Stator blade balance degree inspection device

Abstract

The utility model relates to the field of stator blade detection, in particular to a stator blade balance degree inspection device, which comprises a workbench, the upper side of the workbench is fixedly connected with a placing plate, the upper side of the workbench is provided with a data transmission instrument, a balance degree detector and a display, and the data transmission instrument is electrically connected with the balance degree detector and the display. A fixing ring block is arranged on the upper side of the containing plate, a clamping mechanism is arranged on the upper side of the containing plate, and stator blades with different inner diameters can be fixed and clamped from inside to outside through cooperation of a sliding rod, a moving block and a clamping block which are in sliding connection and a rotatable screw rod and an inverted-cone-shaped block; the clamping block can flexibly adapt to stator blades of various sizes, the clamping block does not need to be replaced, the detection efficiency and convenience are improved, meanwhile, rotation of the screw can be completed through a simple tool or manual operation, and the clamping mechanism can be adjusted easily, conveniently and rapidly.

Description

Technical Field

[0001] The utility model belongs to the technical field of stator blade detection, in particular to a stator blade balance detection device. Background Art

[0002] Stator blades, also commonly known as stator blades, refer to fixed blades located after the inlet guide vanes in a turbine, which are used to distribute the airflow to different flow channels in the turbine. The stator blades and the stator are connected to each other. In a compressor or turbine, the stator blades are usually fixed to the stator to form a stator assembly. The stator is a fixed part in the compressor or turbine, and the stator blades are the key components on it, used to guide and change the flow direction of the airflow. At the same time, the balance test can be performed on the static stator impeller as well as on the rotating one.

[0003] A search revealed a prior art Chinese patent, published with the publication number CN205090901U and the authorization date 2016-03-16, that discloses a fan stator precision-forged blade edge plate profile measuring tool, belonging to the field of aircraft engine component inspection technology. This utility model comprises a base, a blade positioning and clamping portion, and a blade edge plate measuring portion. The blade positioning and clamping portion comprises a column, an upper clamping assembly, an upper blade cross-section point positioning arm, a lower clamping assembly, and a lower blade cross-section point positioning arm, the upper clamping assembly, the upper blade cross-section point positioning arm, the lower clamping assembly, and the lower blade cross-section point positioning arm being sequentially arranged on the column from top to bottom. The blade edge plate measuring portion comprises a dial indicator and a measuring assembly, the measuring assembly being freely disposed on the upper surface of the base. The dial indicator is mounted on the measuring assembly and displays the measurement reading. Compared to the prior art, this utility model not only boasts a novel structure and simplified operation, but also effectively improves measurement accuracy and accelerates inspection speed, effectively meeting the mass production requirements of fan stator precision-forged blades.

[0004] However, the device still has the following defects: although it can improve the problem of using the edge plate profile of the fan stator blade as a positioning reference and using the edge plate profile template for comparative measurement, it is greatly affected by human factors, the detection data cannot be quantified, the detection error is large, and it is not suitable for mass production of fan stator precision forging blades. However, in some cases, when the balance of the stator impeller is detected, the installed stator and stator blades are often placed on the rotating shaft, and the balance of the stator impeller is detected by the detection instrument. However, when it is necessary to detect the balance of stator impellers with different inner diameters, it is often necessary to change the diameter length that the rotating shaft can connect. In most cases, when changing the clamping diameter length, the staff are often required to turn more screws, which is not only troublesome and cumbersome to operate, but also time-consuming and labor-intensive. Utility Model Content

[0005] In response to the above problems, the present invention provides a stator blade balance inspection device, comprising a workbench, a placement plate fixedly connected to the upper side of the workbench, a data transmitter, a balance detector and a display provided on the upper side of the workbench, and the data transmitter is electrically connected to the balance detector and the display, a fixed ring block is provided on the upper side of the placement plate, and a clamping mechanism is provided on the upper side of the placement plate;

[0006] The clamping mechanism includes a sliding rod slidably connected to the inner side of the fixed ring block, and the two ends of the sliding rod are fixedly connected to a moving block and a clamping block respectively. The moving block is arranged on the inner side of the fixed ring block, and the clamping block is arranged on the outer side of the fixed ring block, and the side of the moving block away from the clamping block is inclined.

