A method for regulating an IGV of a marine-derived gas turbine

Abstract

An IGV adjusting method for a modified gas turbine belongs to the technical field of IGV adjusting, which is characterized by the following steps: when the modified gas turbine is working, the IGV opening of the modified gas turbine is analyzed to obtain an alarm quantity; if the IGV opening of the modified gas turbine exceeds the defined IGV opening for several times, the duration time, interval time and abnormal amplitude of the exceeding condition are analyzed to alarm the modified gas turbine. The method is suitable for improving the working performance of the modified gas turbine, avoiding failure in advance, reducing the working time of the modified gas turbine due to failure, and improving the working efficiency of the modified gas turbine.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of IGV adjustment, and particularly relates to an IGV adjustment method for a marine converted gas turbine. BACKGROUND

[0002] The marine converted gas turbine refers to a gas turbine obtained by modifying an aerojet engine and matching a power turbine, so that the rotating speed and power meet the needs of land power generation or mechanical driving.

[0003] However, in the IGV adjustment of the marine converted gas turbine, the method mentioned in the patent with the publication number CN107035537B is usually used to perform the IGV adjustment of the marine converted gas turbine, that is, the IGV opening degree and the exhaust gas temperature of the gas turbine are adjusted through the gas turbine control loop of the marine converted gas turbine, so as to achieve the adjustment of the warm-up load of the gas turbine of the marine converted gas turbine.

[0004] On the other hand, in order to achieve the adjustment of the warm-up load of the gas turbine of the marine converted gas turbine, the opening degree instrument, the thermocouple and the liquid crystal screen are connected to the controller. The opening degree instrument is used to sample the IGV opening degree of the gas turbine and transmit it to the controller. The thermocouple is used to sample the exhaust gas temperature of the gas turbine and transmit it to the controller. The controller is used to send the collected IGV opening degree and exhaust gas temperature of the gas turbine to the liquid crystal screen for display, so as to achieve the monitoring of the IGV opening degree and exhaust gas temperature of the gas turbine during the adjustment of the warm-up load of the gas turbine. In addition, the working alarm of the marine converted gas turbine can also be achieved according to the IGV opening degree and exhaust gas temperature of the gas turbine by defining an alarm maximum value. Only when the working parameter (IGV opening degree of the gas turbine) of the marine converted gas turbine is the alarm maximum value, the alarm of the marine converted gas turbine can be executed. When the alarm of the marine converted gas turbine is formed, the marine converted gas turbine is often invalid, so that the work of the marine converted gas turbine needs to be stopped for maintenance, and the working performance and working efficiency of the gas turbine are weakened. In addition, the working parameters of the marine converted gas turbine are not analyzed, so that the types of alarms of the marine converted gas turbine are identified, and the working improvement of the marine converted gas turbine is not conducive. SUMMARY

[0005] In order to solve the defects in the prior art, the application provides an IGV adjusting method for a marine converted gas turbine, wherein when the marine converted gas turbine is working, the IGV opening of the marine converted gas turbine is analyzed, an alarm quantity is obtained, and when the IGV opening of the marine converted gas turbine exceeds the defined IGV opening for several times, the duration time, the interval time and the abnormal amplitude of the exceeding condition are analyzed in real time, so that the marine converted gas turbine is alarmed, the working performance of the marine converted gas turbine is improved, the failure is avoided in advance, the working time of the marine converted gas turbine is reduced due to the failure, the working efficiency of the marine converted gas turbine is improved, whether the marine converted gas turbine alarm is caused by the abnormal exhaust gas temperature of the marine converted gas turbine is analyzed by analyzing the change coordination between the exhaust gas temperature and the IGV opening of the marine converted gas turbine, the alarm type is determined, the accurate identification of the marine converted gas turbine working alarm is achieved, the working of the marine converted gas turbine is improved, and if the alarm is not caused by the abnormal exhaust gas temperature of the marine converted gas turbine, efficient exploration is performed on other alarm elements.

[0006] The application uses the following technical scheme.

[0007] An IGV adjusting method for a marine converted gas turbine, comprising:

[0008] The IGV opening and the exhaust gas temperature of the gas turbine are adjusted by the gas turbine control loop of the marine converted gas turbine, the gas turbine warm-up load of the marine converted gas turbine is adjusted, the IGV opening of the gas turbine is sampled by the opening instrument and transmitted to the controller, the exhaust gas temperature of the gas turbine is sampled by the thermocouple and transmitted to the controller, the IGV opening and the exhaust gas temperature of the gas turbine collected by the controller are sent to the liquid crystal screen for display, so that the IGV opening and the exhaust gas temperature of the gas turbine during the gas turbine warm-up load adjustment are monitored;

[0009] After the IGV opening and the exhaust gas temperature of the gas turbine are collected, the controller further comprises:

[0010] S1, the working parameters of the marine converted gas turbine during the working period are detected in real time;

[0011] S2, according to the analysis message, the marine converted gas turbine is detected in real time, and the present value of the analysis message is obtained.

[0012] Further, in S1, the working parameters include the IGV opening of the marine converted gas turbine, the working parameters are compared with the working definition quantity, the treatment message is obtained, wherein the treatment message includes the alarm message, the analysis message and the working message, and the working definition quantity includes the IGV opening limit value defined in advance;

[0013] Furthermore, in S1, the IGV opening degree of the aero-derivative gas turbine is obtained, and it is compared with the IGV opening degree limit value and the IGV opening degree reference range respectively.

[0014] If the IGV opening degree exceeds the IGV opening degree limit and is not within the IGV opening degree reference range, an alarm message will be generated;

[0015] If the IGV opening degree exceeds the IGV opening degree limit but is within the IGV opening degree reference range, a parsing message is generated;

[0016] If the IGV opening does not exceed the IGV opening limit, a working message is generated.

[0017] Furthermore, in S1, the method for obtaining the IGV opening reference range is as follows: obtain the IGV opening predefined before the operation of the aero-derivative gas turbine, that is, the IGV opening limit value, and perform totaling on the root mean square difference between it and the actual value of the IGV opening to obtain the IGV opening reference range. For example, if the IGV opening predefined before the operation of the aero-derivative gas turbine is named KM, and the root mean square difference of its IGV opening ±XD is obtained, then the IGV opening reference range is [KM-XD, KM+XD].

