Method and device for measuring angle of adjustable guide vane at inlet of gas turbine

Abstract

The invention provides a gas turbine inlet adjustable guide vane angle measuring method and measuring device. The method for measuring the angle of the inlet adjustable guide vane of the gas turbine comprises the following steps: S1, taking at least one of a rotating shaft, a fixed part and a rocker arm of the inlet adjustable guide vane as a rotating part; s2, after the inlet adjustable guide vane assembly is debugged, when an inlet adjustable guide vane rotates to a set angle, the angle corresponding to a rotating piece is defined as a standard angle, and the set angle of the inlet adjustable guide vane comprises at least one of a full-open angle, a full-closed angle and a minimum full-speed angle; and S3, when the inlet adjustable guide vane assembly is overhauled, after a command for controlling the inlet adjustable guide vane to rotate to a set angle is given, the measurement angle of the rotating piece is compared with the standard angle, so that whether the inlet adjustable guide vane rotates to the set angle or not is judged. According to the gas turbine inlet adjustable guide vane angle measurement method, the measurement difficulty can be reduced, and the measurement and debugging efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of gas turbines, and in particular to a method and a device for measuring the angle of an adjustable guide vane at an inlet of a gas turbine. Background Art

[0002] As an important part of the auxiliary system of the gas turbine, the gas turbine inlet adjustable guide vane controls the intake angle at low speed during the start-up and shutdown process to prevent compressor surge. In the combined cycle with partial gas turbine load, the intake flow rate is reduced by closing the inlet adjustable guide vane angle, the exhaust temperature of the gas turbine is increased, and the thermal efficiency of the overall combined cycle is improved. The angle of the inlet adjustable guide vane plays an important role in the start-up and load adjustment of the gas turbine. If the angle of the inlet adjustable guide vane changes or shifts during installation or operation, it will directly affect the intake control of the gas turbine inlet. In severe cases, the gas turbine will stall or surge, threatening the normal operation of the gas turbine. In the related art, the gas turbine inlet adjustable guide vane is located at the gas turbine compressor airflow inlet. After the gas turbine is debugged or overhauled, the technician needs to enter the inlet volute through the manhole door at the gas turbine inlet, enter the gas turbine, and directly use measuring tools, measuring rulers, etc. to measure the angle of the inlet adjustable guide vane. However, during debugging or operation, it is impossible to open the manhole door to enter the gas turbine inlet to directly measure the angle. When it is necessary to determine whether the fully open, fully closed and minimum full speed angle (minimum full speed no-load angle) of the gas turbine inlet adjustable guide vane are correct and whether they deviate from the design angle, the only way to judge the condition of the inlet adjustable guide vane is to stop the gas turbine operation or commissioning work, open the inlet manhole door, and enter the gas turbine inlet volute for measurement after the gas turbine is shut down. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides a method and a device for measuring the angle of an adjustable guide vane at an inlet of a gas turbine.

[0004] The gas turbine inlet adjustable guide vane angle measurement method of the embodiment of the present invention comprises a cylinder body and an inlet adjustable guide vane assembly, the inlet adjustable guide vane assembly comprises a driving part, a rotating ring and a plurality of inlet adjustable guide vanes rotatably arranged on the rotating ring, the rotating ring is arranged on the cylinder body, the rotating shaft of the inlet adjustable guide vane is rotatably arranged on the rotating ring, the rocker arm of the driving part is connected to the rotating shaft of the inlet adjustable guide vane through a fixing part, the rocker arm can drive the inlet adjustable guide vane to rotate, and the gas turbine inlet adjustable guide vane angle measurement method comprises the following steps:

[0005] S1. Using at least one of the rotating shaft of the inlet adjustable guide vane, the fixing member and the rocker arm as a rotating member;

[0006] S2. After the inlet adjustable guide vane assembly is debugged, when the inlet adjustable guide vane is rotated to a set angle, the angle corresponding to the rotating member is defined as a standard angle, and the set angle of the inlet adjustable guide vane includes at least one of a fully open angle, a fully closed angle, and a minimum full speed angle;

[0007] S3. When the inlet adjustable guide vane assembly is overhauled, after a command is issued to control the inlet adjustable guide vane to rotate to a set angle, the measured angle of the rotating part is compared with the standard angle to determine whether the inlet adjustable guide vane has rotated to the set angle.

[0008] In some embodiments, in step S2, after the inlet adjustable guide vane assembly is debugged,

[0009] When the inlet adjustable guide vane is rotated to a set full-close angle, the angle corresponding to the rotating member is defined as a full-close standard angle;

[0010] When the inlet adjustable guide vane is rotated to a set full-open angle, the angle corresponding to the rotating member is defined as a full-open standard angle;

[0011] When the inlet adjustable guide vane is rotated to a set minimum full-speed angle, the angle corresponding to the rotating member is defined as the minimum full-speed standard angle;

[0012] In step S3, when the inlet adjustable guide vane assembly is overhauled,

[0013] After issuing a command to control the inlet adjustable guide vane to rotate to a set full-close angle, comparing the measured angle of the rotating member with the full-close standard angle to determine whether the inlet adjustable guide vane has rotated to the set full-close angle;

[0014] After issuing a command to control the inlet adjustable guide vane to rotate to a set full-open angle, comparing the measured angle of the rotating member with the full-open standard angle to determine whether the inlet adjustable guide vane rotates to the set full-open angle;

[0015] After a command is issued to control the inlet adjustable guide vanes to rotate to a set minimum full-speed angle, the measured angle of the rotating member is compared with the minimum full-speed standard angle to determine whether the inlet adjustable guide vanes rotate to the set minimum full-speed angle.

