Guide vane angle calibration device and calibration method

Abstract

The present invention discloses a guide vane angle calibration device, comprising a seat, a bracket extending outward from the seat, and a measuring ruler rotatably connected to one end of the bracket, wherein one end of the bracket is connected to the seat, and the other end of the bracket is rotatably connected to the measuring ruler, and a dial is provided at the rotatable connection between the measuring ruler and the bracket, and the measuring ruler is used to contact the leading edge and the trailing edge of the guide vane. The guide vane angle calibration device of the present invention has a reasonable structural design, can quickly and accurately calibrate the guide vane inlet angle, reduces labor intensity, and improves labor efficiency.

Description

Technical Field

[0001] The present invention specifically relates to a device for checking the inlet angle of a guide vane of a gas turbine, a fan, a steam turbine, etc. and a method for checking the guide vane angle by using the device. Background Art

[0002] The inlet guide vanes of gas turbines, fans, and steam turbines need to be calibrated before use to prevent the inlet guide vane angle inconsistency from affecting the properties of the intake fluid, causing excessive vibration of the equipment, and affecting the efficiency and life of the equipment. However, due to the large number of inlet guide vanes and the fact that most of them have different torsion angles, the inspection space is limited, the inlet angle calibration is difficult, the workload is large, and the accuracy is difficult to control. Summary of the invention

[0003] In view of this, in order to overcome the defects of the prior art, an object of the present invention is to provide a guide vane angle calibration device, which can conveniently realize the calibration of the guide vane angle.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A guide vane angle calibration device comprises a seat body, a bracket extending outward from the seat body, and a measuring ruler rotatably connected to one end of the bracket, wherein one end of the bracket is connected to the seat body, and the other end of the bracket is rotatably connected to the measuring ruler, a dial is provided at the rotatable connection between the measuring ruler and the bracket, and the measuring ruler is used to contact the leading edge and the trailing edge of the guide vane.

[0006] By setting up a bracket, the measuring ruler can be extended to between the guide vanes to overcome the space limitation. The measuring ruler is rotatably connected to the bracket, which is convenient for adjusting the angle. By judging whether the guide vane is in contact with the measuring ruler, it can be checked whether the guide vane reaches the preset angle, which is convenient and quick.

[0007] Preferably, the measuring ruler is provided with a leading edge line for contacting the leading edge of the guide vane and a trailing edge line for contacting the trailing edge of the guide vane, and the leading edge line and the trailing edge line are insulated from each other.

[0008] More preferably, the measuring ruler is made of insulating material, the leading edge line and the trailing edge line are conductors, two terminals are provided on the measuring ruler corresponding to the leading edge line and the trailing edge line, and a power supply and an indicator light are connected between the two terminals. When the guide vane reaches a preset angle, the leading edge line contacts the leading edge, and the trailing edge line contacts the trailing edge, and a circuit is formed between the guide vane, the leading edge line, the trailing edge line, the terminal, the power supply and the indicator light, and the indicator light is on for easy observation.

[0009] Further preferably, the terminal passes through the measuring ruler, one end of the terminal is electrically connected to the leading edge line or the trailing edge line, and the other end of the terminal is connected to a power source or an indicator light through a wire, that is, the terminal connects the power source or the indicator light to the leading edge line or the trailing edge line.

[0010] More preferably, the cross section of the measuring ruler close to the end for contacting the guide vane is a triangle, and the leading edge line or the trailing edge line is arranged at the vertex of the triangle. By setting the cross section of the triangle, it is ensured that the leading edge line and the trailing edge line are in full contact with the leading edge and the trailing edge of the guide vane, and measurement errors caused by contact of other parts will not occur.

[0011] Preferably, the seat body is provided with a clamping groove for clamping the seat body on the guide vane inlet flange ring, and the clamping groove is an arc-shaped groove matching the guide vane inlet flange ring.

