A vibration test system for gas turbine impeller production

Abstract

The invention discloses a vibration test system for gas turbine turbine impeller production, relates to the technical field of production testing, and is used to solve the problem that the impeller vibration test on the existing production line is often also a dynamic vibration test on the impeller, which is not only inefficient, but also the direction of the vibration test is not comprehensive enough, and the data of the batch impeller vibration test cannot be captured, and the production improvement of the impeller has no effect. The invention comprises an acquisition module, an analysis module, a recording module, a verification module and an emergency module; the acquisition module is used for performing vibration testing and information collection on the impeller after completion of production; the invention can perform static and dynamic vibration tests on the impeller after production, and convert the collected vibration signals into digital signals for abnormality analysis, so as to more accurately evaluate the quality of the impeller and improve production efficiency and product quality.

Description

Technical Field

[0001] The invention relates to the technical field of production testing, and in particular to a vibration testing system for production of a turbine impeller of a combustion engine. Background Art

[0002] A gas turbine impeller is an important component used in a gas turbine or turbine. It is usually made of metal and has a specific blade shape and structure. The gas turbine impeller rotates at high speed to turn the entire turbine, thereby generating power. In the fields of aviation, energy, etc., gas turbine impellers are widely used in jet engines, steam turbines and other equipment.

[0003] The design and manufacturing of gas turbine impellers are extremely important, and their quality and performance directly affect the operating efficiency, safety and reliability of the entire turbine. Usually, gas turbine impellers need to undergo strict vibration testing, dynamic balancing and other process controls to ensure that they will not vibrate excessively or become unbalanced when rotating at high speeds, thus affecting the normal operation of the equipment.

[0004] Therefore, vibration testing of gas turbine impellers is a very important process. Through vibration testing, we can fully understand the vibration generated by the impeller when it rotates at high speed, detect whether there is abnormal vibration, diagnose and deal with it in time, and ensure the stability and safety of the impeller during operation. At the same time, vibration testing also helps to optimize the design and manufacturing process of the impeller, improve its performance and life, and meet the requirements of different engineering needs.

[0005] However, in the prior art, vibration tests on gas turbine impellers are mostly performed after installation in the gas turbine turbine. Once abnormal disassembly and assembly occurs, the time is too long. The impeller vibration test on the production line is often a dynamic vibration test of the impeller. Not only is the efficiency slow, but the direction of the vibration test is not comprehensive enough, and the data of batch impeller vibration tests cannot be captured, which has no effect on the production improvement of the impeller. Therefore, a vibration testing system for gas turbine turbine impeller production is designed.

[0006] In order to solve the above defects, a technical solution is now provided. Summary of the invention

[0007] The purpose of the present invention is to solve the problem that the impeller vibration test on the existing production line is often a dynamic vibration test of the impeller, which is not only inefficient, but also the direction of the vibration test is not comprehensive enough and cannot capture the data of batch impeller vibration tests, and has no effect on the production improvement of the impeller. A vibration testing system for gas turbine turbine impeller production is proposed.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] A vibration test system for production of a gas turbine impeller, comprising:

[0010] The acquisition module is used to perform vibration testing and information collection on the impeller after production;

[0011] An analysis module is used to analyze the digital signal of the impeller vibration test and determine the impeller with abnormal vibration;

[0012] A recording module is used to record the impeller with abnormal vibration test;

[0013] The impellers on the conveyor belt are numbered and the impeller numbers with abnormal vibration tests are recorded. When the impeller is judged to have abnormal static vibration test, it is recorded as a, and when the impeller is judged to have abnormal dynamic vibration test, it is recorded as b. A set of codes is established for the impellers with abnormal vibrations by combining the impeller numbers and the time of detecting abnormal vibrations.

