A measuring tool suitable for simulating nozzles of high-speed impulse units

Abstract

The utility model provides a kind of measuring tool suitable for high-speed impact unit simulation nozzle, including simulation nozzle, water distribution ring pipe flange, piano wire and right-angle micrometer;The tail end of the simulation nozzle and water distribution ring pipe flange are used to be loaded into the adjusting flange pad plate to be processed;The piano wire is coaxially installed based on the axis of the water distribution ring pipe flange, and extends to the outer end of simulation nozzle;The right-angle micrometer includes right-angle measuring block, locking knob, micrometer and rotary measuring head, the tail end right-angle edge of the right-angle measuring block is used to abut on the outer wall of simulation nozzle, the corner joint of the right-angle measuring block is provided with inch fine tooth silk mouth, the tail end of the micrometer is correspondingly provided with inch fine tooth silk joint, the rotary measuring head is arranged at the front end of micrometer, and the locking knob is used to lock rotary measuring head.This tool has the advantages of higher measuring accuracy and higher measuring efficiency.

Description

Technical Field

[0001] This utility model relates to the field of nozzle installation technology for impact turbines, and more specifically, to a measuring tool suitable for simulating nozzles of high-speed impact turbine units. Background Technology

[0002] During the installation of high-speed impact turbine units, the angle of the adjusting flange gasket between the unit's water distribution ring pipe and the nozzle directly affects the installation quality. Since the installation accuracy standard of high-speed units is higher than that of ordinary units (<500r / min), in the traditional unit installation process, due to the characteristics of the accuracy requirements of low speed, the traditional construction method generally uses vernier calipers and depth gauges to measure the concentricity of the simulated nozzle and the simulated jet of the unit to measure the size and angle of the adjusting flange gasket of the water distribution ring pipe that needs to be processed.

[0003] Among these, vernier calipers are often limited by individual tactile sensitivity, resulting in an accuracy exceeding 0.1mm. This, in turn, affects the installation angle of the unit's nozzles, causing it to exceed standard specifications. The standard requirements for the installation angle of the nozzles and the water distribution blades of high-head, high-speed units are even more stringent, generally less than ±1mm. The machining dimensions and angles of the adjusting flange gaskets increase radially with the nozzle installation angle. Therefore, ordinary measuring and adjustment tools are difficult to meet the installation accuracy requirements of high-speed units. At the same time, the measurement error using vernier calipers and depth gauges is relatively large, often resulting in back-and-forth measurements, increasing the actual workload and greatly reducing the efficiency of unit installation.

[0004] To ensure installation accuracy, a measuring tool more suitable for high-speed impulse units needs to be developed to improve measurement accuracy while ensuring measurement efficiency. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a measurement tool with higher measurement accuracy and efficiency suitable for simulating nozzles in high-speed impact generator units.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a measuring tool suitable for a high-speed impact turbine unit's simulated nozzle, including a simulated nozzle, a water distribution ring flange, a piano wire, and a right-angle micrometer;

[0007] The tail end of the simulated nozzle and the flange of the water distribution ring pipe are used to insert the adjusting flange gasket to be processed.

[0008] The piano wire is coaxially mounted based on the water distribution ring flange and extends to the outer end of the simulated nozzle.

[0009] The right-angle micrometer includes a right-angle measuring block, a locking knob, a micrometer, and a rotating measuring head. The right-angle side of the tail end of the right-angle measuring block is used to abut against the outer wall of the simulated nozzle. The corner joint of the right-angle measuring block is provided with an imperial fine thread. The tail end of the micrometer is correspondingly provided with an imperial fine thread joint. The rotating measuring head is located at the front end of the micrometer. The locking knob is used to lock the rotating measuring head.

[0010] Preferably, the micrometer has an accuracy of 0.02 mm.

[0011] Preferably, the simulated nozzle is a simulated nozzle with a flange end.

[0012] Preferably, an adjustment flange gasket to be processed is inserted between the flange end of the simulated nozzle and the flange of the water distribution ring pipe.

[0013] Preferably, the simulated nozzle is a thick-walled steel pipe with an outer diameter of φ100mm, which is concentrically and coaxially arranged with the flange end.

[0014] Preferably, the right-angle measuring block is made of steel.

[0015] Preferably, the micrometer, locking knob, and rotating measuring head are commercially available micrometers.

[0016] Preferably, the micrometer and the right-angle measuring block together form a right-angle micrometer with an angle of 90°.

[0017] Preferably, the right-angle micrometer has a measurement accuracy of 0.04 mm.

