Hydro-generator stator positioning rib chord distance adjusting and detecting device

Abstract

The utility model discloses a hydro-generator stator positioning rib chord distance adjusting and detecting device, which relates to the technical field of hydro-generator measurement and comprises a supporting assembly and a measuring assembly. The supporting assembly comprises a supporting rod, a first positioning piece arranged on the supporting rod and a second positioning piece arranged on the supporting rod in a sliding mode, identification scales are arranged on the supporting rod, and the second positioning piece moves along the supporting rod under the action of external force so as to adjust the distance between the first positioning rod and the second positioning rod; the measuring assembly comprises a dial indicator arranged on the second positioning piece; the distance between the first positioning piece and the second positioning piece is adjusted, after the first equally-divided chord distance is determined, the chord distance value between the other positioning ribs and the deviation value relative to the first equally-divided chord distance are measured through the first equally-divided chord distance and the dial indicator, the measured value and the specific deviation value of the chord distance can be visually obtained, and measurement is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of hydro-generator measurement technology, specifically to a hydro-generator stator positioning rib pitch adjustment detection device. Background Technology

[0002] The positioning ribs are non-standard in shape, and the number of measurement points in a single measurement is in the thousands. The chord spacing template provided by the unit manufacturer has a fixed length, which can only determine whether it is larger or smaller than the standard value. It is impossible to accurately measure the specific deviation of the chord spacing value of the positioning ribs, and it is impossible to measure the specific value of the chord spacing of the positioning ribs. The measurement process requires repeated measurements to find the optimal measurement point, which is inefficient, time-consuming and labor-intensive.

[0003] The utility model patent CN215598282U discloses a device for accurately measuring the chord pitch of the stator positioning ribs in a hydro-generator set. It includes a main scale, on which a measuring scale is slidably mounted. A measuring track is fixedly mounted on the back of the measuring scale by multiple fixing bolts, and the measuring track is slidably mounted on the outside of the main scale. A scale plate is fixedly mounted on the front end of the measuring track by multiple fixing bolts, and the measuring track is limited and fitted onto the main scale. The scale plate aligns with the scale lines machined on the main scale to display the measured value. In this patent, the chord pitch of the positioning ribs can be displayed by the alignment of the scale plate with the scale lines. However, it is difficult to determine the specific deviation between the measured value and the standard value. Verticality needs to be recorded and calculated during the measurement process. Since there are many positioning ribs, the overall calculation is large, making it difficult to intuitively determine the measured value and specific deviation of the chord pitch of the positioning ribs. Utility Model Content

[0004] The main purpose of this utility model is to provide a device for detecting the chord pitch adjustment of the stator positioning ribs of a hydro-generator, which solves the problem that existing positioning rib chord pitch measuring devices cannot intuitively obtain the measured value and specific deviation value of the chord pitch of the positioning ribs.

[0005] To achieve the above objectives, this utility model provides a device for detecting the chord pitch adjustment of the stator positioning ribs of a hydro-generator, comprising:

[0006] The support assembly includes a support rod, a first positioning member disposed on the support rod, and a second positioning member slidably disposed on the support rod; the support rod is provided with marking scales; the second positioning member moves along the support rod under the action of external force to adjust the distance between the first positioning rod and the second positioning rod;

[0007] The measuring components include a dial indicator mounted on the second positioning element.

[0008] As a further improvement of this utility model, the first positioning member and the second positioning member are perpendicular to the support rod; the center line of the first positioning member and the center line of the second positioning member are located on the same plane.

[0009] As a further improvement of this utility model, the support rod is a square rod with a sliding sleeve; the sliding sleeve has a square cavity, the sliding sleeve and the support rod are fitted with a clearance, and the sliding sleeve is equipped with a locking element; the locking element abuts against the outer wall of the support rod under the action of external force; the second positioning element is provided on the sliding sleeve.

[0010] As a further improvement of this utility model, the second positioning member is provided with a connecting ring; the connecting ring is provided with a fixing member; and the dial indicator is installed inside the connecting ring.

[0011] As a further improvement of this utility model, the center line of the connecting ring is perpendicular to the center line of the second positioning member.

[0012] As a further improvement of this utility model, the support rod is also provided with a horizontal member; the horizontal member is disposed on the end face of the support rod parallel to the center line of the first positioning member.