[0014] All impeller codes with abnormalities are sorted according to timestamps, and when it is searched whether there are abnormal codes exceeding the preset number in the preset time period, a and b in the abnormal codes are verified. If both a and b exist in the abnormal codes in the time period, it is determined that the vibration test equipment is abnormal, and a verification signal is generated;

[0015] When the above abnormalities do not exist, all vibration test results of the impellers in this batch are recorded, the number of impellers with vibration test abnormalities in this batch is analyzed, the proportion of impellers with vibration abnormalities in this batch is analyzed, and compared with the preset conventional defective rate threshold. When the proportion of impellers with vibration abnormalities in this batch is greater than the preset conventional defective rate threshold, a warning prompt is sent to the production workshop, and the impeller production workshop analyzes which process of the impeller batch has problems and makes real-time improvements;

[0016] A verification module, used to verify abnormal vibration test equipment;

[0017] After receiving the verification signal, the vibration test equipment is checked for abnormalities. The amplitude difference, frequency difference, noise difference, abnormal wave time and non-unity value are obtained by collecting the equipment amplitude, frequency, noise, stability and data collection accuracy, and are calibrated as zf, pc, zc, ys and fy respectively. After normalization, they are entered into the following formula: To obtain the abnormal test value YJZ;

[0018] The calculated abnormal detection value is then compared with the preset abnormal detection threshold. When the abnormal detection value is greater than the preset abnormal detection threshold, the vibration test equipment is judged to be abnormal and a response signal is generated;

[0019] The emergency module is used to handle emergency situations of vibration test equipment.

[0020] Furthermore, the steps of the acquisition module performing vibration testing and information acquisition on the impeller after production are as follows:

[0021] Install the finished impellers on the test fixture, and transfer the test fixture and impellers in batches via a conveyor belt. A test area is established above the conveyor belt. The test area includes two sets of vibration test equipment, one for vibration testing the impellers on the conveyor belt, and the other for backup;

[0022] The vibration test equipment includes a bracket, an exciter and a sensor. The bracket is used to support the entire equipment. The exciter is used to excite the impeller. The exciter includes a laser exciter and an electromagnetic exciter. The laser exciter is used to excite a small amplitude, and the electromagnetic exciter is used to excite a large amplitude. Static vibration test is performed. After the static vibration test is completed, the impeller is driven to rotate by the test fixture to perform dynamic vibration test. The sensor is used to be installed on the impeller to be tested to collect the vibration signal of the impeller, and then the collected vibration signal is converted into a digital signal, and the digital signal is filtered and amplified.

[0023] Furthermore, the specific operation steps of the analysis module for analyzing the digital signal of the impeller vibration test are as follows:

[0024] The converted digital signals are analyzed by three analysis methods: time domain analysis, spectrum analysis and statistical analysis to analyze the digital signals of static and dynamic vibration of the impeller to determine whether there is any abnormality;

[0025] The time domain analysis understands the stability and periodicity of the signal by analyzing the waveform changes of the digital signal on the time axis. The time domain analysis includes analyzing the amplitude, frequency and phase characteristics of the vibration signal. The spectrum analysis converts the signal into the frequency domain to obtain the spectrum diagram of the signal, thereby analyzing the frequency components of the impeller vibration. Abnormal vibration usually shows a specific frequency component or frequency range on the spectrum diagram, including harmonics and resonant frequencies. The statistical analysis evaluates the stability and changes of the impeller vibration by analyzing the statistical characteristics of the vibration signal, including the mean, standard deviation and root mean square value.

[0026] According to the above three methods, key characteristic parameters are screened as indicators, including the main frequency components in the spectrum, the peak value of the time domain waveform and the root mean square value in the statistical analysis. For each key characteristic parameter, a normal range or threshold is set. When the indicator is not in the normal range or exceeds the threshold, the static or dynamic vibration test of the impeller is judged to be abnormal.

[0027] Furthermore, the verification module analyzes the amplitude difference, frequency difference, noise difference, abnormal wave time and non-unity value obtained by collecting the equipment amplitude, frequency, noise, stability and data collection accuracy. The specific operation steps are as follows:

[0028] Amplitude is an important parameter of the vibration exciter. By setting a standard amplitude value, the actual vibration amplitude is measured by a sensor, and then compared with the standard amplitude, the amplitude difference is calculated, and this amplitude difference is used as the amplitude standard for measuring the equipment.

[0029] The frequency is measured by setting a standard frequency value, then comparing the actual vibration frequency with the standard frequency to obtain the difference between the actual frequency and the standard frequency, which is recorded as the frequency difference value and used as the standard for measuring frequency.