[0016] In some embodiments, in step S1, the fixing member is a fixing screw located outside the rotating ring, the fixing screw is connected to the rotating shaft of the inlet adjustable guide vane and can rotate along with the rotating shaft of the inlet adjustable guide vane, and the rotation angle of the rotating member is measured by measuring the rotation position of the fixing screw;

[0017] In the step S2, after the inlet adjustable guide vane assembly is debugged, when the inlet adjustable guide vane is rotated to a set angle, the angle corresponding to the fixing screw is defined as a standard angle;

[0018] In step S3, when the inlet adjustable guide vane assembly is overhauled, after a command is issued to control the inlet adjustable guide vane to rotate to a set angle, the inlet adjustable guide vane compares the measured angle of the fixing screw with the standard angle to determine whether the inlet adjustable guide vane has rotated to the set angle.

[0019] In some embodiments, a flange adjacent to the rotating ring is provided at the inlet of the cylinder body, and the surface of the flange facing the rotating ring is used as a positioning surface for a measuring device. The measuring device is fitted onto the positioning surface so that the measuring device can measure the rotational position of the fixing screw.

[0020] The present invention also proposes a measuring device suitable for the above-mentioned gas turbine inlet adjustable guide vane angle measurement method, comprising:

[0021] A measuring plate, wherein a measuring portion is provided at a first end in a width direction of the measuring plate, and the measuring portion has a standard measuring end face. During testing, the thickness direction of the measuring plate is consistent with the extension direction of the rotation axis of the fixing screw, and the width direction of the measuring plate is consistent with the length direction of the cylinder body. When the inlet adjustable guide vane after debugging is rotated to a set angle, the fixing screw can fit with the standard measuring end face;

[0022] Wherein, the standard measurement end face comprises at least one of a fully closed standard measurement end face, a fully open standard measurement end face and a minimum full-speed standard measurement end face;

[0023] When the inlet adjustable guide vane after debugging is rotated to the fully closed angle, the fixing screw can fit with the fully closed standard measurement end face;

[0024] When the inlet adjustable guide vane after debugging is rotated to a fully open angle, the fixing screw can fit with the fully open standard measurement end face;

[0025] When the inlet adjustable guide vane after debugging rotates to the minimum full-speed angle, the fixing screw can fit with the minimum full-speed standard measurement end face.

[0026] In some embodiments, the measuring part includes an adjustment plate, which is rotatably disposed on the measuring plate. One end face of the adjustment plate in the circumferential direction is the standard measurement end face. The adjustment plate can be rotated so that the standard measurement end face can constitute one of the fully closed standard measurement end face, the fully open standard measurement end face and the minimum full-speed standard measurement end face.

[0027] In some embodiments, the measuring part further includes a dial, the adjusting plate is provided with a pointer cooperating with the dial, and the dial is provided with a full-closed scale line, a full-open scale line and a minimum full-speed scale line;

[0028] When the pointer of the adjustment plate points to the fully closed scale line on the dial, the standard measurement end face constitutes the fully closed standard measurement end face;

[0029] When the pointer of the adjustment plate points to the fully-open scale line on the dial, the standard measurement end face constitutes the fully-open standard measurement end face;

[0030] When the pointer of the adjustment plate points to the minimum full-speed scale line on the dial, the standard measurement end surface constitutes the minimum full-speed standard measurement end surface.

[0031] In some embodiments, the standard measurement end face includes the fully closed standard measurement end face, the fully open standard measurement end face, and the minimum full-speed standard measurement end face;

[0032] There are a plurality of the measurement plates, and / or the measurement portion of each measurement plate has a plurality of the standard measurement end surfaces.

[0033] In some embodiments, the measurement board includes a fully closed measurement board, a fully open measurement board, and a minimum full speed measurement board;

[0034] The standard measurement end face of the fully closed measurement plate is the fully closed standard measurement end face;

[0035] The standard measurement end face of the fully-open measurement plate is the fully-open standard measurement end face;

[0036] The standard measurement end face of the minimum full-speed measurement plate is the minimum full-speed standard measurement end face.

[0037] In some embodiments, the gas turbine inlet adjustable guide vane angle measuring device includes a fixed seat and a length adjustment device, the fixed seat has a positioning end and a connecting end facing away from each other in the length direction of the cylinder body, the end face of the positioning end is perpendicular to the length direction of the cylinder body, the end face of the positioning end can be fitted with the positioning surface on the cylinder body, the second end of the measuring plate in the width direction is connected to the connecting end of the fixed seat through the length adjustment device, and the length adjustment device is used to adjust the distance between the measuring plate and the fixed seat in the length direction of the cylinder body.

