Balance degree detection device for turbine blade installation

Abstract

The utility model relates to the technical field of balance degree detection devices, and discloses a balance degree detection device for turbine blade installation, a fixing assembly comprises an installation mechanism and a detachable mechanism which is fixedly installed at the upper end of the installation mechanism in a threaded mode, and the bottom of a turbine is fixed in an inner cavity of a hollow round block. An inserting block at the bottom of a hollow round block drives a limiting block to be inserted from one end of a groove and one end of a limiting groove, so that an extending screw rod is inserted into an inner cavity of a penetrating groove, a rotating ring is rotated to drive a fixing nut to be tightly pressed on one side of a groove opening of the penetrating groove in a threaded mode, and then the hollow round block can be fixed to the upper end of a round bottom block; when the measured turbine blade rotates, due to the fact that all parts of the blade are unbalanced, the rotating shaft vibrates, the elastic support vibrates through the transmission shaft, the vibration sensor installed on the elastic support receives vibration information, converts the vibration information into an electric signal and transmits the electric signal to the signal processor, and the signal processor is electrically connected with the displayer. The display displays turbine blade balance information.

Description

Technical Field

[0001] The utility model relates to the technical field of balance detection devices, in particular to a balance detection device for installing turbine blades. Background Art

[0002] A turbine is a fan in a car or airplane engine that uses exhaust gas to blow fuel vapor into the engine to improve engine performance. It is mainly used to increase the engine's power and torque. A dynamic balancing machine is a machine that measures the size and position of the imbalance of a rotating object. When a rotating object rotates around its axis, centrifugal force is generated due to the uneven distribution of mass relative to the axis. This unbalanced centrifugal force acts on the rotating object, causing vibration, noise, and accelerated wear, which seriously affects the performance and life of the product. Therefore, a dynamic balancing machine is needed to detect turbine blades.

[0003] For example, a turbine blade balancing device with application number CN202023153232.0 includes a dial, a base, a casing, a protective cover, a rotating shaft, a drive motor, a vibration sensor, an infrared sensor and a signal processor; the dial and the base are arranged on the rotating shaft, and the base is arranged on the top of the dial; the bottom end face of the casing is connected to the base, and the protective cover is installed on the top of the casing; the output shaft of the drive motor is connected to the bottom end face of the rotating shaft, and the vibration sensor is arranged below the dial, and the drive motor, the vibration sensor and the infrared sensor are all electrically connected to the signal processor. This application uses an infrared sensor to sense the light and dark changes on the rotating shaft, and after converting it into an electrical signal and transmitting it to the signal processor, the speed and angle information can be obtained, which solves the problem of manually installing the dynamic balancing block blades.

[0004] When using the turbine blade balancing device proposed in the above patent, it is necessary to insert the connecting block at the lower end of the turbine blade into the upper end of the fixing plate, fix it with screws, and then perform a turbine blade balance test. This fixing method needs to be fixed on the turbine body, and improper operation may easily cause damage to the turbine base.

[0005] Therefore, we propose a balance detection device for turbine blade installation to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the present utility model is to provide a balance detection device for turbine blade installation, so as to solve the problem that the turbine blade balancing device proposed in the above background technology needs to insert the connecting block at the lower end of the turbine blade into the upper end of the fixing plate when in use, and fix it with screws before performing the turbine blade balance detection. This fixing method needs to be fixed on the turbine body, and improper operation may easily cause damage to the turbine base.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a balance detection device for turbine blade installation, comprising a dial, a base, a casing, a protective cover, a fixing assembly, a rotating shaft, a transmission shaft, a drive motor, a vibration sensor, a signal processor, an angle sensor and an infrared sensor, wherein the upper end of the dial is provided with a base, the upper end of the base is provided with a casing, the upper end of the casing is provided with a protective cover, the lower ends of the dial and the base are provided with a rotating shaft, the outer wall of the rotating shaft is connected to the transmission shaft, the lower end of the rotating shaft is provided with a drive motor, the vibration sensor is provided below the dial, the drive motor, the vibration sensor and the infrared sensor are all electrically connected to the signal processor, the signal processor is electrically connected to the angle sensor, the top of the base is fixedly provided with a fixing assembly, and the fixing assembly is installed in the inner cavity of the casing;

[0008] The fixing assembly includes a mounting mechanism and a detachable mechanism threadedly fixed to the upper end of the mounting mechanism. The upper end of the detachable mechanism clamps and fixes a turbine mechanism, and the turbine mechanism is mounted on the upper end of the mounting mechanism through the detachable mechanism.

