Large and medium-sized horizontal hydro-generator stator turnover hoisting device and method thereof

Abstract

The invention provides a large and medium-sized horizontal hydro-generator stator overturning and hoisting device and method, and the device comprises at least two overturning supports which are fixed on the ground and are respectively hinged to the lower side of the right end of a stator; the at least two turning-over ground anchors are fixed on the ground, and the distance between the turning-over ground anchors and the right end face of the stator is larger than the diameter of the stator; the first connecting point is positioned on the upper side of the right end of the stator and is correspondingly matched with the turnover ground anchor; the first tension device is connected with the first connecting point and the corresponding turnover ground anchor so as to be used for pulling the stator to rotate along the turnover support; the second connecting point is located at the upper end of the stator, and the second tension device is connected with the second connecting point and the external hoisting device so that the external hoisting device and the stator can be in the stress state all the time. The stator overturning device has the advantages of being stable and safe in overturning process, high in overturning efficiency and not prone to damage stator components.

Description

Technical Field

[0001] The present application relates to the technical field of hydraulic generator stator auxiliary equipment, and in particular to a stator turning and hoisting device and method for large and medium-sized horizontal hydraulic generators. Background Art

[0002] The stator of large and medium-sized horizontal hydro-turbine generators is an important part of hydro-power generator sets. The stator is generally composed of three parts: iron core, winding and frame. The function of the stator of the hydro-turbine generator is to cut the magnetic field to generate voltage to convert mechanical energy into electrical energy. After a period of use, the hydro-turbine generator needs to be repaired. At this time, the stator of the hydro-turbine generator will be lifted out for maintenance. Since the stator of the horizontal hydro-turbine generator is stored in a vertical state, it is easy to cause deformation or collapse. Therefore, the stator in the vertical state needs to be flipped to a horizontal state for maintenance.

[0003] Patent No. CN 201820797852.1 discloses a stator turning tool for a bulb cross-flow unit, comprising a stator and a turning tool body, wherein the turning tool body is installed at the bottom of the stator, and the turning tool body comprises a supporting pier and a turning pier, wherein the supporting pier comprises a bottom plate 1 and a top plate 1, wherein the bottom plate 1 is installed at the bottom of the top plate 1, and a supporting block is arranged between the top plate 1 and the bottom plate 1, and the turning pier comprises a bottom plate 2 and a top plate 2, and a limiting block and a limiting plate are arranged at the top of the bottom plate 2, wherein the limiting plate is installed on one side of the limiting block, and a limiting shaft is arranged on one side of the limiting plate, and a through hole is arranged on the limiting plate, and one end of the rotating shaft passes through the through hole on the limiting plate and is connected with the limiting shaft, and a connecting block is arranged at the bottom of the top plate 2, and the connecting block is sleeved on the rotating shaft. The above turning device has no reliable stable control structure or measures during the turning process of the stator, which can easily damage the stator frame, windings, flanges and other stator components, affecting the assembly of the generator, and in severe cases causing the generator to fail to work normally.

[0004] In view of this, the present application provides a stator turning-over and hoisting device and method for large and medium-sized horizontal hydro-turbine generators, which is safe, efficient and not prone to damage to components. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides a stator turning and hoisting device for large and medium-sized horizontal hydro-turbine generators, comprising:

[0006] At least two flip supports, both of which are fixed on the ground and are hinged to the lower side of the right end of the stator;

[0007] At least two turning ground anchors, both of which are fixed on the ground, and the distance between the turning ground anchor and the right end surface of the stator is greater than the diameter of the stator;

[0008] A first connection point, the first connection point is located at the upper side of the right end of the stator and corresponds to the turning anchor;

[0009] A first pulling force device, wherein the first pulling force device is respectively connected to the first connection point and the corresponding turning anchor to pull the stator to rotate along the turning support;

[0010] A second connection point and a second tension device, wherein the second connection point is located at the upper end of the stator, and the second tension device is respectively connected to the second connection point and the external lifting device so that the external lifting device and the stator are always in a stressed state.

[0011] In some embodiments, the angle between the two flip supports that are farthest apart and the line connecting the stator center is in the range of 40-60°.