[0038] The beneficial effect of the present invention is that the actual rotation angle of the rotating member is measured to indirectly measure the rotation angle of the inlet adjustable guide vane, so as to determine the rotation position of the inlet adjustable guide vane, thereby reducing the measurement difficulty and improving the measurement and debugging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of a gas turbine inlet adjustable guide vane angle measuring device according to an embodiment of the present invention.

[0040] Figure 2 Yes, this is a schematic diagram of a gas turbine.

[0041] Figure 3 Schematic diagram of an inlet adjustable guide vane assembly according to an embodiment of the present invention.

[0042] Figure 4 1 is a diagram of the use status of the gas turbine inlet adjustable guide vane angle measuring device according to an embodiment of the present invention.

[0043] Figure 5 is a schematic diagram of a fully open measurement plate according to an embodiment of the present invention.

[0044] Figure 6 is a schematic diagram of a minimum full-speed measurement board according to an embodiment of the present invention.

[0045] Figure 7 Schematic diagram of a fully closed measurement board according to an embodiment of the present invention.

[0046] Figure numerals: 1. cylinder body, 2. rotating ring, 3. inlet adjustable guide vane, 4. rotating shaft, 5. rocker arm, 6. fixing part, 7. measuring plate, 8. measuring part, 9. standard measuring end face, 10. adjusting plate, 11. dial, 12. pointer, 13. fully closed scale line, 14. fully open scale line, 15. minimum full speed scale line, 16. fixing seat, 17. length adjustment device, 18. fully closed measuring plate, 19. fully open measuring plate, 20. minimum full speed measuring plate. DETAILED DESCRIPTION

[0047] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0048] The following describes a method for measuring the angle of an adjustable guide vane at the inlet of a gas turbine according to an embodiment of the present invention with reference to the accompanying drawings. Figures 1 to 7As shown, the gas turbine includes a cylinder body 1 and an inlet adjustable guide vane assembly. The inlet adjustable guide vane assembly includes a driving part, a rotating ring 2 and a plurality of inlet adjustable guide vanes 3 rotatably arranged on the rotating ring 2. The rotating ring 2 is arranged on the cylinder body 1. The rotating shaft 4 of the inlet adjustable guide vane 3 is rotatably arranged on the rotating ring 2. The rocker arm 5 of the driving part is connected to the rotating shaft 4 of the inlet adjustable guide vane 3 through a fixing part 6. The rocker arm 5 can drive the inlet adjustable guide vane 3 to rotate. Specifically, a part of the rotating shaft 4 of the inlet adjustable guide vane 3, the fixing part 6 and the rocker arm 5 of the driving part are located outside the cylinder body 1. The fixing part 6 can rotate with at least one of the rotating shaft 4 of the inlet adjustable guide vane 3 and the rocker arm 5 of the driving part.

[0049] The method for measuring the angle of adjustable guide vanes at the gas turbine inlet according to an embodiment of the present invention comprises the following steps:

[0050] S1. At least one of the rotating shaft 4, the fixing part 6 and the rocker arm 5 of the inlet adjustable guide vane 3 is used as a rotating part. Specifically, when the inlet adjustable guide vane 3 rotates, each of the rotating shaft 4, the fixing part 6 and the rocker arm 5 of the inlet adjustable guide vane 3 will rotate, and the rotation angle of the inlet adjustable guide vane 3 can be calculated by measuring the rotation angle of each of the rotating shaft 4, the fixing part 6 and the rocker arm 5 of the adjustable guide vane 3, and the position of the inlet adjustable guide vane 3 can be calculated by measuring the position of each of the rotating shaft 4, the fixing part 6 and the rocker arm 5 of the adjustable guide vane 3. Using at least one of the rotating shaft 4, the fixing part 6 and the rocker arm 5 of the inlet adjustable guide vane 3 as a rotating part can facilitate the calculation of the rotation angle (position) of the inlet adjustable guide vane 3 according to the rotation angle (position) of the rotating part.

[0051] S2. After the inlet adjustable guide vane assembly is debugged, when the inlet adjustable guide vane 3 is rotated to the set angle, the angle corresponding to the rotating part is defined as the standard angle, and the angle set for the inlet adjustable guide vane 3 includes at least one of the fully open angle, the fully closed angle, and the minimum full speed angle. Specifically, after the inlet adjustable guide vane assembly is debugged, the control system can control the inlet adjustable guide vane 3 to rotate to the set angle after issuing a command. At this moment, the angle corresponding to the rotating part and the set angle of the inlet adjustable guide vane 3 is the standard angle. That is, when the rotating part rotates to the standard angle (position), it can be determined that the inlet adjustable guide vane 3 rotates to the set angle (position).

[0052] The full-open angle is the opening of the inlet adjustable guide vane 3 in the high-load or combined cycle mode of the gas turbine, the full-close angle is the opening of the inlet adjustable guide vane 3 when the gas turbine is started or shut down, and the minimum full-speed angle is the minimum opening at the rated speed of the gas turbine. The full-open angle, the full-close angle and the minimum full-speed angle are several important openings of the inlet adjustable guide vane 3. By measuring at least one of the full-open angle, the full-close angle and the minimum full-speed angle, it can be determined whether the inlet adjustable guide vane 3 needs to be re-debugged.

