Impact type runner water cutting edge inspection tool

Abstract

The utility model provides an impact type runner water cutting edge inspection tool which comprises a sample plate base, a sample plate fixing frame, at least one group of sample plate frames and a measuring rod, the measuring rod has an inspection end. The sample plate fixing frame is fixedly connected with the sample plate base; the sample plate frame is fixedly connected with the sample plate fixing frame; each group of sample plate frames is provided with a plurality of measuring rods; the inspection ends of the measuring rods arranged on the same sample plate frame are fitted to form the contour of the water cutting edge, the inspection ends are fitted to the contour of the water cutting edge by adjusting the positions of the measuring rods, and good universality is achieved. In the later production and maintenance process, a sample plate does not need to be manufactured for the water cutting edge of each type of impact type rotating wheel, and the situation that the sample plate is lost and cannot be checked is also avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydropower station equipment, and in particular relates to an impact-type runner water-cutting blade inspection tool. Background Art

[0002] The impulse turbine is a hydraulic prime mover that uses a special water-guiding mechanism to draw out a free jet with kinetic energy, which rushes towards the runner bucket, causing the runner to rotate and do work, thereby completing the conversion of water energy into mechanical energy. Therefore, the shape of the water-cutting blade of the impulse turbine is very important, affecting the efficiency, cavitation performance and operating stability of the turbine. In order to maximize the work efficiency, the shape of the water-cutting blade is often irregular. In order to check whether it meets the design requirements, a template is usually made according to each section of the water-cutting blade, and then each template is installed into the shape of the water-cutting blade. The gap value between the water-cutting blade and each template is checked to determine whether the processed surface of the water-cutting blade is qualified. However, this requires the manufacture of templates for the water-cutting blades of different models of impulse runners, and the size of an inspection tool is usually large. Especially in the later production and maintenance process, because many sets of templates need to be stored, there will be phenomena such as the loss of templates, which makes it impossible to check the water-cutting blade normally. Therefore, an inspection tool is needed that can be used for the size inspection of the water-cutting blades of different models of impulse runners. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an impact wheel water cutting blade inspection tool, which can be used for water cutting blade size inspection of impact wheels with different signals, thereby greatly increasing the inspection efficiency.

[0004] In order to solve the above problems, the utility model provides an impact wheel water cutting blade inspection tool, including: a template base, a template fixing frame, at least one group of template frames and a measuring rod; the measuring rod has an inspection end; the template fixing frame is fixedly connected to the template base; the template frame is fixedly connected to the template fixing frame; each group of template frames is provided with a plurality of measuring rods; the inspection ends of the measuring rods arranged on the same template frame are fitted into the outer contour of the water cutting blade.

[0005] Furthermore, the inspection end of the above-mentioned impact wheel water cutting blade inspection tool is conical.

[0006] Furthermore, the sample frame in the above-mentioned impact wheel water cutting blade inspection tool is provided with a plurality of first holes; the aperture of the first hole is consistent with the rod diameter of the measuring rod; and the measuring rod passes through the first hole.

[0007] Furthermore, the axes of the first holes arranged in the same group of sample racks in the above-mentioned impact wheel water cutting blade inspection tool are all located in the same plane; and the axes of the first holes are parallel to each other.

[0008] Furthermore, the sample frame in the above-mentioned impact wheel water cutting blade inspection tool has two mounting parts; between the two mounting parts is the inspection space of the water cutting blade; the inspection end of the measuring rod passes through the first hole on the mounting part and is arranged toward the inspection space.

[0009] Furthermore, the mounting portion of the above-mentioned impact wheel water cutting blade inspection tool has a standard surface; the standard surface is perpendicular to the axis of the measuring rod; and the measuring rod is provided with a scale.

[0010] Furthermore, the above-mentioned impact wheel water cutting blade inspection tool also includes: a profile line; a pinhole is provided at the position where the inspection end contacts the water cutting blade; and the profile line passes through the pinhole and is tensioned.

[0011] Furthermore, the intermediate line of the above-mentioned impact wheel water cutting blade inspection tool is a fishing line.

[0012] Furthermore, the above-mentioned impact wheel water cutting blade inspection tool also includes: a fixing ring; the fixing ring is located on the uppermost measuring rod; and one end of the profile line is connected to the fixing ring.

[0013] Furthermore, in the above-mentioned impact wheel water cutting blade inspection tool, the inspection end is made of wear-resistant material; and the inspection end is detachably connected to the measuring rod.

[0014] The utility model has the beneficial effect that the inspection end can fit the outer contour of the water cutting blade by adjusting the position of the measuring rod, and has good versatility. In the later production and maintenance process, it is no longer necessary to manufacture a sample for each type of water cutting blade of the impact wheel, and the situation that the sample cannot be inspected due to loss is also avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the structural front view of the utility model.

[0016] Figure 2 It is a left view of the structure of the utility model.

[0017] Figure 3 for Figure 2 A partial enlarged view of point A in the middle. Description of the drawings:

[0019] 1: sample base; 2: sample fixing frame; 3: sample frame; 31: first hole; 32: mounting portion; 321: inspection space; 33: first reference plane; 4: measuring rod; 41: inspection end; 5: profile line; 6: fixing ring. DETAILED DESCRIPTION

[0020] like Figure 1As shown, the utility model includes a sample base 1, a sample fixing frame 2, at least one set of sample frames 3 and a plurality of measuring rods 4. The sample fixing frame 2 is fixedly connected to the sample base 1, and the sample frame 3 is fixedly connected to the sample fixing frame 2, so that the position of the sample frame 3 will not move, thereby ensuring the correctness of the inspection result. Each measuring rod has an inspection end 41, and each set of sample frames 3 is provided with a plurality of measuring rods 4. The inspection end 41 of the measuring rod 4 provided on the same sample frame 3 is fitted into the outer contour of the water cutting blade. Each set of sample frames 3 can fit the outer contour of the water cutting blade through the inspection end 41. The more the number of measuring rods 4, the closer the fitted contour is to the outer contour of the water cutting blade. By adjusting the relative position of the measuring rod 4 and the sample frame 3, the outer contour fitted by the inspection end 41 can be changed, so that the water cutting blade of different models of impact runners can be inspected.

