Blade measuring device for turbine engineering

Abstract

The utility model belongs to the technical field of turbine engineering measurement, and discloses a blade measuring device for turbine engineering, which comprises a supporting device, an adjusting device and a detecting device. The supporting device comprises a supporting frame and a measuring table. The adjusting device comprises a linear guide rail arranged beside the measuring table, a linear motor is installed on the linear guide rail, a moving frame is arranged on the linear motor, an adjusting guide rail is arranged on the top of the moving frame, an adjusting lead screw is arranged on the adjusting guide rail, and an adjusting motor is installed at one end of the adjusting guide rail and is in transmission connection with the adjusting lead screw. And an adjusting block is arranged on the adjusting screw rod. The detection device comprises a lifting mechanism and a measuring mechanism, the lifting mechanism is connected with the adjusting block, the measuring mechanism comprises two measuring rods with an adjustable horizontal distance, and measuring heads are arranged at the bottoms of the two measuring rods. The measuring device is flexible to adjust, does not need to manually adjust the blade, and is high in measuring accuracy and measuring efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of turbine engineering measurement, in particular to a blade measuring device for turbine engineering. Background Art

[0002] The Marine Engineering major cultivates students with knowledge of mechanical principles and marine systems, and its research directions are modern marine management engineering, marine automation and intelligence, marine simulation technology, ship safety and pollution control, marine fault diagnosis and prediction technology, mechatronics, and power machinery aerodynamics. Among them, the turbine blades are key parts of the turbine. The surface quality and manufacturing accuracy of the blades will directly affect the mechanical properties, power generation efficiency, operation stability and service life of the entire turbine unit. When inspecting the blades, the staff needs to use a special measuring device to measure the blade root arc.

[0003] In the related art, the Chinese patent with the authorization announcement number CN213748366U discloses a blade measuring device for turbine engineering, including a base plate, the upper surface of which is provided with a material holding mechanism, the material holding mechanism including a support plate, a rubber ball, a groove, a cross tube, a collar, a compression spring, an inclined rod, a square rod, a square ring and a roller, and the support plate is located on the upper surface of the base plate. The blade measuring device for turbine engineering, through the cooperation between the base plate and the material holding mechanism, after placing the blade root to be measured on the upper surface of the support plate, the operator can apply force to the support plate to make the roller roll, and the position of the blade root to be measured can be fine-tuned more conveniently. After the adjustment is completed, the blade root to be measured above is pressed downward and clamped, and then the positioning and measurement of the blade root are completed.

[0004] When using the measuring device in the related art, although the staff does not need to lift and move the root of the blade as a whole for adjustment, it is still necessary to apply force for manual adjustment. It is difficult to ensure that the measured part of the root of the blade is accurately moved to the measuring position of the measuring device, resulting in the need for repeated fine-tuning and low measurement efficiency. Utility Model Content

[0005] The utility model aims to provide a blade measuring device for turbine engineering to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A blade measuring device for turbine engineering includes a supporting device, an adjusting device and a detecting device.

[0008] The supporting device comprises a supporting frame and a measuring platform arranged on the supporting frame;

[0009] The adjusting device comprises a linear guide rail arranged beside the measuring platform, a linear motor is installed on the linear guide rail, a moving frame is arranged on the linear motor, an adjusting guide rail is arranged on the top of the moving frame, the adjusting guide rail is parallel to the top surface of the measuring platform and perpendicular to the linear guide rail, an adjusting screw rod is arranged on the adjusting guide rail along the length direction, an adjusting motor is installed on one end of the adjusting guide rail and is in transmission connection with the adjusting screw rod, and an adjusting block is arranged on the adjusting screw rod;

[0010] The detection device includes a lifting mechanism and a measuring mechanism. The lifting mechanism is connected to the adjustment block and is used to drive the measuring mechanism to lift and lower. The measuring mechanism includes two measuring rods arranged in parallel and at intervals on the lifting mechanism. The spacing between the two measuring rods is adjustable and a measuring head is provided at the bottom.

[0011] Optionally, the lifting mechanism includes a fixed frame, an electric push rod, a clamping rail and a clamping motor, the fixed frame is connected to the adjusting block, the electric push rod is arranged in the middle of the fixed frame and is perpendicular to the top surface of the measuring platform, the clamping rail is arranged at the bottom of the electric push rod and is parallel to the adjusting screw rod, the clamping rail is provided with positive and negative threaded screw rods along the length direction, a clamping motor is provided at one end of the clamping rail and is transmission-connected to the positive and negative threaded screw rods, two sliding blocks are symmetrically installed on both sides of the positive and negative threaded screw rods, and the tops of the two measuring rods are respectively connected to the two sliding blocks.