[0012] More preferably, the seat body includes a first seat body and a second seat body, and the clamping groove is formed between the first seat body and the second seat body, which is used to clamp on the guide vane inlet flange ring. In some embodiments, the height of the second seat body is relatively higher to form a shape similar to a hook to hook the flange ring, so that the seat body is more firmly clamped on the flange ring, and the first seat body is correspondingly placed inside the flange ring, and the second seat body is correspondingly placed outside the flange ring. The inner side surface and the outer side surface of the seat body are both arc-shaped surfaces, so as to facilitate alignment with the flange ring and control the position of the seat body.

[0013] More preferably, the bracket is vertically arranged with respect to the base body, that is, the bracket extends vertically downward from the base body.

[0014] Preferably, the measuring ruler is provided with an indicating needle for indicating the scale of the dial, and the extending direction of the indicating needle is parallel to the extending direction of the measuring ruler. The direction of the indicating needle is the direction of the measuring ruler, and the angle indicated by the indicating needle is the angle between the measuring ruler and the bracket.

[0015] Further preferably, the scale is a circular scale, and when the guide vane angle calibration device is in use, the two scales of 0° and 180° on the circular scale are arranged in the vertical direction. When in use, the bracket extends in the vertical direction, and the 0° of the scale is also arranged in the vertical direction, that is, the 0° and 180° of the scale indicate the angle of the bracket, and by rotating the measuring ruler, the indicator needle indicates the angle of rotation of the measuring ruler relative to the bracket, which is more convenient to read and adjust.

[0016] The present invention also provides a method for calibrating the guide vane angle according to the guide vane angle calibration device, comprising the following steps:

[0017] Rotate the measuring ruler according to the preset guide vane angle and determine the angle through the dial and indicator needle;

[0018] After the power is turned on, the seat of the calibration device is clamped on the guide vane inlet flange ring through the clamping slot, and the measuring ruler contacts the guide vane;

[0019] When the leading edge line of the measuring ruler contacts the leading edge of the guide vane and the trailing edge line of the measuring ruler contacts the trailing edge of the guide vane, the indicator light comes on, the guide vane angle reaches the preset angle, and the calibration is qualified; if the indicator light fails to come on, the guide vane angle calibration fails, and the guide vane angle needs to be readjusted and calibrated again until the indicator light comes on.

[0020] The above-mentioned verification device and verification method can conveniently verify the angle of the guide vane, and the setting of the indicator light makes the verification result intuitive and clear, and the inspection is qualified when the indicator light is on.

[0021] Due to the adoption of the above technical scheme, compared with the prior art, the advantages of the present invention are: the guide vane angle calibration device of the present invention has a reasonable structural design, can quickly and accurately calibrate the guide vane inlet angle, reduces labor intensity and improves labor efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a front view of the guide vane angle calibration device according to an embodiment of the present invention;

[0024] Figure 2 A side view of a guide vane angle calibration device according to an embodiment of the present invention;

[0025] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0026] Among them: 1. measuring ruler, 2. indicating needle, 3. dial, 4. fastening bolts, 5. bracket, 6. seat body, 61. first seat body, 62. second seat body, 63. slot, 7. leading edge line, 8. trailing edge line, 9. terminal, 10. indicator light, 11. power supply, 12. wire. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] See attached Figure 1-3 The guide vane angle calibration device of this embodiment includes a seat body 6, a bracket 5 extending outward from the seat body 6, a measuring ruler 1 rotatably connected to one end of the bracket 5, and a result display assembly. One end of the bracket 5 is connected to the seat body, and the other end of the bracket 5 is rotatably connected to the measuring ruler 1 through a fastening bolt 4. A dial 3 is provided on the fastening bolt 4 at the rotation connection between the measuring ruler 1 and the bracket 5. The measuring ruler 1 is used to contact the leading edge and the trailing edge of the guide vane. The bracket 5 is vertically arranged with the seat body, that is, the bracket 5 extends vertically downward from the seat body. The leading edge and the trailing edge of the guide vane are the upper and lower edge lines of the guide vane in the length direction.