[0018] Furthermore, in S2, the presented value includes the duration, time interval, and excess amplitude. Based on the processing and analysis of the presented value, the alarm value is obtained. The alarm value is compared with the alarm threshold. If the alarm value is not lower than the alarm threshold, an IGV opening alarm message is generated.

[0019] Furthermore, in S2, the frequency of real-time detection and analysis message display and the time taken for the aero-derivative gas turbine to change the IGV opening once are multiplied together to obtain the excess time. The excess time is then divided by the operating time of the aero-derivative gas turbine, and the resulting amount is taken as the period duration and named DY.

[0020] Furthermore, in S2, the frequency of the working messages displayed between the messages is detected and totaled in real time, and multiplied by the time it takes for the aero-modified gas turbine to change the IGV opening once, to obtain the total time for the interval between messages;

[0021] The total frequency of the intervals between parsed messages, which is the frequency of the intervals between parsed messages, is used as the average time interval between parsed messages. The average time interval between parsed messages is then divided by the time of the working period of the aero-derivative gas turbine, and this is used as the time interval quantity, which is named KH.

[0022] Further, in S2, the IGV opening degree of the modified gas turbine when each analysis message appears is acquired instantaneously, and a subtraction process is performed between the IGV opening degree and the IGV opening degree limit value, and the modulus of the quantity obtained by the subtraction is taken as the IGV opening degree reduction of the corresponding analysis message, and the mean of the IGV opening degree reductions of all analysis messages is obtained by performing accumulation on the IGV opening degree reductions of all analysis messages, and the mean is taken as the IGV opening degree reduction mean, and the quantity obtained by dividing the IGV opening degree reduction mean by the IGV opening degree limit value is taken as the exceeding amplitude, and is named as QM.

[0023] Further, in S2, the acquired time extension DY, time interval KH and exceeding amplitude QM are subjected to numerical value processing, and the equation: An alarm value ZK is acquired, where t1, t2 and t3 are all predefined ratio factors.

[0024] Further, in S2, the alarm value ZK and the alarm threshold are subjected to comparison, and the comparison method includes:

[0025] The predefined alarm threshold is Zz;

[0026] If the alarm value ZK is not lower than the alarm threshold Zz, an IGV opening degree alarm message is formed;

[0027] If the alarm value YJ is lower than the alarm threshold, it indicates that the IGV opening degree of the modified gas turbine does not exceed the IGV opening degree limit value for several times and very continuously in the working period, and the IGV opening degree is not close to the boundary of the IGV opening degree reference interval, so that the alarm does not need to be performed, and then the modified gas turbine continues to work, and the instant detection is continuously performed.

[0028] Further, after S2, it further includes:

[0029] S3, according to the IGV opening degree alarm message, the exhaust gas temperature of the modified gas turbine when the IGV opening degree of the modified gas turbine is changed each time in the working period of the modified gas turbine is acquired, the working quantity is acquired according to the processing and analysis on the exhaust gas temperature, and it is determined according to the working quantity whether the alarm type of the modified gas turbine is abnormal exhaust gas temperature of the modified gas turbine.

[0030] Further, in S3, the working period of the modified gas turbine is the time period from the starting time of the working of the modified gas turbine to the time point when the IGV opening degree alarm message is formed;

[0031] The exhaust gas temperature is obtained by sampling the modified gas turbine using a thermocouple when the IGV opening degree of the modified gas turbine is changed each time;

[0032] In the operation period of the modified gas turbine, the exhaust gas temperature of the modified gas turbine in which the IGV opening degree is changed each time when the analysis message appears is obtained, and it is compared with the defined temperature;

[0033] If the exhaust gas temperature of the modified gas turbine in which the IGV opening degree is changed each time is different from the defined temperature, the IGV opening degree in which the exhaust gas temperature is changed each time is registered as the exhaust gas temperature abnormality;

[0034] If the exhaust gas temperature of the modified gas turbine in which the IGV opening degree is changed each time is the same as the defined temperature, the IGV opening degree in which the exhaust gas temperature is changed each time is registered as the exhaust gas temperature normality;

[0035] The frequency of the exhaust gas temperature abnormality is totaled, and the amount obtained by dividing the frequency of the analysis message appearance by the amount is taken as the condition superposition amount one, and it is registered as EZd;

[0036] In the exhaust gas temperature abnormality, the exhaust gas temperature and the IGV opening degree of the modified gas turbine in which the IGV opening degree is changed each time are obtained, and the corresponding comparison with the defined temperature and the IGV opening degree limit value is also performed, and the exhaust gas temperature abnormality is registered according to the comparison condition, which includes:

[0037] If the exhaust gas temperature is higher than the defined temperature and the IGV opening degree is lower than the IGV opening degree limit value, the exhaust gas temperature abnormality is registered as the overall abnormality;

[0038] If the exhaust gas temperature is lower than the defined temperature and the IGV opening degree is higher than the IGV opening degree limit value, the exhaust gas temperature abnormality is registered as the overall abnormality;

[0039] If the exhaust gas temperature is lower than the defined temperature and the IGV opening degree is lower than the emission set distance, the exhaust gas temperature abnormality is registered as the non-overall abnormality;

[0040] If the exhaust gas temperature is higher than the defined temperature and the IGV opening degree is higher than the emission set distance, the exhaust gas temperature abnormality is registered as the non-overall abnormality;

[0041] The frequency of the overall abnormality in the exhaust gas temperature abnormality is totaled, and the amount obtained by dividing the frequency of the exhaust gas temperature abnormality by the frequency of the exhaust gas temperature abnormality is taken as the condition superposition amount two, and it is registered as ESd;

[0042] The deviation of the exhaust gas temperature and the deviation of the IGV opening degree corresponding to the overall abnormality are obtained, and they are respectively marked in the Cartesian system, and the value points of one pair of two adjacent points after marking are connected by a line segment, and the condition change line is obtained;