[0009] Preferably, the mounting mechanism includes a round bottom block and a groove formed in the middle of the upper end of the round bottom block.

[0010] Preferably, an extension screw is fixedly installed in the middle of one end of the inner wall of the groove, and limiting grooves are respectively provided in the middle of both sides of the inner wall of the groove.

[0011] Preferably, the outer surface of the extension screw is threadedly connected with a fixing nut, and a rotating ring is fixedly installed around the outer wall of the fixing nut through a round rod.

[0012] Preferably, the detachable mechanism includes a hollow circular block and threaded rods respectively threadedly connected to both sides of the inner wall of the hollow circular block, and one end of the threaded rod is connected to a semicircular clamping plate through a bearing.

[0013] Preferably, an insert block is fixedly installed in the middle of the lower end of the bottom surface of the hollow circular block, a through groove is opened in the middle of one end of the outer wall of the insert block, and limit blocks are fixedly installed on both sides of the outer wall of the insert block.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The operator fixes the bottom of the turbine in the inner cavity of the hollow round block, drives the insertion block at the bottom of the hollow round block to insert the limit block from the groove and one end of the limit groove, so that the extension screw is inserted into the inner cavity of the through groove. The operator drives the fixing nut thread to press on one side of the notch of the through groove by rotating the rotating ring, and then the hollow round block can be fixed on the upper end of the round bottom block. Then, the rotating shaft is started to perform a balance test on the turbine blades.

[0016] 2. The operator places the bottom of the turbine into the inner cavity of the hollow round block, and then rotates the threaded rods that are threadedly connected to both sides of the outer wall of the hollow round block, so that the threaded rods drive the semicircular clamping plates under the action of the bearings to clamp the bottom of the turbine in the inner cavity of the hollow round block, thereby completing the installation and fixation of the turbine to be tested. At the same time, when disassembling, the turbine base can be loosened by rotating the threaded rods in the opposite direction to drive the semicircular clamping plates. The installation and disassembly are convenient and the turbine structure itself is not easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a diagram of the balance detection structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the installation mechanism of the utility model;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the detachable mechanism of the present utility model.

[0021] In the figure: 1. Dial; 2. Base; 3. Casing; 4. Protective cover; 5. Fixing assembly; 51. Mounting mechanism; 511. Round bottom block; 512. Groove; 513. Extension screw; 514. Limiting groove; 515. Fixing nut; 516. Rotating ring; 52. Removable mechanism; 521. Hollow round block; 522. Threaded rod; 523. Semicircular splint; 524. Insert block; 525. Through groove; 526. Limiting block; 53. Turbine mechanism; 6. Rotating shaft; 7. Transmission shaft; 8. Drive motor; 9. Vibration sensor; 10. Signal processor; 11. Angle sensor; 12. Infrared sensor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figure 1-Figure 3A balance detection device for turbine blade installation includes a dial 1, a base 2, a casing 3, a protective cover 4, a fixing component 5, a rotating shaft 6, a transmission shaft 7, a drive motor 8, a vibration sensor 9, a signal processor 10, an angle sensor 11 and an infrared sensor 12. The base 2 is provided at the upper end of the dial 1, the casing 3 is provided at the upper end of the base 2, and the protective cover 4 is provided at the upper end of the casing 3. The casing 3 is a cylindrical hollow structure.

[0024] A rotating shaft 6 is provided at the lower end of the dial 1 and the base 2, and a transmission shaft 7 is connected to the outer wall of the rotating shaft 6. A driving motor 8 is provided at the lower end of the rotating shaft 6. A vibration sensor 9 is provided below the dial 1. The driving motor 8, the vibration sensor 9, and the infrared sensor 12 are all electrically connected to the signal processor 10. A vibration sensor 9 is provided at one end of the transmission shaft 7. The vibration sensor 9 obtains an electrical signal and transmits it to the signal processor 10. The signal processor 10 is electrically connected to an angle sensor 11, and the angle sensor 11 is electrically connected to an infrared sensor 12. A fixing component 5 is fixedly installed on the top of the base 2, and the fixing component 5 is installed in the inner cavity of the casing 3.

