Adjustable hydro-generator stator positioning rib chord distance detection ruler

Abstract

The utility model discloses an adjustable hydro-generator stator positioning rib chord distance detection ruler, which belongs to the technical field of hydro-generator stator positioning ribs and comprises a positioning rib chord distance detection ruler assembly. The movable chord distance moving assembly comprises a bottom plate piece directly connected to the top face of the chord distance measuring sample plate piece in a sliding mode, a dial indicator installed on the top face of the bottom plate piece, a movable chord distance sample plate measuring head installed at one end of the bottom plate piece, and a pushing sliding plate block connected to the side face of the chord distance measuring sample plate piece in a sliding mode and used for pushing and pulling the bottom plate piece to move linearly. The top surface of one end of the chord distance measuring sample plate piece is integrally connected with a fixed clamping plate head, the inner wall of the fixed clamping plate head is matched with a first positioning rib, and the top surface of the other end of the chord distance measuring sample plate piece and the outer wall of the movable chord distance sample plate measuring head are matched and contacted with a second positioning rib. According to the utility model, the adjustment amount can be visually seen, and errors caused by misoperation are reduced, so that the problem that the chord distance variable of the dovetail rib is larger after welding is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of the stator locating ribs of hydro-generators, in particular to a chord distance detector for the stator locating ribs of an adjustable hydro-generator. Background Technique

[0002] During the manufacturing process of hydro-generators, the chord distance of the stator locating ribs is an important parameter, which directly affects the overall performance and operating efficiency of the hydro-generator. The traditional chord distance measurement method usually relies on manual measurement using conventional measuring tools such as straight rulers and vernier calipers. This method has the following problems and deficiencies:

[0003] When adjusting the small equal chord distances, it is necessary to use the standard chord distance template provided by the manufacturer for adjustment. During the adjustment process, experience and feel are often required, and the adjustment amount cannot be intuitively seen. There is often an error of (0.05mm ± 0.10mm) between them. The adjustment of the dove-tail ribs itself is a relatively precise job, and this error will cause a greater change in the chord distance of the dove-tail ribs after welding, and at the same time, it can lead to inaccurate measurement results.

[0004] After retrieval, for example, the existing Chinese patent publication number: CN203964800U, a locating rib detection device, includes a horizontal base plate. Adjusting long grooves are symmetrically opened at both ends of the base plate. The adjusting long grooves are through grooves. The upper end surface of the base plate is marked with dimension scale lines for adjusting the length dimension of the chord distance detection template. Positioning pins are respectively installed in the through grooves. In addition, there are two angle positioning plates for adjusting the angle of the chord distance detection template.

[0005] The cited patent document also has the same problem. During the adjustment process, experience and feel are often required, and the adjustment amount cannot be intuitively seen. There is often an error of (0.05mm ± 0.10mm) between them. The adjustment of the dove-tail ribs itself is a relatively precise job, and this error will cause a greater change in the chord distance of the dove-tail ribs after welding, and at the same time, it can lead to inaccurate measurement results. Content of the Utility Model

[0006] The purpose of the utility model is to provide a chord distance detector for the stator locating ribs of an adjustable hydro-generator to solve the problems raised in the background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A chord distance detector for the stator locating ribs of an adjustable hydro-generator, including:

[0008] A locating rib chord distance detector assembly for measuring the chord distance of the stator locating ribs of a hydro-generator, and the locating rib chord distance detector assembly includes a chord distance measurement template part;

[0009] The movable string distance moving component is slidably connected to the string distance measuring template. The movable string distance moving component includes a bottom plate directly slidably connected to the top surface of the string distance measuring template, a dial indicator installed on the top surface of the bottom plate, a movable string distance template measuring head installed at one end of the bottom plate, and a pushing sliding block slidably connected to the side surface of the string distance measuring template for pushing and pulling the bottom plate to move linearly.

[0010] Among them, a fixed clamping head is integrally connected to the top surface of one end of the string distance measuring template. A first positioning rib is fitted to the inner wall of the fixed clamping head. A second positioning rib is fitted to and in contact with the outer wall of the movable string distance template measuring head on the top surface of the other end of the string distance measuring template. By moving the movable string distance template measuring head, the string distance between the first positioning rib and the second positioning rib can be measured, and the adjustment amount can be visually seen, reducing the problem that the string distance variable of the dovetail rib after welding will be larger due to errors.