[0043] Here, the deviation of the exhaust gas temperature is the modulus of the amount obtained by subtracting the defined temperature value from the exhaust gas temperature, and the deviation of the IGV opening is the modulus of the amount obtained by subtracting the IGV opening limit value from the IGV opening;

[0044] Each line segment in the condition variation line is taken as a sub-line;

[0045] The number of sub-lines whose derivative is higher than zero is counted, and the amount obtained by dividing the number by the total number of sub-lines is taken as the orientation coordination amount, and is registered as UC;

[0046] The vertical span size of all sub-lines is measured, and is combined into a span value cluster, the standard deviation of the span value cluster is obtained and is taken as the span deviation presentation amount, and is registered as GD;

[0047] The obtained orientation coordination amount UC and span deviation presentation amount GD are subjected to numerical processing via the equation: The condition superposition amount three ETd is obtained, where χ and θ are both predefined ratio factors;

[0048] The obtained condition superposition amount one EZd, condition superposition amount two ESd and condition superposition amount three ETd are subjected to numerical processing via the equation The action amount ZY is obtained, where β1, β2 and β3 are all predefined ratio factors;

[0049] The action amount and the action threshold amount are subjected to comparison, and the comparison method comprises:

[0050] If the action amount ZY is not lower than the action threshold amount, it indicates that during the operation of the aero-derivative gas turbine, the alarm type of the aero-derivative gas turbine is the abnormal alarm of the exhaust gas temperature of the aero-derivative gas turbine;

[0051] If the action amount ZY is lower than the action threshold amount, it indicates that during the operation of the aero-derivative gas turbine, it is not the exhaust gas temperature of the aero-derivative gas turbine that makes the IGV opening abnormal, and specific inspection is performed on another alarm element.

[0052] An IGV adjusting device for an aero-derivative gas turbine, comprising:

[0053] The opening meter, the thermocouple and the liquid crystal screen are connected to the controller, the opening meter is used to sample the IGV opening of the gas turbine and transmit to the controller, the thermocouple is used to sample the exhaust gas temperature of the gas turbine and transmit to the controller, and the controller is used to send the collected IGV opening and exhaust gas temperature of the gas turbine to the liquid crystal screen for display, so as to achieve monitoring of the IGV opening and exhaust gas temperature of the gas turbine during the warm-up load adjustment of the gas turbine;

[0054] The modules on the controller comprise:

[0055] a detection module for detecting the working parameters of the modified gas turbine during the working period;

[0056] an analysis module for analyzing the messages and then performing real-time detection on the modified gas turbine and obtaining the present value of the analyzed messages;

[0057] a confirmation module for, according to the IGV opening degree alarm message, obtaining the exhaust gas temperature of the modified gas turbine when the IGV opening degree of the modified gas turbine is changed each time during the working period of the modified gas turbine, obtaining the action value according to the treatment analysis performed on the exhaust gas temperature, and determining whether the alarm type of the modified gas turbine is abnormal exhaust gas temperature of the modified gas turbine according to the action value.

[0058] The present application has the advantages that, compared with the prior art, the working parameters of the modified gas turbine during the working period are detected in real time, the working parameters include the IGV opening degree of the modified gas turbine, the working parameters are compared with the working definition parameters to obtain treatment messages, the treatment messages include alarm messages, analysis messages and working messages, the analysis messages are analyzed and then real-time detection is performed on the modified gas turbine, and the present value of the analyzed messages is obtained in real time, the present value includes time duration, time interval and abnormal amplitude, the alarm value is obtained according to the treatment analysis performed on the present value, the alarm value is compared with the alarm threshold, and the IGV opening degree alarm message is formed if the alarm value is not lower than the alarm threshold, the IGV opening degree of the modified gas turbine is analyzed during the working of the modified gas turbine, the alarm value is obtained, the duration time, the interval time and the abnormal amplitude of the abnormal condition are analyzed in real time when the IGV opening degree of the modified gas turbine is changed several times and exceeds the defined IGV opening degree, the alarm of the modified gas turbine is determined according to the above, the working performance of the modified gas turbine is improved, the failure is avoided in advance, the working time of the modified gas turbine is reduced when the failure occurs, the working efficiency of the modified gas turbine is improved, the exhaust gas temperature of the modified gas turbine is obtained when the IGV opening degree of the modified gas turbine is changed each time during the working period of the modified gas turbine according to the IGV opening degree alarm message, the action value is obtained according to the treatment analysis performed on the exhaust gas temperature, and whether the alarm type of the modified gas turbine is abnormal exhaust gas temperature of the modified gas turbine is determined according to the action value, the modified gas turbine alarm caused by the abnormal exhaust gas temperature of the modified gas turbine is analyzed according to the change coordination between the exhaust gas temperature and the IGV opening degree of the modified gas turbine, the alarm type is determined, the accurate confirmation of the working alarm of the modified gas turbine is achieved, the working of the modified gas turbine is improved, and if the alarm is not caused by the abnormal exhaust gas temperature of the modified gas turbine, efficient exploration is performed on other alarm elements. BRIEF DESCRIPTION OF DRAWINGS

[0059] Figure 1 is part of the flow chart of the IGV regulating method of the marine converted gas turbine in the present application;

[0060] Figure 2 is a schematic diagram of the module structure of the IGV regulating device of the marine converted gas turbine in the present application. DETAILED DESCRIPTION

[0061] To make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described below in connection with the drawings in the embodiments of the present application. The embodiments expressed in the present application are only a part of the embodiments of the present application, but not all the embodiments. According to the spirit of the present application, other embodiments obtained by those skilled in the art without making creative efforts are within the protection scope of the present application.

[0062] As shown in Figure 1 , the IGV regulating method of the marine converted gas turbine in the present application comprises:

[0063] The IGV opening degree and the exhaust gas temperature of the gas turbine are regulated via the gas turbine control loop of the marine converted gas turbine, so as to achieve the regulation of the warm-up load of the gas turbine of the marine converted gas turbine. The opening degree instrument samples the IGV opening degree of the gas turbine and transmits it to the controller. The thermocouple samples the exhaust gas temperature of the gas turbine and transmits it to the controller. The controller sends the collected IGV opening degree and exhaust gas temperature of the gas turbine to the liquid crystal screen for display, so as to achieve the monitoring of the IGV opening degree and exhaust gas temperature of the gas turbine during the regulation of the warm-up load of the gas turbine.

