A high and low speed integrated blade predictive maintenance test bed and operation method

Abstract

The present invention discloses a high- and low-speed integrated blade predictive maintenance test bed and an operation method thereof. The test bed includes a test bench, an industrial computer and a display; the industrial computer is respectively connected to the test bench and the display signal; the test bench includes a bottom plate, a bearing seat, a blade module, a gear box, a drive motor and a data collector; the blade module, the gear box and the drive motor are sequentially arranged on the bearing seat from left to right via the main shaft; the blade module is detachable and rotatably connected to the gear box, and the blade module includes two types of high-speed blades and low-speed blades. The present invention provides a blade predictive maintenance test bed that integrates high-speed blades with low-speed blades, which can realize the replacement of high- and low-speed blades and collect operating data; the present invention does not need to build two high and low test benches separately; collects operating data, and realizes prediction through the established fault diagnosis model and life prediction model, and performs maintenance according to the prediction results.

Description

Technical Field

[0001] The present invention relates to the technical field of blade monitoring, and in particular to a high- and low-speed integrated blade predictive maintenance test bed and an operating method. Background Art

[0002] Blades have a very wide range of applications and are used in various fields to varying degrees. Especially in the aerospace and wind power generation fields, blades are vital equipment. Therefore, necessary predictive maintenance of blades in the two fields is an urgent need of the current market to ensure the safe and economical operation of blades.

[0003] The blades used in the aerospace field are mainly high-speed blades, such as aircraft turbine blades, etc. Turbine blades are important components of the turbine section in gas turbine engines. The high-speed rotating blades are responsible for sucking high-temperature and high-pressure airflow into the burner to maintain the operation of the engine. However, in steam turbine engines and gas turbine engines, strong vibrations or resonances may cause metal fatigue, and metal fatigue of the blades will cause the aircraft engine to fail. Once the aircraft engine fails, it is not only a matter of losing a lot of resources such as manpower and financial resources, but also a direct threat to the lives and safety of the general public.

[0004] In the field of wind power generation, low-speed blades are mainly used. As one of the key components of wind turbines, the cost of blades accounts for about 15%-20% of the total cost of the whole machine. The blades of wind turbines are affected by weather and time. The blades will gradually corrode or the material will fatigue due to long-term use, which will lead to damage and damage to the blades. If the damage to the blades is not discovered in advance, it will endanger the entire wind turbine and even the entire wind farm, resulting in huge resource losses and serious impacts on the lives of local residents.

[0005] In view of the two typical situations mentioned above, we must perform predictive maintenance on both high-speed and low-speed blades to nip the possibility of harm caused by blade damage in the bud.

[0006] At present, there are many predictive maintenance platforms for monitoring high-speed blades or low-speed blades. However, the existing blade monitoring platforms are almost only designed and built for high-speed blades or low-speed blades. Such platforms have the following problems:

[0007] 1. Single function. Since high-speed blades are smaller than low-speed blades and their speed requirements are quite different, a single high-speed blade monitoring platform cannot monitor low-speed blades, and a single low-speed blade cannot monitor high-speed blades. That is, the existing monitoring platform can only monitor high or low speed, and cannot take both into account at the same time.

[0008] 2. Existing monitoring platforms mostly focus on high-speed blades, and there is a huge demand for platforms for low-speed blades. However, due to factors such as the large size of low-speed blades and high reduction ratio requirements, it is difficult to design a predictive maintenance platform for low-speed blades.

[0009] 3. Currently, the verification platform for a single high-speed or low-speed blade is limited to functions such as data collection and status monitoring, and the predictive maintenance function has not yet been realized.

[0010] Therefore, based on the strong demand for research on predictive maintenance technology for high-speed and low-speed blades, in order to save the loss of manpower, space and other resources when building blades of the two speeds and improve the functionality of predictive maintenance, it is urgent to develop a blade predictive maintenance test bench that integrates high-speed blades and low-speed blades. Summary of the invention

[0011] The purpose of the present invention is to provide a high and low speed integrated blade predictive maintenance test bed. The device of the present invention can simultaneously meet the needs of high and low speed blade maintenance, predict the life of the blade, and improve the working performance and service life of the blade.