[0012] In some embodiments, a turning web matching the curvature of the stator is further included, wherein the turning web is fixedly disposed on the lower side of the right end of the stator for being hinged to the turning support.

[0013] In some embodiments, a third tension device and a third connection point fixed on the upper side of the stator are further included, the third connection point is symmetrically arranged on the front and rear sides of the second connection point, and the third tension device is respectively connected to the third connection point and the external lifting device to assist the second tension device to improve operation stability.

[0014] In some embodiments, a plurality of supporting steel piers are provided between the turnover support and the turnover anchor, and the plurality of supporting steel piers are arranged in a ring and match the shape of the stator.

[0015] In some embodiments, the plurality of supporting steel piers are evenly arranged.

[0016] In some embodiments, a wedge plate is further included, wherein the wedge plate is located between the supporting steel pier and the right end surface of the stator and is used to make the right end surface of the stator in the same horizontal plane in a horizontal state.

[0017] In some embodiments, a fixed shaft is transversely arranged on the flip support, and a through hole is provided on the stator to match and hinge with the fixed shaft.

[0018] The present application also provides a method for turning over and hoisting the stator of a large and medium-sized horizontal hydro-turbine generator. The method is based on the above-mentioned large and medium-sized horizontal hydro-turbine generator stator turning over and hoisting device to perform stator turning over and hoisting, and comprises the following steps:

[0019] S100, hoisting the stator to a specified position by using an external hoisting device so that the lower side of the right end of the stator is hinged to the flip support, and at this time, the external hoisting device is connected to the second connection point at the upper end of the stator through the second tension device;

[0020] S200, connecting the corresponding turning anchor with the first connection point through a first pulling device, and then using at least two first pulling devices to synchronously pull the stator to turn along the turning support so that the center of gravity of the stator shifts to the right, and in the pulling process, adjusting the pulling force of the corresponding first pulling device in real time according to the degree of rightward deviation of the front and rear sides of the right end surface of the stator;

[0021] S300. When the first tension device pulls the stator to deflect to the right, the external lifting device is synchronously moved to the lower right so that the external lifting device and the stator are always in a stress state, until the right end surface of the stator is parallel to the horizontal plane, thereby completing the flipping operation of the stator of the horizontal turbine generator from a vertical state to a horizontal state.

[0022] In some embodiments, the first pulling device and the second pulling device are both one of a manual chain hoist and an electric chain hoist.

[0023] Compared with the prior art, the stator turning hoisting device and method for large and medium-sized horizontal hydro-turbine generators provided by the present application are connected to the lower side of the right end of the stator through a turning support, the first tension device connects the turning anchor to the upper side of the right end of the stator, the external hoisting device is connected to the upper side of the stator through a second tension device, and the stator is pulled to turn along the turning support by the first tension device so that the center of gravity of the stator is shifted to the right side. At the same time, the external hoisting device and the stator are always in a stress state, thereby ensuring that the stator turning process is controllable, reducing the safety risk of the stator turning operation, and improving the stator turning work efficiency. Therefore, the present application has the characteristics of a smooth and safe turning process, high turning efficiency, and not easy to damage the stator components. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the embodiments below. The accompanying drawings are only used for the purpose of illustrating some embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0025] Figure 1 A schematic structural diagram of a stator turning hoisting device for a large or medium-sized horizontal hydro-turbine generator in a vertical state provided in some embodiments of the present application is shown;

[0026] Figure 2 Shows Figure 1 Right view of

[0027] Figure 3 The schematic diagram of the structure of the horizontal state of the stator turning hoisting device for large and medium-sized horizontal hydro-turbine generators provided in some embodiments of the present application is shown.

[0028] Figure 4The schematic diagram of the structure of the stator turning hoisting device for large and medium-sized horizontal hydro-turbine generators in the turning state provided in some embodiments of the present application is shown.

[0029] Figure 5 A flow chart of a method for turning over and hoisting a stator of a large or medium-sized horizontal hydro-turbine generator provided in some embodiments of the present application is shown.