[0064] After the controller collects the IGV opening degree and the exhaust gas temperature of the gas turbine, it further comprises:

[0065] S1, detecting the working parameters of the marine converted gas turbine in the working period in real time;

[0066] In the preferred but non-limiting embodiments of the present application, in S1, the working parameters include the IGV opening degree of the marine converted gas turbine. The working parameters are compared with the working definition quantity to obtain the treatment message. Here, the treatment message includes the alarm message, the analysis message and the working message. The working definition quantity includes the predefined IGV opening degree limit value.

[0067] The working period of the marine converted gas turbine is the working time of the marine converted gas turbine determined according to the working requirements of the marine converted gas turbine.

[0068] In the preferred but non-limiting embodiments of the present application, in S1, the IGV opening degree of the marine converted gas turbine is obtained, and it is compared with the IGV opening degree limit value and the IGV opening degree reference interval, respectively.

[0069] If the IGV opening degree exceeds the IGV opening degree limit value and is not in the IGV opening degree reference interval, an alarm message is formed;

[0070] If the IGV opening degree exceeds the IGV opening degree limit value and is in the IGV opening degree reference interval, an analysis message is formed;

[0071] If the IGV opening degree does not exceed the IGV opening degree limit value, a working message is formed. The alarm message, the analysis message and the working message are all defined in advance.

[0072] The analysis message is that the IGV opening degree has exceeded the IGV opening degree limit value, and then the real-time detection analysis is performed to avoid the IGV opening degree exceeding the IGV opening degree reference interval, so as to make the gas turbine work abnormally.

[0073] In the preferred but non-limiting embodiment of the present application, in S1, the method for obtaining the IGV opening degree reference interval is that the IGV opening degree defined in advance before the operation of the modified gas turbine, that is, the IGV opening degree limit value, is obtained, and the root mean square difference between the IGV opening degree limit value and the actual value of the IGV opening degree is subjected to total processing to obtain the IGV opening degree reference interval. For example, the IGV opening degree defined in advance before the operation of the modified gas turbine is named as KM, the root mean square difference of the IGV opening degree is ± XD, and then the IGV opening degree reference interval is [KM-XD, KM+XD].

[0074] S2, according to the analysis message, the modified gas turbine is subjected to real-time detection, and the present value of the analysis message is obtained in real time;

[0075] In the preferred but non-limiting embodiment of the present application, in S2, the present value includes the time duration, the time interval and the exceeding amplitude. According to the processing analysis of the present value, the alarm value is obtained, the alarm value and the alarm critical value are compared, and if the alarm value is not lower than the alarm critical value, the IGV opening degree alarm message is formed.

[0076] In the preferred but non-limiting embodiment of the present application, in S2, the frequency of the appearance of the real-time detection analysis message and the time used for the modified gas turbine to change the IGV opening degree once are obtained, and the frequency of the appearance of the real-time detection analysis message is multiplied by the time used for the modified gas turbine to change the IGV opening degree once to obtain the exceeding time, and the quantity obtained by dividing the exceeding time by the time used for the operation of the modified gas turbine is taken as the time duration, and is named as DY. The time used for the modified gas turbine to change the IGV opening degree once is the time used for the adjacent IGV opening degree conversion of the modified gas turbine to change twice.

[0077] The time used for the modified gas turbine to change the IGV opening degree once is defined in advance when the modified gas turbine is operated.

[0078] The time duration is: the total time of the IGV opening exceeding the IGV opening limit value during the operation of the modified gas turbine, and if the time duration is higher, it means that the condition of the IGV opening exceeding the IGV opening limit value of the modified gas turbine appears for a long time during the operation, and the abnormal condition of the unstable IGV opening is represented, and the pre-warning is performed.

[0079] In the preferred but non-limiting embodiment of the present application, in S2, the frequency of the working message appearing between the messages is detected and analyzed in real time, and the total time of the interval of the analyzed messages is obtained by multiplying the time of the modified gas turbine changing the IGV opening once;

[0080] The frequency of the interval between the analyzed messages is analyzed, and the average time of the interval of the analyzed messages is obtained by dividing the total time of the interval of the analyzed messages by the frequency of the interval between the analyzed messages, and the time interval quantity is obtained by dividing the average time of the interval of the analyzed messages by the time of the operation period of the modified gas turbine, and is named as KH.

[0081] The time interval quantity KH is: the interval time of the condition of the IGV opening exceeding the IGV opening limit value appearing during the operation of the modified gas turbine, and if the time interval quantity is lower, it means that the interval time of the condition of the IGV opening exceeding the IGV opening limit value appearing is smaller, and the continuity is better, and the pre-warning is performed.

[0082] In the preferred but non-limiting embodiment of the present application, in S2, the IGV opening of the modified gas turbine when the analyzed message appears is obtained in real time, and the difference between the IGV opening limit value is performed, and the modulus of the quantity obtained by the difference is taken as the corresponding IGV opening reduction when the analyzed message appears, and the average of the quantity obtained by accumulating the corresponding IGV opening reduction when all the analyzed messages appear is obtained, and the average is taken as the IGV opening reduction average, and the exceeding amplitude is obtained by dividing the IGV opening reduction average by the IGV opening limit value, and is named as QM.

[0083] The exceeding amplitude is: if the condition of the IGV opening exceeding the IGV opening limit value appears for several times, the exceeding amplitude under the average of the condition of the IGV opening exceeding the IGV opening limit value appearing for several times is not low, and the higher the exceeding amplitude is, it means that the IGV opening of several times is close to the IGV opening reference interval, and the pre-warning is performed.

[0084] In the preferred but non-limiting embodiment of the present application, in S2, the time duration DY, the time interval quantity KH and the exceeding amplitude QM obtained are performed numerical processing, and the equation is:

[0085] An alarm value ZK is obtained, where t1, t2 and t3 are predefined ratio factors.