[0025] When the balance detection device performs detection work, an angle mark can be made on the turbine blade under test before it rotates. During the measurement process, the infrared sensor 12 arranged at the bottom of the drive motor 8 can sense the light and dark changes of the angle mark on the turbine blade, obtain the angle signal and convert it into an electrical signal and transmit it to the signal processor 10. The turbine blade balancing device also includes a system and a display. The signal processor 10 is electrically connected to the display. The display displays the balance information of the turbine blade. The signal processor 10 processes the angle signal and the vibration signal and converts them into vibration information and angle information. The system extracts these two types of information, compares the speed, vibration information and angle information, and calculates the imbalance of the turbine blade under test. The signal processor 10 is electrically connected to the display. The display displays the balance information of the turbine blade, including the weight and angle of each part of the turbine blade under test.

[0026] The structures and working principles of the dial 1, base 2, housing 3, protective cover 4, rotating shaft 6, transmission shaft 7, drive motor 8, vibration sensor 9, signal processor 10, angle sensor 11, and infrared sensor 12 are the same as the working principles of the dial, base, housing, protective cover, rotating shaft, drive motor, vibration sensor, infrared sensor, signal processor, fixing plate, angle sensor, connecting block, support plate, and transmission shaft in publication number CN214303953U, and are not repeated here.

[0027] The fixing assembly 5 comprises a mounting mechanism 51, a detachable mechanism 52 fixedly installed on the upper end of the mounting mechanism 51, and a turbine mechanism 53 fixedly installed on the upper end of the detachable mechanism 52.

[0028] The mounting mechanism 51 comprises a circular bottom block 511 and a groove 512 formed in the middle of the upper end of the circular bottom block 511.

[0029] The inner wall of the groove 512 is fixedly installed with an extension screw 513 at the middle of one end, and is formed with a limiting groove 514 at the middle of each side.

[0030] The outer surface of the extension screw 513 is threadedly connected with a fixing nut 515, and the outer wall of the fixing nut 515 is fixedly installed with a rotating ring 516 around the circular rod.

[0031] The bottom surface of the hollow circular block 521 is fixedly installed with an insertion block 524 at the middle of the lower end, the outer wall of the insertion block 524 is formed with a through groove 525 at the middle of one end, and the outer wall of the insertion block 524 is fixedly installed with a limiting block 526 at each side.

[0032] In this embodiment, the operator places the bottom of the turbine into the inner cavity of the hollow circular block 521, and then rotates the threaded rods 522 threadedly connected with the outer wall of the hollow circular block 521 at each side, so that the half circular clamping plates 523 drive the bottom of the turbine to be clamped and fixed in the inner cavity of the hollow circular block 521, and the insertion block 524 at the bottom of the hollow circular block 521 drives the limiting block 526 to be inserted from one end of the groove 512 and the limiting groove 514, so that the extension screw 513 is inserted into the inner cavity of the through groove 525, and the operator drives the fixing nut 515 to be threadedly pressed at one side of the groove of the through groove 525 by rotating the rotating ring 516, so as to fix the hollow circular block 521 at the upper end of the circular bottom block 511.

[0033] Example 2: This example is an improvement made on the basis of Example 1. For details, please refer to Figure 4 The detachable mechanism 52 includes a hollow round block 521 and a threaded rod 522 respectively threadedly connected to both sides of the inner wall of the hollow round block 521. One end of the threaded rod 522 is connected to a semicircular clamping plate 523 through a bearing. The threaded rod 522 drives the semicircular clamping plate 523 to fix the lower end of the turbine mechanism 53 in the inner cavity of the hollow round block 521.

[0034] In this embodiment: when the operator inspects the turbine, the operator places the bottom of the turbine into the inner cavity of the hollow round block 521, and then rotates the threaded rods 522 threadedly connected to the two sides of the outer wall of the hollow round block 521, so that the threaded rods 522 drive the semicircular clamping plates 523 under the action of the bearing to clamp the bottom of the turbine in the inner cavity of the hollow round block 521, thereby completing the installation and fixation of the turbine to be inspected. At the same time, when disassembling, the turbine base can be loosened by rotating the threaded rods 522 in the opposite direction to drive the semicircular clamping plates 523. The installation and disassembly are convenient and the turbine structure itself is not easily damaged.

