A tool for measuring the angle of the flat platform of the stationary blade petiole

Abstract

The invention discloses a tool for measuring the angle of a stator blade stalk flat plate. For the technical problem of measuring the angle of a stator blade stalk flat plate, a conversion process is required through projection coplanarity and angle superposition. The measuring tool includes an angle ruler (including a main ruler and a secondary ruler), a knife ruler device, a bracket, a column, a support plate, a bottom plate, an angle positioning block, a replaceable flat pin sleeve and a guide sleeve. The invention has the characteristics of easy use, intuitive detection and accurate results.

Description

Technical Field

[0001] The invention relates to a measurement technology of skew angles, which is used for measuring the angle of a stationary blade petiole flat platform. Background Art

[0002] The angle of the stator blade shank flat plate directly affects the performance of the axial flow fan equipment. Figure 3 The angle between the center plane of the petiole flat plate and the chord plane of the blade is the angle of the petiole flat plate of the stationary blade. The sizes of the petiole flat plates of various specifications of stationary blades are different. Therefore, special measuring tools are required to measure the angle of the petiole flat plate.

[0003] The existing technology can only use three-coordinate detection equipment to measure the petiole flat base angle, but it is limited by the fixed position and the operation of professional detection technicians. It is not only abstract and inefficient, but also has poor consistency in measurement results. It is not suitable for the work requirement of quickly measuring the petiole flat base angle of static blades at any time on site. Summary of the invention

[0004] In view of the above problems existing in the prior art, the present invention provides an angle measurement tool which is easy to use, intuitive to detect and produces accurate results.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The invention provides a tool for measuring the angle of a stationary blade stalk flat plate, which comprises an angle ruler, a ruler device, a bracket, a column, a support plate, a guide sleeve, a bottom plate, an angle positioning block, a positioning pin, a replaceable flat pin sleeve and a base; the angle ruler comprises a secondary ruler and a main ruler.

[0007] The angle ruler has a display accuracy of 10' and is used to measure the angle of the chordal surface of the measured static blade profile; different angle scales are evenly marked on the secondary scale and the main scale, wherein the main scale has scale lines of 1° per grid, and the secondary scale has corresponding angle scale lines of 1°10' per grid.

[0008] The knife ruler device is composed of a knife ruler, a knife holder and a top screw, and is used to determine the adjustment position of the chord surface of the measured static blade.

[0009] The bracket is used for supporting and fastening the main ruler.

[0010] The column is used as a coordinate axis for angular translation projection.

[0011] The support plate is used to support the stator blade to be tested to stand upright and stably through replaceable guide sleeves of different specifications.

[0012] The bottom plate is used as a reference projection surface, and two positioning pins are used to fix the angle positioning block.

[0013] The angle positioning block is used to fix the replaceable flat pin sleeve, which has a fixed angle conversion function and can be superimposed with the blade profile chord angle measured by the angle ruler to determine the angle of the measured static blade petiole flat platform.

[0014] Compared with the prior art, the present invention has the following technical effects:

[0015] 1. The angle ruler of the device of the present invention [including auxiliary ruler and main ruler] has a display accuracy of 10' and is used to measure the angle of the chordal surface of the measured static blade.

[0016] 2. A positioning device for the stationary blade to be measured is set up, including an angle positioning block, a replaceable flat pin sleeve and other parts. The angle positioning block on the positioning device has a fixed angle conversion function, which can be projected and superimposed with the angle of the blade chord surface measured by the angle ruler to determine the angle of the blade shank flat platform of the stationary blade to be measured.

[0017] 3. The ruler device can accurately display the adjustment position of the chord surface of the static blade.

[0018] 4. The bracket is set up to both support and secure the position of the main scale adjustment.

[0019] 5. The base plate is set up as a reference projection surface and is used to fix the angle positioning block. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the measuring tool;

[0021] Figure 2 It is a schematic diagram of the combined structure of the base plate, the angle positioning block and the replaceable flat pin sleeve;

[0022] Figure 3 middle, Figure 3 A is a schematic diagram of the angle of the petiole flat platform of the static blade; Figure 3 B is a schematic diagram of the structure of the stator blade under test.

[0023] The numbers in the figure represent: 1-secondary ruler, 2-main ruler, 3-knife ruler device, 4-bracket, 5-column, 6-support plate, 7-guide sleeve, 8-bottom plate, 9-angle positioning block, 10-positioning pin, 11-replaceable flat pin sleeve, 12-base, 13-stalk of static blade, 14-blade of static blade, 15-blade profile chord surface, 16-center surface of flat platform;

[0024] 3-1—ruler, 3-2—knife holder, 3-3—top screw.