[0011] Preferably in this solution, a second chute is horizontally opened on the top surface of the string distance measuring template on the side away from the fixed clamping head, and a first chute is horizontally opened on the outer wall of one side of the string distance measuring template.

[0012] The first chute penetrates into the second chute.

[0013] Preferably in this solution, a longitudinal slider inserted into the second chute is fixedly installed at the middle position of the bottom surface of the bottom plate. A transverse slider inserted into the first chute is fixed to the inner wall of the pushing sliding block, and the free end of the transverse slider is connected to the outer wall of the longitudinal slider.

[0014] Preferably in this solution, a threaded counterbore is horizontally opened on the outer wall of one side of the pushing sliding block, and the threaded counterbore penetrates into the transverse slider. The threaded counterbore is connected to the longitudinal slider through a first locking bolt.

[0015] Preferably in this solution, when the first locking bolt is installed in the threaded counterbore, a rubber gasket is embedded in the threaded counterbore, and the inner wall of the rubber gasket abuts against the outer wall of the nut of the first locking bolt.

[0016] Preferably in this solution, a clamping plate is integrally connected to the bottom end of the pushing sliding block. The inner wall of the clamping plate is in sliding friction contact with the bottom surface of the string distance measuring template, and the clamping plate is dynamically connected to the string distance measuring template through a second locking bolt.

[0017] Preferably in this solution, balancing limiting edge plates are symmetrically welded on both sides of the upper and lower ends of the longitudinal slider. The outer wall of the balancing limiting edge plate is in sliding friction contact with the inner wall of the second chute. When the longitudinal slider slides in the second chute, it can move with balanced limitation under the support of the balancing limiting edge plate, preventing the longitudinal slider from tilting, misaligning and jamming during sliding.

[0018] Preferably, a detachable end plate is installed at one end of the chord distance measurement template away from the fixed clamping head through a detachable bolt, and a handle is installed on the outer wall of the fixed clamping head.

[0019] Compared with the prior art, the technical effects and advantages of the present utility model are as follows:

[0020] The adjustable chord distance detector for the stator positioning ribs of a hydrogenerator integrates all key components to form a complete measurement system, enabling the operator to complete all necessary measurement steps in a compact structure. Through the design of the movable chord distance moving component, especially the combination of the bottom plate and the dial indicator, accurate measurement of the chord distance is ensured. Through the design of the fixed clamping head and the movable chord distance template measuring head, the operator can quickly fix and measure the chord distance of the positioning ribs, simplifying the measurement process.

[0021] By moving the movable chord distance template measuring head, the chord distance between the first positioning rib and the second positioning rib can be measured, and the adjustment amount can be visually seen, reducing errors caused by improper operation, thereby avoiding the problem of a larger chord distance variation of the dove-tail ribs after welding.

[0022] This technical solution not only improves the measurement accuracy and stability but also greatly enhances the operation convenience and equipment maintainability, and is very suitable for accurately measuring the chord distance of the stator positioning ribs of a hydrogenerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 is a schematic structural diagram of the present utility model;

[0025] Figure 2 is a schematic structural diagram of the disassembly state of the pushing slider block of the present utility model;

[0026] Figure 3 is a schematic structural diagram of the pushing slider block of the present utility model;

[0027] Figure 4 is a schematic structural diagram of the connection structure of the longitudinal slider of the present utility model;

[0028] Figure 5This is a schematic diagram of the installation structure of the balance limit edge plate of the present utility model.

[0029] Explanation of reference numerals:

[0030] In the figure: 1. Total assembly of positioning rib chord distance detection ruler; 2. Chord distance measurement template part; 3. Fixed clamping plate head; 4. Handle; 5. Movable chord distance template measurement head; 6. Dial indicator; 7. First chute; 8. Second chute; 9. Pushing slide block; 10. Detachable end plate; 11. First positioning rib; 12. Second positioning rib; 13. Movable chord distance moving assembly; 14. Detachable bolt; 15. Bottom plate part; 16. First locking bolt; 17. Transverse slider; 18. Threaded counterbore; 19. Rubber gasket plate; 20. Clamping support plate; 21. Second locking bolt; 22. Longitudinal slider; 23. Balance limit edge plate. Specific implementation manners

[0031] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present utility model, some well-known technical features in the art are not described.