[0012] The technical solution of the present invention is as follows: a high- and low-speed integrated blade predictive maintenance test bed, comprising a test bench, an industrial computer and a display; the industrial computer is respectively connected to the test bench and the display signal; the test bench comprises a base plate, a bearing seat, a blade module, a gear box, a drive motor and a data collector; the blade module, the gear box and the drive motor are sequentially connected from left to right via a main shaft and are vertically arranged on the bearing seat; the blade module is detachably rotatably connected to the gear box through a coupling, the blade module comprises two types of high-speed blades and low-speed blades, and the gear box is a multi-stage gear box that meets different speed ratios.

[0013] In the aforementioned high and low speed integrated blade predictive maintenance test bed, the blade module is composed of a blade and a corresponding test bench, that is, the blade module includes high speed and low speed. The high speed is composed of a high speed blade and a high speed blade test bench, and the low speed is composed of a low speed blade and a low speed blade test bench.

[0014] In the aforementioned high and low speed integrated blade predictive maintenance test bed, the data collector is connected to the industrial computer by signal; the data collector collects the operating data of the test bench and transmits it to the industrial computer.

[0015] In the aforementioned high and low speed integrated blade predictive maintenance test bed, the bearing seat is provided with a blade tip timing sensor and an acceleration sensor.

[0016] In the aforementioned high and low speed integrated blade predictive maintenance test bed, the blade tip timing sensor is arranged on the high speed blade, and the blade tip timing sensor is arranged on the blade surface of the high speed blade and is connected to the data acquisition device signal; the blade tip timing sensor can obtain the vibration change data of the high speed blade in the running state;

[0017] The acceleration sensor is arranged on the low-speed blade. The acceleration sensor is arranged on the blade surface of the low-speed blade and is connected to the data collector signal. The acceleration sensor can obtain the vibration change data of the low-speed blade when it is in operation.

[0018] In the aforementioned high and low speed integrated blade predictive maintenance test bed, a temperature sensor corresponding to the blade module is provided on the bearing seat; the temperature sensor is connected to the data acquisition device signal, and the temperature sensor can obtain the temperature change data of the blade module when it is working.

[0019] A method for operating a high and low speed integrated blade predictive maintenance test bed, the steps are as follows:

[0020] A. Installation and debugging of high-speed blades: Install the high-speed blades on the test bench and connect them to the gearbox; install and debug the blade tip timing sensor and temperature sensor;

[0021] B. High-speed blade data collection: Start the drive motor, drive the high-speed blade to rotate through the gear box, and the blade tip timing sensor and temperature sensor record and transmit the operating data of the high-speed blade;

[0022] C. Installation and debugging of low-speed blades: After the high-speed blades have finished running, turn off the drive motor, remove the high-speed blades from the test bench, and install the low-speed blades;

[0023] D. Adjust the gearbox speed ratio;

[0024] E. Low-speed blade data collection: Start the drive motor, drive the low-speed blade to rotate through the gear box, and the acceleration sensor and temperature sensor record and transmit the operation data of the low-speed blade;

[0025] F. Complete the test.

[0026] In the aforementioned high and low speed integrated blade predictive maintenance test bed operation method, the operation data is recorded and transmitted as described in step B and step E, and its specific content is as follows: the blade tip timing sensor and temperature sensor record the operation data and transmit it to the data collector, the data collector analyzes the operation data and transmits it to the industrial computer, and finally the industrial computer performs predictive maintenance through the established fault diagnosis model and life prediction model.

[0027] Compared with the prior art, the present invention provides a blade predictive maintenance test bed that integrates high-speed blades and low-speed blades. The test bed can quickly and conveniently realize the replacement of high and low-speed blades, and collect data such as the rotational speed, vibration and temperature of the blades under operating conditions. When the present invention is used to test and maintain high and low-speed blades, it is only necessary to customize the required high-speed blades or low-speed blades, and there is no need to build two test benches, a high-speed test bench and a low-speed test bench, respectively. The device of the present invention can be used to collect operating data of high-speed blades and low-speed blades, and through the established fault diagnosis model and life prediction model, it can realize the prediction of the operating state and remaining life of the blades, and carry out targeted maintenance of the blades according to the prediction results to increase the service life of the blades. At the same time, the present invention also provides a corresponding operation method of the device, and the test bench can be arbitrarily combined with the high-speed blades or the low-speed blades, so that the predictive maintenance of the blades can be studied more conveniently.