[0012] Optionally, a rotating motor is arranged inside the sliding block, and an output shaft of the rotating motor is perpendicular to the top surface of the measuring platform and is drivingly connected to the measuring rod.

[0013] Optionally, a limit rod is provided on the top of the clamping guide rail, and the limit rod is parallel to the electric push rod and is slidably disposed on the fixing frame.

[0014] Optionally, a mounting groove is provided on the top surface of the measuring platform.

[0015] Optionally, a plurality of limiting protrusions are provided on the side wall of the installation groove, and the plurality of limiting protrusions are arranged in parallel and at intervals.

[0016] Optionally, the limiting protrusion is a rubber structural member and is detachably connected to the side wall of the mounting groove.

[0017] Optionally, a guide rod is provided on the adjustment guide rail, and the guide rod is arranged beside the adjustment screw rod and penetrates the adjustment block.

[0018] Optionally, the movable frame is detachably connected to the adjusting guide rail.

[0019] Optionally, the linear guide rail, the linear motor and the moving frame arranged on the linear guide rail are provided in two groups and are symmetrically arranged on both sides of the measuring table, and the two ends of the adjustment guide rail are respectively connected to the two moving frames.

[0020] Compared with the prior art, the beneficial effects of the embodiments of the present invention include at least:

[0021] The turbine engineering blade measuring device provided by the embodiment of the utility model is adopted. When measuring, the support frame is used as a support structure for padding support, and the measuring platform uses its top surface as the mounting surface to carry the turbine engineering blade. After the blade to be measured is installed in place, it is remotely controlled by a host computer and other control equipment. The detection device connected to the adjustment block is driven by the electric control structure of the adjustment device to perform a horizontal biaxial movement relative to the turbine engineering blade installed above. Finally, under the drive of the lifting mechanism, the measuring rod moved above the blade to be measured is lowered to the measurement position. After that, the distance between the two measuring rods is adjusted so that the measuring heads on the two measuring rods contact the blade to be measured, thereby measuring the blade root arc data. The overall three-axis moving structure under electric control is realized, so that the measuring rod and the corresponding measuring head can be stably moved to any position to be detected of the blade to be measured. The adjustment is flexible and there is no need for manual adjustment of the blade. The measurement accuracy and efficiency are high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a blade measuring device for turbine engineering provided by an embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of a supporting device provided in an embodiment of the utility model;

[0024] Figure 3 It is a structural schematic diagram of another supporting device provided by an embodiment of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the regulating device provided by an embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of the structure of the detection device provided by the embodiment of the utility model under a working condition;

[0027] Figure 6 It is a schematic diagram of the structure of the detection device provided by an embodiment of the utility model under another working condition.

[0028] In the accompanying drawings: 1. supporting device; 101. supporting frame; 102. measuring table; 103. mounting groove; 104. limiting protrusion; 2. adjusting device; 201. linear guide rail; 202. linear motor; 203. moving frame; 204. adjusting guide rail; 205. adjusting screw rod; 206. adjusting motor; 207. adjusting block; 208. guide rod; 3. detecting device; 31. lifting mechanism; 32. measuring mechanism; 33. rotating motor; 301. fixing frame; 302. electric push rod; 303. limiting rod; 304. clamping guide rail; 305. positive and negative thread screw rod; 306. clamping motor; 307. slider; 308. measuring rod; 309. measuring head. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the related art, the Chinese patent with the authorization announcement number CN213748366U discloses a blade measuring device for turbine engineering, including a base plate, the upper surface of which is provided with a material holding mechanism, the material holding mechanism including a support plate, a rubber ball, a groove, a cross tube, a collar, a compression spring, an inclined rod, a square rod, a square ring and a roller, and the support plate is located on the upper surface of the base plate. The blade measuring device for turbine engineering, through the cooperation between the base plate and the material holding mechanism, after placing the blade root to be measured on the upper surface of the support plate, the operator can apply force to the support plate to make the roller roll, and the position of the blade root to be measured can be fine-tuned more conveniently. After the adjustment is completed, the blade root to be measured above is pressed downward and clamped, and then the positioning and measurement of the blade root are completed.