[0032] Unless otherwise defined, the up, down, left, right, front, back, inner and outer directions involved in this article are based on the up, down, left, right, front, back, inner and outer directions in the figure shown by the present utility model, and are hereby explained together.

[0033] This embodiment provides an adjustable stator positioning rib chord distance detection ruler as shown in Figures 1 to 5 the figure, which includes: a total assembly of positioning rib chord distance detection ruler 1, a chord distance measurement template part 2, and a movable chord distance moving assembly 13.

[0034] In this embodiment, the total assembly of positioning rib chord distance detection ruler 1 is used to measure the chord distance of the stator positioning ribs of the hydrogenerator, and the total assembly of positioning rib chord distance detection ruler 1 includes a chord distance measurement template part 2; the chord distance measurement template part 2 serves as the basic framework of the detection ruler, is used to support other components, and provides a reference plane for measurement.

[0035] In this embodiment, the movable string distance moving component 13 is slidably connected to the string distance measuring template 2. The movable string distance moving component 13 includes a bottom plate member 15 directly slidably connected to the top surface of the string distance measuring template 2, a dial indicator 6 installed on the top surface of the bottom plate member 15, a movable string distance template measuring head 5 installed at one end of the bottom plate member 15, and a pushing sliding block 9 slidably connected to the side surface of the string distance measuring template 2 for pushing and pulling the bottom plate member 15 to move linearly. The bottom plate member 15 is slidably connected to the top surface of the string distance measuring template 2 and can move thereon to change the measuring position. The dial indicator 6 is installed on the top surface of the bottom plate member 15 for reading the specific value of the string distance. The movable string distance template measuring head 5 is installed at one end of the bottom plate member 15 and is used in cooperation with the second positioning rib 12 to determine the string distance. The pushing sliding block 9 is installed on the side surface of the string distance measuring template 2 for pushing the bottom plate member 15 to move linearly along the string distance measuring template 2.

[0036] In this embodiment, a fixed clamping head 3 is integrally connected to the top surface of one end of the string distance measuring template 2. The fixed clamping head 3 is located at one end of the string distance measuring template 2 and is used to fix the position of the inspection ruler. And a first positioning rib 11 is fitted to the inner wall to ensure the stability of the inspection ruler. The first positioning rib 11 is fitted to the inner wall of the fixed clamping head 3. At the top surface of the other end of the string distance measuring template 2 and in contact with the outer wall of the movable string distance template measuring head 5, there is a second positioning rib 12. By moving the movable string distance template measuring head 5, the string distance between the first positioning rib 11 and the second positioning rib 12 can be measured, and the adjustment amount can be visually seen, reducing the problem that the variable of the dovetail rib string distance after welding will be larger due to errors.

[0037] In this embodiment, a second chute 8 is horizontally opened on the top surface of the string distance measuring template 2 and away from the fixed clamping head 3, and a first chute 7 is horizontally opened on the outer wall of one side of the string distance measuring template 2. The first chute 7 penetrates into the second chute 8. The first chute 7 and the second chute 8 are respectively horizontally opened on the outer wall and the top surface of the string distance measuring template 2 for guiding the movement of the slider.

[0038] In this embodiment, a longitudinal slider 22 inserted into the second chute 8 is fixedly installed at the middle position of the bottom surface of the bottom plate member 15. A transverse slider 17 inserted into the first chute 7 is fixed to the inner wall of the pushing sliding block 9. The free end of the transverse slider 17 is connected to the outer wall of the longitudinal slider 22. A threaded counterbore 18 is horizontally opened on the outer wall of one side of the pushing sliding block 9 and penetrates into the transverse slider 17. The threaded counterbore 18 is connected to the longitudinal slider 22 through a first locking bolt 16. The transverse slider 17 and the longitudinal slider 22 are respectively inserted into the first chute 7 and the second chute 8 to ensure the smooth movement of the pushing sliding block 9 and the bottom plate member 15.

[0039] In this embodiment, when the first locking bolt 16 is installed into the threaded counterbore 18, a rubber gasket plate 19 is embedded in the threaded counterbore 18, and the inner wall of the rubber gasket plate 19 abuts against the outer wall of the nut of the first locking bolt 16. The first locking bolt 16 passes through the threaded counterbore 18 and is connected to the longitudinal slider 22 to ensure the stability of the pushing slider plate 9. The rubber gasket plate 19 is placed between the nut of the first locking bolt 16 and the pushing slider plate 9 to provide additional friction and prevent loosening.