[0013] The beneficial effects of this utility model are reflected in:

[0014] By adjusting the spacing between the first and second positioning components, after determining the first equal division of the chord distance, the chord distance between the remaining positioning ribs and the deviation value relative to the first equal division of the chord distance can be measured using a dial indicator. The measured value of the chord distance and the specific deviation value can be obtained intuitively, making the measurement more convenient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the stator positioning rib pitch adjustment and detection device for hydro-generator according to this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure between the sliding sleeve and the second positioning component of the stator positioning rib pitch adjustment and detection device for the hydro-generator stator of this utility model.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Support rod; 2. First positioning component; 3. Second positioning component; 4. Marking scale; 5. Dial indicator; 6. Sliding sleeve; 7. Cavity; 8. Locking component; 9. First screw hole; 10. Connecting ring; 11. Fixing component; 12. Mounting cavity; 13. Second screw hole; 14. Horizontal component. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] In one embodiment, see Figure 1 The present invention relates to a hydro-generator stator positioning rib pitch adjustment and detection device, which includes a support component and a measuring component.

[0021] The support assembly includes a support rod 1, a first positioning member 2 disposed on the support rod 1, and a second positioning member 3 slidably disposed on the support rod 1. The support rod 1 is provided with a marking scale 4. The second positioning member 3 moves along the support rod 1 under the action of external force to adjust the distance between the first positioning rod and the second positioning rod. The measuring assembly includes a dial indicator 5 disposed on the second positioning member 3.

[0022] Preferably, the dial indicator 5 adopts an existing structure. The dial indicator 5 includes a body, a bushing, a measuring rod, and a measuring head. The body is provided with a dial, the measuring rod passes through the body and is slidably disposed in the bushing, and the measuring head is located at the end of the measuring rod.

[0023] For details, see Figure 1 The first positioning element 2 and the second positioning element 3 are perpendicular to the support rod 1, and the center line of the first positioning element 2 and the center line of the second positioning element 3 are located on the same plane.

[0024] Preferably, the first positioning member 2 and the second positioning member 3 are both rod-shaped structures, and the first positioning member 2 and the second positioning member 3 are located on the same side of the support rod 1.

[0025] Preferably, the marking scale 4 is set on the upper end surface of the support rod 1.

[0026] Further, see Figure 1 The support rod 1 is a square rod, and a sliding sleeve 6 is provided on the support rod 1. The sliding sleeve 6 has a square cavity 7 inside. The sliding sleeve 6 and the support rod 1 are fitted with a clearance. A locking element 8 is provided on the sliding sleeve 6. The locking element 8 abuts against the outer wall of the support rod 1 under the action of external force. The second positioning element 3 is provided on the sliding sleeve 6.

[0027] Preferably, the sliding sleeve 6 is a hollow cuboid structure with openings at both ends, and a first screw hole 9 is provided on the outer wall of the sliding sleeve 6.

[0028] Preferably, the locking member 8 is a locking stud, which is connected to the first screw hole 9 by threads. The locking stud passes through the first screw hole 9 and abuts against the outer wall of the support rod 1, thereby fixing the position of the sliding sleeve 6 relative to the support rod 1.

[0029] Preferably, the first positioning member 2 and the support rod 1, and the second positioning member 3 and the sliding sleeve 6 can be connected by welding.

[0030] In the above setup, the second positioning component 3 and the dial indicator 5 are moved along the support rod 1 by moving the sliding sleeve 6, thereby adjusting the distance between the first positioning component 2 and the second positioning component 3, and thus adjusting the distance between the measuring head of the dial indicator 5 and the first positioning component 2.

[0031] Further, see Figure 1 , 2 The second positioning component 3 is provided with a connecting ring 10, and the connecting ring 10 is provided with a fixing component 11. The dial indicator 5 is installed inside the connecting ring 10.

[0032] Preferably, the connecting ring 10 has a hollow interior forming an installation cavity 12, and the connecting ring 10 has a second screw hole 13. The fixing member 11 is a fixing stud, and the fixing stud is connected to the second screw hole 13 by a thread.

[0033] Preferably, the dial indicator 5 is connected to the connecting ring 10 by inserting a bushing into the mounting cavity 12, and is fixed to the connecting ring 10 by abutting against the bushing with a fixing stud.

[0034] Preferably, the bottom of the dial indicator 5 is close to the second positioning member 3, so that the dial is located above the second positioning member 3, thereby facilitating reading.

[0035] Further, see Figure 2 The center line of the connecting ring 10 is perpendicular to the center line of the second positioning member 3.

[0036] Preferably, there is a clearance fit between the mounting cavity 12 and the bushing.

[0037] In the above setup, the dial indicator 5 is inserted into the mounting cavity 12 through the bushing and abutted against the bushing using a fixing stud, thereby fixing the dial indicator 5 inside the connecting ring 10. Since the center line of the connecting ring 10 is perpendicular to the center line of the second positioning member 3, and since the center line of the first positioning member 2 is parallel to the center line of the second positioning member 3, it can be seen that the center line of the connecting ring 10 is aligned with the center line of the first positioning member 2. This ensures that after the bushing is connected to the connecting ring 10, the center line of the bushing is perpendicular to the center lines of the first positioning member 2 and the second positioning member 3, respectively. When the dial indicator 5 is installed on the second positioning member 3 to measure the chord distance between the positioning ribs, the measurement error can be reduced.