[0031] When using the measuring device in the related art, although the staff does not need to lift and move the root of the blade as a whole for adjustment, it is still necessary to apply force for manual adjustment. It is difficult to ensure that the measured part of the root of the blade is accurately moved to the measuring position of the measuring device, resulting in the need for repeated fine-tuning and low measurement efficiency.

[0032] Figure 1 It is a structural schematic diagram of a blade measuring device for turbine engineering provided by an embodiment of the utility model; Figure 2 It is a structural schematic diagram of a supporting device provided in an embodiment of the utility model; Figure 3 It is a structural schematic diagram of another supporting device provided by an embodiment of the utility model; Figure 4 It is a structural schematic diagram of the regulating device provided by an embodiment of the utility model; Figure 5 It is a schematic diagram of the structure of the detection device provided by the embodiment of the utility model under a working condition; Figure 6 Schematic diagram of the structure of the detection device provided by the embodiment of the utility model under another working condition. Figures 1 to 6 The embodiment of the utility model provides a blade measuring device for turbine engineering, including a supporting device 1, an adjusting device 2 and a detecting device 3.

[0033] The support device 1 includes a support frame 101 and a measuring platform 102 arranged on the support frame 101. The support frame 101 is used as a support structure for elevation support, and the measuring platform 102 uses its top surface as a mounting surface to carry turbine engineering blades.

[0034] The adjusting device 2 includes a linear guide rail 201 arranged beside the measuring platform 102, a linear motor 202 is installed on the linear guide rail 201, a moving frame 203 is arranged on the linear motor 202, and the moving frame 203 can move along the extension direction of the linear guide rail 201 under the drive of the linear motor 202. An adjusting guide rail 204 is arranged on the top of the moving frame 203, the adjusting guide rail 204 is parallel to the top surface of the measuring platform 102 and perpendicular to the linear guide rail 201, an adjusting screw rod 205 is arranged on the adjusting guide rail 204 along the length direction, an adjusting motor 206 is installed on one end of the adjusting guide rail 204 and is in transmission connection with the adjusting screw rod 205, and an adjusting block 207 is arranged on the adjusting screw rod 205. The adjusting screw 205 rotates under the drive of the adjusting motor 206 , and the adjusting screw 205 and the adjusting block 207 which is penetrated thereon and slidably mounted on the adjusting guide rail 204 form a screw motion pair, thereby driving the adjusting block 207 to move along the extension direction of the adjusting guide rail 204 .

[0035] The detection device 3 includes a lifting mechanism 31 and a measuring mechanism 32. The lifting mechanism 31 is connected to the adjustment block 207 and is used to drive the measuring mechanism 32 to lift. The measuring mechanism 32 includes two measuring rods 308 arranged in parallel and spaced apart on the lifting mechanism 31. The spacing between the two measuring rods 308 is adjustable and a measuring head 309 is provided at the bottom. The detection device 3 is connected to the adjustment block 207, and can perform horizontal biaxial movement relative to the turbine engineering blades supported and installed above the measuring platform 102 under the drive of the adjustment device 2. Further, under the drive of the lifting mechanism 31, the measuring rod 308 moved above the blade to be measured is lowered to the measuring position, and then the spacing between the two measuring rods 308 is adjusted so that the measuring heads 309 on the two measuring rods 308 are in contact with the blade to be measured, thereby measuring the blade root arc data of the blade.

[0036] The turbine blade measuring device provided by the embodiment of the utility model is used. When measuring, the support frame 101 is used as a support structure for padding support, and the measuring platform 102 uses its top surface as the mounting surface to carry the turbine blade. After the blade to be measured is installed in place, it is remotely controlled by a host computer and other control equipment. The detection device 3 connected to the adjustment block 207 is driven by the electric control structure of the adjustment device 2 to perform a horizontal biaxial movement relative to the turbine blade to be installed above. Finally, under the drive of the lifting mechanism 31, the measuring rod 308 moved above the blade to be measured is lowered to the measuring position. After that, the distance between the two measuring rods 308 is adjusted so that the measuring heads 309 on the two measuring rods 308 contact the blade to be measured, thereby measuring the blade root arc data. The overall three-axis moving structure under electric control is realized, so that the measuring rod 308 and the corresponding measuring head 309 can be stably moved to any position to be detected of the blade to be measured, the adjustment is flexible and there is no need to manually adjust the blade, and the measurement accuracy and efficiency are high.