[0053] S3. When the inlet adjustable guide vane assembly is overhauled, after issuing a command to control the inlet adjustable guide vane 3 to rotate to a set angle, the measured angle of the rotating part is compared with the standard angle to determine whether the inlet adjustable guide vane 3 has rotated to the set angle. Specifically, when the inlet adjustable guide vane assembly is overhauled, a command is first issued to rotate the inlet adjustable guide vane 3 to a set angle, and then the rotation angle after rotation is measured. If the measured angle of the rotating part is the same as the standard angle, it can be determined that the inlet adjustable guide vane 3 has rotated to the set angle. If the measured angle of the rotating part is different from the standard angle, it can be determined that after the command is issued, the inlet adjustable guide vane 3 cannot be rotated to the set angle and needs to be re-debugged.

[0054] The gas turbine inlet adjustable guide vane angle measurement method according to the embodiment of the present invention measures the actual rotation angle of the rotating part to indirectly measure the rotation angle of the inlet adjustable guide vane 3 so as to determine the rotation position of the inlet adjustable guide vane 3. Compared with entering the intake volute through the manhole door at the inlet of the gas turbine, entering the interior of the gas turbine directly uses measuring tools, measuring rulers, etc. to measure the angle of the inlet adjustable guide vane. The gas turbine inlet adjustable guide vane angle measurement method according to the embodiment of the present invention can reduce the measurement difficulty and improve the measurement and debugging efficiency.

[0055] In some embodiments, in step S2, after the inlet adjustable guide vane assembly is debugged,

[0056] When the inlet adjustable guide vane 3 is rotated to the set full-close angle, the angle corresponding to the rotating member is defined as the full-close standard angle, that is, when the rotating member is located at the full-close standard angle, the inlet adjustable guide vane 3 is rotated to the set full-close angle;

[0057] When the inlet adjustable guide vane 3 is rotated to the set full-open angle, the angle corresponding to the rotating member is defined as the full-open standard angle, that is, when the rotating member is located at the full-open standard angle, the inlet adjustable guide vane 3 is rotated to the set full-open angle;

[0058] When the inlet adjustable guide vane 3 is rotated to the set minimum full-speed angle, the angle corresponding to the rotating part is defined as the minimum full-speed standard angle, that is, when the rotating part is located at the position of the minimum full-speed standard angle, the inlet adjustable guide vane 3 is rotated to the set minimum full-speed angle;

[0059] In step S3, when the inlet adjustable guide vane assembly is overhauled,

[0060] After issuing a command to control the inlet adjustable guide vane 3 to rotate to the set full-close angle, the measured angle of the rotating member is compared with the full-close standard angle to determine whether the inlet adjustable guide vane 3 is rotated to the set full-close angle. If the measured angle of the rotating member is the same as the full-close standard angle, it can be determined that the inlet adjustable guide vane 3 is rotated to the set full-close angle. If the measured angle of the rotating member is different from the full-close standard angle, it can be determined that the inlet adjustable guide vane 3 is not rotated to the set full-close angle.

[0061] After issuing a command to control the inlet adjustable guide vane 3 to rotate to the set full-open angle, the measured angle of the rotating member is compared with the full-open standard angle to determine whether the inlet adjustable guide vane 3 is rotated to the set full-open angle. If the measured angle of the rotating member is the same as the full-open standard angle, it can be determined that the inlet adjustable guide vane 3 is rotated to the set full-open angle. If the measured angle of the rotating member is different from the full-open standard angle, it can be determined that the inlet adjustable guide vane 3 is not rotated to the set full-open angle.

[0062] After a command is issued to control the inlet adjustable guide vane 3 to rotate to the set minimum full-speed angle, the measured angle of the rotating part is compared with the minimum full-speed standard angle to determine whether the inlet adjustable guide vane 3 has rotated to the set minimum full-speed angle. If the measured angle of the rotating part is the same as the minimum full-speed standard angle, it can be determined that the inlet adjustable guide vane 3 has rotated to the set minimum full-speed angle. If the measured angle of the rotating part is different from the minimum full-speed standard angle, it can be determined that the inlet adjustable guide vane 3 has not rotated to the set minimum full-speed angle.

[0063] For example, when the inlet adjustable guide vane 3 is rotated to the set fully closed angle, the position of the inlet adjustable guide vane 3 can be used as the initial position of the inlet adjustable guide vane 3 (at this moment, the rotation angle of the adjustable guide vane 3 can be regarded as 0°), and the position of the rotating part at this moment can be used as the initial position of the rotating part (at this moment, the rotation angle of the rotating part can be regarded as 0°).

[0064] In some embodiments, in step S1, the fixing member 6 is a fixing screw located outside the rotating ring 2 (cylinder body 1), the fixing screw is connected to the rotating shaft 4 of the inlet adjustable guide vane 3 and can rotate with the rotating shaft 4 of the inlet adjustable guide vane 3, and the rotation angle of the rotating member is measured by measuring the rotation position of the fixing screw. Specifically, the fixing screw rotates synchronously with the rotating shaft 4, and the end of the fixing screw away from the rotating shaft 4 is a flat plate-like structure. The side surface of the flat plate-like structure of the fixing screw is easy to observe and measure when rotating, and can be used as a measuring surface. It is convenient to measure the rotation angle (rotation position), and the rotation angle of the fixing screw can be measured by measuring the rotation position of the flat plate-like structure of the fixing screw, thereby reducing the difficulty of measurement.

