Steam turbine moving blade root arc measuring device

Abstract

The utility model discloses a steam turbine moving blade root arc measuring device which comprises a bottom plate, an operation table and a fixing table, the surface of the bottom of the operation table is fixedly connected with the side of the upper surface of the bottom plate, the upper side surface of a connecting disc is fixedly connected with a rotating disc, and the upper surface of the rotating disc is provided with a clamping groove. The surface of one side of the fixing plate is fixedly connected with an installation plate, the surface of the upper side of the installation plate is fixedly provided with a second hydraulic cylinder, the surface of the lower side of the hanging plate is fixedly connected with a sliding rail, the surface of the lower side of the sliding rail is slidably connected with an electric sliding block, and the end, away from the operation table, of the data line is fixedly connected with a measuring head. According to the turbine moving blade root arc measuring device, the problem that an existing device is not high enough in measuring efficiency is solved, the measuring efficiency is improved, time is saved, the delivery speed of samples is met, meanwhile, the samples can be automatically classified, the workload of workers is reduced, and the measuring efficiency of the device can also be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbines, in particular to a measuring device for the arc of the root of a moving blade of a steam turbine. Background Technique

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle to become an accelerated air flow and then jets onto the blades, causing the rotor equipped with the blade row to rotate and do external work at the same time. A steam turbine is the main equipment of a modern thermal power plant and is also used in the metallurgical industry, chemical industry, and ship power plants. The blade is a key part of the steam turbine and is also one of the most delicate and important parts. It is under the combined action of high temperature, high pressure, huge centrifugal force, steam force, steam excitation force, corrosion, vibration, and water droplet erosion in the wet steam area under extremely harsh conditions. Its aerodynamic performance, processing geometry, surface roughness, installation clearance, operating conditions, fouling, and other factors all affect the efficiency and output of the steam turbine; its structural design, vibration intensity, and operating mode have a decisive impact on the safety and reliability of the unit.

[0003] Currently, the existing measuring devices for the arc of the root of a moving blade of a steam turbine all measure one by one through a probe. Such a measuring device has low measuring efficiency and will waste a lot of time. Such a measuring speed cannot meet the demand for moving blades of steam turbines in the existing market.

[0004] Therefore, the technical personnel in this field have provided a measuring device for the arc of the root of a moving blade of a steam turbine to solve the problems raised in the above background technique. Content of the Utility Model

[0005] The purpose of the utility model is to provide a measuring device for the arc of the root of a moving blade of a steam turbine to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] Steam turbine moving blade root arc measuring device, including a bottom plate, an operating table and a fixing table. The surface of the bottom of the operating table is fixedly connected to the side of the upper surface of the bottom plate. The surface of the bottom of the fixing table is fixedly connected to the middle of the upper side surface of the bottom plate. The upper side surface of the fixing table is rotatably connected to a support column. The surface of the upper end of the support column is fixedly connected to a connecting disc. The upper side surface of the connecting disc is fixedly connected to a turntable. A card slot is provided on the upper surface of the turntable. A spring is fixedly connected to the surface of one side inside the card slot. One end of the spring away from the card slot is fixedly connected to a first clamping plate. A first hydraulic cylinder is fixedly connected to the upper surface of the turntable. The first hydraulic cylinder is provided with a first push shaft. One end of the first push shaft is fixedly connected to a second clamping plate. The front side of the upper surface of the bottom plate is fixedly connected to a first support leg. A first conveyor belt is arranged at the upper end of the first support leg. The left side of the upper surface of the bottom plate is fixedly connected to a second support leg. A second conveyor belt is arranged at the upper end of the second support leg. The side surfaces of the first support leg and the second support leg are fixedly connected to a fixing plate. A mounting plate is fixedly connected to the surface of one side of the fixing plate. A second hydraulic cylinder is fixedly installed on the upper side surface of the mounting plate. The second hydraulic cylinder is provided with a second push shaft. The upper end of the second push shaft is fixedly connected to a hanging plate. A slide rail is fixedly connected to the lower side surface of the hanging plate. An electric slider is slidably connected to the lower side surface of the slide rail. A pushing block is fixedly connected to the lower side surface of the electric slider. One side of the operating table is communicated with a data line. One end of the data line away from the operating table is fixedly connected to a measuring head. A handle is fixedly connected to the surface of the measuring head. A measuring probe is fixedly connected to the front end of the measuring head.