[0029] The seat body 6 is provided with a slot 63 for clamping the seat body 6 on the guide vane inlet flange ring, and the slot 63 is an arc-shaped slot matching the guide vane inlet flange ring. The seat body 6 includes a first seat body 61 and a second seat body 62, and a slot 63 is formed between the first seat body 61 and the second seat body 62, which is used to clamp on the guide vane inlet flange ring. In this embodiment, the height of the second seat body 62 is relatively higher to form a shape similar to a hook to hook the flange ring, so that the seat body 6 is more firmly clamped on the flange ring, and the first seat body 61 is correspondingly placed inside the flange ring, and the second seat body 62 is correspondingly placed outside the flange ring. The inner side and outer side of the seat body 6 are both arc-shaped surfaces, so as to facilitate alignment with the flange ring and control the position of the seat body 6.

[0030] The measuring ruler 1 is provided with an indicating needle 2 for indicating the scale of the dial 3, and the extending direction of the indicating needle 2 is parallel to the extending direction of the measuring ruler 1. The direction of the indicating needle 2 is the direction of the measuring ruler 1, and the indicating needle 2 indicates the angle between the measuring ruler 1 and the bracket 5.

[0031] The scale plate 3 is a circular scale plate 3. When the guide vane angle calibration device is in use, the two scales of 0° and 180° on the circular scale plate 3 are set in the vertical direction. When in use, the bracket 5 extends in the vertical direction, and the 0° of the scale plate 3 is also set in the vertical direction, that is, the 0° and 180° of the scale plate 3 indicate the direction of the bracket 5. By rotating the measuring ruler 1, the indicator needle 2 indicates the angle of rotation of the measuring ruler 1 relative to the bracket 5, which is more convenient for reading and adjusting the angle.

[0032] The result shows that the assembly includes a leading edge line 7, a trailing edge line 8, a terminal 9, a power supply 11 and an indicator light 10 arranged on the measuring ruler 1. Specifically, the measuring ruler 1 is provided with a leading edge line 7 for contacting the leading edge of the guide vane and a trailing edge line 8 for contacting the trailing edge of the guide vane, and the leading edge line 7 and the trailing edge line 8 are insulated. The material of the measuring ruler 1 is an insulating material, the leading edge line 7 and the trailing edge line 8 are conductors, and two terminals 9 are arranged on the measuring ruler 1 corresponding to the leading edge line 7 and the trailing edge line 8, and a power supply 11 and an indicator light 10 are connected between the two terminals 9. When the guide vane reaches a preset angle, the leading edge line 7 contacts the leading edge, the trailing edge line 8 contacts the trailing edge, and a circuit is formed between the guide vane, the leading edge line 7, the trailing edge line 8, the terminal 9, the power supply 11 and the indicator light 10, and the indicator light 10 lights up for easy observation.

[0033] The terminal 9 passes through the measuring ruler 1, one end of the terminal 9 is electrically connected to the leading edge line 7 or the trailing edge line 8, and the other end of the terminal 9 is connected to the power supply 11 or the indicator light 10 through the wire 12. That is, the terminal 9 connects the power supply 11 or the indicator light 10 to the leading edge line 7 or the trailing edge line 8.

[0034] like Figure 2 As shown, the cross section of the measuring ruler 1 in this embodiment close to the end for contacting the guide vane is a triangle, and the vertex of the triangle is provided with a leading edge line 7 or a trailing edge line 8. By providing a triangular cross section, it is ensured that the leading edge line 7 and the trailing edge line 8 are in full contact with the leading edge and the trailing edge of the guide vane, and measurement errors caused by contact of other parts will not occur.

[0035] By setting the bracket 5, the measuring ruler 1 can be extended between the guide vanes to overcome the space limitation. The measuring ruler 1 is rotatably connected with the bracket 5, which is convenient for adjusting the angle. By judging whether the guide vane is in contact with the measuring ruler 1, it can be checked whether the guide vane reaches the preset angle, which is convenient and quick. The angle of the guide vane is accurate, which reduces the vibration speed and noise of the equipment and improves the efficiency and life of the equipment.