[0065] In step S2, after the inlet adjustable guide vane assembly is debugged, when the inlet adjustable guide vane 3 is rotated to a set angle, the angle corresponding to the fixing screw is defined as the standard angle. Specifically, when the inlet adjustable guide vane 3 is rotated to a set angle, the angle of the side surface of the (flat) plate-like structure of the fixing screw can be measured to determine the standard angle of the fixing screw.

[0066] In step S3, when the inlet adjustable guide vane assembly is overhauled, after a command is issued to control the inlet adjustable guide vane 3 to rotate to a set angle, the measured angle of the fixing screw is compared with the standard angle to determine whether the inlet adjustable guide vane 3 rotates to the set angle. That is, after a movement command is issued, the angle (position) of the side surface of the plate-like structure of the fixing screw is measured. If the measured angle is the standard angle, the angle corresponding to the fixing screw is the standard angle, and then it is determined that the inlet adjustable guide vane 3 rotates to the set angle.

[0067] In some embodiments, a flange adjacent to the rotating ring 2 is provided at the inlet of the cylinder body 1, and the surface of the flange facing the rotating ring 2 is used as the positioning surface of the measuring device, and the measuring device is fitted with the positioning surface so that the measuring device can measure the rotation position of the fixing screw. Specifically, when measuring the rotating member 6 (fixing screw), the flange adjacent to the rotating ring 2 on the cylinder body 1 can be selected as the positioning member, and the surface of the flange facing the rotating ring 2 is used as the positioning surface of the measuring device, so as to facilitate the positioning of the measuring device. The surface of the flange facing the rotating ring 2 is perpendicular to the length direction of the cylinder body 1.

[0068] The present invention further proposes a measuring device suitable for the method for measuring the angle of adjustable guide vanes at an inlet of a gas turbine according to an embodiment of the present invention. The measuring device for measuring the angle of adjustable guide vanes at an inlet of a gas turbine according to an embodiment of the present invention comprises a measuring plate 7 .

[0069] The first end in the width direction of the measuring plate 7 is provided with a measuring portion 8, and the measuring portion 8 has a standard measuring end face 9, and the standard measuring end face 9 of the measuring portion 8 can form an angle with the end face of one end in the width direction of the measuring plate 7. During the test, the thickness direction of the measuring plate 7 is consistent with the extension direction of the rotation axis of the fixing screw, that is, it is consistent with the axial direction of the rotating shaft 4 connected to the fixing screw and the inlet adjustable guide vane 3, so that the measuring plate 7 can be perpendicular to the rotating shaft 4 and the inlet adjustable guide vane 3; the width direction of the measuring plate 7 is consistent with the length direction of the cylinder body 1, so that the measuring plate 7 is located in the correct measurement position.

[0070] When the inlet adjustable guide vane 3 after debugging is rotated to the set angle, the fixing screw can fit with the standard measurement end face 9. Specifically, the standard measurement end face 9 is used to measure the rotation angle (position) of the fixing screw (rotating part), so as to determine whether the angle corresponding to the fixing screw (rotating part) is the standard angle, and then determine whether the inlet adjustable guide vane 3 after debugging is rotated to the set angle. If the fixing screw (the side surface in the circumferential direction) fits with the standard measurement end face 9, it is determined that the angle corresponding to the fixing screw (rotating part) is the standard angle, and then determine that the inlet adjustable guide vane 3 is rotated to the set angle. If an angle is formed between the fixing screw (the side surface in the circumferential direction) and the standard measurement end face 9, it indicates that the angle corresponding to the fixing screw (rotating part) is not the standard angle, and then determine that the inlet adjustable guide vane 3 after debugging has not been rotated to the set angle.

[0071] During the test, the position of the measuring plate 7 is first adjusted so that the width direction of the measuring plate 7 is consistent with the length direction of the cylinder body 1, and the thickness direction of the measuring plate 7 is consistent with the extension direction of the rotation axis of the fixing screw, so that the measuring plate 7 is located in the correct measurement position, so that the standard measurement end face 9 can be used as the correct measurement end face. At this moment, the fixing screw can be located within the angle between the standard measurement end face 9 of the measuring part 8 and the first end of the measuring plate 7, and the measuring plate 7 is moved in the length direction of the measuring plate 7 so that the standard measurement end face 9 abuts against the fixing screw. If the fixing screw (the side surface in the circumferential direction) is in contact with the standard measurement end face 9 (coplanar), it indicates that the angle corresponding to the fixing screw (rotating part) is the standard angle, and then it is judged that the inlet adjustable guide vane 3 after debugging is rotated to the set angle; if the fixing screw (the side surface in the circumferential direction) forms an angle with the standard measurement end face 9 (not coplanar), it indicates that the angle corresponding to the fixing screw (rotating part) is not the standard angle, and then it is judged that the inlet adjustable guide vane 3 after debugging is not rotated to the set angle.