[0086] In a preferred but non-limiting embodiment of the present application, in S2, the alarm value ZK and the alarm threshold are compared, and the comparison method comprises:

[0087] The predefined alarm threshold is Zz.

[0088] If the alarm value ZK is not lower than the alarm threshold Zz, it indicates that the IGV opening of the modified gas turbine exceeds the IGV opening limit value for several times and very consistently within the working period, and the IGV opening is close to the boundary of the IGV opening reference interval, so that the alarm is executed to prevent the IGV opening of the modified gas turbine from exceeding the IGV opening reference interval, so as to make the gas turbine work abnormally, and an IGV opening alarm message is formed.

[0089] If the alarm value YJ is lower than the alarm threshold, it indicates that the IGV opening of the modified gas turbine does not exceed the IGV opening limit value for several times and very consistently within the working period, and the IGV opening is not close to the boundary of the IGV opening reference interval, so that the alarm is not executed, and then the modified gas turbine continues to work normally, and the real-time detection is executed.

[0090] The real-time detection obtains the working parameters of the modified gas turbine within the working period, where the working parameters include the IGV opening of the modified gas turbine, the working parameters and the working defined value are compared, an alarm value is obtained, the alarm value and the alarm threshold are compared, if the alarm value is not lower than the alarm threshold, an IGV opening alarm message is formed. Through the analysis of the IGV opening of the modified gas turbine during the working period, the alarm value is obtained, if the IGV opening of the modified gas turbine exceeds the defined IGV opening for several times, the duration of the abnormality, the interval time and the abnormality amplitude are analyzed in real time, so that the modified gas turbine is alarmed, which is suitable for improving the working performance of the modified gas turbine, preventing failure from occurring in advance and reducing the working time of the modified gas turbine due to failure, and improving the working efficiency of the modified gas turbine.

[0091] The above has detected and analyzed the emission of the modified gas turbine, so that the IGV opening alarm message is obtained. However, in specific applications, the abnormality of the IGV opening of the modified gas turbine is often caused by the following factors:

[0092] 1. IGV component abnormality of a marine converted gas turbine;

[0093] 2. Exhaust gas temperature abnormality of a marine converted gas turbine.

[0094] The present application performs correct confirmation on the alarm type of the marine converted gas turbine by analyzing the exhaust gas temperature of the marine converted gas turbine at each time when the IGV opening degree of the marine converted gas turbine is changed, identifies whether the alarm type is the exhaust gas temperature abnormality of the marine converted gas turbine, and improves the alarm efficiency of injection molding.

[0095] In the preferred but non-limiting embodiment of the present application, after S2, further comprising:

[0096] S3, according to the IGV opening degree alarm message, obtaining the exhaust gas temperature of the marine converted gas turbine at each time when the IGV opening degree of the marine converted gas turbine is changed in the working period of the marine converted gas turbine, obtaining the action amount according to the disposal analysis on the exhaust gas temperature, and identifying whether the alarm type of the marine converted gas turbine is the exhaust gas temperature abnormality of the marine converted gas turbine according to the action amount.

[0097] In the preferred but non-limiting embodiment of the present application, in S3, the working period of the marine converted gas turbine is the period between the starting time of the working of the marine converted gas turbine and the time point when the IGV opening degree alarm message is formed;

[0098] The exhaust gas temperature is obtained by sampling the marine converted gas turbine at each time when the IGV opening degree of the marine converted gas turbine is changed by using a thermocouple;

[0099] In the working period of the marine converted gas turbine, the exhaust gas temperature of the marine converted gas turbine at each time when the IGV opening degree is changed is obtained when each time the alarm message appears, and is compared with the defined temperature value;

[0100] If the exhaust gas temperature of the marine converted gas turbine at each time when the IGV opening degree is changed is different from the defined temperature value, the IGV opening degree at each time is registered as the exhaust gas temperature abnormality condition;

[0101] If the exhaust gas temperature of the marine converted gas turbine at each time when the IGV opening degree is changed is the same as the defined temperature value, the IGV opening degree at each time is registered as the exhaust gas temperature reasonable condition;

[0102] The frequency of the exhaust gas temperature abnormality condition is counted, and the amount obtained by dividing the frequency of the alarm message appearing by the condition superposition amount 1 is registered as EZd;

[0103] And the condition superimposition quantity one is: during the operation of the converted gas turbine, the superimposition quantity of the IGV opening exceeding the IGV opening limit value and the exhaust gas temperature of the converted gas turbine after each time of changing the IGV opening exceeding the defined temperature value, here, if the condition superimposition quantity one is higher, it represents that the IGV opening exceeding the IGV opening limit value is accompanied by the exhaust gas temperature of the converted gas turbine after each time of changing the IGV opening exceeding the defined temperature value for several times.

[0104] In the exhaust gas temperature abnormal condition, the exhaust gas temperature of the converted gas turbine after each time of changing the IGV opening and the IGV opening are obtained, and the corresponding comparison with the defined temperature value and the IGV opening limit value is performed respectively, and the registration of the exhaust gas temperature abnormal condition is performed according to the comparison condition, which includes:

[0105] If the exhaust gas temperature is higher than the defined temperature value and the IGV opening is lower than the IGV opening limit value, the exhaust gas temperature abnormal condition is registered as a whole abnormal condition;

[0106] If the exhaust gas temperature is lower than the defined temperature value and the IGV opening is higher than the IGV opening limit value, the exhaust gas temperature abnormal condition is registered as a whole abnormal condition;

[0107] If the exhaust gas temperature is lower than the defined temperature value and the IGV opening is lower than the IGV opening limit value, the exhaust gas temperature abnormal condition is registered as a whole abnormal condition;

[0108] If the exhaust gas temperature is higher than the defined temperature value and the IGV opening is higher than the IGV opening limit value, the exhaust gas temperature abnormal condition is registered as a whole abnormal condition;

[0109] The frequency of the whole abnormal condition in the exhaust gas temperature abnormal condition is counted, and the quantity obtained by dividing the frequency of the exhaust gas temperature abnormal condition is taken as the condition superimposition quantity two, and is registered as ESd;

[0110] And the condition superimposition quantity two is: during the operation of the converted gas turbine, if the exhaust gas temperature of the converted gas turbine is lower than the defined temperature value, then because the exhaust gas temperature is lower, the corresponding IGV opening will increase, otherwise if the exhaust gas temperature is higher, then because of the exhaust gas temperature of the converted gas turbine, the corresponding IGV opening will decrease, and the condition superimposition quantity two reflects the occurrence frequency of the exhaust gas temperature abnormal condition in which the corresponding exhaust gas temperature and IGV opening are negatively correlated in all exhaust gas temperature abnormal conditions, and the greater the frequency quantity, the higher the condition superimposition quantity two, which represents the higher the effect of the exhaust gas temperature on the IGV opening.