[0021] In order to make the inspection end 41 fit better with the water cutting blade, the inspection end 41 is conical. Since the inspection end 41 often contacts the water cutting blade, the inspection end 41 is made of wear-resistant material and is detachably connected to the measuring rod 4. The sample frame 3 is provided with a plurality of first holes 31, the aperture of the first holes 31 is consistent with the rod diameter of the measuring rod 4, and the measuring rod 4 is arranged through the first holes 31. The larger the number of the first holes 31, the closer the inspection end 41 will be to the outer contour of the water cutting blade.

[0022] In order to facilitate the setting of inspection data, the first holes 31 set in the same group of sample racks 3 are all located in the same plane, and the axes of the first holes 31 are parallel to each other. In order to improve the inspection speed, the sample rack 3 has two mounting parts 32, and the inspection space 321 of the water cutting blade is between the two mounting racks. The inspection end 41 of the measuring rod 4 passes through the first hole 31 on the mounting part 32 and is arranged toward the inspection space 321, so that the inspection end 41 fits its outer contour on both sides of the water cutting blade. The mounting part 32 has a standard surface, which is perpendicular to the axis of the measuring rod 4. The measuring rod 4 is also provided with a scale. The scale number of the scale can be read in combination with the standard surface, so as to accurately control the relative position of the measuring rod 4 and the sample rack 3. A pinhole is also provided at the position where the inspection end 41 contacts the water cutting blade, and the profile 5 passes through the pinhole and is tensioned, so that the profile 5 can further fit the contour of the water cutting blade, and the gap between the fitted contour and the outer contour of the water cutting blade can be more intuitively observed. The profile 5 can be a group of tough lines such as fishing lines. The fixing ring 6 is located on the uppermost measuring rod 4, and one end of the profile 5 is connected to the fixing ring 6. The fixing ring can be moved and fixed on the uppermost measuring rod to adapt to the inspection of different water cutting edges.

[0023] When testing, first obtain the cross-sectional dimensions to be inspected according to the design requirements, then adjust the measuring rod 4 to the corresponding position and fix it, so as to fit the cross-sectional dimensions to be inspected, and the relative position of the measuring rod 4 can be better adjusted in accordance with the scale on the measuring rod 4. The water cutting blade can also be placed in the inspection space 321, and then the inspection end 41 of the measuring rod 4 is brought into contact with the water cutting blade, and by reading the scale on the measuring rod 4, the theoretical scale number of each measuring rod 4 of the inspection cross-sectional dimensions is calculated using computer software, so as to determine whether the dimensions of the water cutting blade meet the design requirements.

[0024] With such arrangement, there is no need to use a specific template, and the outer contours of water cutting blades of different models can be fitted simply by adjusting the position of the measuring rod 4, thereby increasing the adaptability of the inspection tool.

[0025] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0026] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of the present application.

Claims

1. An impact wheel water cutting blade inspection tool, characterized in that it includes: A sample base (1), a sample fixing frame (2), at least one set of sample frames (3) and a measuring rod (4); The measuring rod (4) has an inspection end (41); The sample fixing frame (2) is fixedly connected to the sample base (1); The sample frame (3) is fixedly connected to the sample fixing frame (2); Each group of the sample racks (3) is provided with a plurality of the measuring rods (4); The inspection end (41) of the measuring rod (4) arranged on the same sample frame (3) is fitted into the outer contour of the water cutting blade.

2. The impact wheel water cutting blade inspection tool according to claim 1, characterized in that: The inspection end (41) is conical.

3. The impact wheel water cutting blade inspection tool according to claim 1, characterized in that: The sample rack (3) is provided with a plurality of first holes (31); The diameter of the first hole (31) is consistent with the diameter of the measuring rod (4); The measuring rod (4) passes through the first hole (31).

4. The impact wheel water cutting blade inspection tool according to claim 3, characterized in that: The axes of the first holes (31) arranged in the same group of the sample racks (3) are all located in the same plane; Furthermore, the axes of the first holes (31) are parallel to each other.

5. The impact wheel water cutting blade inspection tool according to claim 4, characterized in that: The sample rack (3) has two mounting parts (32); An inspection space (321) for the water cutting blade is provided between the two mounting portions (32); The inspection end (41) of the measuring rod (4) passes through the first hole (31) on the mounting portion (32) and is arranged toward the inspection space (321).

6. The impact wheel water cutting blade inspection tool according to claim 5, characterized in that: The mounting portion (32) has a standard surface; The standard surface is perpendicular to the axis of the measuring rod (4); The measuring rod (4) is provided with a scale.

7. The impact wheel water cutting blade inspection tool according to claim 5, characterized in that include: Type line (5); A pinhole is provided at a position where the inspection end (41) contacts the water cutting blade; The profile wire (5) passes through the needle hole and is tensioned.

8. The impact wheel water cutting blade inspection tool according to claim 7, characterized in that: The profiled line (5) is a fishing line.

9. The impact wheel water cutting blade inspection tool according to claim 7, characterized in that include: Fixed ring (6); The fixing ring (6) is located on the uppermost measuring rod (4); One end of the profile line (5) is connected to the fixing ring (6).

10. The impact wheel water cutting blade inspection tool according to claim 1, characterized in that: The inspection end (41) is detachably connected to the measuring rod (4).

Images