Device for detecting height of each section of inner wall of flame tube of aero-engine

Abstract

The device for detecting the height of each section of the inner wall of the flame tube of the aero-engine comprises a measuring block, an adapter, a base and a digital display type height gauge, a positioning pin is arranged in the central area of the base, and the positioning pin penetrates through a round hole and can limit or fix the flame tube; the positioning pin is sleeved with a meter setting pin, and the top end of the meter setting pin is arranged below the annular step with the lowest vertical height. The height gauge is arranged close to the base, one side of the digital display block is connected with one end of the adapter, and the other end of the adapter is provided with the measuring head through a screw; the meter setting pin is used for adjusting the measuring reference of the measuring head on the height gauge; during measurement, the measuring block is placed on the annular step with the lowest vertical height, the height measurement of the annular step with the lowest vertical height is completed by placing the bottom surface of the measuring head on the top surface of the measuring block, the height measurement of the annular step is completed in sequence and circularly, and the measurement efficiency can be improved.

Description

Technical Field

[0001] This invention belongs to the technical field of height measurement devices, and particularly relates to a device for detecting the height of various sections of the inner wall of an aero-engine flame tube. Background Technology

[0002] The flame tube is a crucial component of a certain type of aero-engine. Its structure is unique and complex, and there are many units in each unit. Traditionally, the height dimensions of its various sections have been inspected using a combination of depth gauges, gauge blocks, and calculations. This method requires two inspectors to work together to take measurements, then input the data into a computer for calculation. This process is inefficient, complex, and prone to accumulating measurement errors during indirect measurement, affecting the accuracy of the results.

[0003] In view of this, the present invention is hereby proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a device for detecting the height of various sections of the inner wall of an aero-engine flame tube, solving the technical problem of low efficiency in measuring or detecting the height of the annular step of the flame tube using existing methods. The technical solution of this invention has many beneficial effects, as described below: A device for detecting the height of different sections of the inner wall of an aero-engine flame tube is disclosed. The flame tube has an open structure at one end and a rounded transition to a planar structure at the other end, with a circular hole. The inner wall surface of the flame tube, with its gradual transition, has annular steps spaced vertically. The device includes a measuring block, an adapter, a base, and a digital height gauge. The height gauge has a sliding digital display block. The measuring block can be placed on any of the annular steps. A positioning pin is provided in the central area of ​​the base. The positioning pin passes through the circular hole and can limit or fix the flame tube. A dial indicator pin is sleeved on the positioning pin, and the top of the dial indicator pin is placed below the annular step with the lowest vertical height. The height gauge is placed near the base, one side of the digital display block is connected to one end of the adapter, and the other end of the adapter is fitted with a measuring head by a screw; the dial indicator pin is used to adjust the measuring head's measurement reference on the height gauge. During measurement, the measuring block is placed on the annular step with the lowest vertical height. The height of the annular step with the lowest vertical height is measured by placing the bottom surface of the measuring head on the top surface of the measuring block. The height of the annular step is measured in this way.

[0005] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The detection device of this invention has a simple structure, is easy to operate, saves labor and time, and has high reliability. It improves the detection efficiency by 2.5 times, increasing efficiency by 2.5 times and improving detection accuracy. It mainly solves the problem of low detection efficiency of the height dimensions of various sections of the inner wall of the flame tube of this type of aero-engine, greatly reducing production costs, improving company efficiency, and has great practical value. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1 The main view of the overall structure of the invention; Figure 2 for Figure 1 AA section view in the middle; Figure 3 This is a top view, where, 1. Handle; 2. Flame tube; 3. Base; 4. Positioning pin; 5. Dial pin; 6. Height gauge; 7. Adapter; 8. Digital display block; 9. Measuring head; 10. Measuring block. Detailed Implementation

[0008] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0009] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this invention, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0010] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0011] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that aspects can be practiced without these specific details. To enable those skilled in the art to better understand the invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise stated, "a plurality of" means two or more.

[0012] like Figures 1 to 3 The device shown is for detecting the height of various sections of the inner wall of the aero-engine flame tube 2. One end of the flame tube 2 is open, while the other end transitions to a flat surface with a rounded corner and a circular hole. The inner wall of the flame tube 2, with its gradual transition, has annular steps spaced vertically. It includes a measuring block 10, an adapter 7, a base 3, and a digital height gauge 6. A sliding digital display block 8 is mounted on the height gauge 6. The measuring block 10 can be placed on any of the annular steps. The length of the measuring block 10 is taken between the maximum and minimum dimensions of the annular platform of the flame tube 2, ensuring that it can be placed or supported on the measured annular step. A positioning pin 4 is provided in the central area of ​​the base 3. The positioning pin 4 passes through a round hole to limit or fix the flame tube 2. A dial indicator pin 5 is sleeved on the positioning pin 4, and the top of the dial indicator pin 5 is positioned below the lowest vertical annular step. The height gauge 6 is placed near the base 3. One side of the digital display block 8 is connected to one end of the adapter 7. The other end of the adapter 7 is fitted with a measuring head 9 by screws. Generally, the non-open end of the flame tube 2 has a complex structure, which affects the detection accuracy. The dial indicator pin 5 is used to adjust the measuring head 9 at the measuring reference of the height gauge 6. For example, a 50mm or 100mm dial indicator pin 5 is selected to measure the annular step with a height of 50mm or 100mm as the reference, which facilitates the observation and reading of the height gauge 6.

