Auxiliary tool for centering coupling of steam turbine and generator

Abstract

The utility model belongs to the technical field of measuring tools, and discloses a steam turbine and generator coupling centering auxiliary tool which comprises a connecting rod body, a mounting rod body, an axial dial indicator and a radial dial indicator, one end of the connecting rod body is connected with a generator coupling through a first connecting piece, one end of the mounting rod body is connected with the connecting rod body, and the other end of the mounting rod body is connected with a second connecting piece. The other end of the mounting rod body extends to the periphery of the steam turbine coupling from the end part of the steam turbine coupling so as to extend into the gap between the steam turbine coupling and the box body, and the axial dial indicator and the radial dial indicator are arranged on the mounting rod body. According to the turbine and generator coupling centering auxiliary tool, the connecting rod body is mounted on the generator coupling through the first connecting piece, and the end, away from the connecting rod body, of the mounting rod body extends to the turbine coupling; the axial dial indicator and the radial dial indicator which are installed on the installation rod body can directly measure the positions of the turbine coupling relative to the axial direction and the radial direction of the generator coupling, the structure is simple, and the measurement accuracy is high.

Description

Technical Field

[0001] This utility model relates to the field of measuring tooling technology, and in particular to an auxiliary tooling for centering a steam turbine and generator coupling. Background Technology

[0002] The steam turbine is designed for combined cycle units and improves the thermal efficiency of the entire system by recovering waste heat from the power generation process. It performs particularly well in some industrial production processes that require large amounts of heat and electricity.

[0003] In related technologies, combined cycle steam turbines have a compact structure and use couplings to connect the steam turbine and generator into a shaft system. During installation, precise alignment and centering are required to ensure that the gap between moving and stationary parts is within the specified range during operation, thereby preventing abnormal vibration caused by friction during operation.

[0004] In actual operation, because the turbine generator set and the generator coupling are installed inside the bearing housing, the gap between the inner wall of the housing and the turbine coupling is narrow, making it difficult to set up a universal dial indicator mounting base. An unstable dial indicator mounting base is prone to shaking, which leads to deviations in the measurement data.

[0005] Therefore, there is an urgent need to design a new auxiliary tooling for centering the turbine and generator coupling to improve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide an auxiliary tooling for centering a turbine and generator coupling, in order to solve the technical problem that it is difficult to set up a universal dial indicator mounting base, and the dial indicator mounting base is unstable and prone to shaking, which leads to deviations in the measurement data.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] The auxiliary tooling for centering the turbine and generator coupling provided by this utility model includes:

[0009] A connecting rod body, one end of which is connected to the generator coupling via a first connecting member, and the other end of which extends along the axial direction of the generator coupling toward the turbine coupling to the end of the turbine coupling;

[0010] The mounting rod has one end connected to one end of the connecting rod located at the end of the turbine coupling, and the other end extends from the end of the turbine coupling to the outer periphery of the turbine coupling to insert into the gap between the turbine coupling and the housing.

[0011] An axial dial indicator and a radial dial indicator are mounted on the mounting rod to detect the axial and radial positions of the turbine coupling relative to the generator coupling.

[0012] The connecting rod is installed on the generator coupling via the first connecting piece. The end of the mounting rod away from the connecting rod extends to the turbine coupling. The axial and radial dial indicators installed on the mounting rod can directly measure the position of the turbine coupling relative to the generator coupling in the axial and radial directions. There is no need to build a dial indicator mounting base. The structure is simple and the measurement accuracy is high.

[0013] As a preferred embodiment of the auxiliary tooling for centering the turbine-generator coupling, both the connecting rod and the mounting rod are L-shaped.

[0014] Operators can install the connecting rod to the generator coupling from the end face of the generator coupling away from the turbine coupling, providing ample operating space and facilitating installation.