[0111] obtaining the deviation of the exhaust gas temperature and the deviation of the IGV opening degree in the overall abnormal condition, and marking the deviations in the Cartesian system (the horizontal coordinate is the deviation of the exhaust gas temperature, and the vertical coordinate is the deviation of the IGV opening degree), and connecting the two adjacent points of the marked two points with a line segment to obtain a condition change line;

[0112] Here, the deviation of the exhaust gas temperature is the modulus of the quantity obtained by subtracting the defined temperature value from the exhaust gas temperature, and the deviation of the IGV opening degree is the modulus of the quantity obtained by subtracting the IGV opening degree limit value from the IGV opening degree;

[0113] Regarding each line segment in the condition change line as a sub-line;

[0114] Counting the number of sub-lines with a derivative greater than zero, and taking the quantity obtained by dividing the number by the total number of sub-lines as the orientation coordination quantity, and recording it as UC;

[0115] Determining the vertical span size of all sub-lines, and combining them into a span value cluster, obtaining the standard deviation of the span value cluster of the span value cluster and taking it as the span deviation presentation quantity, and recording it as GD;

[0116] Performing numerical processing on the obtained orientation coordination quantity UC and span deviation presentation quantity GD via the equation: Obtaining the condition superposition quantity three ETd, where χ and θ are predefined ratio factors;

[0117] The condition superposition quantity three is: in the overall abnormal condition, as the exhaust gas temperature increases, the IGV opening degree also increases, and the change of the IGV opening degree presents a consistent ratio change with the change of the exhaust gas temperature, the higher the condition superposition quantity three, the better the change coordination between the exhaust gas temperature and the IGV opening degree, and the higher the effect of the exhaust gas temperature on the IGV opening degree of the modified gas turbine.

[0118] Performing numerical processing on the obtained condition superposition quantity one EZd, condition superposition quantity two ESd, and condition superposition quantity three ETd via the equation Obtaining the effect quantity ZY, where β1, β2, and β3 are predefined ratio factors;

[0119] Comparing the effect quantity and the effect threshold quantity, the comparison method comprising:

[0120] If the action amount ZY is not lower than the action critical amount, it represents that during the working period of the aero-derivative gas turbine, if the IGV opening degree exceeds the IGV opening degree limit value for several times, the exhaust gas temperature also exceeds the defined temperature value, and the change of the exhaust gas temperature and the change of the IGV opening degree present a negative correlation relationship, and the higher the exhaust gas temperature exceeds, the higher the IGV opening degree exceeds, which means that the exhaust gas temperature of the aero-derivative gas turbine makes the IGV opening degree abnormal, so the alarm type of the aero-derivative gas turbine is the exhaust gas temperature abnormal alarm of the aero-derivative gas turbine;

[0121] If the action amount ZY is lower than the action critical amount, it represents that during the working period of the aero-derivative gas turbine, the exhaust gas temperature of the aero-derivative gas turbine does not make the IGV opening degree abnormal, so the specific inspection is performed on the other alarm elements, which includes the on-site inspection of the IGV damage and the gas turbine control loop alarm elements.

[0122] According to the IGV opening degree alarm message, the exhaust gas temperature of the aero-derivative gas turbine is obtained when the aero-derivative gas turbine is working, the action amount is obtained according to the treatment analysis of the exhaust gas temperature, and whether the alarm type of the aero-derivative gas turbine is the exhaust gas temperature abnormality of the aero-derivative gas turbine is determined according to the action amount. The aero-derivative gas turbine alarm formed by analyzing the change coordination between the exhaust gas temperature and the IGV opening degree of the aero-derivative gas turbine is analyzed, so as to determine the alarm type, so as to achieve accurate identification of the working alarm of the aero-derivative gas turbine, which is suitable for working improvement of the aero-derivative gas turbine, and if the alarm is not formed by the exhaust gas temperature abnormality of the aero-derivative gas turbine, it is suitable for efficient exploration of the other alarm elements.

[0123] As shown in Figure 2 The aero-derivative gas turbine IGV adjusting device provided by the application comprises:

[0124] The opening degree instrument, the thermocouple and the liquid crystal screen are connected with the controller. The opening degree instrument is used for sampling the IGV opening degree of the gas turbine and transmitting to the controller. The thermocouple is used for sampling the exhaust gas temperature of the gas turbine and transmitting to the controller. The controller is used for sending the collected IGV opening degree and exhaust gas temperature of the gas turbine to the liquid crystal screen for display, so as to achieve the monitoring of the IGV opening degree and the exhaust gas temperature of the gas turbine during the warm-up load adjustment of the gas turbine.

[0125] The module on the controller comprises:

[0126] The detection module is used for instantaneously detecting the working parameters of the aero-derivative gas turbine during the working period.

[0127] The analysis module is used for performing instantaneously detection on the aero-derivative gas turbine according to the analysis message, and instantaneously obtaining the present value of the analysis message.

[0128] The confirmation module is used for obtaining the exhaust gas temperature of the aero-derivative gas turbine with each time changed IGV opening degree in the working period of the aero-derivative gas turbine according to the IGV opening degree alarm message, obtaining the action amount according to the treatment analysis on the exhaust gas temperature, and determining whether the alarm type of the aero-derivative gas turbine is abnormal exhaust gas temperature of the aero-derivative gas turbine according to the action amount.