[0030] Noise is tested by using noise measuring instruments, recording the noise level of the vibration test equipment under different working conditions and comparing it with the noise reference standards of the equipment under different working conditions, so as to obtain the noise difference under different working conditions, and average the noise difference under different working conditions to obtain the noise difference value, which is used as the standard for measuring noise parameters;

[0031] Stability: By recording the vibration of the vibration test equipment in different time periods and under different working conditions, observe whether the vibration is stable, and record the time of abnormal fluctuations, which is recorded as abnormal wave time. This abnormal wave time is used as a standard to measure the stability of the equipment;

[0032] Data accuracy is achieved by using backup sensors to compare signals collected at different time points with those collected by existing sensors, checking data consistency, and setting a reasonable difference range. When the difference in signals collected by the two sensors exceeds the reasonable difference range, it is judged as an abnormality, and the total number of abnormalities is recorded as a non-unity value. This non-unity value is used as a standard to measure the accuracy of equipment data.

[0033] Furthermore, the specific operation steps of the emergency module for emergency treatment of abnormalities of the vibration test equipment are as follows:

[0034] When a response signal is received, it is determined that the vibration test equipment is abnormal, and the impeller tested after the vibration test equipment is abnormal is retested, and the spare equipment in the vibration test equipment is enabled for a second test to avoid inaccurate impeller vibration test results due to abnormal vibration test equipment;

[0035] At the same time, an emergency maintenance signal is sent to the surrounding maintenance teams, and a search area is established with the abnormal vibration test equipment as the center and the preset distance as the radius, and the maintenance team terminal is searched in the search area. When there is no maintenance team terminal in the search area established with the preset distance as the radius or the number of maintenance team terminals is less than the preset number, the preset distance is gradually expanded until the number of maintenance team terminals in the established search area reaches or exceeds the preset number;

[0036] Then, the most suitable maintenance team is selected from the maintenance team terminals in the search area according to the priority, and the maintenance task is sent to its terminal.

[0037] Furthermore, the specific operation steps of the emergency module to select the most suitable maintenance team from the maintenance team terminals in the search area according to the priority are as follows:

[0038] The priority of the maintenance team is determined by comprehensively evaluating the maintenance team's average response time, average maintenance time, maintenance cost, completion rate and customer evaluation. The average response time is calculated from the maintenance team's historical records, from the time the maintenance team receives the maintenance task to the time it sets out to the maintenance point, and the average of all maintenance tasks is calculated to get the average response time. The average maintenance time is the average time required for the maintenance team to complete each maintenance task. The maintenance cost is the sum of the labor costs, parts replacement costs and other costs incurred by the maintenance team for each maintenance, divided by the number of maintenance tasks completed, to get the average maintenance cost. The completion rate is the number of successful maintenance tasks of the maintenance team divided by the total number of maintenance tasks. The customer evaluation is the evaluation of 1-10 points given by the customer after each maintenance is completed by the maintenance team, and the average is calculated to get the average score, which is used as the standard for measuring customer evaluation.

[0039] The average response time, average maintenance time, average maintenance cost, completion rate and average score are calibrated as PX, PW, WC, WL and PF respectively, and then normalized and entered into the following formula: To obtain the superior value YJZ, They are the preset weight coefficients for average response time, average maintenance time, average maintenance cost, completion rate and average score;

[0040] Then sort the priority values ​​calculated by all maintenance teams according to size, and send the maintenance task to the terminal corresponding to the maintenance team with the largest priority value. At the same time, obtain the distance between the maintenance team and the maintenance area, plan the corresponding route and arrival time for the maintenance team, and wait for the maintenance team to maintain the abnormal vibration test equipment.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] The present invention can perform static and dynamic vibration tests on the impeller after production, and convert the collected vibration signals into digital signals for abnormality analysis, so as to more accurately evaluate the quality of the impeller and improve production efficiency and product quality.

[0043] The present invention can quickly discover the situation where the proportion of abnormal impellers in batch impeller vibration test is too high and issue a timely warning to the production workshop to avoid causing greater losses;

[0044] The present invention can not only identify the abnormality of the vibration test equipment in the first time, but also enable the spare vibration test equipment without affecting the production test efficiency. It can also issue maintenance tasks in time after screening the surrounding maintenance teams, thereby improving the efficiency of equipment maintenance, and better maintenance teams can be screened out by prioritizing the surrounding maintenance teams. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings;

[0046] Figure 1 This is the overall system block diagram of the present invention. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] It should be understood that the terms "include" and "comprising" used in the specification and claims of the present disclosure indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0049] It should also be understood that the terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used in this disclosure and claims, the singular forms of "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in this disclosure and claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0050] like Figure 1 As shown, a vibration test system for gas turbine impeller production includes a collection module, an analysis module, a recording module, a verification module and an emergency module;