[0015] As a preferred embodiment of the auxiliary tooling for centering the turbine-generator coupling, the connecting rod body includes a first connecting rod and a second connecting rod, with one end of the first connecting rod perpendicularly connected to one end of the second connecting rod.

[0016] As a preferred embodiment of the auxiliary tooling for centering the turbine and generator coupling, the first connecting member includes a first fixing screw, and the first connecting rod has a mounting hole, through which the first fixing screw passes and connects to the generator coupling.

[0017] The shank of the first fixing screw is passed through the mounting hole and threaded onto the generator coupling until the head of the first fixing screw is pressed against the end face of the generator coupling. The structure is simple and easy to install and remove.

[0018] As a preferred embodiment of the auxiliary tooling for centering the turbine-generator coupling, the mounting rod includes a first mounting rod and a second mounting rod. One end of the first mounting rod is perpendicularly connected to one end of the second mounting rod, and the other end is perpendicularly connected to the end of the second connecting rod away from the first connecting rod. At least the diameter of the second mounting rod is smaller than the gap between the turbine coupling and the housing.

[0019] Ensure that the second mounting rod can be inserted into the narrow gap between the turbine coupling and the housing.

[0020] As a preferred embodiment of the auxiliary tooling for centering the turbine and generator coupling, the first connecting rod, the second connecting rod, the first mounting rod, and the second mounting rod are integrally formed.

[0021] The one-piece molded structure has good integrity and is not prone to deformation.

[0022] As a preferred solution for the auxiliary tooling for centering the turbine and generator coupling, any two adjacent first connecting rods, second connecting rods, first mounting rods and second mounting rods are detachably connected.

[0023] By selecting first connecting rods, second connecting rods, first mounting rods and second mounting rods of different lengths and connecting them together, it can adapt to couplings of different diameters and thicknesses, and has good versatility.

[0024] As a preferred embodiment of the auxiliary tooling for centering the turbine-generator coupling, the first connecting rod and the first mounting rod are provided with threaded holes at both ends, and the second connecting rod and the second mounting rod are provided with threaded rods on the periphery of their ends.

[0025] The threaded connection between the threaded rod and the threaded hole allows for convenient and quick connection between adjacent rods, making installation and disassembly easy.

[0026] As a preferred embodiment of the auxiliary tooling for centering the turbine-generator coupling, the first mounting rod and the second mounting rod are provided with an adjustment groove extending along the length direction through the radial direction. The axial dial indicator and the radial dial indicator are provided with a second connecting member. The axial dial indicator is mounted on the first mounting rod through the second connecting member, and the radial dial indicator is mounted on the second mounting rod through the second connecting member.

[0027] The axial and radial dial indicators are detachably mounted in the adjustment groove via the second mounting rod, facilitating the inspection and replacement of the axial and radial dial indicators. In addition, the installation position of the second mounting rod in the adjustment groove can be adjusted according to couplings of different diameters and thicknesses, further improving the versatility of the auxiliary tooling.

[0028] As a preferred embodiment of the auxiliary tooling for centering the turbine and generator coupling, the second connecting member includes a second fixing screw and a nut. The head of the second fixing screw is connected to the axial dial indicator or the radial dial indicator. The shank of the second fixing screw passes through the adjusting groove. The nut is threadedly connected to the second fixing screw and abuts against the periphery of the first mounting rod or the second mounting rod.

[0029] Connect the head of the second fixing screw to an axial or radial dial indicator. Pass the shank of the second fixing screw through the adjustment groove. Tighten the nut on the protruding end of the second fixing screw until the nut and the axial or radial dial indicator are tightly against the periphery of the first or second mounting rod. The structure is simple and easy to install and disassemble.