[0072] The standard measurement end face 9 includes at least one of a fully closed standard measurement end face, a fully open standard measurement end face, and a minimum full speed standard measurement end face. When the inlet adjustable guide vane 3 after debugging is rotated to a fully closed angle, the fixing screw can fit with the fully closed standard measurement end face; when the inlet adjustable guide vane 3 after debugging is rotated to a fully open angle, the fixing screw can fit with the fully open standard measurement end face; when the inlet adjustable guide vane 3 after debugging is rotated to a minimum full speed angle, the fixing screw can fit with the minimum full speed standard measurement end face.

[0073] That is to say, by setting the fully closed standard measuring end face, the fully open standard measuring end face and the minimum full speed standard measuring end face on the measuring part 8, it is possible to determine whether the inlet adjustable guide vane 3 is rotated to the fully closed angle, the fully open angle and the minimum full speed angle.

[0074] like Figure 1 and Figure 4As shown, in some embodiments, the measuring portion 8 includes an adjustment plate 10 and a dial 11 .

[0075] The adjustment plate 10 is rotatably disposed on the measuring plate 7, and one end face of the adjustment plate 10 in the circumferential direction is the standard measuring end face 9. The adjustment plate 10 can be rotated so that the standard measuring end face 9 can constitute one of the fully closed standard measuring end face, the fully open standard measuring end face, and the minimum full-speed standard measuring end face. That is, the position of the adjustment plate 10 can be changed, and the position (angle) of the standard measuring end face 9 can be changed by rotating the adjustment plate 10, so that the standard measuring end face 9 can constitute one of the fully closed standard measuring end face, the fully open standard measuring end face, and the minimum full-speed standard measuring end face, and the fixing screw can be measured.

[0076] The adjusting plate 10 is provided with a pointer 12 that cooperates with the dial 11, and the dial 11 is provided with a full-closed scale line 13, a full-opened scale line 14, and a minimum full-speed scale line 15. When the pointer 12 of the adjusting plate 10 points to the full-closed scale line 13 on the dial 11, the standard measuring end face 9 constitutes the full-closed standard measuring end face. When the pointer 12 of the adjusting plate 10 points to the full-opened scale line 14 on the dial 11, the standard measuring end face 9 constitutes the full-opened standard measuring end face. When the pointer 12 of the adjusting plate 10 points to the minimum full-speed scale line 15 on the dial 11, the standard measuring end face 9 constitutes the minimum full-speed standard measuring end face.

[0077] Therefore, it is not necessary to set a plurality of standard measuring end faces 9, and it is only necessary to adjust the rotation position of the adjusting plate 10 to form the required measuring end face. In addition, a locking nut is provided on the adjusting plate 10, and the locking nut can fix the adjusting plate 10, so that the pointer 12 of the adjusting plate 10 can stably point to one of the fully closed scale line 13, the fully open scale line 14 and the minimum full speed scale line 15.

[0078] like Figure 4 As shown, during the test, the width direction of the measuring plate 7 is consistent with the length direction of the cylinder body 1, the thickness direction of the measuring plate 7 is consistent with the extension direction of the rotation axis of the fixing screw, the pointer 12 of the adjusting plate 10 points to the minimum full-speed scale line 15 on the dial 11, the standard measuring end face 9 constitutes the minimum full-speed standard measuring end face, and at this moment the fixing screw (the side surface in the circumferential direction) is in contact with the standard measuring end face 9, then it is judged that the inlet adjustable guide vane 3 rotates to the minimum full-speed angle

[0079] In some embodiments, the standard measurement end face 9 includes a fully closed standard measurement end face, a fully open standard measurement end face, and a minimum full-speed standard measurement end face. There are multiple measurement plates 7, and / or the measurement portion 8 of each measurement plate 7 has multiple standard measurement end faces 9. Specifically, the measurement portion 8 forms an angle with the measurement plate 7. The standard measurement end face 9 can include a fully closed standard measurement end face, a fully open standard measurement end face, and a minimum full-speed standard measurement end face by increasing at least one of the number of measurement plates 7 and the number of standard measurement end faces 9 of the measurement portion 8.

[0080] like Figures 5 to 7 As shown, in some embodiments, the measurement board 7 includes a full-close measurement board 18 , a full-open measurement board 19 and a minimum full-speed measurement board 20 .

[0081] The standard measuring end face 9 of the fully closed measuring plate 18 is the fully closed standard measuring end face. When the fixing screw fits the standard measuring end face 9 of the fully closed measuring plate 18, it can be determined that the inlet adjustable guide vane 3 rotates to the fully closed angle. Therefore, when it is necessary to measure the inlet adjustable guide vane 3 rotates to the fully closed angle, the fixing screw can be measured using the fully closed measuring plate 18.

[0082] The standard measuring end face 9 of the fully-open measuring plate 19 is the fully-open standard measuring end face. When the fixing screw fits the standard measuring end face 9 of the fully-open measuring plate 19, it can be determined that the inlet adjustable guide vane 3 rotates to the fully-open angle. Therefore, when it is necessary to measure the rotation of the inlet adjustable guide vane 3 to the fully-open angle, the fixing screw can be measured using the fully-open measuring plate 19.