[0040] In this embodiment, a retaining plate 20 is integrally connected to the bottom end of the pushing slider plate 9. The inner wall of the retaining plate 20 is in sliding friction contact with the bottom surface of the chord distance measuring template 2. The retaining plate 20 is dynamically connected to the chord distance measuring template 2 through a second locking bolt 21. The retaining plate 20 is installed at the bottom of the pushing slider plate 9 and contacts the bottom surface of the chord distance measuring template 2 to increase the stability of the pushing slider plate 9. The second locking bolt 21 is used to connect the retaining plate 20 and the chord distance measuring template 2 to ensure the dynamic connection between the two.

[0041] In this embodiment, balance limiting edge plates 23 are symmetrically welded to both sides of the upper and lower ends of the longitudinal slider 22. The outer wall of the balance limiting edge plates 23 is in sliding friction contact with the inner wall of the second chute 8. When the longitudinal slider 22 slides in the second chute 8, the balance limiting edge plates 23 can support the longitudinal slider 22 to move with balance limiting to prevent the longitudinal slider 22 from tilting, misaligning, or jamming during sliding. The balance limiting edge plates 23 are welded to both sides of the upper and lower ends of the longitudinal slider 22 and contact the inner wall of the second chute 8 to prevent the longitudinal slider 22 from skewing or jamming during the sliding process.

[0042] In this embodiment, a detachable end plate 10 is installed at one end of the chord distance measuring template 2 away from the fixed clamping head 3 through a detachable bolt 14, and a handle 4 is installed on the outer wall of the fixed clamping head 3. Installing through the detachable bolt 14 at one end of the chord distance measuring template 2 away from the fixed clamping head 3 facilitates disassembly and assembly. The handle 4 is installed on the outer wall of the fixed clamping head 3 to facilitate the operator to hold the inspection ruler.

[0043] Working principle:

[0044] For this adjustable chord distance inspection ruler for the stator positioning bars of a hydrogenerator, first ensure that all components of the chord distance inspection ruler assembly 1 are correctly installed. Check whether the handle 4, the fixed clamping head 3, the chord distance measuring template 2, the movable chord distance moving assembly 13, etc. are installed in place. Before formal measurement, the dial indicator 6 should be calibrated with a standard part to ensure the accuracy of its measured value.

[0045] Place the stator locating bars of the hydro-generator on the top surface of the chord distance measuring template 2 to ensure that the locating bars to be measured are within the operating range of the inspection ruler. Fix the inspection ruler on one side of the locating bar to be measured through the fixed clamping head 3, and ensure that the first locating bar 11 is in close contact with the locating bar to be measured. At this time, the fixed clamping head 3 plays a role in fixing the position of the inspection ruler. Use the detachable bolt 14 to adjust and fix the detachable end plate 10 to ensure that its position is suitable for the measurement operation. Move the bottom plate member 15 by pushing the sliding block 9 to make the movable chord distance template measuring head 5 approach the other side of the locating bar to be measured. The transverse slider 17 and the longitudinal slider 22 slide in the first chute 7 and the second chute 8 respectively to ensure the smooth movement of the bottom plate member 15. The balance limit edge plate 23 contacts the inner wall of the second chute 8 to prevent the longitudinal slider 22 from tilting or jamming during the sliding process.

[0046] When the movable chord distance template measuring head 5 reaches the specified position, ensure that it is in good contact with the second locating bar 12. Check the reading on the dial indicator 6 and record the chord distance between the first locating bar 11 and the second locating bar 12. Use the first locking bolt 16 to pass through the threaded counterbore 18 to lock the transverse slider 17 and the longitudinal slider 22 to prevent movement during the reading process. The rubber cushion plate 19 is placed between the nut of the first locking bolt 16 and the pushing slider 9 to provide additional friction to prevent the locking bolt from loosening. The clamping plate 20 is installed at the bottom of the pushing slider 9 and fixed to the chord distance measuring template 2 through the second locking bolt 21 to ensure the stability of the pushing slider 9.

