A method for evaluating an inlet environment simulation of a turbine component transition state test

Abstract

The application belongs to the technical field of turbine component transient state test, and particularly relates to a turbine component transient state test inlet environment simulation evaluation method. Time is taken as a reference, interpolation method is used to calculate corresponding values of discrete points of turbine inlet environment parameters in the whole machine environment transient state, and then the deviation is calculated, and the maximum deviation is taken to evaluate the turbine component transient state test inlet environment simulation. The turbine component transient state test inlet environment simulation can be efficiently and reliably evaluated, and the effective development of the turbine component transient state test is promoted.

Description

Technical Field

[0001] This application belongs to the field of turbine component transient testing technology, specifically relating to a method for simulating and evaluating the inlet environment of turbine component transient testing. Background Technology

[0002] Turbines are the core hot-end components of aero engines and gas turbines. The internal flow, heat transfer, and geometry changes during the transition state are extremely complex, making them the part facing the highest risks.

[0003] Conducting transient state tests on turbine components can directly obtain effective data on changes in aerodynamic, thermodynamic, and structural parameters during the turbine's transient state, which can be used to support the matching design of aero engines and gas turbines.

[0004] In the overall engine environment, the turbine's inlet environment, mainly including total temperature and total pressure, is affected by upstream components such as the combustion chamber and changes according to a certain pattern. It also has instantaneous characteristics in the transition state. When conducting turbine component transition state tests, it is necessary to quickly adjust the turbine inlet environment and simulate the turbine inlet environment according to the instantaneous change curve.

[0005] Currently, there is a lack of a method for efficiently and reliably evaluating the inlet environment simulation of turbine component transient tests, which severely restricts the conduct of turbine component transient tests. Therefore, this application is proposed.

[0006] It should be noted that the above background information is only used to assist in understanding the inventive concept and technical solution of this application, and it does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0007] The purpose of this application is to provide a method for simulating and evaluating the inlet environment of turbine component transient tests, so as to promote the effective implementation of turbine component transient tests.

[0008] The technical solution of this application is:

[0009] A method for simulating and evaluating the inlet environment during transient testing of turbine components includes:

[0010] Extract the characteristic point t of the start time of the overall machine environment transition state from the discrete points of the turbine inlet environmental parameters under the overall machine environment transition state. g,0 Time span Δt g ;

[0011] Collect inlet environmental parameter data for the turbine component transient state test, and extract the characteristic point t of the turbine component transient state initiation time. s,0 ;

[0012] Calculate t s,0 +Δt g Data on inlet environmental parameters of turbine components during transient test within a given time period, distance t s,0 The time interval Δt s ;

[0013] Calculate t s,0 +Δt g The time position t of the turbine inlet environmental parameter data points during the transient test of the turbine component within the time period, in the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment. g =t g,0 +Δt s ;

[0014] Take the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment, located at t g The data points on both sides are used to calculate t using linear interpolation. s,0 +Δt g The corresponding values ​​of the turbine inlet environmental parameters at each point of the transient test of the turbine component within the time period, in the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment;

[0015] Calculate t s,0 +Δt g The deviations between the inlet environmental parameter data of each point of the turbine component transient test within a time period and the corresponding values ​​of the turbine inlet environmental parameter discrete points under the transient state of the whole machine are taken, and the maximum deviation is used to evaluate the turbine component transient test inlet environmental simulation.

[0016] According to at least one embodiment of this application, in the above-described turbine component transition state test inlet environment simulation evaluation method, the inlet environment parameters include inlet total pressure and inlet total temperature.

[0017] According to at least one embodiment of this application, in the above-described method for simulating and evaluating the inlet environment of a turbine component transition state test, t is calculated. s,0 +Δt g Data on inlet environmental parameters of turbine components during transient test within a given time period, distance t s,0 The time interval Δt s Specifically:

[0018] Δt s =i / f;

[0019] in,

[0020] i is t s,0 +Δt g The sequence numbers of each point in the inlet environmental parameter data of the turbine component transient test within the time period;

[0021] f represents the acquisition frequency of inlet environmental parameter data for the turbine component transient test.

[0022] According to at least one embodiment of this application, in the above-described method for simulating and evaluating the inlet environment of a turbine component transition state test, t is calculated. s,0 +Δt g The deviations between the turbine component transient test inlet environmental parameter data at various points within the time period and the corresponding values ​​at discrete points of the turbine inlet environmental parameters under the overall machine transient state are as follows:

[0023]

[0024] in,

[0025] δT is t s,0 +Δt g The deviation between the inlet environmental parameter data of the turbine component during the transient test within a certain time period and the corresponding values ​​of the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment;

[0026] T s * For t s,0 +Δt g Data points of inlet environmental parameters during the transient state test of turbine components within a given time period;

[0027] T g * For t s,0 +Δt g The corresponding values ​​of each point of the turbine component transient test inlet environmental parameter data within the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment.