[0030] The reference numerals in the specific implementation manner are as follows:

[0031] 1 Stator

[0032] 2 Flip support

[0033] 3 Turn over anchor

[0034] 4First connection point

[0035] 5. The first tension device

[0036] 6 Second connection point

[0037] 7. Second pulling device

[0038] 8 hooks

[0039] 9 Turn over belly board

[0040] 10Third pulling device

[0041] 11Third connection point

[0042] 12Supporting steel piers

[0043] 13 Wedge Blocks

[0044] 14 wooden square. DETAILED DESCRIPTION

[0045] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating the orientation or position relationship, unless otherwise specified, they are understood to be based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. Figure 1 For example, the vertical paper surface facing upward is up, the vertical paper surface facing downward is down, the vertical paper surface to the left is left, the vertical paper surface to the right is right, the vertical paper surface inward is front, and the vertical paper surface outward is back.

[0046] In addition, if there is a feature defined as "first" or "second", it is only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Features defined as "first" or "second" may explicitly or implicitly include at least one of the defined features. If there is a description of "plurality", the general meaning is to include at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In this application, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed" and so on should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection, it can be a direct connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0048] In the description of this specification, if the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0049] See also Figure 1-Figure 4 As shown, the embodiment of the present application provides a stator turning hoisting device for a large or medium-sized horizontal hydro-turbine generator, comprising:

[0050] At least two flip supports 2, both of which are fixed on the ground and hinged to the lower side of the right end of the stator 1;

[0051] At least two turning ground anchors 3, wherein the at least two turning ground anchors 3 are fixed on the ground, and the distance between the turning ground anchor 3 and the right end surface of the stator 1 is greater than the diameter of the stator 1;

[0052] A first connection point 4, which is located at the upper right end of the stator 1 and matches the turning anchor 3;

[0053] A first tension device 5, wherein the first tension device 5 is respectively connected to the first connection point 4 and the corresponding turning anchor 3 to pull the stator 1 to rotate along the turning support 2;

[0054] The second connection point 6 and the second tension device 7, wherein the second connection point 6 is located at the upper end of the stator 1, and the second tension device 7 is respectively connected to the second connection point 6 and the external lifting device so that the external lifting device and the stator 1 are always in a stressed state.

[0055] In the implementation mode of the present application, at least two flip supports 2 are respectively hinged to the lower right side of the stator 1, so that the stator 1 can flip freely along the flip support 2; the hook 8 of the external lifting device is connected to the upper side of the stator 1 through the second tension device 7, so that the upper side of the stator 1 is always kept in a stress state with the external lifting device through the second tension device 7; the first tension device 5 connects the turning anchor 3 to the upper right side of the stator 1, and the stator 1 can be pulled to flip along the flip support 2 by the first tension device 5 so that the center of gravity of the stator 1 is shifted to the right side, and at the same time, the external lifting device moves to the lower right. At this time, since the hook 8 of the external lifting device is always in a stress state with the stator 1, it is ensured that the first tension device 5 pulls the stator 1 to flip to the right side. The process is always in a stable state, thereby ensuring that the stator flipping process is controllable, effectively reducing the safety risk of the stator flipping operation, and improving the stator flipping work efficiency. Therefore, the present application has the characteristics of a stable and safe flipping process, high flipping efficiency, and not easy to damage the stator components.

[0056] In some embodiments, the angle between the two flip supports 2 that are farthest apart and the center line of the stator 1 is in the range of 40°-60°.

[0057] In the above embodiment, the flip support 2 and the flip anchor 3 are respectively arranged on the upper and lower sides of the right end surface of the stator 1 and are symmetrically arranged, and the angle between the two flip supports 2 farthest apart, i.e., the two flip supports 2 arranged at the front and rear sides of the right end surface of the stator 1 and the center line of the stator 1 is as follows: Figure 2 The angle α in the embodiment ranges from 40° to 60°. For example, the angle α can be 40°, 45°, 50°, 55°, 60°, etc. When the angle α is less than 40°, the stator 1 is easily tilted and misaligned when being pulled to the right by at least two first tension devices 5; when the angle α is greater than 60°, the stator 1 is not easily pulled when being pulled to the right by at least two first tension devices 5.

