Device for measuring throat area of engine blade

Abstract

The utility model discloses an engine blade throat area measuring appliance which comprises a base body, and one side of the base body is a rectangular measuring section. The right end of the measuring section is provided with a first fixed measuring piece, and the upper end of the measuring section is provided with a second fixed measuring piece and a third fixed measuring piece. A first movable measurer is arranged at the left end of the measuring section, and a second movable measurer and a third movable measurer are respectively arranged at the lower end of the measuring section; the beneficial effects of the utility model are that the three fixed points correspond to the three movable measuring points to measure the cross section position point of the throat (similar to a trapezoid) of the engine blade, and the cross section area is calculated through a preset program, thereby meeting the detection requirements of a user for rapidness, accuracy, online and low cost.

Description

Technical Field

[0001] The utility model relates to the field of engine blade detection equipment, in particular to an engine blade throat area measuring device. Background Art

[0002] Blades are the core components of the engine. During long-term use, blades will wear out, affecting the normal operation of the engine. Therefore, blades need to be inspected regularly to reduce engine failures. When inspecting blades, the throat area formed between the blades is mainly measured. Once the throat area exceeds the limit, it proves that the engine blades are severely worn and need to be replaced and repaired.

[0003] At present, the detection of engine blade throat area mainly uses a gauge: three fixed points correspond to three active measuring points to measure the cross-sectional area of ​​the engine blade throat (similar to a trapezoid), and then the displacement of the three active measuring points is transmitted through the lever linkage, and finally the measurement result is reflected in 1 displacement, and then the measurement result is displayed by putting a dial indicator at this position. The production site lacks fast, accurate, online and low-cost special equipment to detect this parameter. Summary of the invention

[0004] The utility model aims to provide an engine blade throat area measuring device, which can quickly measure the engine blade throat area.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An engine blade throat area measuring device comprises a base, one side of which is a rectangular measuring section;

[0007] A first fixed measuring element is disposed at the right end of the measuring section, and a second fixed measuring element and a third fixed measuring element are disposed at the upper end of the measuring section respectively;

[0008] A first movable probe is disposed at the left end of the measuring section, and a second movable probe and a third movable probe are disposed at the lower end of the measuring section, wherein the first movable probe is connected to a first sensor, the second movable probe is connected to a second sensor, and the third movable probe is connected to a third sensor;

[0009] The extension direction of the first fixed probe and the extension direction of the first movable probe are located on the same straight line, the extension direction of the second fixed probe and the extension direction of the second movable probe are located on the same straight line, and the extension direction of the third fixed probe and the extension direction of the third movable probe are located on the same straight line.

[0010] Preferably, a connector for accommodating power signal lines of the first sensor, the second sensor and the third sensor is provided on a side of the base body away from the measuring section.

[0011] Preferably, the joint is a waterproof joint.

[0012] Preferably, a support rod in contact with the blades is provided on the base.

[0013] Preferably, a spring piece is provided at the front end of the measuring section.

[0014] Preferably, a stop pin is provided at the lower end of the measuring section.

[0015] Preferably, the first movable probe is connected to a first sensor via a first lever, the second movable probe is connected to a second sensor via a second lever, and the third movable probe is connected to a third sensor via a third lever.

[0016] The beneficial effects of the utility model are:

[0017] 1. The cross-sectional position points at the throat of the engine blade (similar to a trapezoid) are measured by three fixed points corresponding to three movable measuring points, and the cross-sectional area is calculated through a pre-set program, which meets the user's requirements for fast, accurate, online and low-cost detection.

[0018] 2. The power signal line of the tester is accommodated and fixed by the connector to protect it and avoid damage to the line during the measurement process.

[0019] 3. Through the setting of the spring piece, the fixed measuring device can be close to the blade being measured, making the measurement result more accurate.

[0020] 4. The support rod is supported on the upper blade of the blade to be tested, making it convenient to extend the measuring instrument into the blade throat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the utility model;

[0022] Figure 2 A three-dimensional diagram of the present invention from another angle;

[0023] Figure 3 It is a partial three-dimensional diagram of the utility model from another angle;

[0024] Figure 4 It is a schematic diagram of the structure inside the base of the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the interior of the base of the utility model from another angle;

[0026] Figure 6It is a measurement schematic diagram of the utility model.

[0027] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings. Example

[0029] like Figure 1 As shown, an engine blade throat area measuring device according to an embodiment of the utility model comprises a base body 1, one side of the base body 1 is a rectangular measuring section 2;

[0030] A first fixed measuring element 21 is disposed at the right end of the measuring section 2, and a second fixed measuring element 22 and a third fixed measuring element 23 are disposed at the upper end of the measuring section 2;

[0031] like Figure 4 and Figure 5 As shown, the left end of the measuring section 2 is provided with a first movable probe 25, and the lower end of the measuring section 2 is provided with a second movable probe 27 and a third movable probe 28, respectively. The first movable probe 25 is connected to a first sensor 44 through a first lever 41, the second movable probe 27 is connected to a second sensor 45 through a second lever 42, and the third movable probe 28 is connected to a third sensor 46 through a third lever 43; the levers and sensors are both located inside the base 1. When the movable probe contacts the blade, a certain displacement can occur and be transmitted to the sensor connected thereto through the lever connected thereto.