[0038] Further, see Figure 1The support rod 1 is also provided with a horizontal component 14, which is set on the end face of the support rod 1 that is parallel to the center line of the first positioning component 2.

[0039] Preferably, the leveling component 14 is a bubble level, and the leveling component 14 is located on the end face of the support rod 1 near the dial indicator 5, that is, on the upper end face of the support rod 1, so as to facilitate observation.

[0040] In the above setup, when using the dial indicator 5 on the first positioning component 2 in conjunction with the second positioning component 3 to measure the chord distance of the positioning rib, the spirit level ensures that the support rod 1 is parallel to the horizontal plane. This ensures that when the dial indicator 5 on the first positioning component 2 and the second positioning component 3 are in contact with the outer wall of the adjacent positioning rib, the line connecting the contact point between the first positioning component 2, the second positioning component 3 and the positioning rib is parallel to the horizontal plane, thus ensuring measurement accuracy.

[0041] In this embodiment, when adjusting the stator positioning ribs of the hydro-generator, firstly, an inside micrometer is used to measure and record the chord spacing between the first group of adjacent positioning ribs (the first chord spacing, which serves as the reference chord spacing). Then, all chord spacings are measured and adjusted using this device. Moving the sliding sleeve 6 causes the measuring head on the dial indicator 5 to contact the side of the first positioning member 2. The dial indicator 5 reads "0". Moving the sliding sleeve 6 causes the dial indicator 5 to move away from the first positioning member 2. The distance the sliding sleeve 6 moves is determined according to the markings on the scale 4 as the reference chord spacing distance (this can also be achieved by using...). The distance between the measuring head on dial indicator 5 and the first positioning rod is determined by the inside micrometer. Based on the baseline division, the dial indicator 5 is adjusted to "0". The first positioning piece 2 and the second positioning piece 3 are then positioned between adjacent positioning ribs. Without calculation, the support rod 1 is moved towards the positioning ribs to move the entire device. The measuring head on dial indicator 5 contacts the outer wall of the positioning rib, and its reading and deviation value are obtained. During measurement, the chord distance between adjacent positioning ribs is the sum of the baseline division distance and the reading value on dial indicator 5. The deviation is the value on dial indicator 5.

[0042] In the above measurement, when determining the first equal division chord distance, the dial indicator 5 can also be moved by moving the second positioning rod, so that the first positioning rod is in contact with the outer wall of one set of positioning ribs, and the measuring head of the dial indicator 5 is in contact with the outer wall of another set of adjacent positioning ribs to measure the first equal division chord distance. During the measurement process, it should be noted that the measuring head of the dial indicator 5 is not subjected to a pushing force, and the reading on the dial of the dial indicator 5 is "0".

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for detecting and adjusting the chord pitch of the stator positioning ribs of a hydro-generator, characterized in that, include: The support assembly includes a support rod (1), a first positioning element (2) disposed on the support rod (1), and a second positioning element (3) slidably disposed on the support rod (1); the support rod (1) is provided with marking scale (4); the second positioning element (3) moves along the support rod (1) under the action of external force to adjust the distance between the first positioning rod and the second positioning rod; The measuring component includes a dial indicator (5) mounted on the second positioning element (3); The support rod (1) is a square rod, and a sliding sleeve (6) is provided on the support rod (1); a square cavity (7) is provided inside the sliding sleeve (6), the sliding sleeve (6) and the support rod (1) are in clearance fit, and a locking element (8) is provided on the sliding sleeve (6); the locking element (8) abuts against the outer wall of the support rod (1) under the action of external force; a second positioning element (3) is provided on the sliding sleeve (6); The second positioning component (3) is provided with a connecting ring (10); the connecting ring (10) is provided with a fixing component (11); the dial indicator (5) is installed inside the connecting ring (10); The centerline of the connecting ring (10) is perpendicular to the centerline of the second positioning member (3); The support rod (1) is also provided with a horizontal component (14); the horizontal component (14) is provided on the end face of the support rod (1) which is parallel to the center line of the first positioning component (2); A positioning component (2) is welded to the support rod (1); The starting point of the marking scale (4) is flush with the end of the first positioning element (2) that is close to the second positioning element (3).

2. The device for adjusting and detecting the chord pitch of the stator positioning ribs of a hydro-generator according to claim 1, characterized in that: The first positioning element (2) and the second positioning element (3) are perpendicular to the support rod (1); the center line of the first positioning element (2) and the center line of the second positioning element (3) are located on the same plane.

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