[0030] The beneficial effects of this utility model are:

[0031] The connecting rod is installed on the generator coupling via the first connecting piece. The end of the mounting rod away from the connecting rod extends to the turbine coupling. The axial and radial dial indicators installed on the mounting rod can directly measure the position of the turbine coupling relative to the generator coupling in the axial and radial directions. There is no need to build a dial indicator mounting base. The structure is simple and the measurement accuracy is high. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the auxiliary tooling for centering the turbine and generator coupling provided in Embodiment 1 of this utility model;

[0033] Figure 2 This is a cross-sectional view of the auxiliary tooling for centering the turbine and generator coupling provided in Embodiment 2 of this utility model;

[0034] Figure 3 This is a front view of the auxiliary tooling for centering the turbine and generator coupling provided in Embodiment 3 of this utility model;

[0035] Figure 4 This is a side view of the auxiliary tooling for centering the turbine and generator coupling provided in Embodiment 3 of this utility model.

[0036] In the picture:

[0037] 100. Generator coupling; 200. Steam turbine coupling;

[0038] 1. Connecting rod body; 11. First connecting rod; 12. Second connecting rod; 2. Mounting rod body; 21. First mounting rod; 22. Second mounting rod; 3. Axial dial indicator; 4. Radial dial indicator; 5. First fixing screw; 51. Mounting hole; 6. Second fixing screw; 61. Nut; 7. Threaded rod; 71. Threaded hole; 8. Adjustment groove. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] Example 1:

[0044] In related technologies, combined cycle steam turbines have a compact structure and use couplings to connect the turbine and generator into a single shaft system. Precise alignment and centering are crucial during installation to ensure that the clearance between moving and stationary parts remains within specified limits during operation, preventing abnormal vibrations caused by friction. In actual operation, because the turbine-generator set and generator coupling are installed inside a bearing housing, the clearance between the inner wall of the housing and the turbine coupling is very narrow, only 78mm. This makes it difficult to set up a universal dial indicator mounting base, and an unstable mounting base can easily cause wobbling, leading to deviations in the measurement data.

[0045] To solve the above problems, such as Figure 1As shown, this embodiment provides an auxiliary tooling for centering a turbine-generator coupling, including a connecting rod 1, a mounting rod 2, an axial dial indicator 3, and a radial dial indicator 4. One end of the connecting rod 1 is connected to the generator coupling 100 via a first connecting member, and the other end of the connecting rod 1 extends along the axial direction of the generator coupling 100 toward the turbine coupling 200 to its end. One end of the mounting rod 2 is connected to one end of the connecting rod 1 located at the end of the turbine coupling 200, and the other end of the mounting rod 2 extends from the end of the turbine coupling 200 to the outer periphery of the turbine coupling 200, so as to extend into the gap between the turbine coupling 200 and the housing. The axial dial indicator 3 and the radial dial indicator 4 are mounted on the mounting rod 2 to detect the axial and radial positions of the turbine coupling 200 relative to the generator coupling 100.

[0046] The connecting rod 1 is installed on the generator coupling 100 through the first connecting member. The end of the mounting rod 2 away from the connecting rod 1 extends to the turbine coupling 200. The axial dial indicator 3 and radial dial indicator 4 installed on the mounting rod 2 can directly measure the position of the turbine coupling 200 relative to the generator coupling 100 in the axial and radial directions without the need to build a dial indicator mounting base. The structure is simple and the measurement accuracy is high.

[0047] Preferably, in this embodiment, both the connecting rod 1 and the mounting rod 2 are L-shaped. The operator can install the connecting rod 1 to the generator coupling 100 from the end face of the generator coupling 100 away from the turbine coupling 200, providing ample operating space and facilitating installation. In other embodiments, the connecting rod 1 and the mounting rod 2 can also be T-shaped, I-shaped, etc., and this embodiment does not specifically limit them.