[0051] The acquisition module is used to perform vibration testing and information collection on the impeller after production;

[0052] Install the finished impellers on the test fixture, and transfer the test fixture and impellers in batches via a conveyor belt. A test area is established above the conveyor belt. The test area includes two sets of vibration test equipment, one for vibration testing the impellers on the conveyor belt, and the other for backup;

[0053] The vibration test equipment includes a bracket, an exciter and a sensor. The bracket is used to support the entire equipment. The exciter is used to excite the impeller. The exciter includes a laser exciter and an electromagnetic exciter. The laser exciter is used to excite a small amplitude, and the electromagnetic exciter is used to excite a large amplitude. Static vibration test is performed. After the static vibration test is completed, the impeller is driven to rotate by the test fixture to perform dynamic vibration test. The sensor is used to be installed on the impeller to be tested to collect the vibration signal of the impeller, and then the collected vibration signal is converted into a digital signal, and the digital signal is filtered and amplified.

[0054] The analysis module is used to analyze the digital signal of the impeller vibration test and determine the impeller with abnormal vibration;

[0055] The converted digital signals are analyzed by three analysis methods: time domain analysis, spectrum analysis and statistical analysis to analyze the digital signals of static and dynamic vibration of the impeller to determine whether there is any abnormality;

[0056] The time domain analysis understands the stability and periodicity of the signal by analyzing the waveform changes of the digital signal on the time axis. The time domain analysis includes analyzing the amplitude, frequency and phase characteristics of the vibration signal. The spectrum analysis converts the signal into the frequency domain to obtain the spectrum diagram of the signal, thereby analyzing the frequency components of the impeller vibration. Abnormal vibration usually shows a specific frequency component or frequency range on the spectrum diagram, including harmonics and resonant frequencies. The statistical analysis evaluates the stability and changes of the impeller vibration by analyzing the statistical characteristics of the vibration signal, including the mean, standard deviation and root mean square value.

[0057] According to the above three methods, key characteristic parameters are screened as indicators, including the main frequency components in the spectrum, the peak value of the time domain waveform and the root mean square value in the statistical analysis. For each key characteristic parameter, a normal range or threshold is set. When the indicator is not in the normal range or exceeds the threshold, the static or dynamic vibration test of the impeller is judged to be abnormal.

[0058] The recording module is used to record the impeller with abnormal vibration test;

[0059] The impellers on the conveyor belt are numbered and the impeller numbers with abnormal vibration tests are recorded. When the impeller is judged to have abnormal static vibration test, it is recorded as a, and when the impeller is judged to have abnormal dynamic vibration test, it is recorded as b. A set of codes is established for the impellers with abnormal vibrations by combining the impeller numbers and the time of detecting abnormal vibrations.

[0060] All impeller codes with abnormalities are sorted according to timestamps, and when it is searched whether there are abnormal codes exceeding the preset number in the preset time period, a and b in the abnormal codes are verified. If both a and b exist in the abnormal codes in the time period, it is determined that the vibration test equipment is abnormal, and a verification signal is generated;

[0061] When the above abnormalities do not exist, all vibration test results of the impellers in this batch are recorded, the number of impellers with vibration test abnormalities in this batch is analyzed, the proportion of impellers with vibration abnormalities in this batch is analyzed, and compared with the preset conventional defective rate threshold. When the proportion of impellers with vibration abnormalities in this batch is greater than the preset conventional defective rate threshold, a warning prompt is sent to the production workshop, and the impeller production workshop analyzes which process of this batch of impellers has problems and makes real-time improvements to avoid greater losses.

[0062] The verification module is used to verify abnormal vibration test equipment;

[0063] After receiving the verification signal, the vibration test equipment is checked for abnormalities, and the equipment amplitude, frequency, noise, stability and data collection accuracy are collected for analysis and judgment; the amplitude is an important parameter for the exciter. A standard amplitude value is set, and then the actual vibration amplitude is measured by the sensor, and compared with the standard amplitude, the amplitude difference is calculated, and this amplitude difference is used as the amplitude standard for measuring the equipment;

[0064] The frequency is measured by setting a standard frequency value, then comparing the actual vibration frequency with the standard frequency to obtain the difference between the actual frequency and the standard frequency, which is recorded as the frequency difference value and used as the standard for measuring frequency.