[0037] Optionally, the lifting mechanism 31 includes a fixed frame 301, an electric push rod 302, a clamping rail 304 and a clamping motor 306, the fixed frame 301 is connected to the adjustment block 207, the electric push rod 302 is arranged in the middle of the fixed frame 301 and is perpendicular to the top surface of the measuring table 102, the clamping rail 304 is arranged at the bottom of the electric push rod 302 and is parallel to the adjusting screw rod 205, a positive and negative threaded screw rod 305 is arranged on the clamping rail 304 along the length direction, a clamping motor 306 is arranged at one end of the clamping rail 304 and is transmission-connected to the positive and negative threaded screw rod 305, two sliders 307 are symmetrically installed on both sides of the positive and negative threaded screw rod 305, and the tops of the two measuring rods 308 are respectively connected to the two sliders 307. Exemplarily, in the embodiment of the utility model, the electric push rod 302 drives the clamping rail 304 to lift and lower, thereby driving the two measuring rods 308 to lift and lower synchronously. Driven by the clamping motor 306, the forward and reverse threaded screw 305 rotates. Since the threads on both sides of the forward and reverse threaded screw 305 are arranged in opposite directions, the two sliders 307 slidingly arranged on the clamping guide rail 304 will simultaneously move in opposite directions according to the rotation direction of the forward and reverse threaded screw 305, thereby driving the two measuring rods 308 to approach or separate from each other, thereby realizing synchronous spacing adjustment.

[0038] Optionally, a rotary motor 33 is disposed inside the slider 307, and the output shaft of the rotary motor is perpendicular to the top surface of the measuring platform 102 and is in transmission connection with the measuring rod 308. Figure 5 and Figure 6In the embodiment of the utility model, since the arc rotation directions and angles of blades of different specifications and sizes and different test positions are synchronized, by arranging a rotating motor 33 under the slider 307, the two measuring rods 308 can be driven to rotate according to different measuring positions, thereby adjusting the horizontal direction of the measuring head 309 at the bottom, ensuring that the measuring head 309 can stably contact the blade to be measured to avoid interference, thereby further improving the adaptability and measurement efficiency of the blade measuring device for turbine engineering.

[0039] Optionally, a limit rod 303 is provided at the top of the clamping guide rail 304, and the limit rod 303 is parallel to the electric push rod 302 and slidably penetrates the fixing frame 301. For example, in the embodiment of the utility model, by providing the limit rod 303, the lifting path of the electric push rod 302 can be limited and guided during the lifting of the clamping guide rail 304 driven by the electric push rod 302, so as to avoid shaking or deviation, and further improve the measurement accuracy.

[0040] Optionally, a guide rod 208 is provided on the adjustment rail 204, and the guide rod 208 is provided beside the adjustment screw 205 and penetrates the adjustment block 207. For example, in the embodiment of the utility model, by providing two guide rods 208 on both sides of the adjustment screw 205, when the adjustment block 207 moves along the extension direction of the adjustment screw 205, its moving path can be limited and guided to avoid shaking or deviation, thereby further improving the measurement accuracy.

[0041] Optionally, a mounting groove 103 is provided on the top surface of the measuring platform 102. Exemplarily, in an embodiment of the utility model, by providing a recessed mounting groove 103 on the top of the measuring platform 102, the side wall of the mounting groove 103 can be used to perform preliminary positioning of the outer contour of the blade to be measured, thereby avoiding shaking during measurement. Furthermore, a plurality of limiting protrusions 104 are provided on the side wall of the mounting groove 103, and the plurality of limiting protrusions 104 are arranged in parallel and spaced apart. Each limiting protrusion 104 is an elastic rubber structural member, which can be adaptively engaged with blades at different angles to further improve positioning stability, and at the same time, utilize its elasticity and the characteristics of the arc structure at the end to increase the contact area, while avoiding scratches and damage to the blades, further improving the practicality of the blade measuring device for turbine engineering.

[0042] Optionally, the limiting protrusion 104 is a rubber structural member and is detachably connected to the side wall of the mounting groove 103. The movable frame 203 is detachably connected to the adjustment rail 204. Exemplarily, in the embodiment of the utility model, the above-mentioned components are connected by assembly and fixed by bolts, which is convenient for separate manufacturing, and disassembly maintenance and storage when not in use.