[0047] Record the value shown on the dial indicator 6, which is the chord distance between the two locating bars. If multiple chord distances need to be measured, repeat the above steps until all the measurement point data are recorded.

[0048] After the measurement is completed, disassemble each component in turn, store them properly, and clean the dust and impurities on the inspection ruler to ensure that the equipment is in good condition before the next use.

[0049] It should be noted that in this article, relative terms such as "one" and "two" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent in such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0050] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. Adjustable stator locating rib chord distance detector for hydrogenerator, characterized in that Comprising: A positioning rib chord distance measuring ruler assembly (1) for measuring the chord distance of the stator positioning ribs of a hydrogenerator, and the positioning rib chord distance measuring ruler assembly (1) includes a chord distance measuring template member (2); A movable chord distance moving assembly (13) slidably connected to the chord distance measuring template member (2), the movable chord distance moving assembly (13) includes a bottom plate member (15) directly slidably connected to the top surface of the chord distance measuring template member (2), a dial indicator (6) installed on the top surface of the bottom plate member (15), a movable chord distance template measuring head (5) installed at one end of the bottom plate member (15), and a pushing slide block (9) slidably connected to the side wall of the chord distance measuring template member (2) for pushing and pulling the bottom plate member (15) to move linearly; Wherein, a fixed clamping plate head (3) is integrally connected to the top surface of one end of the chord distance measuring template member (2), the inner wall of the fixed clamping plate head (3) fits with a first positioning rib (11), and the top surface of the other end of the chord distance measuring template member (2) and the outer wall of the movable chord distance template measuring head (5) are in fitting contact with a second positioning rib (12). By moving the movable chord distance template measuring head (5), the chord distance between the first positioning rib (11) and the second positioning rib (12) can be measured, and the adjustment amount can be visually seen.

2. The adjustable stator locating rib chord distance detector for hydrogenerator according to claim 1, characterized in that: A second chute (8) is transversely opened on the top surface of the chord distance measuring template member (2) and away from the fixed clamping plate head (3), and a first chute (7) is transversely opened on the outer wall of one side of the chord distance measuring template member (2); The first chute (7) penetrates into the second chute (8).

3. The adjustable stator locating rib chord distance detector for hydrogenerator according to claim 2, characterized in that: A longitudinal slider (22) inserted into the second chute (8) is fixedly installed at the middle position of the bottom surface of the bottom plate member (15), a transverse slider (17) inserted into the first chute (7) is fixed to the inner wall of the pushing slide block (9), and the free end of the transverse slider (17) is connected to the outer wall of the longitudinal slider (22).

4. The adjustable stator locating rib chord distance detector for hydrogenerator according to claim 3, characterized in that: A threaded counterbore (18) is horizontally opened on the outer wall of one side of the pushing slide block (9), the threaded counterbore (18) penetrates into the transverse slider (17), and the threaded counterbore (18) is connected to the longitudinal slider (22) by a first locking bolt (16).

5. The adjustable stator locating rib chord distance detector for hydrogenerator according to claim 4, characterized in that: When the first locking bolt (16) is installed into the threaded counterbore (18), a rubber gasket disc (19) is embedded in the threaded counterbore (18), and the inner wall of the rubber gasket disc (19) abuts against the outer wall of the nut of the first locking bolt (16).

6. The adjustable stator locating rib chord distance detector for hydrogenerator according to claim 5, characterized in that: A clamping plate (20) is integrally connected to the bottom end of the pushing slide block (9), the inner wall of the clamping plate (20) is in sliding friction contact with the bottom surface of the chord distance measuring template member (2), and the clamping plate (20) is dynamically connected to the chord distance measuring template member (2) by a second locking bolt (21).

7. The adjustable stator locating rib chord distance detector for hydrogenerator according to claim 6, characterized in that: Balanced limiting edge plates (23) are symmetrically welded on both sides of the upper and lower ends of the longitudinal slider (22), and the outer walls of the balanced limiting edge plates (23) are in sliding friction contact with the inner walls of the second chute (8).

8. The adjustable stator locating rib chord distance detector for hydrogenerator according to claim 7, characterized in that: One end of the string height measurement template (2) far from the fixed chuck head (3) is installed with a detachable end plate (10) through a detachable bolt (14), and a handle (4) is installed on the outer wall of the fixed chuck head (3).

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