[0008] As a further scheme of the present utility model: a toothed groove is provided on the surface of the support column. An installation table is fixedly connected to the upper side surface of the bottom plate. A motor is fixedly installed on the upper side surface of the installation table.

[0009] As a further scheme of the present utility model: the motor is provided with an output shaft. One end of the output shaft is fixedly connected to a gear.

[0010] As a further scheme of the present utility model: a display screen and adjustment buttons are respectively arranged in the front and rear of the upper surface of the operating table.

[0011] As a further scheme of the present utility model: the number of both the card slot and the first hydraulic cylinder is set to four, and they are evenly distributed in a circumferential array on the upper side surface of the turntable.

[0012] As a further scheme of the present utility model: gaskets are fixedly connected to the inner surfaces of both the first clamping plate and the second clamping plate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. In the present utility model, through the provided turntable, four card slots are provided on the upper surface of the turntable. The staff needs to place the moving blade to be measured inside the card slots on the right side of the device. After the placement is completed, the first hydraulic cylinder provided beside the card slot where the blade is located will drive the first push shaft to move. The movement of the first push shaft will drive the second clamping plate to move, so that the first clamping plate and the second clamping plate can clamp the sample. The spring provided beside the first clamping plate enables the device to be applicable to samples of more sizes. Gaskets are fixedly connected to the inner surfaces of the first clamping plate and the second clamping plate, and the material of the gaskets is rubber, which can prevent the sample from being worn. After the clamping is completed, the staff needs to start the motor, and the motor will drive the output shaft to rotate. The rotation of the output shaft will drive the gear to rotate. The rotation of the gear will drive the support column to rotate through the tooth grooves. The rotation of the support column will drive the connecting disc at the upper end to rotate. The rotation of the connecting disc will drive the turntable to rotate. In this way, the card slot with the sample placed will rotate to the front side of the device, and there will be no sample in the card slot on the right side. The staff can continue to place samples. At this time, the staff in the front needs to hold the handle and measure the sample through the measuring probe provided in front of the measuring head. Such a detection process is in a pipeline form, solving the problem of low measurement efficiency of the existing device, improving the measurement efficiency, saving time, and meeting the production speed of the samples.

[0015] 2. In the present utility model, through the provided conveyor belt, after the measurement is completed, the turntable rotates again. When the measurement result is qualified and the sample rotates to beside the first conveyor belt, the second hydraulic cylinder provided beside the first conveyor belt will drive the second push shaft to move, so that the pushing block can be moved to the rear of the sample. Then the electric slider moves through the slide rail, and the pushing block can push the sample onto the surface of the first conveyor belt. When the measurement result is unqualified, the device beside the first conveyor belt does not work. When the sample moves to the rear side of the device, the assembly provided beside the second conveyor belt will push the sample onto the surface of the second conveyor belt, which can classify the samples, reducing the workload of the staff and also improving the measurement efficiency of the device. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the bottom side of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the card slot of the present utility model;

[0019] Figure 4 is a schematic structural diagram of the slide rail of the present utility model.

[0020] In the figure: 1, bottom plate; 2, operating table; 201, display screen; 202, adjustment button; 3, fixed table; 4, support column; 41, tooth groove; 5, connecting disc; 6, turntable; 61, card slot; 7, spring; 8, first clamping plate; 9, first hydraulic cylinder; 91, first push shaft; 10, second clamping plate; 11, first support leg; 111, first conveyor belt; 12, second support leg; 121, second conveyor belt; 13, fixing plate; 14, mounting plate; 15, second hydraulic cylinder; 151, second push shaft; 16, hanging plate; 17, slide rail; 18, electric slider; 19, push block; 20, mounting table; 21, motor; 211, output shaft; 212, gear; 22, data cable; 23, measuring head; 231, handle; 232, measuring probe; 24, gasket. Detailed implementation manner