[0007] Furthermore, the inner side of the fixed ring block is rotatably connected to a screw, the inner side of the fixed ring block is fixedly connected to a fixed rod, the outer side of the fixed rod is slidably connected to an inverted cone block, the inverted cone block is threadedly connected to the outer side of the screw, and the screw and the inverted cone block are concentrically arranged, and the inverted cone block is arranged on the outer side of the moving block.

[0008] Furthermore, a spring is fixedly connected to the inner side of the fixed ring block, one end of the spring is fixedly connected to the moving block, and the spring is sleeved on the outer side of the sliding rod.

[0009] Furthermore, a sliding groove is provided on the inner side of the fixed ring block, and a sliding block is fixedly connected to the lower side of the movable block, and the sliding block is slidably connected to the inner side of the sliding groove.

[0010] Furthermore, the upper end of the fixing rod is fixedly connected to a fixing plate, and the fixing plate is arranged on the outside of the screw rod.

[0011] Furthermore, the outer side of the screw is threadedly connected with a locking nut, and the locking nut is arranged on the upper side of the inverted cone block.

[0012] Furthermore, a rubber layer is movably bonded to one side of the clamping block, and the rubber layer is arranged on a side of the clamping block away from the sliding rod.

[0013] Furthermore, an installation groove is opened on the inner side of the workbench, and a servo motor is arranged on the inner side of the installation groove. The output end of the servo motor passes through the workbench and the placement plate. The output end of the servo motor is connected to the lower side of the fixed ring block through a coupling, and a placement box is arranged on the upper side of the workbench.

[0014] The beneficial effects of the utility model are:

[0015] 1. The sliding rod, moving block and clamping block connected by sliding in this device, in conjunction with the rotatable screw and inverted tapered block, can fix and clamp stator blades of different inner diameters from the inside out, making the clamping block flexible enough to adapt to stator blades of various sizes without the need to replace the clamping block, thereby improving detection efficiency and convenience. At the same time, the rotation of the screw can be completed by simple tools or manual operation, making the adjustment of the clamping mechanism simple and quick.

[0016] 2. The setting of the slide groove and the slider in this device can limit the movement of the moving block, so that the moving block can be sufficiently stable and not prone to shaking when it is reset by the elasticity of the spring or moved by the pushing of the inverted cone block.

[0017] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Shows a structural main body diagram according to an embodiment of the present utility model;

[0020] Figure 2 It shows a schematic structural diagram of the fixed ring block and the placement plate according to an embodiment of the present utility model;

[0021] Figure 3 A schematic structural diagram of an inverted tapered block and a locking nut according to an embodiment of the present utility model is shown;

[0022] Figure 4 Shown according to the utility model Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 5 Shown according to the utility model Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0024] In the figure: 1. Workbench; 2. Placement plate; 31. Data transmitter; 32. Balance detector; 33. Display; 4. Placement box; 5. Fixed ring block; 6. Clamping mechanism; 61. Slide rod; 62. Moving block; 63. Clamping block; 64. Screw; 65. Inverted cone block; 66. Fixed rod; 71. Mounting slot; 72. Servo motor; 81. Slide slot; 82. Slider; 9. Spring; 10. Rubber layer; 11. Locking nut; 12. Fixed plate. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0026] The present invention provides a device for testing the balance of a stator blade, including a workbench 1, for example, Figure 1-Figure 5 shown.

[0027] A placement plate 2 is fixedly connected to the upper side of the workbench 1. A data transmitter 31, a balance detector 32 and a display 33 are provided on the upper side of the workbench 1, and the data transmitter 31 is electrically connected to the balance detector 32 and the display 33. A fixed ring block 5 is provided on the upper side of the placement plate 2, and a clamping mechanism 6 is provided on the upper side of the placement plate 2.

[0028] The clamping mechanism 6 includes a sliding rod 61 slidably connected to the inner side of the fixed ring block 5, and the two ends of the sliding rod 61 are fixedly connected with a moving block 62 and a clamping block 63 respectively. The moving block 62 is arranged on the inner side of the fixed ring block 5, and the clamping block 63 is arranged on the outer side of the fixed ring block 5, and the side of the moving block 62 away from the clamping block 63 is inclined.