[0083] The standard measurement end face 9 of the minimum full speed measurement plate 20 is the minimum full speed standard measurement end face. When the fixing screw fits the standard measurement end face 9 of the minimum full speed measurement plate 20, it can be determined that the inlet adjustable guide vane 3 rotates to the minimum full speed angle. Therefore, when it is necessary to measure the rotation of the inlet adjustable guide vane 3 to the minimum full speed angle, the fixing screw can be measured using the minimum full speed measurement plate 20.

[0084] In some embodiments, the gas turbine inlet adjustable guide vane angle measuring device includes a fixing seat 16 and a length adjustment device 17 .

[0085] The fixing seat 16 has a positioning end and a connecting end facing away from each other in the length direction of the cylinder body 1. The end face of the positioning end is perpendicular to the length direction of the cylinder body 1, and the end face of the positioning end can be fitted with the positioning surface on the cylinder body 1. The second end of the measuring plate 7 in the width direction (the end facing away from the measuring part 8 in the width direction) is connected to the connecting end of the fixing seat 16 through a length adjusting device 17, and the length adjusting device 17 is used to adjust the distance between the measuring plate 7 and the fixing seat 16 in the length direction of the cylinder body 1.

[0086] Specifically, the positioning surface on the cylinder body 1 is an end surface perpendicular to the length direction of the cylinder body 1. By adjusting the distance between the measuring plate 7 and the fixing seat 16 in the length direction of the cylinder body 1, the end surface of the positioning end of the fixing seat 16 is fitted with the positioning surface on the cylinder body 1, thereby facilitating the positioning of the gas turbine inlet adjustable guide vane angle measuring device to adapt to different gas turbine cylinder body structures.

[0087] For example, the end surface of the flange of the cylinder body 1 adjacent to the rotating ring 2 is the positioning surface on the cylinder body 1. The length adjustment device 17 includes a stud, which is threadedly connected to the connecting end of the measuring plate 7 and the fixing seat 16, and the distance between the measuring plate 7 and the fixing seat 16 in the length direction of the cylinder body 1 can be adjusted by rotating the stud.

[0088] According to the gas turbine inlet adjustable guide vane angle measurement method and the gas turbine inlet adjustable guide vane angle measurement device according to the embodiment of the present invention, the angle of the inlet adjustable guide vane 3 can be directly measured and judged outside the cylinder body 1 without the conditions of entering the internal part of the gas turbine, and the angle opening or angle of the inlet adjustable guide vane 3 such as full opening, full closing and minimum full speed angle can be quickly measured and judged. So as to be used for calibrating the deviation of the mechanical device and the control system;

[0089] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0090] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0091] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0092] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0093] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0094] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for measuring the angle of an adjustable guide vane at the inlet of a gas turbine, wherein the gas turbine comprises a cylinder body and an adjustable guide vane assembly at the inlet, wherein the adjustable guide vane assembly at the inlet comprises a driving part, a rotating ring and a plurality of adjustable guide vanes rotatably arranged on the rotating ring, wherein the rotating ring is arranged on the cylinder body, a rotating shaft of the adjustable guide vane at the inlet is rotatably arranged on the rotating ring, a rocker arm of the driving part is connected to the rotating shaft of the adjustable guide vane at the inlet through a fixing part, and the rocker arm can drive the adjustable guide vane at the inlet to rotate, wherein the method comprises: The method for measuring the angle of the adjustable guide vane at the gas turbine inlet comprises the following steps: S1. Using at least one of the rotating shaft of the inlet adjustable guide vane, the fixing member and the rocker arm as a rotating member; S2. After the inlet adjustable guide vane assembly is debugged, when the inlet adjustable guide vane is rotated to a set angle, the angle corresponding to the rotating member is defined as a standard angle, and the set angle of the inlet adjustable guide vane includes at least one of a fully open angle, a fully closed angle, and a minimum full speed angle; S3. When the inlet adjustable guide vane assembly is overhauled, after a command is issued to control the inlet adjustable guide vane to rotate to a set angle, the measured angle of the rotating part is compared with the standard angle to determine whether the inlet adjustable guide vane has rotated to the set angle.

2. The method for measuring the angle of adjustable guide vanes at the gas turbine inlet according to claim 1, characterized in that: In step S2, after the inlet adjustable guide vane assembly is debugged, When the inlet adjustable guide vane is rotated to a set full-close angle, the angle corresponding to the rotating member is defined as a full-close standard angle; When the inlet adjustable guide vane is rotated to a set full-open angle, the angle corresponding to the rotating member is defined as a full-open standard angle; When the inlet adjustable guide vane is rotated to a set minimum full-speed angle, the angle corresponding to the rotating member is defined as the minimum full-speed standard angle; In step S3, when the inlet adjustable guide vane assembly is overhauled, After issuing a command to control the inlet adjustable guide vane to rotate to a set full-close angle, comparing the measured angle of the rotating member with the full-close standard angle to determine whether the inlet adjustable guide vane has rotated to the set full-close angle; After issuing a command to control the inlet adjustable guide vane to rotate to a set full-open angle, comparing the measured angle of the rotating member with the full-open standard angle to determine whether the inlet adjustable guide vane rotates to the set full-open angle; After a command is issued to control the inlet adjustable guide vanes to rotate to a set minimum full-speed angle, the measured angle of the rotating member is compared with the minimum full-speed standard angle to determine whether the inlet adjustable guide vanes rotate to the set minimum full-speed angle.