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 to 4, in the embodiment of the present utility model, a measuring device for the arc of the root of a steam turbine moving blade includes a bottom plate 1, an operating table 2 and a fixing table 3. The surface of the bottom of the operating table 2 is fixedly connected to the side of the upper surface of the bottom plate 1, and the surface of the bottom of the fixing table 3 is fixedly connected to the middle of the upper side surface of the bottom plate 1. A support column 4 is rotatably connected to the upper side surface of the fixing table 3. A connecting disc 5 is fixedly connected to the surface of the upper end of the support column 4. A turntable 6 is fixedly connected to the upper side surface of the connecting disc 5. A card slot 61 is provided on the upper surface of the turntable 6. A spring 7 is fixedly connected to the surface of one side inside the card slot 61. One end of the spring 7 far from the card slot 61 is fixedly connected to a first clamping plate 8. A first hydraulic cylinder 9 is fixedly connected to the upper surface of the turntable 6. The first hydraulic cylinder 9 is provided with a first push shaft 91. One end of the first push shaft 91 is fixedly connected to a second clamping plate 10. A first support leg 11 is fixedly connected to the front side of the upper surface of the bottom plate 1. A first conveyor belt 111 is provided at the upper end of the first support leg 11. A second support leg 12 is fixedly connected to the left side of the upper surface of the bottom plate 1. A second conveyor belt 121 is provided at the upper end of the second support leg 12. A fixing plate 13 is fixedly connected to the side surfaces of the first support leg 11 and the second support leg 12. A mounting plate 14 is fixedly connected to the surface of one side of the fixing plate 13. A second hydraulic cylinder 15 is fixedly installed on the upper side surface of the mounting plate 14. The second hydraulic cylinder 15 is provided with a second push shaft 151. The upper end of the second push shaft 151 is fixedly connected to a hanging plate 16. A slide rail 17 is fixedly connected to the lower side surface of the hanging plate 16. An electric slider 18 is slidably connected to the lower side surface of the slide rail 17. A pushing block 19 is fixedly connected to the lower side surface of the electric slider 18. One side of the operating table 2 is communicated with a data line 22. One end of the data line 22 far from the operating table 2 is fixedly connected to a measuring head 23. A handle 231 is fixedly connected to the surface of the measuring head 23. A measuring probe 232 is fixedly connected to the front end of the measuring head 23.

[0023] Among them, a tooth groove 41 is provided on the surface of the support column 4. A mounting table 20 is fixedly connected to the upper side surface of the bottom plate 1. A motor 21 is fixedly installed on the upper side surface of the mounting table 20. The motor 21 is provided with an output shaft 211. One end of the output shaft 211 is fixedly connected to a gear 212. A display screen 201 and adjustment buttons 202 are respectively provided in front of and behind the upper surface of the operating table 2. The number of the card slots 61 and the first hydraulic cylinders 9 are both set to four, and are evenly distributed in a circumferential array on the upper side surface of the turntable 6. Gaskets 24 are fixedly connected to the inner surfaces of the first clamping plate 8 and the second clamping plate 10.

[0024] The working principle of the present utility model is as follows: There are four card slots 61 provided on the upper surface of the turntable 6. The staff needs to place the moving blade to be measured on the right side of the device inside the card slot 61. After the placement is completed, the first hydraulic cylinder 9 provided beside the card slot 61 where the sample is located will drive the first push shaft 91 to move. The movement of the first push shaft 91 will drive the second clamping plate 10 to move, so that the first clamping plate 8 and the second clamping plate 10 can clamp the sample. Among them, the spring 7 provided beside the first clamping plate 8 can make the device applicable to samples of more sizes. The inner surfaces of the first clamping plate 8 and the second clamping plate 10 are fixedly connected with gaskets 24. The material of the gaskets 24 is rubber, which can prevent the sample from being worn. After the clamping is completed, the staff needs to start the motor 21. The motor 21 will drive the output shaft 211 to rotate. The rotation of the output shaft 211 will drive the gear 212 to rotate. The rotation of the gear 212 will drive the support column 4 to rotate through the tooth groove 41. The rotation of the support column 4 will drive the connecting disc 5 at the upper end to rotate. The rotation of the connecting disc 5 will drive the turntable 6 to rotate. In this way, the card slot 61 with the sample placed will rotate to the front side of the device, and there will be no sample in the card slot 61 on the right side. The staff continues to place the sample. At this time, the staff on the front side needs to hold the handle 231 and measure the sample through the measuring probe 232 provided in front of the measuring head 23. And the measurement result will be transmitted to the operation table 2 through the data line 22. After the measurement is completed, the turntable 6 rotates again. When the measurement result is qualified and the sample rotates to beside the first conveyor belt 111, the second hydraulic cylinder 15 provided beside the first conveyor belt 111 will drive the second push shaft 151 to move, so that the pushing block 19 can be moved to the rear of the sample. Then the electric slider 18 moves through the slide rail 17, so that the pushing block 19 can push the sample onto the surface of the first conveyor belt 111. When the measurement result is unqualified, the device 1 beside the first conveyor belt 111 does not work. When the sample moves to the rear side of the device, the assembly provided beside the second conveyor belt 121 will push the sample onto the surface of the second conveyor belt, so that the samples can be classified.