[0065] Noise is tested by using noise measuring instruments, recording the noise level of the vibration test equipment under different working conditions and comparing it with the noise reference standards of the equipment under different working conditions, so as to obtain the noise difference under different working conditions, and average the noise difference under different working conditions to obtain the noise difference value, which is used as the standard for measuring noise parameters;

[0066] Stability: By recording the vibration of the vibration test equipment in different time periods and under different working conditions, observe whether the vibration is stable, and record the time of abnormal fluctuations, which is recorded as abnormal wave time. This abnormal wave time is used as a standard to measure the stability of the equipment;

[0067] Data accuracy is achieved by using a backup sensor to compare the signals collected at different time points with those collected by the existing sensor, checking the consistency of the data and setting a reasonable difference range. When the difference in the signals collected by the two sensors exceeds the reasonable difference range, it is judged as abnormal, and the total number of abnormalities is recorded as a non-unity value, which is used as a standard to measure the accuracy of equipment data;

[0068] The amplitude difference, frequency difference, noise difference, abnormal wave time and non-unity value obtained above are calibrated as zf, pc, zc, ys and fy respectively, and after normalization, they are entered into the following formula: To obtain the abnormal test value YJZ;

[0069] The calculated abnormal detection value YJZ is then compared with the preset abnormal detection threshold. When the abnormal detection value YJZ is greater than the preset abnormal detection threshold, the vibration test equipment is judged to be abnormal and a response signal is generated.

[0070] The emergency module is used to handle emergency situations of vibration test equipment;

[0071] When a response signal is received, it is determined that the vibration test equipment is abnormal, and the impeller tested after the vibration test equipment is abnormal is retested, and the spare equipment in the vibration test equipment is enabled for a second test to avoid inaccurate impeller vibration test results due to abnormal vibration test equipment;

[0072] At the same time, an emergency maintenance signal is sent to the surrounding maintenance teams, and a search area is established with the abnormal vibration test equipment as the center and the preset distance as the radius, and the maintenance team terminal is searched in the search area. When there is no maintenance team terminal in the search area established with the preset distance as the radius or the number of maintenance team terminals is less than the preset number, the preset distance is gradually expanded until the number of maintenance team terminals in the established search area reaches or exceeds the preset number;

[0073] Then, the most suitable maintenance team is selected from the maintenance team terminals in the search area according to the priority, and the maintenance task is sent to the terminal. The specific selection steps are as follows:

[0074] The priority of the maintenance team is determined by comprehensively evaluating the maintenance team's average response time, average maintenance time, maintenance cost, completion rate and customer evaluation. The average response time is calculated from the maintenance team's historical records, from the time the maintenance team receives the maintenance task to the time it sets out to the maintenance point, and the average of all maintenance tasks is calculated to get the average response time. The average maintenance time is the average time required for the maintenance team to complete each maintenance task. The maintenance cost is the sum of the labor costs, parts replacement costs and other costs incurred by the maintenance team for each maintenance, divided by the number of maintenance tasks completed, to get the average maintenance cost. The completion rate is the number of successful maintenance tasks of the maintenance team divided by the total number of maintenance tasks. The customer evaluation is the evaluation of 1-10 points given by the customer after each maintenance is completed by the maintenance team, and the average is calculated to get the average score, which is used as the standard for measuring customer evaluation.

[0075] The average response time, average maintenance time, average maintenance cost, completion rate and average score are calibrated as PX, PW, WC, WL and PF respectively, and then normalized and entered into the following formula: To obtain the superior value YJZ, They are the preset weight coefficients of average response time, average maintenance time, average maintenance cost, completion rate and average score, and their values ​​are: 0.993, 1.024, 0.982, 1.113 and 1.236 respectively;

[0076] Then sort the priority values ​​calculated by all maintenance teams according to size, and send the maintenance task to the terminal corresponding to the maintenance team with the largest priority value. At the same time, obtain the distance between the maintenance team and the maintenance area, plan the corresponding route and arrival time for the maintenance team, and wait for the maintenance team to maintain the abnormal vibration test equipment.