[0029] The inner side of the fixed ring block 5 is rotatably connected to a screw rod 64, the inner side of the fixed ring block 5 is fixedly connected to a fixed rod 66, the outer side of the fixed rod 66 is slidably connected to an inverted cone block 65, the inverted cone block 65 is threadedly connected to the outer side of the screw rod 64, and the screw rod 64 and the inverted cone block 65 are concentrically arranged, and the inverted cone block 65 is arranged on the outer side of the moving block 62.

[0030] Specifically, the upper side of the placement plate 2 can be used to place the stator blades that need to be tested, and the balance detector 32 can detect the balance of the stator blades and transmit the information to the inner side of the data transmitter 31. After processing, the specific data is displayed on the display 33. At the same time, the data transmitter 31, the balance detector 32 and the display 33 are existing technologies in the field, so they are not elaborated here.

[0031] In addition, the fixed ring block 5 can be connected to the clamping mechanism 6, so that the clamping mechanism 6 can clamp the stator blades with different inner diameters. The downward movement of the inverted cone block 65 will push the moving block 62. When the moving block 62 is pushed, it will drive the clamping block 63 to move through the slide bar 61. The movement of the clamping block 63 can effectively fix and clamp the stator blades with different inner diameters from the inside to the outside, so that they can be smoothly detected by the balance detector 32.

[0032] In addition, the rotation of the screw 64 can smoothly limit the inverted conical block 65 through the fixed rod 66, driving the inverted conical block 65 to move downward, so that the inverted conical block 65 can smoothly push the movable block 62 by moving downward.

[0033] The inner side of the fixed ring block 5 is fixedly connected with a spring 9, one end of the spring 9 is fixedly connected to the moving block 62, and the spring 9 is sleeved on the outer side of the slide rod 61, as shown in FIG. Figure 1-Figure 5 shown.

[0034] A sliding groove 81 is formed on the inner side of the fixed ring block 5 , and a sliding block 82 is fixedly connected to the lower side of the moving block 62 . The sliding block 82 is slidably connected to the inner side of the sliding groove 81 .

[0035] The upper end of the fixing rod 66 is fixedly connected to the fixing plate 12 , and the fixing plate 12 is arranged on the outside of the screw rod 64 .

[0036] Specifically, the setting of the spring 9 enables the slide bar 61 and the clamping block 63 to automatically reset smoothly through the elasticity of the spring 9 after being pushed, making the use and reset of the clamping block 63 more convenient;

[0037] In addition, the arrangement of the slide groove 81 and the slider 82 can limit the movement of the movable block 62, so that the movable block 62 is sufficiently stable and not prone to shaking when it is reset by the elasticity of the spring 9 or when it is moved by the pushing of the inverted tapered block 65;

[0038] In addition, the fixing plate 12 can play a certain limiting role on the screw rod 64 through its connection with the fixing rod 66, so that it is not easy to deviate or tilt when it is used and rotated.

[0039] The outer side of the screw rod 64 is threadedly connected with a locking nut 11, and the locking nut 11 is arranged on the upper side of the inverted cone block 65. Figure 1-Figure 5 shown.

[0040] A rubber layer 10 is movably bonded to one side of the clamping block 63 . The rubber layer 10 is disposed on a side of the clamping block 63 away from the slide rod 61 .

[0041] An installation groove 71 is provided on the inner side of the workbench 1, and a servo motor 72 is provided on the inner side of the installation groove 71. The output end of the servo motor 72 passes through the workbench 1 and the placement plate 2. The output end of the servo motor 72 is connected to the lower side of the fixed ring block 5 through a coupling. A placement box 4 is provided on the upper side of the workbench 1.

[0042] Specifically, the setting of the locking nut 11 can be used to limit the inverted conical block 65 by moving down to the upper side of the inverted conical block 65 after the inverted conical block 65 moves down to the required position, making it more difficult to rotate when in use;

[0043] In addition, the rubber layer 10 can not only reduce the wear of the clamping block 63 on the inner side of the stator impeller, but also increase the friction between the clamping block 63 and the inner side of the stator impeller, making it more stable when clamping and using;

[0044] In addition, the servo motor 72 can drive the fixed ring block 5 and the clamping mechanism 6 to rotate the stator impeller clamped from the inside through operation, so that the stator impeller can be smoothly detected by the balance detector 32. At the same time, the placement box 4 can be used to place and store the tools needed by the staff, making it more convenient to take the tools.