[0025] The scheme of the present invention is further explained and illustrated in detail below in conjunction with the accompanying drawings and specific implementation methods. DETAILED DESCRIPTION

[0026] Follow the above technical solution, combined with the attached Figure 1-3 , specific embodiments of the present invention are given to further explain the technical solution of the present invention.

[0027] It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0028] Example---For measuring the angle of the blade stalk flat plate:

[0029] The present embodiment provides a tool for measuring the angle of a stationary blade stalk flat plate, which includes an angle ruler, a knife ruler device 3, a bracket 4, a column 5, a support plate 6, a guide sleeve 7, a base plate 8, an angle positioning block 9, a positioning pin 10, a replaceable flat pin sleeve 11 and a base 12; the angle ruler includes a secondary ruler 1 and a main ruler 2.

[0030] The angle ruler has a display accuracy of 10' and is used to measure the angle of the chordal surface of the measured static blade profile; different angle scales are evenly marked on the secondary scale 1 and the main scale 2, wherein the main scale has scale lines of 1° per grid, and the secondary scale has corresponding angle scale lines of 1°10' per grid.

[0031] The ruler device 3 is composed of a ruler 3-1, a tool holder 3-2 and a top screw 3-3, and is used to determine the adjustment position of the chord surface of the measured static blade.

[0032] The bracket 4 is used to support and fasten the main ruler 2 .

[0033] The column 5 is used as a coordinate axis for angular translation projection.

[0034] The support plate 6 is used to support the stator blade to be measured to stand upright and stably through a replaceable guide sleeve 7 of different specifications.

[0035] The bottom plate 8 is used as a reference projection surface, and two positioning pins 10 are used to fix the angle positioning block 9 .

[0036] The angle positioning block 9 is used to fix the replaceable flat pin sleeve 11, which has a fixed angle conversion function and can be superimposed with the blade angle measured by the angle ruler to determine the angle of the measured stationary blade petiole flat platform.

[0037] The specific steps for measuring the angle of the stator blade petiole flat platform using this measuring tool are as follows:

[0038] Step 1: Select and assemble the corresponding guide sleeve and positioning sleeve according to the size of the measured stator blade petiole and flat table, and adjust and fix the height position of the support plate and angle ruler appropriately according to the length of the petiole.

[0039] Step 2: Lower and install the stationary blade to be measured, rotate it appropriately and use the positioning pin to fix the angle positioning block so that the angle of the blade chord surface is within the angle range that can be measured by the angle scale (including the auxiliary scale and the main scale).

[0040] Step 3: Adjust the main ruler and the knife ruler device so that the blade of the knife ruler fits the chord line on the blade chord surface. Now you can use the bracket to tighten the main ruler.

[0041] Step 4: Based on the rotation angle of the angle positioning block and the angle of the blade chordal surface measured by the angle ruler, the final reading result of the blade petiole flat platform angle of the measured static blade can be determined by superposition.

Claims

1. A tool for measuring the angle of a stationary blade stalk flat plate, characterized in that: The measuring tool comprises an angle ruler, a ruler device (3), a bracket (4), a column (5), a support plate (6), a guide sleeve (7), a bottom plate (8), an angle positioning block (9), a positioning pin (10), a replaceable flat pin sleeve (11) and a base (12); the angle ruler comprises a secondary ruler (1) and a main ruler (2); The angle ruler has a display accuracy of 10' and is used to measure the angle of the chordal plane of the measured static blade; different angle scales are evenly marked on the auxiliary ruler (1) and the main ruler (2), wherein the main ruler has scales of 1° per grid, and the auxiliary ruler has corresponding angle scales of 1°10' per grid; The knife ruler device (3) is composed of a knife ruler (3-1), a knife holder (3-2) and a top screw (3-3); the knife ruler device (3) is fixed on the main ruler (2) through the knife holder (3-2); when the main ruler is rotated so that the knife ruler (3-1) fits the blade profile chord surface, the top screw (3-3) can be used to fix and determine the adjustment position of the blade profile chord surface of the stationary blade to be measured; The angle positioning block (9) is used to fix the replaceable flat pin sleeve (11), and has a fixed angle conversion function, and can be used to superimpose the readings of the blade profile chord angle measured by the angle ruler to determine the angle of the blade stalk flat platform of the measured stationary blade.

2. The angle measuring tool according to claim 1, characterized in that: The bracket (4) is used to support and fasten the main scale (2); the bracket (4) is fixedly connected to the secondary scale (1).

3. The angle measuring tool according to claim 1, characterized in that: The column (5) is used as a coordinate axis for angular translation projection.

4. The angle measuring tool according to claim 1, characterized in that: The support plate (6) is used to support the stationary blade to be measured to stand upright and stably through a replaceable guide sleeve (7) of different specifications.

5. The angle measuring tool according to claim 1, characterized in that: The bottom plate (8) is used as a reference projection surface, and two positioning pins (10) are used to fix the angle positioning block (9).

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