[0028] Therefore, the device of the present invention can simultaneously meet the maintenance requirements of high and low speed blades, predict the life of the blades, and improve the working performance and service life of the blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the test bed of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the test bed (high-speed blade) of the present invention;

[0031] Figure 3 It is a schematic diagram of the structure of the test bed (low-speed blade) of the present invention;

[0032] Figure 4 It is a schematic flow diagram of the operating method of the present invention.

[0033] The markings in the attached figure are: 100-test bench, 200-industrial computer, 300-display, 1-blade module, 11-high speed blade, 12-low speed blade, 2-gear box, 3-data collector, 4-drive motor, 5-base plate, 6-bearing seat, 7-temperature sensor, 8-blade tip timing sensor, 9-spindle DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0035] Embodiment. A high and low speed integrated blade predictive maintenance test bed, such as Figure 1-3As shown, it includes a test bench 100, an industrial computer 200 and a display 300; the industrial computer 200 is respectively connected to the test bench 100 and the display 300 by signals; the test bench 100 includes a base plate 5, a bearing seat 6, a blade module 1, a gear box 2, a drive motor 4 and a data acquisition device 3; the blade module 1, the gear box 2 and the drive motor 4 are sequentially connected from left to right via a main shaft 9 and are vertically arranged on the bearing seat 6; the blade module 1 is detachably rotatably connected to the gear box 2 through a coupling, the blade module 1 includes two types of high-speed blades 11 and low-speed blades 12, and the gear box 2 is a multi-stage gear box that meets different speed ratios.

[0036] The blade module 1 is composed of blades and corresponding racks, that is, the blade module 1 includes high-speed and low-speed types. The high-speed type is composed of high-speed blades 11 and high-speed blade racks, and the low-speed type is composed of low-speed blades 12 and low-speed blade racks.

[0037] The data collector 3 is connected to the industrial computer 200 by a data line or a wireless connection. The data collector 3 collects the operation data of the test bench 100 and transmits it to the industrial computer 200.

[0038] The bearing seat 6 is provided with a blade tip timing sensor 8 and an acceleration sensor.

[0039] The blade tip timing sensor 8 is arranged on the high-speed blade 11. The blade tip timing sensor 8 is arranged on the blade surface of the high-speed blade 11 and is connected to the data collector 3 by signal; the blade tip timing sensor 8 can obtain the vibration change data of the high-speed blade 11 in the running state;

[0040] The acceleration sensor is arranged on the low-speed blade 12. The acceleration sensor is arranged on the blade surface of the low-speed blade 12 and is connected to the data collector 3 for signal. The acceleration sensor can obtain the vibration change data of the low-speed blade 12 when it is in operation.

[0041] The bearing seat 6 is provided with a temperature sensor 7 corresponding to the blade module 1; the temperature sensor 7 is connected to the data collector 3 by signal, and the temperature sensor 7 can obtain the temperature change data of the blade module 1 when it is working.

[0042] A method for operating a high and low speed integrated blade predictive maintenance test bed, the steps are as follows:

[0043] A. Installation and debugging of the high-speed blade 11: Install the high-speed blade 11 on the test bench 100 and connect it to the gear box 2; install and debug the blade tip timing sensor 8 and the temperature sensor 7;

[0044] B. Data collection of high-speed blades 11: start the drive motor 4, drive the high-speed blades 11 to rotate through the gear box 2, and the blade tip timing sensor 8 and the temperature sensor 7 record and transmit the operating data of the high-speed blades 11;

[0045] C. Installation and debugging of the low-speed blade 12: After the high-speed blade 11 has finished running, the drive motor 4 is turned off, the high-speed blade 11 is removed from the test bench 100, and the low-speed blade 12 is installed;

[0046] D. Adjust the speed ratio of gear box 2;

[0047] E. Data collection of low-speed blades 12: start the drive motor 4, drive the low-speed blades 12 to rotate through the gear box 2, and the acceleration sensor and temperature sensor 7 record and transmit the operating data of the low-speed blades 12;

[0048] F. Complete the test.

[0049] The specific contents of recording and transmitting the operation data as described in step B and step E are as follows: the blade tip timing sensor 8 and the temperature sensor 7 record the operation data and transmit it to the data collector 3, the data collector 3 analyzes the operation data and transmits it to the industrial computer 200, and finally the industrial computer 200 performs predictive maintenance through the established fault diagnosis model and life prediction model.