[0032] The extension direction of the first fixed probe 21 and the extension direction of the first movable probe 25 are located on the same straight line, the extension direction of the second fixed probe 22 and the extension direction of the second movable probe 27 are located on the same straight line, and the extension direction of the third fixed probe 23 and the extension direction of the third movable probe 28 are located on the same straight line.

[0033] When in use, the three fixed probes only serve as fixed positioning points, and when the three movable probes come into contact with the blades, they will send signals to the sensors connected to them through levers, and then the cross-sectional area at the throat of the engine blade (similar to a trapezoid) will be obtained through the output of the sensors and the calculation of the electrical box.

[0034] During testing, first prepare a standard part (engine blade), extend the measuring instrument into the standard part, and measure its throat area. At this time, the cross-sectional area output by the sensors of the three fixed probes and the three movable probes is the standard area. Then, install the measuring instrument into the workpiece to be tested (engine blade), compare the newly measured throat area with the aforementioned standard area, and you can know whether the throat area of ​​the workpiece to be tested meets the standard.

[0035] like Figure 6 As shown, it is a schematic diagram of the measurement cross section when three fixed probes and three movable probes are in contact with the blade throat.

[0036] A connector 3 is provided on one side of the base body 1 away from the measuring section 2. The connector 3 is used to accommodate power signal lines of the first sensor 44, the second sensor 45 and the third sensor 46. The connector 3 is a waterproof connector, which protects the wiring harness.

[0037] The base 1 is provided with a support rod 11, and the extension direction of the support rod 11 is consistent with the extension direction of the second fixed measuring element 22. During the measurement process, the support rod 11 contacts the upper blade of the blade to be measured, forming a stable support for the base 1 to ensure the reliability of the measurement result.

[0038] like Figure 2 and Figure 3 As shown, a spring piece 24 is provided at the front end of the measuring section 2, and the spring piece 24 is provided at two locations. During the measuring process, the spring piece 24 can undergo a certain elastic deformation, so that the three fixed measuring elements are in close contact with the blade to be measured, thereby improving the accuracy of the measurement.

[0039] The lower end of the measuring section 2 is provided with a stop pin 26, and the stop pin 26 is provided at two locations. When the measuring section 2 is extended into the blade throat, the stop pin 26 plays a limiting role to prevent the measuring section 2 from extending too far into the throat and affecting the measurement result.

[0040] When the utility model is in use, three fixed probes correspond to three movable probes, and the cross-sectional area at the throat of the engine blade (similar to a trapezoid) is obtained through calculation based on the measurement results of the position sensors, thereby meeting the user's requirements for fast, accurate, online and low-cost detection.

[0041] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

[0043] If the words "first", "second" and so on are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the utility model and simplifying the description. Unless otherwise stated, the above words have no special meaning.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An engine blade throat area measuring device, comprising a substrate, characterized in that: One side of the base body is a rectangular measuring section; A first fixed measuring element is disposed at the right end of the measuring section, and a second fixed measuring element and a third fixed measuring element are disposed at the upper end of the measuring section respectively; A first movable probe is disposed at the left end of the measuring section, and a second movable probe and a third movable probe are disposed at the lower end of the measuring section, wherein the first movable probe is connected to a first sensor, the second movable probe is connected to a second sensor, and the third movable probe is connected to a third sensor; The extension direction of the first fixed probe and the extension direction of the first movable probe are located on the same straight line, the extension direction of the second fixed probe and the extension direction of the second movable probe are located on the same straight line, and the extension direction of the third fixed probe and the extension direction of the third movable probe are located on the same straight line.

2. The engine blade throat area measuring device according to claim 1, characterized in that: A connector for accommodating power supply signal lines of the first sensor, the second sensor and the third sensor is arranged on a side of the base body away from the measuring section.

3. The engine blade throat area measuring device according to claim 2, characterized in that: The joint is a waterproof joint.

4. The engine blade throat area measuring device according to claim 1, characterized in that: The base is provided with a support rod in contact with the blades.

5. The engine blade throat area measuring device according to claim 1, characterized in that: A spring piece is arranged at the front end of the measuring section.

6. The engine blade throat area measuring device according to claim 1, characterized in that: A stop pin is arranged at the lower end of the measuring section.

7. The engine blade throat area measuring device according to claim 1, characterized in that: The first movable probe is connected to the first sensor via a first lever, the second movable probe is connected to the second sensor via a second lever, and the third movable probe is connected to the third sensor via a third lever.

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