[0058] In some embodiments, a turning web 9 matching the curvature of the stator 1 is further included, and the turning web 9 is fixedly disposed on the lower side of the right end of the stator 1 for being hinged to the turning support 2 .

[0059] In the above embodiment, the turning-over web 9 is fixedly connected to the turning-over surface flange of the stator 1 by bolts, and the turning-over web 9 can be used to effectively protect the components in the stator 1 during the turning process.

[0060] In some embodiments, a third tension device 10 and a third connection point 11 fixed on the upper side of the stator 1 are further included. The third connection point 11 is symmetrically arranged on the front and rear sides of the second connection point 6. The third tension device 10 is respectively connected to the third connection point 11 and the external lifting device to assist the second tension device 7 to improve the operation stability.

[0061] In the above embodiment, by setting symmetrically distributed third connection points 11 on the front and rear sides of the second connection point 6, and connecting the third connection point 11 and the hook 8 based on the third tension device 10, the force state between the external lifting device and the stator 1 can be assisted, avoiding tilting and deviation during the flipping of the stator 1, and further ensuring the stability of the flipping process.

[0062] In some embodiments, a plurality of supporting steel piers 12 are provided between the turnover support 2 and the turnover anchor 3 , and the plurality of supporting steel piers 12 are arranged in a ring and match the shape of the stator 1 .

[0063] In the above embodiment, a plurality of supporting steel piers 12 are arranged in a ring, so that the supporting steel piers 13 can effectively support the stator 1 after flipping.

[0064] In the above embodiment, the multiple supporting steel piers 12 are evenly arranged, which further ensures that the stator 1 after flipping is evenly stressed on the multiple supporting steel piers 12 .

[0065] In some embodiments, a wedge plate 13 is further included. The wedge plate 13 is located between the supporting steel pier 12 and the right end surface of the stator 1 to make the right end surface of the stator 1 in the horizontal state be in the same horizontal plane.

[0066] In the above embodiment, the wedge plate 13 can be used to adjust the distance between the right end face of the stator 1 after flipping and the corresponding supporting steel pier 12, thereby ensuring that the right end face of the stator 1 is always on the same horizontal plane in the horizontal state, providing protection for the subsequent storage and maintenance of the stator 1.

[0067] In some embodiments, a fixed shaft (not shown in the figure) is transversely arranged on the flip support 2, and a through hole (not shown in the figure) is provided on the stator 1 to match and hinge with the fixed shaft.

[0068] In the above embodiment, a fixed axis is laterally arranged on each flip support 2, and a through hole hingedly matched with the fixed axis is arranged on the stator 1. The stator 1 utilizes the through hole to be hingedly matched with the fixed axis to realize the stator 1 flipping along the flip support 2; when a flipping belly plate 9 is arranged on the stator 1, the through hole hingedly matched with the fixed axis should be arranged on the flipping belly plate 9, and the flipping belly plate 9 is fixedly connected to the stator 1, so that the stator 1 can be flipped along the flip support 2.

[0069] In other embodiments, an "n"-type connecting plate (or "π"-type connecting plate) may also be provided for connecting the flip support 2 and the stator 1, and a through hole rotatably connected to the fixed shaft is provided on the front and rear side plates of the "n"-type connecting plate (or "π"-type connecting plate), and the upper side plate of the "n"-type connecting plate (or "π"-type connecting plate) is fixedly connected to the stator 1 (or the flip belly plate 9) by bolts.