3. The method for measuring the angle of adjustable guide vanes at the gas turbine inlet according to claim 1, characterized in that: In step S1, the fixing member is a fixing screw located outside the rotating ring, the fixing screw is connected to the rotating shaft of the inlet adjustable guide vane and can rotate along with the rotating shaft of the inlet adjustable guide vane, and the rotation angle of the rotating member is measured by measuring the rotation position of the fixing screw; In the step S2, after the inlet adjustable guide vane assembly is debugged, when the inlet adjustable guide vane is rotated to a set angle, the angle corresponding to the fixing screw is defined as a standard angle; In step S3, when the inlet adjustable guide vane assembly is overhauled, after a command is issued to control the inlet adjustable guide vane to rotate to a set angle, the inlet adjustable guide vane compares the measured angle of the fixing screw with the standard angle to determine whether the inlet adjustable guide vane has rotated to the set angle.

4. The method for measuring the angle of adjustable guide vanes at the gas turbine inlet according to claim 3, characterized in that: A flange adjacent to the rotating ring is provided at the inlet of the cylinder body, and the surface of the flange facing the rotating ring is used as a positioning surface of the measuring device. The measuring device is fitted with the positioning surface so that the measuring device can measure the rotational position of the fixing screw.

5. A measuring device suitable for the method for measuring the angle of adjustable guide vanes at the gas turbine inlet according to claim 3, characterized in that: include A measuring plate, wherein a measuring portion is provided at a first end in a width direction of the measuring plate, and the measuring portion has a standard measuring end face. During testing, the thickness direction of the measuring plate is consistent with the extension direction of the rotation axis of the fixing screw, and the width direction of the measuring plate is consistent with the length direction of the cylinder body. When the inlet adjustable guide vane after debugging is rotated to a set angle, the fixing screw can fit with the standard measuring end face; Wherein, the standard measurement end face comprises at least one of a fully closed standard measurement end face, a fully open standard measurement end face and a minimum full-speed standard measurement end face; When the inlet adjustable guide vane after debugging is rotated to the fully closed angle, the fixing screw can fit with the fully closed standard measurement end face; When the inlet adjustable guide vane after debugging is rotated to a fully open angle, the fixing screw can fit with the fully open standard measurement end face; When the inlet adjustable guide vane after debugging rotates to the minimum full-speed angle, the fixing screw can fit with the minimum full-speed standard measurement end face.

6. The gas turbine inlet adjustable guide vane angle measuring device according to claim 5, characterized in that: The measuring part includes an adjustment plate, which is rotatably arranged on the measuring plate. One end face of the adjustment plate in the circumferential direction is the standard measuring end face. The adjustment plate can be rotated so that the standard measuring end face can constitute one of the fully closed standard measuring end face, the fully open standard measuring end face and the minimum full-speed standard measuring end face.

7. The gas turbine inlet adjustable guide vane angle measuring device according to claim 6, characterized in that: The measuring part also includes a dial, the adjusting plate is provided with a pointer matched with the dial, and the dial is provided with a full-closed scale line, a full-open scale line and a minimum full-speed scale line; When the pointer of the adjustment plate points to the fully closed scale line on the dial, the standard measurement end face constitutes the fully closed standard measurement end face; When the pointer of the adjustment plate points to the fully-open scale line on the dial, the standard measurement end face constitutes the fully-open standard measurement end face; When the pointer of the adjustment plate points to the minimum full-speed scale line on the dial, the standard measurement end surface constitutes the minimum full-speed standard measurement end surface.

8. The gas turbine inlet adjustable guide vane angle measuring device according to claim 5, characterized in that: The standard measurement end faces include the fully closed standard measurement end face, the fully open standard measurement end face and the minimum full-speed standard measurement end face; There are a plurality of the measurement plates, and / or the measurement portion of each measurement plate has a plurality of the standard measurement end surfaces.

9. The gas turbine inlet adjustable guide vane angle measuring device according to claim 8, characterized in that: The measuring board includes a fully closed measuring board, a fully open measuring board and a minimum full speed measuring board; The standard measurement end face of the fully closed measurement plate is the fully closed standard measurement end face; The standard measurement end face of the fully-open measurement plate is the fully-open standard measurement end face; The standard measurement end face of the minimum full-speed measurement plate is the minimum full-speed standard measurement end face.

10. The gas turbine inlet adjustable guide vane angle measuring device according to any one of claims 6 to 9, characterized in that: The gas turbine inlet adjustable guide vane angle measuring device comprises a fixing seat and a length adjusting device, wherein the fixing seat has a positioning end and a connecting end facing away from each other in the length direction of the cylinder body, the end face of the positioning end is perpendicular to the length direction of the cylinder body, the end face of the positioning end can be fitted with the positioning surface on the cylinder body, the second end of the measuring plate in the width direction is connected to the connecting end of the fixing seat through the length adjusting device, and the length adjusting device is used to adjust the distance between the measuring plate and the fixing seat in the length direction of the cylinder body.

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