[0035] Working principle: When the operator is testing the turbine, he places the bottom of the turbine into the inner cavity of the hollow round block 521, and then rotates the threaded rods 522 connected to the outer wall of the hollow round block 521 on both sides, so that the threaded rods 522 drive the semicircular clamping plates 523 under the action of the bearing to clamp the bottom of the turbine in the inner cavity of the hollow round block 521, thereby completing the installation and fixation of the turbine to be tested, and drives the insertion block 524 at the bottom of the hollow round block 521 to drive the limit block 526 to be inserted from the groove 512 and one end of the limit groove 514, so that the extension screw 513 is inserted into the inner cavity of the through groove 525. The operator rotates the rotating ring 5 16 drives the fixing nut 515 to be threaded and pressed against one side of the notch of the through groove 525, so that the hollow round block 521 can be fixed to the upper end of the round bottom block 511. When the rotating shaft 6 starts to rotate, all the structures on the upper part of the turbine blade balancing device rotate synchronously, and the rotation direction is consistent. When the measured turbine blade rotates, the rotating shaft 6 vibrates due to the imbalance of various parts of the blade, and the elastic support vibrates through the transmission shaft 7, so that the vibration sensor 9 installed on the elastic support receives the vibration information and converts it into an electrical signal and transmits it to the signal processor 10. The signal processor 10 is electrically connected to the display, and the display shows the turbine blade balance information.

[0036] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0037] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A balance detection device for turbine blade installation, characterized by: The invention comprises a scale plate (1), a base (2), a housing (3), a protective cover (4), a fixing assembly (5), a rotating shaft (6), a transmission shaft (7), a driving motor (8), a vibration sensor (9), a signal processor (10), an angle sensor (11) and an infrared sensor (12), wherein the upper end of the scale plate (1) is provided with a base (2), the upper end of the base (2) is provided with a housing (3), the upper end of the housing (3) is provided with a protective cover (4), and the lower ends of the scale plate (1) and the base (2) are provided with A rotating shaft (6), an outer wall of the rotating shaft (6) is connected to a transmission shaft (7), a driving motor (8) is provided at the lower end of the rotating shaft (6), a vibration sensor (9) is provided below the scale plate (1), the driving motor (8), the vibration sensor (9), and the infrared sensor (12) are all electrically connected to the signal processor (10), the signal processor (10) is electrically connected to the angle sensor (11), a fixing assembly (5) is fixedly installed on the top of the base (2), and the fixing assembly (5) is installed in the inner cavity of the housing (3); The fixing assembly (5) comprises a mounting mechanism (51) and a detachable mechanism (52) threadedly fixed to the upper end of the mounting mechanism (51); a turbine mechanism (53) is clamped and fixed at the upper end of the detachable mechanism (52); and the turbine mechanism (53) is mounted on the upper end of the mounting mechanism (51) via the detachable mechanism (52).

2. The balance detection device for turbine blade installation according to claim 1, characterized in that: The mounting mechanism (51) comprises a round bottom block (511) and a groove (512) provided in the middle of the upper end of the round bottom block (511).

3. The balance detection device for turbine blade installation according to claim 2, characterized in that: An extension screw (513) is fixedly mounted in the middle of one end of the inner wall of the groove (512), and limiting grooves (514) are respectively provided in the middle of both sides of the inner wall of the groove (512).

4. The balance detection device for turbine blade installation according to claim 3, characterized in that: The outer surface of the extension screw rod (513) is threadedly connected to a fixing nut (515), and a rotating ring (516) is fixedly mounted on the outer wall of the fixing nut (515) via a round rod.

5. The balance detection device for turbine blade installation according to claim 1, characterized in that: The detachable mechanism (52) comprises a hollow circular block (521) and threaded rods (522) respectively threadedly connected to both sides of the inner wall of the hollow circular block (521), and one end of the threaded rod (522) is connected to a semicircular clamping plate (523) via a bearing.

6. The device for detecting the balance of turbine blades according to claim 5, characterized in that: An insert block (524) is fixedly mounted in the middle of the lower end of the bottom surface of the hollow circular block (521), a through groove (525) is provided in the middle of one end of the outer wall of the insert block (524), and limit blocks (526) are fixedly mounted on both sides of the outer wall of the insert block (524).

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