[0070] See also Figure 5 As shown, a method for turning over and hoisting the stator of a large and medium-sized horizontal hydro-turbine generator is also provided in the embodiment of the present application. The method is based on the above-mentioned large and medium-sized horizontal hydro-turbine generator stator turning over and hoisting device to perform stator turning over and hoisting, and comprises the following steps:

[0071] S100, hoisting the stator 1 to a designated position by using an external hoisting device so that the lower side of the right end of the stator 1 is hinged to the flip support 2, at which time, the external hoisting device is connected to the second connection point 6 at the upper end of the stator 1 through the second tension device 7;

[0072] S200, connecting the corresponding turning anchor 3 and the first connection point 4 through the first tension device 5, and then using at least two first tension devices 5 to synchronously pull the stator 1 to turn along the turning support 2 so that the center of gravity of the stator 1 shifts to the right, and in the pulling process, adjusting the tension of the corresponding first tension device 5 in real time according to the degree of rightward deviation of the front and rear sides of the right end surface of the stator 1;

[0073] S300, while the first tension device 5 is pulling the stator 1 to deflect to the right, the external lifting device is synchronously moved to the lower right so that the external lifting device and the stator 1 are always in a stressed state, until the right end surface of the stator 1 is parallel to the horizontal plane, thereby completing the flipping operation of the horizontal turbine generator stator 1 from the vertical state to the horizontal state.

[0074] In the above embodiment, first, the stator 1 to be flipped is hoisted to the specified position (i.e., the flipping operation site) by using an external hoisting device, and the lower side of the right end of the stator 1 is hinged to the flip support 2. At this time, the hook 8 on the external hoisting device is connected to the second connection point 6 by the second tension device 7, so that the hook 8 and the stator 1 are always in a stress state; then, the first tension device 5 is used to connect the corresponding flipping anchor 3 and the first connection point 4, and the stator 1 is synchronously pulled to flip along the flip support 2 through at least two first tension devices 5 to make the center of gravity of the stator 1 shift to the right. At the same time, the external hoisting device is moved to the lower right and ensured that the external hoisting device and the stator 1 are always in a stress state. In the process of the first tension device 5 pulling the stator 1 to shift to the right, it is necessary to observe in real time whether there is a displacement and misalignment phenomenon on the right end face of the stator 1. If so, the tension of the corresponding first tension device 5 is adjusted according to the actual situation. Specifically, when the right end of the stator 1 faces the front side, When it is offset, it means that the pulling speed of the first tension device 5 on the rear side is faster than that of the first tension device 5 on the front side. At this time, the tension of the first tension device 5 on the rear side is reduced or the tension of the first tension device 5 on the front side is increased to keep the front and rear sides of the right end face of the stator 1 consistent. Conversely, when the right end face of the stator 1 is offset to the rear, it means that the pulling speed of the first tension device 5 on the front side is faster than that of the first tension device 5 on the rear side. At this time, the tension of the first tension device 5 on the front side is reduced or the tension of the first tension device 5 on the rear side is increased to keep the front and rear sides of the right end face of the stator 1 consistent; until the right end face of the stator 1 is in a vertical state and placed on a plurality of supporting steel piers 12, the distance between the right end face of the stator 1 and the upper end face of the supporting steel pier 12 can be adjusted by the wedge block 13 so that each point on the right end face of the stator 1 is on the same horizontal plane (that is, the right end face of the stator 1 is parallel to the horizontal plane), thereby completing the flipping operation of the stator 1 of the horizontal turbine generator from a vertical state to a horizontal state.

[0075] It should be noted that, during the process of hoisting the stator 1 to the designated position and connecting it to the flip support 2 , a wooden block 14 needs to be placed under the end of the stator 1 away from the flip support 2 for support.

[0076] In some embodiments, the first tension device 5 and the second tension device 7 are both one of a manual chain hoist and an electric chain hoist.

[0077] In the above embodiment, the first tension device 5 and the second tension device 7 can both use a manual chain hoist or an electric chain hoist. The electric chain hoist can effectively reduce the labor intensity of the operator, while the manual chain hoist can accurately control the stator flipping process to further ensure operational safety.