[0043] Optionally, two groups of linear guide rails 201, linear motors 202 and mobile racks 203 disposed on the linear guide rails 201 are provided and symmetrically arranged on both sides of the measuring platform 102, and both ends of the adjustment rail 204 are respectively connected to the two mobile racks 203. By way of example, in the embodiment of the utility model, by providing two groups of linear guide rails 201, linear motors 202 and mobile racks 203 disposed on the linear guide rails 201, corresponding driving support structures are provided at both ends of the adjustment rail 204 to ensure its horizontal movement, and the stability of the upper detection device 3 during biaxial movement, to avoid shaking, and further improve the detection accuracy.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blade measuring device for turbine engineering, It is characterized in that include: A supporting device (1), an adjusting device (2) and a detecting device (3), The support device (1) comprises a support frame (101) and a measuring platform (102) arranged on the support frame (101); The adjusting device (2) comprises a linear guide rail (201) arranged beside the measuring platform (102), a linear motor (202) being installed on the linear guide rail (201), a moving frame (203) being installed on the linear motor (202), an adjusting guide rail (204) being installed on the top of the moving frame (203), the adjusting guide rail (204) being parallel to the top surface of the measuring platform (102) and perpendicular to the linear guide rail (201), an adjusting screw rod (205) being installed on the adjusting guide rail (204) along the length direction, an adjusting motor (206) being installed on one end of the adjusting guide rail (204) and being transmission-connected to the adjusting screw rod (205), and an adjusting block (207) being installed on the adjusting screw rod (205); The detection device (3) comprises a lifting mechanism (31) and a measuring mechanism (32); the lifting mechanism (31) is connected to the adjustment block (207) and is used to drive the measuring mechanism (32) to lift and lower; the measuring mechanism (32) comprises two measuring rods (308) arranged in parallel and spaced apart on the lifting mechanism (31); the spacing between the two measuring rods (308) is adjustable and a measuring head (309) is provided at the bottom.

2. The blade measuring device for turbine engineering according to claim 1, It is characterized in that The lifting mechanism (31) comprises a fixed frame (301), an electric push rod (302), a clamping rail (304) and a clamping motor (306); the fixed frame (301) is connected to the adjusting block (207); the electric push rod (302) is arranged in the middle of the fixed frame (301) and is perpendicular to the top surface of the measuring platform (102); the clamping rail (304) is arranged at the bottom of the electric push rod (302) and is parallel to the adjusting screw rod (205); a positive and negative threaded screw rod (305) is arranged on the clamping rail (304) along the length direction; a clamping motor (306) is arranged at one end of the clamping rail (304) and is transmission-connected to the positive and negative threaded screw rod (305); two sliders (307) are symmetrically installed on both sides of the positive and negative threaded screw rod (305); the tops of the two measuring rods (308) are respectively connected to the two sliders (307).

3. The blade measuring device for turbine engineering according to claim 2, It is characterized in that A rotating motor (33) is arranged inside the sliding block (307), and an output shaft of the rotating motor is perpendicular to the top surface of the measuring platform (102) and is drivingly connected to the measuring rod (308).

4. The blade measuring device for marine engineering according to claim 2, It is characterized in that A limiting rod (303) is arranged on the top of the clamping guide rail (304), and the limiting rod (303) is parallel to the electric push rod (302) and is slidably disposed on the fixing frame (301).

5. The blade measuring device for turbine engineering according to any one of claims 1 to 4, It is characterized in that A mounting groove (103) is provided on the top surface of the measuring platform (102).

6. The blade measuring device for turbine engineering according to claim 5, It is characterized in that A plurality of limiting protrusions (104) are provided on the side wall of the installation groove (103), and the plurality of limiting protrusions (104) are arranged in parallel and at intervals.

7. The blade measuring device for turbine engineering according to claim 6, It is characterized in that The limiting protrusion (104) is a rubber structural component and is detachably connected to the side wall of the installation groove (103).

8. The blade measuring device for turbine engineering according to any one of claims 1 to 4, It is characterized in that A guide rod (208) is provided on the adjustment guide rail (204), and the guide rod (208) is arranged beside the adjustment screw rod (205) and penetrates the adjustment block (207).

9. The blade measuring device for turbine engineering according to any one of claims 1 to 4, It is characterized in that The movable frame (203) is detachably connected to the adjustment guide rail (204).

10. The blade measuring device for turbine engineering according to any one of claims 1 to 4, It is characterized in that The linear guide rail (201), the linear motor (202) and the moving frame (203) arranged on the linear guide rail (201) are provided in two groups and are symmetrically arranged on both sides of the measuring platform (102), and the two ends of the adjustment guide rail (204) are respectively connected to the two moving frames (203).

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