A tool for inspecting the tenon profile of an axial turbine

Abstract

This utility model discloses a tool for inspecting the tenon groove profile of an axial flow turbine, which has a wide inspection range and high inspection efficiency and accuracy. The axial flow turbine has a V-shaped turbine tenon groove, with tenon groove profiles on both sides. The tenon groove profiles are symmetrically arranged and toothed, and the tooth bottom grooves of the tenon groove profiles are arc-shaped. The tool includes a go gauge, a no-go gauge, and a pair of needle rollers. The diameter of the needle rollers corresponds to the diameter of the tooth bottom groove of the tenon groove profile. The pair of needle rollers are placed in the tooth bottom grooves of the tenon groove profile at the same height for fit and positioning. When the tenon groove profile is qualified, the surface distance between the pair of needle rollers is D, where D has a tolerance zone. The width of the go gauge is the minimum limit size of the tolerance zone of D, and the width of the no-go gauge is the maximum limit size of the tolerance zone of D.

Description

Technical Field

[0001] This utility model relates to the field of axial flow turbocharger technology, and in particular to a tool for detecting the tenon and groove profile of an axial flow turbocharger. Background Technology

[0002] The turbocharger is a crucial component for enhancing the power of diesel engines. Turbocharged diesel engines are widely used in diesel power applications such as automobiles, ships, diesel generators, construction machinery, and agricultural machinery. Turbocharged diesel engines burn diesel fuel to output power, and the rotor speed of an axial-flow turbocharger is typically around 30,000 RPM. Under these conditions, the turbine tenon groove will bear enormous stress. If the tenon groove profile is not up to standard, the fit clearance of the turbine blades after installation will deviate, leading to undue vibration and displacement of the turbine blades during high-speed operation, ultimately causing turbocharger failure. Therefore, controlling and inspecting the turbine tenon groove profile becomes extremely important. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a tool for detecting the tenon groove profile of an axial turbine, which has a wide detection range and high detection efficiency and accuracy.

[0004] The purpose of this utility model is achieved as follows:

[0005] A tool for inspecting the tenon groove profile of an axial flow turbine is disclosed. The axial flow turbine has a V-shaped turbine tenon groove, with tenon groove profiles on both sides. The tenon groove profiles are symmetrically arranged and toothed, and the tooth bottom grooves of the tenon groove profiles are arc-shaped. The tool includes a go gauge, a no-go gauge, and a pair of needle rollers. The diameter of the needle rollers corresponds to the diameter of the tooth bottom groove of the tenon groove profile. The pair of needle rollers are placed in the tooth bottom grooves of the tenon groove profile at the same height for fitting and positioning. When the tenon groove profile is qualified, the surface spacing of the pair of needle rollers is D, where D has a tolerance zone. The width of the go gauge is the minimum limit size of the tolerance zone of D, and the width of the no-go gauge is the maximum limit size of the tolerance zone of D.

[0006] Preferably, the go gauge and the no-go gauge are located on the go and no-go gauges. The go and no-go gauges have a measuring block and a handle. The end of the measuring block of the go and no-go gauge facing away from the handle is the go gauge, and the end facing the handle is the no-go gauge.

[0007] Due to the adoption of the above technical solution, this utility model has the following beneficial effects:

[0008] By using a go / no-go gauge to inspect it, it is possible to quickly determine whether the profile of any tenon groove is qualified. This greatly avoids the drawbacks of the limitations and randomness of traditional tenon groove inspection methods and improves the inspection range and efficiency of tenon grooves. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure Labels

[0011] In the attached diagram, 1 is the turbine tenon, 2 is the needle roller, and 3 is the go / no-go gauge. Detailed Implementation

[0012] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0013] See Figure 1 A tool for inspecting the tenon groove profile of an axial flow turbine is disclosed. The axial flow turbine has a V-shaped turbine tenon groove 1, which is formed by broaching or wire cutting. The two sides of the turbine tenon groove 1 are tenon groove profiles, which are symmetrically arranged and toothed. The tooth bottom groove of the tenon groove profile is arc-shaped. The tool includes a go gauge, a no-go gauge, and a pair of needle rollers 2. The diameter of the needle rollers 2 corresponds to the diameter of the tooth bottom groove of the tenon groove profile. The pair of needle rollers 2 are placed in the tooth bottom grooves of the tenon groove profile at the same height and are fitted and positioned. When the tenon groove profile is qualified, the surface distance between the pair of needle rollers 2 (the vertical distance between the two needle rollers) is D. D has a tolerance zone. The width of the go gauge is the minimum limit size of the tolerance zone of D, and the width of the no-go gauge is the maximum limit size of the tolerance zone of D.

[0014] The go gauge and no-go gauge are located on go and no-go gauge 3. Go and no-go gauge 3 has a measuring block ( Figure 1 Lower middle section), handle ( Figure 1 (Upper middle section), the end of the measuring block of go and no-go gauge 3 facing away from the handle is the go gauge, and the end facing the handle is the no-go gauge.

[0015] Specifically:

[0016] The measurement object is the turbine tenon groove 1. The needle rollers 2 are installed at the two symmetrical grooves on the left and right sides of the tenon groove 1 profile. Then, the go gauge 3 is used to check and compare the vertical distance between the two needle rollers. If the go gauge passes but the no-go gauge does not, it indicates that the tenon groove profile is qualified; if the go gauge does not pass or the no-go gauge passes, it indicates that the profile is out of tolerance.

[0017] An inspection of an axial turbine tenon can be completed using a go / no-go gauge and a needle roller. By changing the radial installation position of the needle roller and using go / no-go gauges of different sizes, it is possible to check whether the profiles at different positions of the same tenon are all qualified. This method enables the inspection of the entire turbine tenon, and the inspection method is highly efficient.

[0018] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A tool for inspecting the tenon profile of an axial flow turbine, wherein the axial flow turbine has a V-shaped turbine tenon, the two sides of the turbine tenon are tenon profiles, the tenon profiles are symmetrically arranged and toothed, and the groove at the bottom of the tenon profile teeth is arc-shaped, characterized in that: It includes a go gauge, a no-go gauge, and a pair of needle rollers. The diameter of the needle rollers corresponds to the diameter of the tooth bottom groove of the tenon profile. The pair of needle rollers are placed in the tooth bottom grooves of the same height of the tenon profile for fitting and positioning. When the tenon profile is qualified, the surface distance between the pair of needle rollers is D. D has a tolerance zone. The width of the go gauge is the minimum limit size of the tolerance zone of D, and the width of the no-go gauge is the maximum limit size of the tolerance zone of D.

2. The tool for detecting the tenon groove profile of an axial flow turbine according to claim 1, characterized in that: The go gauge and no-go gauge are located on the go and no-go gauge. The go and no-go gauges have measuring blocks and handles. The end of the measuring block facing away from the handle is the go gauge, and the end facing the handle is the no-go gauge.

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