of first rotating shaft connecting holes (4221) are symmetrically arranged on the two vertical connecting plates (422) for connecting the two ends of the first rotating shaft (13). The first rotating shaft connecting holes (4221) are formed as strip-shaped holes extending in the vertical direction, so that the first rotating shaft (13) can be connected along the axial direction of the first rotating shaft (13). A pivot connection hole (4221) moves, and two pairs of second pivot connection holes (4211) are symmetrically arranged on the two horizontal connecting plates (421). The two pairs of second pivot connection holes (4211) are spaced apart in the horizontal direction and are symmetrical about the center line of the first pivot connection hole (4221). Each pair of second pivot connection holes (4211) is connected to a second pivot (43). Each second pivot connection hole (4211) is formed as a strip hole extending in the horizontal direction so that the second pivot (43) can move along the second pivot connection hole (4211).

2. The auxiliary device for installing turbine stationary blades according to claim 1, characterized in that, The support mechanism (10) and the angle adjustment mechanism (20) are mounted on the bracket (40), and the height adjustment mechanism (30) is configured to adjust the height of the bracket (40).

3. The auxiliary device for installing turbine stationary blades according to claim 2, characterized in that, The main body (41) includes a vertical portion (411) and a horizontal portion (412) that together form an L-shape. The angle adjustment mechanism (20) is installed in the installation space (413) defined by the vertical portion (411) and the horizontal portion (412). The connecting portion (42) is disposed at the top of the vertical portion (411). Two support arms (11) are connected to the connecting portion (42), and at least one support arm (11) is movably connected to the connecting portion (42).

4. The auxiliary device for installing turbine stationary blades according to claim 3, characterized in that, The angle adjustment mechanism (20) is configured to drive one of the support arms (11) to rotate around the first pivot (13) and drive the other support arm (11) to rotate around the first pivot (13), thereby causing the two support arms (11) to rotate relative to each other.

5. The auxiliary device for installing turbine stationary blades according to claim 4, characterized in that, The two horizontal connecting plates (421) are connected to the top of the vertical part (411), and the two vertical connecting plates (422) are respectively connected to the top of the two horizontal connecting plates (421); The lower ends of the two support arms (11) are respectively connected to the two second rotating shafts (43), and each support arm (11) is provided with a second through hole (112) for the corresponding second rotating shaft (43) to pass through.

6. The auxiliary device for installing turbine stationary blades according to claim 5, characterized in that, The angle adjustment mechanism (20) includes a fixed plate (21), a lead screw (22), a lead screw nut (23), and a knob (24). The fixed plate (21) is fixedly disposed on the horizontal part (412) and spaced apart from the vertical part (411). The lead screw (22) is horizontally disposed between the fixed plate (21) and the vertical part (411). The lead screw nut (23) is installed on the lead screw (22). The knob (24) is installed at the end of the lead screw (22) located on the side of the fixed plate (21) so as to drive the lead screw (22) to rotate by rotation, thereby driving the lead screw nut (23) to move horizontally along the lead screw (22). The lead screw nut (23) is driven to connect with one of the support arms (11).

7. The auxiliary device for installing turbine stationary blades according to claim 6, characterized in that, The angle adjustment mechanism (20) further includes a pair of connecting rods (25), one end of the pair of connecting rods (25) being rotatably connected to both ends of the second rotating shaft (43) located near it, and the other end of the pair of connecting rods (25) being fixedly connected to both sides of the lead screw nut (23).

8. The auxiliary device for installing turbine stationary blades according to any one of claims 2-7, characterized in that, The installation auxiliary device may also include a base (50), the bracket (40) is located above the base (50), and the height adjustment mechanism (30) is disposed between the bracket (40) and the base (50).

9. The auxiliary device for installing turbine stationary blades according to claim 8, characterized in that, The height adjustment mechanism (30) includes a stud (31) and a screw hole provided on the bracket (40) or the base (50). The stud (31) is vertically connected between the base (50) and the bracket (40) and is threadedly engaged with the screw hole.

10. The auxiliary device for installing turbine stationary blades according to any one of claims 1-7, characterized in that, The support arm (11) has a flexible pad on the corresponding side for defining the support space (12).

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