[0129] The present application has the advantages that, compared with the prior art, the present application instantaneously detects the working parameters of the aero-derivative gas turbine in the working period, wherein the working parameters include the IGV opening degree of the aero-derivative gas turbine, performs comparison between the working parameters and the working definition parameters to obtain the treatment message, wherein the treatment message includes the alarm message, the analysis message and the working message, performs instantaneously detection on the aero-derivative gas turbine according to the analysis message, and instantaneously obtains the presentation value of the analysis message, wherein the presentation value includes the time duration, the time interval and the abnormal amplitude, obtains the alarm value according to the treatment analysis on the presentation value, performs comparison between the alarm value and the alarm threshold, and forms the IGV opening degree alarm message if the alarm value is not lower than the alarm threshold, the present application analyzes the IGV opening degree of the aero-derivative gas turbine in the working period, obtains the alarm value, instantaneously analyzes the duration time, the interval time and the abnormal amplitude of the abnormal condition of the IGV opening degree of the aero-derivative gas turbine if the IGV opening degree of the aero-derivative gas turbine exceeds the defined IGV opening degree for several times, and determines the alarm of the aero-derivative gas turbine according to the IGV opening degree, which is suitable for improving the working performance of the aero-derivative gas turbine, avoiding failure in advance and reducing the working time of the aero-derivative gas turbine due to the failure of the aero-derivative gas turbine, and improving the working efficiency of the aero-derivative gas turbine, obtains the exhaust gas temperature of the aero-derivative gas turbine with each time changed IGV opening degree in the working period of the aero-derivative gas turbine according to the IGV opening degree alarm message, obtains the action amount according to the treatment analysis on the exhaust gas temperature, and determines whether the alarm type of the aero-derivative gas turbine is abnormal exhaust gas temperature of the aero-derivative gas turbine according to the action amount, the present application analyzes the change coordination between the exhaust gas temperature and the IGV opening degree of the aero-derivative gas turbine to analyze whether the alarm of the aero-derivative gas turbine is caused by abnormal exhaust gas temperature of the aero-derivative gas turbine, determines the alarm type according to the analysis, achieves accurate confirmation of the working alarm of the aero-derivative gas turbine, is suitable for improving the working of the aero-derivative gas turbine, and is suitable for efficiently exploring other alarm elements if the alarm is not caused by abnormal exhaust gas temperature of the aero-derivative gas turbine.

[0130] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application but not to limit it, and although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that modifications or equivalent replacements can still be made to the specific embodiments of the present application without departing from the spirit and scope of the present application, and any modification or equivalent replacement should be covered within the protection scope of the claims of the present application.

Claims

1. An IGV regulating method for an aeroderivative gas turbine, characterized by, The method comprises the following steps: The IGV opening degree of the gas turbine and the exhaust gas temperature of the gas turbine are adjusted by the gas turbine control loop of the aeroderivative gas turbine, so as to achieve the adjustment of the gas turbine warm-up load of the aeroderivative gas turbine, and the opening degree instrument samples the IGV opening degree of the gas turbine and transmits it to the controller, and the thermocouple samples the exhaust gas temperature of the gas turbine and transmits it to the controller, and the controller sends the collected IGV opening degree and exhaust gas temperature of the gas turbine to the liquid crystal screen for display, so as to achieve the monitoring of the IGV opening degree and exhaust gas temperature of the gas turbine during the adjustment of the gas turbine warm-up load; After collecting the IGV opening degree and exhaust gas temperature of the gas turbine, the controller further comprises the following steps: S1, instantaneously detecting the working parameters of the aeroderivative gas turbine during the working period; S2, according to the analysis message, then performing instantaneously detection on the aeroderivative gas turbine, and instantaneously obtaining the present value of the analysis message; In S1, the working parameters include the IGV opening degree of the aeroderivative gas turbine, the working parameters are compared with the working definition quantity, the treatment message is obtained, here, the treatment message includes the alarm message, the analysis message and the working message, and the working definition quantity includes the IGV opening degree limit value defined in advance; In S1, the IGV opening degree of the aeroderivative gas turbine is obtained, and it is compared with the IGV opening degree limit value and the IGV opening degree reference interval respectively; If the IGV opening degree exceeds the IGV opening degree limit value and is not in the IGV opening degree reference interval, an alarm message is formed; If the IGV opening degree exceeds the IGV opening degree limit value and is in the IGV opening degree reference interval, an analysis message is formed; If the IGV opening degree does not exceed the IGV opening degree limit value, a working message is formed; In S2, the present value includes the time duration, the time interval and the exceeding amplitude, the treatment analysis is performed on the present value, the alarm value is obtained, the alarm value is compared with the alarm threshold, if the alarm value is not lower than the alarm threshold, an IGV opening degree alarm message is formed; After S2, further comprising the following steps: S3, according to the IGV opening degree alarm message, during the working period of the aeroderivative gas turbine, the exhaust gas temperature of the aeroderivative gas turbine is obtained when the IGV opening degree of the aeroderivative gas turbine is changed each time, the treatment analysis is performed on the exhaust gas temperature, the action quantity is obtained, and it is determined according to the action quantity whether the alarm type of the aeroderivative gas turbine is the abnormal exhaust gas temperature of the aeroderivative gas turbine.

2. The aircraft derivative gas turbine engine IGV regulation method of claim 1, wherein, In S1, the method for obtaining the IGV opening reference range is: obtaining the IGV opening defined in advance before the operation of the aero-derivative gas turbine, that is, the IGV opening limit value, and performing total processing on the root mean square difference between the IGV opening limit value and the actual value of the IGV opening to obtain the IGV opening reference range. As the IGV opening defined in advance before the operation of the aero-derivative gas turbine is named , the root mean square difference of the IGV opening is obtained , and then the IGV opening reference range is .