[0018] Preferably, the fine thread of the British standard is M12.

[0019] This invention has substantial features and advancements compared to existing technologies. Specifically, it utilizes the principle of line contact between a plane and a circle, along with a micrometer with a precision of 0.02mm, to measure the concentricity of the simulated nozzle and the simulated piano line of the unit's jet. Measurements are taken in four directions: +X, +Y, -X, and -Y. By comparing these four directions, the processing dimensions of the flange gasket are calculated and adjusted to achieve a precision within 0.04mm. This solves the problem of high precision in the nozzle installation process, specifically in the tangent of the nozzle needle angle and the water distribution blade of the impeller. The final installation precision is less than ±0.5mm, ensuring the safe and stable operation of the unit and improving construction efficiency. Attached Figure Description

[0020] Figure 1 This is one of the overall schematic diagrams of a measuring tool suitable for simulating nozzles of high-speed impact generator units in this utility model.

[0021] Figure 2This is an end view of a measuring tool for simulating a nozzle in a high-speed impact generator unit, as described in this utility model.

[0022] Figure 3 This is a schematic diagram of the right-angle micrometer in this utility model.

[0023] Figure 4 This is a schematic diagram of the right-angle measuring block in this utility model.

[0024] In the diagram: 1. Right-angle measuring block; 2. Locking knob; 3. Micrometer; 4. Rotating measuring head; 5. Simulated nozzle; 6. Right-angle micrometer; 7. Piano wire; 8. Adjusting flange gasket; 9. Water distribution ring flange. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0026] like Figures 1-4 As shown, a measuring tool suitable for simulating nozzles in high-speed impact turbine units includes a simulating nozzle 5, a water distribution ring flange 9, a piano wire 7, and a right-angle micrometer 6.

[0027] The simulated nozzle 5 is a thick-walled steel pipe with an outer diameter of φ100mm and a flange end. The simulated nozzle is concentrically and coaxially arranged with the flange end.

[0028] The simulated nozzle 5 is mainly used to simulate the actual nozzle installation state. The tail flange end of the simulated nozzle 5 and the water distribution ring pipe flange 9 are used to install the adjustment flange gasket 8 to be processed. The accuracy of the adjustment flange gasket 8 restricts the quality of the entire unit installation and is the core adjustment component that needs to be processed after measurement.

[0029] The piano wire 7 is coaxially mounted based on the axis of the water distribution ring flange 9 and extends to the outer end of the simulated nozzle 5. The piano wire is used to simulate the center of the water jet of the unit. The piano wire 7 exists as the reference for measurement in the whole measuring tool, and it needs to be consistent with the reference of the water distribution ring flange 9.

[0030] The right-angle micrometer 6 includes a right-angle measuring block 1, a locking knob 2, a micrometer 3, and a rotating measuring head 4. The right-angle measuring block is made of steel. The right-angle edge of the tail end of the right-angle measuring block 1 is used to abut against the outer wall of the simulated nozzle 5. The corner joint of the right-angle measuring block 1 is equipped with an imperial fine thread thread with a specification of M12. The tail end of the micrometer 3 is correspondingly equipped with an imperial fine thread thread joint. The purpose is to make the fine thread thread mesh more tightly and reduce measurement errors.

[0031] The rotating measuring head 4 is located at the front end of the micrometer, and the locking knob 2 is used to lock the rotating measuring head 4. In this embodiment, the micrometer 3, the locking knob 2 and the rotating measuring head 4 are a complete set of commercially available micrometers, which are simply installed on the right-angle measuring block 1 to provide a 90° right-angle turn. The accuracy of the micrometer is 0.02mm, and the final measurement accuracy of the right-angle micrometer is 0.04mm.

[0032] During the measurement process, the measuring head 4 is rotated in both directions. When the measurement is finished, the locking knob 2 is tightened to avoid accidental contact that could lead to measurement errors, thus achieving the purpose of measuring absolute distance and solving the problem of low accuracy.

[0033] Basic principle explanation:

[0034] In the installation of high-speed units, adjusting the installation angle of the nozzle by simulating the nozzle and the impeller is a common method for impeller units. Due to the high speed of the unit, its accuracy is much higher than that of ordinary units. By adjusting the concentricity of the simulated nozzle 5 and the piano line 7 of the simulated jet, the installation angle of the nozzle can be effectively solved. However, its accuracy is more important and is the core parameter that this tool needs to detect.