[0050] Working principle of the present invention:

[0051] First, prepare the detachable high-speed blades 11 and low-speed blades 12, and combine the test bed of the present invention with the high-speed blades 11 and the low-speed blades 12 respectively, then test the operating conditions of the high-speed blades 11 and the low-speed blades 12 respectively to obtain the operating data of the high-speed blades 11 and the low-speed blades 12; input the operating data into the fault diagnosis model and life prediction model that have been established in the industrial computer 200, so as to predict the operating conditions of the high-speed blades 11 and the low-speed blades 12, and take targeted repair and maintenance plans according to the prediction results.

Claims

1. A high and low speed integrated blade predictive maintenance test bed, characterized by: The invention comprises a test bench (100), an industrial computer (200) and a display (300); the industrial computer (200) is respectively connected to the test bench (100) and the display (300) by signals; the test bench (100) comprises a base plate (5), a bearing seat (6), a blade module (1), a gear box (2), a drive motor (4) and a data acquisition device (3); the blade module (1), the gear box (2) and the drive motor (4) are connected in sequence from left to right via a main shaft (9) and are vertically arranged on the bearing seat (6); the blade module (1) is detachably rotatably connected to the gear box (2) via a coupling; the blade module (1) is composed of blades and corresponding racks, including two types, high speed and low speed, that is, the high speed blade module (1) is composed of a high speed blade (11) and a high speed blade rack, and the low speed blade module (1) is composed of a low speed blade (12) and a low speed blade rack; the gear box (2) is a multi-stage gear box that meets different speed ratios; The bearing seat (6) is provided with a blade tip timing sensor (8) and an acceleration sensor; the blade tip timing sensor (8) is provided on the high-speed blade (11), the blade tip timing sensor (8) is provided on the blade surface of the high-speed blade (11) and is signal-connected to the data collector (3); the blade tip timing sensor (8) can obtain vibration change data of the high-speed blade (11) when it is in operation; The acceleration sensor is arranged on the low-speed blade (12); the acceleration sensor is arranged on the blade surface of the low-speed blade (12) and is signal-connected to the data collector (3); the acceleration sensor can obtain vibration change data of the low-speed blade (12) when it is in operation.

2. The high and low speed integrated blade predictive maintenance test bed according to claim 1, characterized in that: The bearing seat (6) is provided with a temperature sensor (7) corresponding to the blade module (1); the temperature sensor (7) is signal-connected to the data collector (3), and the temperature sensor (7) can obtain temperature change data of the blade module (1) when it is working.

3. The high and low speed integrated blade predictive maintenance test bed according to claim 2, characterized in that: The data collector (3) is signal-connected to the industrial control computer (200); the data collector (3) collects the operating data of the test bench (100) and transmits the data to the industrial control computer (200).

4. The method for operating a high and low speed integrated blade predictive maintenance test bed according to any one of claims 1 to 3, characterized in that: Here are the steps: A. Installation and debugging of the high-speed blade (11): installing the high-speed blade (11) on the test bench (100) and connecting it to the gear box (2); installing and debugging the blade tip timing sensor (8) and the temperature sensor (7); B. Data collection of high-speed blades (11): starting the drive motor (4), driving the high-speed blades (11) to rotate via the gear box (2), and the blade tip timing sensor (8) and the temperature sensor (7) record and transmit the operating data of the high-speed blades (11); C. Installation and debugging of the low-speed blade (12): After the high-speed blade (11) has finished running, the drive motor (4) is turned off, the high-speed blade (11) is removed from the test bench (100), and the low-speed blade (12) is installed; D. Adjust the speed ratio of the gearbox (2); E. Data collection of the low-speed blade (12): starting the driving motor (4), driving the low-speed blade (12) to rotate via the gear box (2), and the acceleration sensor and the temperature sensor (7) record and transmit the operating data of the low-speed blade (12); F. Complete the test.

5. The method for operating a high and low speed integrated blade predictive maintenance test bed according to claim 4, characterized in that: The specific contents of recording and transmitting the operating data described in step B and step E are as follows: the blade tip timing sensor (8) and the temperature sensor (7) record the operating data and transmit it to the data collector (3); the data collector (3) analyzes the operating data and transmits it to the industrial computer (200); finally, the industrial computer (200) performs predictive maintenance through the established fault diagnosis model and life prediction model.

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