3. The aircraft derivative gas turbine engine IGV regulation method of claim 2, wherein, In S2, the frequency of occurrence of the instant detection analysis message and the time taken for the aero derivative gas turbine to vary the IGV opening by 1 degree are multiplied together, the excess time is obtained, and the quantity obtained by dividing the excess time by the time taken for the aero derivative gas turbine to operate for the period is taken as the time period extension quantity, and is designated as ; In S2, the frequency of the appearance of the working message in the analysis message is instantaneously detected and totaled, and it is multiplied by the time used for changing the IGV opening degree of the aeroderivative gas turbine once to obtain the total time interval of the analysis message; The frequency at which the working messages are separated among the analysis messages, that is, the separation frequency of the analysis messages, is calculated, and the average time interval of the analysis messages is calculated by dividing the total time interval of the analysis messages by the separation frequency of the analysis messages. The time interval quantity is calculated by dividing the average time interval of the analysis messages by the working time period of the aero derivative gas turbine, and is named as ; In S2, the IGV opening degree of the modified gas turbine at the time of each analysis message appearance is acquired instantaneously, and a subtraction process is performed between the IGV opening degree and the IGV opening degree limit value, and the modulus of the quantity obtained by the subtraction is taken as the IGV opening degree decrement at the time of the corresponding analysis message appearance. The IGV opening degree decrements at the time of all analysis message appearances are subjected to accumulation, and the average of the quantity obtained by the accumulation is taken as the IGV opening degree decrement average. The quantity obtained by dividing the IGV opening degree decrement average by the IGV opening degree limit value is taken as the excess amplitude, and is given the name .

4. The aircraft derivative gas turbine engine IGV regulation method of claim 3, wherein, In S2, the obtained period extension amount , time interval amount and amplitude exceeding amount are subjected to numerical processing via the equation: The obtained alarm value is obtained by: , and are predefined ratio factors.

5. The aircraft derivative gas turbine engine IGV regulation method of claim 4, wherein, In S2, the alarm value is compared with the alarm threshold, the comparison method comprising: The pre-defined alarm threshold is ; If the alarm value is not lower than the alarm critical value , an IGV opening degree alarm message is formed. If the alarm value YJ is lower than the alarm threshold, it indicates that the IGV opening degree of the aeroderivative gas turbine does not exceed the IGV opening degree limit value for several times and is not very consecutive during the working period, and the IGV opening degree is not close to the boundary of the IGV opening degree reference interval, so it is not necessary to perform the alarm, then the aeroderivative gas turbine continues to work, and the instantaneously detection is continued to be performed.

6. The aircraft derivative gas turbine engine IGV regulation method of claim 5, wherein, In S3, the working period of the aeroderivative gas turbine is the time period from the starting time of the work of the aeroderivative gas turbine to the time point when the IGV opening degree alarm message is formed. The exhaust gas temperature is measured by using a thermocouple at each time the IGV opening degree is changed in the marine derivative gas turbine; The exhaust gas temperature of the marine derivative gas turbine at each time the IGV opening degree is changed is measured while the marine derivative gas turbine is in operation, and the measured temperature is compared with the defined temperature; If the exhaust gas temperature of the marine derivative gas turbine at each time the IGV opening degree is changed is different from the defined temperature, the IGV opening degree at each time is registered as an exhaust gas temperature abnormality; If the exhaust gas temperature of the marine derivative gas turbine at each time the IGV opening degree is changed is the same as the defined temperature, the IGV opening degree at each time is registered as an exhaust gas temperature normality; The frequency of the total abnormal condition of the exhaust gas temperature is counted, and the quantity obtained by dividing the frequency by the frequency of the analysis message is taken as the condition overlay quantity one, and is registered as ; In the exhaust gas temperature abnormality, the exhaust gas temperature and the IGV opening degree at each time the IGV opening degree is changed are measured, and the measured temperature and the defined temperature are compared with each other, and the measured IGV opening degree and the defined IGV opening degree are compared with each other, and the exhaust gas temperature abnormality is registered according to the comparison results, which includes: If the exhaust gas temperature is higher than the defined temperature and the IGV opening degree is lower than the defined IGV opening degree, the exhaust gas temperature abnormality is registered as a global abnormality; If the exhaust gas temperature is lower than the defined temperature and the IGV opening degree is higher than the defined IGV opening degree, the exhaust gas temperature abnormality is registered as a global abnormality; If the exhaust gas temperature is lower than the defined temperature and the IGV opening degree is lower than the defined IGV opening degree, the exhaust gas temperature abnormality is registered as a non-global abnormality; If the exhaust gas temperature is higher than the defined temperature and the IGV opening degree is higher than the defined IGV opening degree, the exhaust gas temperature abnormality is registered as a non-global abnormality; The frequency of the overall abnormal condition in the total flue gas temperature abnormal condition is counted, and the quantity obtained by dividing the frequency of the flue gas temperature abnormal condition by the quantity is taken as the condition overlap quantity two, and is registered as ; The deviation of the exhaust gas temperature and the deviation of the IGV opening degree in the global abnormality are measured, and the measured values are plotted in a Cartesian coordinate system, and the two adjacent points of each pair of plotted points are connected by a line segment, and a condition change line is obtained; Here, the deviation of the exhaust gas temperature is the modulus of the difference between the exhaust gas temperature and the defined temperature, and the deviation of the IGV opening degree is the modulus of the difference between the IGV opening degree and the defined IGV opening degree; Each line segment in the condition change line is regarded as a sub-line; The number of sub-lines whose total derivative is higher than zero is counted, and the quantity obtained by dividing this number by the total number of sub-lines is taken as the orientation coordination quantity, and this is registered as ; The vertical span size of all sub-lines is measured, and combined into a span value cluster, the standard deviation of the span value cluster is obtained and taken as a span deviation presentation quantity, and recorded as ; coordinating the obtained orientation and span skew presentation performing numerical treatment, via equation: obtaining condition superposition three here, and are predefined ratio factors; The obtained state overlap quantity one The state overlap quantity two The state overlap quantity three Perform numerical treatment, via equation : Obtain the action quantity Here, , And Are predefined ratio factors; The action amount and the action threshold are compared, and the comparison method includes: If the action amount is not lower than the action critical amount, it indicates that the warning type of the converted gas turbine during the operation of the converted gas turbine is the abnormal warning of the exhaust gas temperature value of the converted gas turbine. If the action amount is lower than the action threshold amount, it is characterized that, during the operation of the converted gas turbine, the exhaust gas temperature of the converted gas turbine does not cause the IGV opening to be abnormal, and a specific check is performed on another alarm element.

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