[0035] During measurement, a right-angle micrometer 6 is used to measure the absolute dimensions of the simulated nozzle relative to the piano line 7 in the four directions of +X, +Y, -X, and -Y, accurate to 0.02mm. This replaces the measurement with a vernier caliper depth gauge. The rotating measuring head of the right-angle micrometer 6 has a large number of curved surfaces, and the curved surfaces make point contact with the piano line 7, which is more accurate than the straight-line measurement of the depth gauge.

[0036] By calculating and measuring the data, the absolute difference in the four directions is confirmed, and the machining dimensions of the flange gasket 8 are calculated and adjusted to an accuracy of 0.02mm, providing greater redundancy for gasket machining and nozzle installation.

[0037] Among them, due to the high precision requirements of the simulated nozzle 5 and the simulated jet piano line 7 of the unit, a right-angle micrometer 6 is used instead of a vernier caliper to measure the depth, so that the measurement accuracy reaches 0.04mm, improving the quality of engineering installation; by calculating the deviation value, the deviation value of the water distribution ring pipe flange 9 is calculated according to the Pythagorean theorem, and finally the processing dimensions of the flange gasket 8 are calculated and adjusted to achieve high-precision installation.

[0038] This solution uses a right-angle micrometer instead of a vernier caliper. Due to its high precision, each nozzle only needs to be measured once and then remeasured once to complete the measurement of the entire process. Compared with the vernier caliper, which has low precision and requires multiple measurements by multiple people, this solution reduces construction time and saves construction period.

[0039] The adjustment flange gasket 8 is used to adjust its angular dimensions so that the nozzle angle corresponds to the tangent of the rotor pitch circle. Therefore, the accuracy of the adjustment flange gasket 8 restricts the quality of the entire unit installation. A right-angle micrometer is used to achieve a measurement accuracy of 0.04mm, effectively solving the problem of high installation accuracy of the unit.

[0040] Compared with existing technologies, this invention improves the accuracy from 0.1mm measured by a depth gauge to 0.04mm. At the same time, this tool greatly reduces construction time and improves installation quality, while reducing rework during construction.

[0041] Finally, it should be noted that: the preferred embodiments of this patent have been described in detail above, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A measuring tool suitable for use with a simulated nozzle of a high-rotational-speed impulse unit, characterized in that: Includes simulated nozzles, water distribution ring flanges, piano wire, and right-angle micrometers; The tail end of the simulated nozzle and the flange of the water distribution ring pipe are used to insert the adjusting flange gasket to be processed. The piano wire is coaxially mounted based on the water distribution ring flange and extends to the outer end of the simulated nozzle. The right-angle micrometer includes a right-angle measuring block, a locking knob, a micrometer, and a rotating measuring head. The right-angle side of the tail end of the right-angle measuring block is used to abut against the outer wall of the simulated nozzle. The corner joint of the right-angle measuring block is provided with an imperial fine thread. The tail end of the micrometer is correspondingly provided with an imperial fine thread joint. The rotating measuring head is located at the front end of the micrometer. The locking knob is used to lock the rotating measuring head.

2. The measuring tool for simulating nozzles of high-speed impact turbine units according to claim 1, characterized in that: The micrometer has an accuracy of 0.02 mm.

3. The measuring tool for simulating nozzles of high-speed impact turbine units according to claim 1, characterized in that: The simulated nozzle is a simulated nozzle with a flange end.

4. The measuring tool for simulating nozzles of high-speed impact turbine units according to claim 3, characterized in that: The flange end of the simulated nozzle is used to insert the adjusting flange gasket to be processed between the flange end of the water distribution ring pipe and the flange end of the simulated nozzle.

5. The measuring tool for simulating nozzles of high-speed impact turbine units according to claim 4, characterized in that: The simulated nozzle is a thick-walled steel pipe with an outer diameter of φ100mm, which is concentrically and coaxially set with the flange end.

6. The measuring tool for simulating nozzles of high-speed impact turbine units according to claim 5, characterized in that: The right-angle measuring block is made of steel.

7. The measuring tool for simulating nozzles of high-speed impact turbine units according to claim 6, characterized in that: The micrometer, locking knob, and rotating measuring head are commercially available micrometers.

8. The measuring tool for simulating nozzles of high-speed impact turbine units according to claim 7, characterized in that: The micrometer and the right-angle measuring block together form a right-angle micrometer with an angle of 90°.

9. The measuring tool for simulating nozzles of high-speed impact turbine units according to claim 8, characterized in that: The right-angle micrometer has a measurement accuracy of 0.04 mm.

10. The measuring tool for simulating nozzles of high-speed impact turbine units according to claim 1, characterized in that: The specification of the fine thread is M12.

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