[0013] During measurement, the measuring block 10 is placed on the annular step with the lowest vertical height. The bottom surface of the measuring head 9 is placed on the top surface of the measuring block 10 to complete the height measurement of the annular step with the lowest vertical height. The height measurement of the annular step is completed in a cyclical manner.

[0014] In one specific embodiment, handles 1 are respectively provided at both ends of the base 3 along its length. The angle between the tilt angle of the handle 1 and the center line of the base 3 is an acute angle, which facilitates the operation and movement of the base 3. Preferably, the measuring head 9 is provided with a gradient structure, and the large end contacts the top surface of the measuring block 10, which improves the stability and accuracy of the measurement.

[0015] In one specific embodiment, the end of the adapter 7 away from the base 3 is connected to one side of the digital display block 8 in a horizontally adjustable manner. Specifically, it includes a frame with a rotatable fastening screw at the top. The side of the digital display block 8 is connected to one end of a Z-shaped rod. The other end of the Z-shaped rod is placed in the frame and passed through by the fastening screw. The adapter 7 is configured with an L-shaped structure. One end passes through the frame and rotating the fastening screw can fasten the L-shaped rod. Therefore, when it is necessary to adjust the length of the L-shaped rod horizontally, the fastening screw is rotated in the opposite direction. After the L-shaped rod is adjusted horizontally, the fastening screw is rotated in the forward direction to fasten the L-shaped rod.

[0016] Furthermore, a groove is provided in the central area of ​​the base 3, and a positioning pin 4 is provided at the bottom end of the groove. The shape of the groove is adapted to the shape of the length of the bottom part of the flame tube 2, so as to support the flame tube 2 in a contact manner. Preferably, it also includes a controller, and the digital display block 8 is provided with an intelligent reading device and a trigger switch. The operator can press the trigger switch to drive the intelligent reading device to read the reading on the height gauge 6 and feed it back to the controller; the controller can obtain the height value of the measuring block 10 in advance; The controller runs intelligent software that outputs the current height value of the circular step according to preset rules. For example, the actual measured value of each circular step is minus the height values ​​of measuring block 10, base, etc.

[0017] How to use: The testing process is conducted on a calibrated testing platform. The part to be tested is fixed to the base using locating pins, and the dial indicator pin is inserted into the locating pin hole. The height of the measuring head of the digital display testing device is adjusted to the upper end face of the dial indicator pin, and the testing device is zeroed. The measuring block is placed on the first end face to be tested, the measuring head is adjusted to the plane of the measuring block, and the data displayed on the testing device is read. This process is repeated until the height dimension data of the inner wall of the flame tube is measured. The dial indicator pin is inserted into the positioning pin hole through the flame tube, and its lower end face is in contact with the upper end face of the flame tube head hole to ensure that the actual measurement zero point is the same as the zero point on the drawing. The parallelism of its upper end face relative to the base is no more than 0.01, which effectively controls the zeroing error. The measuring block facilitates the detection of the height of each section. Since the part is a thin-walled part, it is not easy for the measuring head to contact the thin-walled end face of the part to be measured during the test. By overlapping the measuring block, the measuring head can directly contact the plane of the measuring block and read the test data. The digital height gauge of the detection device is the main measuring element, and it has functions such as data zeroing and data holding. The parallelism between its measuring head and the base is no greater than 0.02, ensuring the accuracy of the measurement data.

[0018] The product provided by this invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from the principles of the invention, and these improvements and modifications also fall within the protection scope of the invention claims.

Claims

1. A device for detecting the height of various sections of the inner wall of an aero-engine flame tube, wherein the flame tube has an open structure at one end and a rounded transition to a planar structure at the other end with a circular hole, and the inner wall surface of the flame tube with a gradient structure has annular steps spaced vertically, characterized in that, The system includes a measuring block, an adapter, a base, and a digital height gauge. The height gauge has a sliding digital display block, and the measuring block can be placed on any of the annular steps. A positioning pin is provided in the central area of ​​the base. The positioning pin passes through the circular hole and can limit or fix the flame tube. A dial indicator pin is sleeved on the positioning pin, and the top of the dial indicator pin is placed below the annular step with the lowest vertical height. The height gauge is placed near the base, one side of the digital display block is connected to one end of the adapter, and the other end of the adapter is fitted with a measuring head by a screw; the dial indicator pin is used to adjust the measuring head's measurement reference on the height gauge. During measurement, the measuring block is placed on the annular step with the lowest vertical height. The height of the annular step with the lowest vertical height is measured by placing the bottom surface of the measuring head on the top surface of the measuring block. The height of the annular step is measured in this way.

2. The detection device according to claim 1, characterized in that, Handles are provided at both ends of the base along its length, and the angle between the tilt angle of the handle and the center line of the base is an acute angle.

3. The detection device according to claim 1, characterized in that, The measuring head is configured with a gradient structure, and its large end contacts the top surface of the measuring block.

4. The detection device according to claim 1, characterized in that, The end of the adapter furthest from the base is connected to one side of the digital display block in a horizontally adjustable manner.

5. The detection device according to claim 1, characterized in that, The base has a groove in the central area, and the positioning pin is provided at the bottom of the groove. The shape of the groove is adapted to the shape of the bottom part of the flame tube, so that the flame tube can be supported in contact.

6. The detection device according to claim 1, characterized in that, It also includes a controller, wherein the digital display block is equipped with an intelligent reading device and a trigger switch, wherein, The operator can press the trigger switch to drive the intelligent reading device to read the reading on the height gauge and send it back to the controller; The controller runs intelligent software that outputs the current height value of the circular step according to preset rules.

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