[0077] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A vibration test system for gas turbine impeller production, characterized in that: include: The acquisition module is used to perform vibration testing and information collection on the impeller after production; An analysis module is used to analyze the digital signal of the impeller vibration test and determine the impeller with abnormal vibration; A recording module is used to record the impeller with abnormal vibration test; The impellers on the conveyor belt are numbered and the impeller numbers with abnormal vibration tests are recorded. When the impeller is judged to have abnormal static vibration test, it is recorded as a, and when the impeller is judged to have abnormal dynamic vibration test, it is recorded as b. A set of codes is established for the impellers with abnormal vibrations by combining the impeller numbers and the time of detecting abnormal vibrations. All impeller codes with abnormalities are sorted according to timestamps, and it is searched whether there are abnormal codes exceeding the preset number in the preset time period. If so, a and b in the abnormal code are verified. If both a and b exist in the abnormal code in the time period, it is determined that the vibration test equipment is abnormal, and a verification signal is generated; When the above abnormalities do not exist, all vibration test results of the impellers in this batch are recorded, the number of impellers in this batch with vibration test abnormalities is obtained, the proportion of impellers with vibration abnormalities in this batch is analyzed, and compared with the preset conventional defective rate threshold. When the proportion of impellers with vibration abnormalities in this batch is greater than the preset conventional defective rate threshold, a warning prompt is sent to the production workshop, and the impeller production workshop analyzes which process of the impeller batch has problems and makes real-time improvements; A verification module, used to verify abnormal vibration test equipment; After receiving the verification signal, the vibration test equipment is checked for abnormalities. The amplitude difference, frequency difference, noise difference, abnormal wave time and non-unity value are obtained by collecting the equipment amplitude, frequency, noise, stability and data collection accuracy, and are calibrated as zf, pc, zc, ys and fy respectively. After normalization, they are entered into the following formula: To obtain the abnormal detection value YJZ; stability is measured by recording the vibration conditions of the vibration test equipment in different time periods and different working conditions, observing whether the vibration is stable, and recording the time of abnormal fluctuations, recorded as abnormal wave time, and using this abnormal wave time as a standard for measuring the stability of the equipment; data collection accuracy is measured by using a backup sensor to compare the signals collected at different time points with the existing sensors, checking the consistency of the data, setting a reasonable difference range, and when the difference in the signals collected by the two sensors exceeds the reasonable difference range, it is judged as abnormal, and the total number of abnormalities is recorded, recorded as a non-unity value, and this non-unity value is used as a standard for measuring the accuracy of equipment data; The calculated abnormal detection value is then compared with the preset abnormal detection threshold. When the abnormal detection value is greater than the preset abnormal detection threshold, the vibration test equipment is judged to be abnormal and a response signal is generated; The emergency module is used to handle emergency situations of vibration test equipment.

2. A vibration test system for gas turbine impeller production according to claim 1, characterized in that: The steps of the acquisition module for vibration testing and information collection of the impeller after production are as follows: Install the finished impellers on the test fixture, and transfer the test fixture and impellers in batches via a conveyor belt. A test area is established above the conveyor belt. The test area includes two sets of vibration test equipment, one for vibration testing the impellers on the conveyor belt, and the other for backup; The vibration test equipment includes a bracket, an exciter and a sensor. The bracket is used to support the entire equipment. The exciter is used to excite the impeller. The exciter includes a laser exciter and an electromagnetic exciter. The laser exciter is used to excite a small amplitude, and the electromagnetic exciter is used to excite a large amplitude. Static vibration test is performed. After the static vibration test is completed, the impeller is driven to rotate by the test fixture to perform dynamic vibration test. The sensor is used to be installed on the impeller to be tested to collect the vibration signal of the impeller, and then the collected vibration signal is converted into a digital signal, and the digital signal is filtered and amplified.

3. A vibration test system for gas turbine impeller production according to claim 1, characterized in that: The specific operation steps of the analysis module for analyzing the digital signal of the impeller vibration test are as follows: The converted digital signals are analyzed by three analysis methods: time domain analysis, spectrum analysis and statistical analysis to analyze the digital signals of static and dynamic vibration of the impeller to determine whether there is any abnormality; The time domain analysis understands the stability and periodicity of the signal by analyzing the waveform changes of the digital signal on the time axis. The time domain analysis includes analyzing the amplitude, frequency and phase characteristics of the vibration signal. The spectrum analysis converts the signal into the frequency domain to obtain the spectrum diagram of the signal, thereby analyzing the frequency components of the impeller vibration. Abnormal vibration usually shows a specific frequency component or frequency range on the spectrum diagram, including harmonics and resonant frequencies. The statistical analysis evaluates the stability and changes of the impeller vibration by analyzing the statistical characteristics of the vibration signal, including the mean, standard deviation and root mean square value. According to the above three methods, key characteristic parameters are screened as indicators, including the main frequency components in the spectrum, the peak value of the time domain waveform and the root mean square value in the statistical analysis. For each key characteristic parameter, a normal range or threshold is set. When the indicator is not in the normal range or exceeds the threshold, the static or dynamic vibration test of the impeller is judged to be abnormal.