[0048] Specifically, see [link to relevant documentation] Figure 1 The connecting rod body 1 includes a first connecting rod 11 and a second connecting rod 12, with one end of the first connecting rod 11 perpendicularly connected to one end of the second connecting rod 12. The mounting rod body 2 includes a first mounting rod 21 and a second mounting rod 22, with one end of the first mounting rod 21 perpendicularly connected to one end of the second mounting rod 22, and the other end of the first mounting rod 21 perpendicularly connected to the end of the second connecting rod 12 away from the first connecting rod 11, forming a "W"-shaped auxiliary tooling. At least the diameter of the second mounting rod 22 is smaller than the gap between the turbine coupling 200 and the housing, ensuring that the second mounting rod 22 can extend into the narrow gap between the turbine coupling 200 and the housing.

[0049] The first connecting component in this embodiment includes a first fixing screw 5. A mounting hole 51 is provided on the first connecting rod 11. The first fixing screw 5 passes through the mounting hole 51 and connects to the generator coupling 100. Preferably, the mounting hole 51 is a round hole; in other embodiments, it can also be a threaded hole. The shank of the first fixing screw 5 passes through the mounting hole 51 and is threaded onto the generator coupling 100 until the head of the first fixing screw 5 is firmly against the end face of the generator coupling 100. The structure is simple and easy to install and remove.

[0050] In this embodiment, the first connecting rod 11, the second connecting rod 12, the first mounting rod 21, and the second mounting rod 22 are integrally formed. The integrally formed structure has good integrity and is not prone to deformation. Furthermore, the axial dial indicator 3 is fixedly connected to the first mounting rod 21, and the radial dial indicator 4 is fixedly connected to the second mounting rod 22, ensuring strong connection and high measurement accuracy.

[0051] Example 2:

[0052] The other structures in this embodiment are the same as in Embodiment 1, except that the first connecting rod 11, the second connecting rod 12, the first mounting rod 21, and the second mounting rod 22 are all detachably connected. Specifically, as shown... Figure 2 As shown, the first connecting rod 11 and the first mounting rod 21 are provided with threaded holes 71 at both ends, and the second connecting rod 12 and the second mounting rod 22 are provided with threaded rods 7 on their circumferential sides. The threaded rods 7 and the threaded holes 71 are threaded together, which can facilitate the connection between adjacent rods, making installation and disassembly convenient. By selecting first connecting rods 11, second connecting rods 12, first mounting rods 21 and second mounting rods 22 of different lengths, couplings of different diameters and thicknesses can be connected, providing good versatility.

[0053] Example 3:

[0054] The other structures in this embodiment are the same as in Embodiment 1 or Embodiment 2, except that the axial dial indicator 3 and the first mounting rod 21, as well as the radial dial indicator 4 and the second mounting rod 22, are detachably connected. Specifically, as shown... Figure 3 and Figure 4 As shown, the first mounting rod 21 and the second mounting rod 22 are radially connected and have an adjustment groove 8 extending along the length direction. The axial dial indicator 3 and the radial dial indicator 4 are provided with second connecting parts. The axial dial indicator 3 is mounted on the first mounting rod 21 through the second connecting parts, and the radial dial indicator 4 is mounted on the second mounting rod 22 through the second connecting parts. The axial dial indicator 3 and the radial dial indicator 4 are detachably mounted in the adjustment groove 8 through the second mounting rod 22, which facilitates the maintenance and replacement of the axial dial indicator 3 and the radial dial indicator 4. In addition, the installation position of the second mounting rod 22 in the adjustment groove 8 can be adjusted according to the couplings of different diameters and thicknesses, which further improves the versatility of the auxiliary tooling.