[0036] This embodiment also provides a method for calibrating the guide vane angle based on the guide vane angle calibration device, comprising the following steps:

[0037] 1) Rotate the measuring ruler 1 according to the preset guide vane angle, and determine the angle between the measuring ruler 1 and the bracket 5 through the dial 3 and the indicator needle 2;

[0038] 2) After the power supply 11 is turned on, the base body 6 of the calibration device is clamped on the guide vane inlet flange ring through the clamping slot 63, and the measuring ruler 1 is brought into contact with the guide vane;

[0039] 3) When the leading edge line 7 of the measuring ruler 1 contacts the leading edge of the guide vane and the trailing edge line 8 of the measuring ruler 1 contacts the trailing edge of the guide vane, the indicator light 10 lights up, the guide vane angle reaches the preset angle, and the calibration is qualified; if the indicator light 10 cannot light up, the guide vane angle calibration fails, and the guide vane angle needs to be readjusted and calibrated again until the indicator light 10 lights up.

[0040] By means of the above-mentioned verification device and verification method, the angle of the guide vane can be verified very conveniently, and the setting of the indicator light 10 makes the verification result intuitive and clear, and when the indicator light 10 is on, the inspection is qualified.

[0041] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A guide vane angle calibration device, characterized in that: It comprises a seat body, a bracket extending outward from the seat body, and a measuring ruler rotatably connected to one end of the bracket, one end of the bracket is connected to the seat body, and the other end of the bracket is rotatably connected to the measuring ruler, a dial is provided at the rotatable connection between the measuring ruler and the bracket, and the measuring ruler is used to contact the leading edge and the trailing edge of the guide vane; the inner side surface and the outer side surface of the seat body are both arc-shaped surfaces; The measuring ruler is provided with a leading edge line for contacting the leading edge of the guide vane and a trailing edge line for contacting the trailing edge of the guide vane, and the leading edge line and the trailing edge line are insulated from each other; the material of the measuring ruler is an insulating material, the leading edge line and the trailing edge line are conductors, and two binding posts are provided on the measuring ruler corresponding to the leading edge line and the trailing edge line, and a power supply and an indicator light are connected between the two binding posts.

2. The guide vane angle calibration device according to claim 1, characterized in that: The terminal passes through the measuring ruler, one end of the terminal is electrically connected to the leading edge line or the trailing edge line, and the other end of the terminal is connected to a power source or an indicator light through a wire.

3. The guide vane angle calibration device according to claim 1, characterized in that: The cross section of the measuring ruler close to the end for contacting the guide vane is triangular, and the leading edge line or the trailing edge line is arranged on the vertex of the triangle.

4. The guide vane angle calibration device according to claim 1, characterized in that: The seat body is provided with a clamping groove for clamping the seat body on the guide vane inlet flange ring, and the clamping groove is an arc-shaped groove matching the guide vane inlet flange ring.

5. The guide vane angle calibration device according to claim 4, characterized in that: The bracket is arranged vertically to the seat body.

6. The guide vane angle calibration device according to any one of claims 1 to 5, characterized in that: The measuring ruler is provided with an indicating needle for indicating the scale of the dial, and the extending direction of the indicating needle is parallel to the extending direction of the measuring ruler.

7. The guide vane angle calibration device according to claim 6, characterized in that: The scale plate is a circular scale plate. When the guide vane angle calibration device is in use, two scales of 0° and 180° on the circular scale plate are arranged in the vertical direction.

8. A method for calibrating a guide vane angle according to the guide vane angle calibration device according to any one of claims 1 to 7, characterized in that: The verification method includes the following steps: Rotate the measuring ruler according to the preset guide vane angle and determine the angle through the dial and indicator needle; After the power is turned on, the seat of the calibration device is clamped on the guide vane inlet flange ring through the clamping slot, and the measuring ruler contacts the guide vane; When the leading edge line of the measuring ruler contacts the leading edge of the guide vane and the trailing edge line of the measuring ruler contacts the trailing edge of the guide vane, the indicator light comes on, the guide vane angle reaches the preset angle, and the calibration is qualified; if the indicator light fails to come on, the guide vane angle calibration fails, and the guide vane angle needs to be readjusted and calibrated again until the indicator light comes on.

Images