[0045] The working principle of the stator blade balance inspection device proposed in the embodiment of the present invention is as follows:

[0046] When the device is in use, the staff can manually rotate the screw 64 according to the inner diameter of the stator blade. Since the screw 64 is threadedly connected to the inverted conical block 65, and the inverted conical block 65 is limited by the fixed rod 66, rotating the screw 64 will cause the inverted conical block 65 to move downward along the fixed rod 66. The downward movement of the inverted conical block 65 will push the moving block 62. Since the side of the moving block 62 away from the clamping block 63 is inclined, the moving block 62 will be pushed toward the center of the fixed ring block 5 and the clamping block 63 will be driven to move outward through the sliding rod 61, thereby clamping the inner side of the stator blade. When the clamping block 63 clamps the stator blade After clamping, the locking nut 11 is rotated to move it down to the upper side of the inverted conical block 65 to limit the inverted conical block 65 to prevent it from loosening. After that, the servo motor 72 can be started. The output end of the servo motor 72 is connected to the lower side of the fixed ring block 5 through a coupling. Therefore, the operation of the servo motor 72 will drive the fixed ring block 5 and the clamping mechanism 6 to rotate together, thereby rotating the stator blades. At this time, the balance detector 32 can be started to detect the balance of the clamped stator blades. The detection data will be transmitted to the data transmission instrument 31 for processing, and the specific data will be displayed on the display 33.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A device for inspecting the balance of a stator blade, comprising a workbench (1), characterized in that: A placement plate (2) is fixedly connected to the upper side of the workbench (1); a data transmitter (31), a balance detector (32) and a display (33) are provided on the upper side of the workbench (1); and the data transmitter (31) is electrically connected to the balance detector (32) and the display (33); a fixed ring block (5) is provided on the upper side of the placement plate (2); and a clamping mechanism (6) is provided on the upper side of the placement plate (2); The clamping mechanism (6) comprises a slide rod (61) slidably connected to the inner side of the fixed ring block (5); the two ends of the slide rod (61) are respectively fixedly connected to a moving block (62) and a clamping block (63); the moving block (62) is arranged on the inner side of the fixed ring block (5); the clamping block (63) is arranged on the outer side of the fixed ring block (5); and the side of the moving block (62) away from the clamping block (63) is inclined.

2. A stator blade balance inspection device according to claim 1, characterized in that: The inner side of the fixed ring block (5) is rotatably connected to a screw rod (64), the inner side of the fixed ring block (5) is fixedly connected to a fixed rod (66), the outer side of the fixed rod (66) is slidably connected to an inverted cone block (65), the inverted cone block (65) is threadedly connected to the outer side of the screw rod (64), and the screw rod (64) and the inverted cone block (65) are concentrically arranged, and the inverted cone block (65) is arranged on the outer side of the moving block (62).

3. The stator blade balance inspection device according to claim 2, characterized in that: A spring (9) is fixedly connected to the inner side of the fixed ring block (5), one end of the spring (9) is fixedly connected to the moving block (62), and the spring (9) is sleeved on the outer side of the slide rod (61).

4. A stator blade balance inspection device according to claim 3, characterized in that: A sliding groove (81) is provided on the inner side of the fixed ring block (5), and a slider (82) is fixedly connected to the lower side of the movable block (62), and the slider (82) is slidably connected to the inner side of the sliding groove (81).

5. The stator blade balance inspection device according to claim 4, characterized in that: The upper end of the fixing rod (66) is fixedly connected to a fixing plate (12), and the fixing plate (12) is arranged on the outside of the screw rod (64).

6. The stator blade balance inspection device according to claim 3, characterized in that: The outer side of the screw rod (64) is threadedly connected to a locking nut (11), and the locking nut (11) is arranged on the upper side of the inverted cone block (65).

7. The stator blade balance inspection device according to claim 2, characterized in that: A rubber layer (10) is movably bonded to one side of the clamping block (63), and the rubber layer (10) is arranged on a side of the clamping block (63) away from the slide rod (61).

8. The stator blade balance inspection device according to claim 6, characterized in that: The inner side of the workbench (1) is provided with a mounting groove (71), the inner side of the mounting groove (71) is provided with a servo motor (72), the output end of the servo motor (72) passes through the workbench (1) and the placement plate (2), the output end of the servo motor (72) is connected to the lower side of the fixed ring block (5) through a coupling, and a placement box (4) is provided on the upper side of the workbench (1).

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