[0055] More specifically, the second connecting member includes a second fixing screw 6 and a nut 61. The head of the second fixing screw 6 is connected to the axial dial indicator 3 or the radial dial indicator 4. The shank of the second fixing screw 6 passes through the adjusting groove 8. The nut 61 is threaded to the second fixing screw 6 and abuts against the periphery of the first mounting rod 21 or the second mounting rod 22. The head of the second fixing screw 6 is connected to the axial dial indicator 3 or the radial dial indicator 4. The shank of the second fixing screw 6 passes through the adjusting groove 8. The nut 61 is screwed onto the protruding end of the second fixing screw 6 until the nut 61 and the axial dial indicator 3 or the radial dial indicator 4 are tightly abutted against the periphery of the first mounting rod 21 or the second mounting rod 22. The structure is simple and easy to install and disassemble.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An auxiliary tooling for centering a turbine-generator coupling, characterized in that, include: A connecting rod (1) is provided, one end of which is connected to the generator coupling (100) via a first connecting member, and the other end extends along the axial direction of the generator coupling (100) toward the turbine coupling (200) to the end of the turbine coupling (200). Mounting rod (2), one end of which is connected to one end of the connecting rod (1) located at the end of the turbine coupling (200), and the other end extends from the end of the turbine coupling (200) to the outer periphery of the turbine coupling (200) to extend into the gap between the turbine coupling (200) and the housing; An axial dial indicator (3) and a radial dial indicator (4) are mounted on the mounting rod (2) to detect the axial and radial positions of the turbine coupling (200) relative to the generator coupling (100).

2. The auxiliary tooling for centering the turbine and generator coupling according to claim 1, characterized in that, Both the connecting rod (1) and the mounting rod (2) are L-shaped.

3. The auxiliary tooling for centering the turbine and generator coupling according to claim 2, characterized in that, The connecting rod body (1) includes a first connecting rod (11) and a second connecting rod (12), with one end of the first connecting rod (11) perpendicularly connected to one end of the second connecting rod (12).

4. The auxiliary tooling for centering the turbine and generator coupling according to claim 3, characterized in that, The first connector includes a first fixing screw (5), and the first connecting rod (11) has a mounting hole (51). The first fixing screw (5) passes through the mounting hole (51) and is connected to the generator coupling (100).

5. The auxiliary tooling for centering the turbine and generator coupling according to claim 3, characterized in that, The mounting rod body (2) includes a first mounting rod (21) and a second mounting rod (22). One end of the first mounting rod (21) is perpendicularly connected to one end of the second mounting rod (22), and the other end is perpendicularly connected to the end of the second connecting rod (12) away from the first connecting rod (11). At least the diameter of the second mounting rod (22) is smaller than the gap between the turbine coupling (200) and the housing.

6. The auxiliary tooling for centering the turbine and generator coupling according to claim 5, characterized in that, The first connecting rod (11), the second connecting rod (12), the first mounting rod (21) and the second mounting rod (22) are integrally formed.

7. The auxiliary tooling for centering the turbine and generator coupling according to claim 5, characterized in that, Any two adjacent first connecting rods (11), second connecting rods (12), first mounting rods (21) and second mounting rods (22) are detachably connected.

8. The auxiliary tooling for centering the turbine and generator coupling according to claim 7, characterized in that, The first connecting rod (11) and the first mounting rod (21) are provided with screw holes (71) at both ends, and the second connecting rod (12) and the second mounting rod (22) are provided with threaded rods (7) on the periphery of their ends.

9. The auxiliary tooling for centering the turbine-generator coupling according to claim 6 or 7, characterized in that, The first mounting rod (21) and the second mounting rod (22) are provided with an adjustment groove (8) extending along the length direction through the radial direction. The axial dial indicator (3) and the radial dial indicator (4) are provided with a second connecting member. The axial dial indicator (3) is mounted on the first mounting rod (21) through the second connecting member, and the radial dial indicator (4) is mounted on the second mounting rod (22) through the second connecting member.

10. The auxiliary tooling for centering the turbine and generator coupling according to claim 9, characterized in that, The second connector includes a second fixing screw (6) and a nut (61). The head of the second fixing screw (6) is connected to the axial dial indicator (3) or the radial dial indicator (4). The shank of the second fixing screw (6) passes through the adjustment groove (8). The nut (61) is threadedly connected to the second fixing screw (6) and abuts against the periphery of the first mounting rod (21) or the second mounting rod (22).

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