4. A vibration test system for gas turbine impeller production according to claim 1, characterized in that: The verification module collects the equipment amplitude, frequency, noise, stability and data acquisition accuracy to analyze the amplitude difference, frequency difference, noise difference, abnormal wave time and non-uniform value. The specific operation steps are as follows: Amplitude is an important parameter of the vibration exciter. By setting a standard amplitude value, the actual vibration amplitude is measured by a sensor, and then compared with the standard amplitude, the amplitude difference is calculated, and this amplitude difference is used as the amplitude standard for measuring the equipment. The frequency is measured by setting a standard frequency value, then comparing the actual vibration frequency with the standard frequency to obtain the difference between the actual frequency and the standard frequency, which is recorded as the frequency difference value and used as the standard for measuring frequency. Noise is tested by using noise measuring instruments. The noise levels of the vibration test equipment under different working conditions are recorded and compared with the noise reference standards of the equipment under different working conditions to obtain the noise differences under different working conditions. The noise differences under different working conditions are averaged to obtain the noise difference value, and this noise difference value is used as the standard for measuring noise parameters.

5. A vibration test system for gas turbine impeller production according to claim 1, characterized in that: The specific operation steps of the emergency module for emergency treatment of abnormalities of the vibration test equipment are as follows: When a response signal is received, it is determined that the vibration test equipment is abnormal, and the impeller tested after the vibration test equipment is abnormal is retested, and the spare equipment in the vibration test equipment is enabled for a second test to avoid inaccurate impeller vibration test results due to abnormal vibration test equipment; At the same time, an emergency maintenance signal is sent to the surrounding maintenance teams, and a search area is established with the abnormal vibration test equipment as the center and the preset distance as the radius, and the maintenance team terminal is searched in the search area. When there is no maintenance team terminal in the search area established with the preset distance as the radius or the number of maintenance team terminals is less than the preset number, the preset distance is gradually expanded until the number of maintenance team terminals in the established search area reaches or exceeds the preset number; Then, the most suitable maintenance team is selected from the maintenance team terminals in the search area according to the priority, and the maintenance task is sent to its terminal.

6. A vibration test system for gas turbine impeller production according to claim 5, characterized in that: The specific operation steps of the emergency module to select the most suitable maintenance team from the maintenance team terminals in the search area according to the priority are as follows: Determine the priority of the maintenance team by comprehensively evaluating the average response time, average maintenance time, maintenance cost, completion rate and customer evaluation of the maintenance team; The average response time is calculated by the historical records of the maintenance team, from the time the maintenance team receives the maintenance task to the time they set out to the maintenance point, and the average of all maintenance tasks is calculated to obtain the average response time; The average maintenance time is the average time required by the maintenance team to complete a maintenance task each time; the maintenance cost is the sum of the labor costs, parts replacement costs and other costs incurred by the maintenance team for each maintenance, divided by the number of maintenance tasks completed, to obtain the average maintenance cost; the completion rate is the number of successful maintenance tasks performed by the maintenance team divided by the total number of maintenance tasks; the customer evaluation is the evaluation of 1-10 points given by the customer after each maintenance completed by the maintenance team, and the average is calculated to obtain the average score, which is used as the standard for measuring customer evaluation; The average response time, average maintenance time, average maintenance cost, completion rate and average score are calibrated as PX, PW, WC, WL and PF respectively, and then normalized and entered into the following formula: To obtain the optimal value yjz, They are the preset weight coefficients for average response time, average maintenance time, average maintenance cost, completion rate and average score; Then sort the priority values ​​calculated by all maintenance teams according to size, and send the maintenance task to the terminal corresponding to the maintenance team with the largest priority value. At the same time, obtain the distance between the maintenance team and the maintenance area, plan the corresponding route and arrival time for the maintenance team, and wait for the maintenance team to maintain the abnormal vibration test equipment.

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