[0025] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A device for measuring the circular arc of a blade root of a steam turbine rotor blade, comprising a base plate (1), an operating table (2) and a fixing table (3), wherein the surface of the bottom of the operating table (2) is fixedly connected to the side of the upper surface of the base plate (1), and the surface of the bottom of the fixing table (3) is fixedly connected to the middle of the upper surface of the base plate (1), characterized in that: The upper surface of the fixed platform (3) is rotatably connected to a support column (4), the upper surface of the support column (4) is fixedly connected to a connecting disc (5), the upper surface of the connecting disc (5) is fixedly connected to a rotating disk (6), a slot (61) is provided on the upper surface of the rotating disk (6), a spring (7) is fixedly connected to the surface of one side inside the slot (61), the end of the spring (7) away from the slot (61) is fixedly connected to a first clamping plate (8), and the upper surface of the rotating disk (6) is fixedly connected to a A first hydraulic cylinder (9), wherein the first hydraulic cylinder (9) is provided with a first driving shaft (91), one end of the first driving shaft (91) is fixedly connected to a second clamping plate (10), a first supporting leg (11) is fixedly connected to the front side of the upper surface of the base plate (1), a first conveyor belt (111) is provided at the upper end of the first supporting leg (11), a second supporting leg (12) is fixedly connected to the left side of the upper surface of the base plate (1), a second conveyor belt (111) is provided at the upper end of the second supporting leg (12), 21), the side surfaces of the first supporting leg (11) and the second supporting leg (12) are fixedly connected to a fixing plate (13), the surface of one side of the fixing plate (13) is fixedly connected to a mounting plate (14), the upper surface of the mounting plate (14) is fixedly mounted with a second hydraulic cylinder (15), the second hydraulic cylinder (15) is provided with a second driving shaft (151), the upper end of the second driving shaft (151) is fixedly connected to a hanging plate (16), the lower surface of the hanging plate (16) is fixedly connected to A slide rail (17), the lower surface of the slide rail (17) is slidably connected to an electric slider (18), the lower surface of the electric slider (18) is fixedly connected to a push block (19), one side of the operating table (2) is connected to a data line (22), one end of the data line (22) away from the operating table (2) is fixedly connected to a measuring head (23), the surface of the measuring head (23) is fixedly connected to a handle (231), and the front end of the measuring head (23) is fixedly connected to a measuring probe (232).

2. The device for measuring the arc of a blade root of a steam turbine rotor blade according to claim 1, characterized in that: The surface of the support column (4) is provided with tooth grooves (41), the upper surface of the base plate (1) is fixedly connected to a mounting platform (20), and the upper surface of the mounting platform (20) is fixedly mounted with a motor (21).

3. The device for measuring the arc of the blade root of a steam turbine rotor blade according to claim 2, characterized in that: The motor (21) is provided with an output shaft (211), and one end of the output shaft (211) is fixedly connected to a gear (212).

4. The device for measuring the arc of the blade root of a steam turbine rotor blade according to claim 1, characterized in that: A display screen (201) and adjustment buttons (202) are respectively arranged at the front and rear of the upper surface of the operating table (2).

5. The device for measuring the arc of a blade root of a steam turbine rotor blade according to claim 1, characterized in that: The number of the clamping slots (61) and the first hydraulic cylinders (9) are both set to four, and are evenly distributed in a circular array on the surface of the upper side of the rotating disk (6).

6. The device for measuring the arc of the blade root of a steam turbine rotor blade according to claim 1, characterized in that: Gaskets (24) are fixedly connected to the inner surfaces of the first clamping plate (8) and the second clamping plate (10).

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