[0078] The above is a detailed introduction to a large and medium-sized horizontal hydro-generator stator turning hoisting device and method provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A stator turning hoisting device for large and medium-sized horizontal hydro-turbine generators, characterized in that: include: At least two tilting supports (2), the at least two tilting supports (2) are both fixed on the ground and are respectively hinged to the lower side of the right end of the stator (1); At least two turning ground anchors (3), the at least two turning ground anchors (3) are both fixed on the ground, and the distance between the turning ground anchors (3) and the right end surface of the stator (1) is greater than the diameter of the stator (1); A first connection point (4), the first connection point (4) being located on the upper side of the right end of the stator (1) and correspondingly matching with the turning anchor (3); A first pulling device (5), the first pulling device (5) being respectively connected to the first connection point (4) and the corresponding turning anchor (3) so as to pull the stator (1) to rotate along the turning support (2); A second connection point (6) and a second tension device (7), wherein the second connection point (6) is located at the upper end of the stator (1), and the second tension device (7) is respectively connected to the second connection point (6) and the external lifting device so that the external lifting device and the stator (1) are always in a stressed state.

2. The stator turning and hoisting device for large and medium-sized horizontal hydro-generators according to claim 1 is characterized in that: The angle between the two tilting supports (2) that are farthest apart and the center line of the stator (1) has a value ranging from 40° to 60°.

3. The stator turning and hoisting device for large and medium-sized horizontal hydro-generators according to claim 2 is characterized in that: It also comprises a turning web (9) matching the curvature of the stator (1), wherein the turning web (9) is fixedly arranged on the lower side of the right end of the stator (1) for being hingedly connected to the turning support (2).

4. The stator turning and hoisting device for large and medium-sized horizontal hydro-generators according to claim 3 is characterized in that: It also includes a third tension device (10) and a third connection point (11) fixed on the upper side of the stator (1), the third connection point (11) being symmetrically arranged on the front and rear sides of the second connection point (6), and the third tension device (10) being respectively connected to the third connection point (11) and the external lifting device to assist the second tension device (7) to improve the operation stability.

5. The stator turning and hoisting device for large and medium-sized horizontal hydro-generators according to claim 4 is characterized in that: A plurality of supporting steel piers (12) are provided between the turnover support (2) and the turnover anchor (3); the plurality of supporting steel piers (12) are arranged in a ring and match the shape of the stator (1).

6. The stator turning and hoisting device for large and medium-sized horizontal hydro-generators according to claim 5 is characterized in that: The plurality of supporting steel piers (12) are evenly arranged.

7. The stator turning and hoisting device for large and medium-sized horizontal hydro-generators according to claim 6 is characterized in that: It also includes a wedge-shaped plate (13), which is located between the supporting steel pier (12) and the right end surface of the stator (1) and is used to make the right end surface of the stator (1) in the horizontal state be in the same horizontal plane.

8. The stator turning and hoisting device for large and medium-sized horizontal hydro-generators according to claim 7 is characterized in that: A fixed shaft is transversely arranged on the flip support (2), and a through hole is provided on the stator (1) and is hingedly matched with the fixed shaft.

9. A method for turning over and hoisting the stator of a large or medium-sized horizontal hydro-turbine generator, characterized in that: The method is based on the stator turning over and hoisting device for large and medium-sized horizontal hydro-turbine generators according to any one of claims 1 to 8, and comprises the following steps: S100, using an external lifting device to lift the stator (1) to a specified position so that the lower side of the right end of the stator (1) is hinged to the tilt support (2), at which time the external lifting device is connected to the second connection point (6) at the upper end of the stator (1) via a second tension device (7); S200, connecting the corresponding turning anchor (3) and the first connection point (4) through the first pulling device (5), then using at least two first pulling devices (5) to synchronously pull the stator (1) to turn along the turning support (2) so that the center of gravity of the stator (1) is shifted to the right, and during the pulling process, the pulling force of the corresponding first pulling device (5) is adjusted in real time according to the degree of rightward deviation of the front and rear sides of the right end surface of the stator (1); S300, while the first pulling device (5) is pulling the stator (1) to deflect to the right, the external lifting device is synchronously moved to the lower right so that the external lifting device and the stator (1) are always in a stressed state until the right end face of the stator (1) is parallel to the horizontal plane, thereby completing the flipping operation of the horizontal turbine generator stator (1) from a vertical state to a horizontal state.

10. The method for turning over and hoisting the stator of a large and medium-sized horizontal hydro-turbine generator according to claim 9, characterized in that: The first pulling device (5) and the second pulling device (7) are both one of a manual chain hoist and an electric chain hoist.

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