[0028] According to at least one embodiment of this application, in the above-described method for simulating and evaluating the inlet environment of a turbine component transition state test, the evaluation of the turbine component transition state test inlet environment simulation specifically includes:

[0029] If (δT) max If the value is ≤5%, the turbine component transient test inlet environment simulation is considered to meet the test requirements; otherwise, the turbine component transient test inlet environment simulation is considered to not meet the test requirements.

[0030] in,

[0031] (δT) max For t s,0 +Δt g The maximum deviation between the inlet environmental parameter data of each point of the turbine component transient test within a time period and the corresponding values ​​of the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment.

[0032] This application has at least the following beneficial technical effects:

[0033] This paper provides a method for simulating and evaluating the inlet environment of turbine component transient test. The method uses time as a benchmark and interpolation to calculate the corresponding values ​​of turbine inlet environment parameters at various points in the transient test under the overall machine environment. Then, the deviation is calculated, and the maximum deviation is taken to evaluate the simulation of the turbine component transient test inlet environment. This method can efficiently and reliably evaluate the simulation of the turbine component transient test inlet environment, and promote the effective implementation of turbine component transient test. Attached Figure Description

[0034] Figure 1 This application embodiment extracts the feature point t of the start time of the overall machine environment transition state from the discrete points of the turbine inlet environmental parameters under the transition state of the overall machine environment. g,0 Time span Δt g A schematic diagram;

[0035] Figure 2 This application provides an embodiment for collecting inlet environmental parameter data from the transient state test of turbine components and extracting the transient state initiation time feature point t of the turbine components. s,0 , extract t s,0 +Δt g A schematic diagram of the inlet environmental parameter data at various points during the transient state test of the turbine component within a given time period;

[0036] Figure 3 The calculation t provided in the embodiments of this application s,0 +Δt g Data on inlet environmental parameters of turbine components during transient test within a given time period, distance t s,0 The time interval Δt s A schematic diagram;

[0037] Figure 4 The calculation t provided in the embodiments of this application s,0 +Δt g The time position t of the turbine inlet environmental parameter data points during the transient test of the turbine component within the time period, in the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment. g =t g,0 +Δt s A schematic diagram showing the corresponding values ​​of the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment, obtained by linear interpolation calculation. Detailed Implementation

[0038] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.

[0039] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The words “an,” “a,” or “the,” and similar terms used in this application description shall not be construed as an absolute limitation on quantity, but rather as indicating the presence of at least one. The words “comprising,” “including,” or similar terms used in this application description mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0040] The following is in conjunction with the appendix Figures 1 to 4 This application will be described in further detail.

[0041] A method for simulating and evaluating the inlet environment during transient testing of turbine components includes the following steps.

[0042] Step 1: Extract the characteristic point t of the start time of the overall machine environment transition state from the discrete points of the turbine inlet environmental parameters under the overall machine environment transition state. g,0 Time span Δt g ,like Figure 1 As shown, the imported environmental parameters may specifically include the total imported temperature and the total imported pressure.

[0043] Step 2: Collect inlet environmental parameter data for the turbine component transient state test and extract the characteristic point t of the turbine component transient state initiation time. s,0 , extract t s,0 +Δt g Data on various points of the inlet environmental parameters during the transient state test of turbine components within a given time period, such as... Figure 2 As shown.

[0044] Step 3: Calculate t s,0 +Δt g Data on inlet environmental parameters of turbine components during transient test within a given time period, distance t s,0 The time interval Δt s Specifically:

[0045] Δt s =i / f;

[0046] in,

[0047] i is t s,0 +Δt g The sequence numbers of each point in the inlet environmental parameter data of the turbine component transient test within the time period;

[0048] f represents the acquisition frequency of inlet environmental parameter data for the turbine component transient test.

[0049] For t s,0 +Δt g The j-th data point T of the inlet environmental parameters during the transient state test of turbine components within a given time period. s,j * , there is Δt s,j =j / f, such as Figure 3 As shown.

[0050] Step 4: Calculate t s,0 +Δt g The time position t of the turbine inlet environmental parameter data points during the transient test of the turbine component within the time period, in the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment. g =t g,0 +Δt s ;

[0051] Take the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment, located at t g The data points on both sides are used to calculate t using linear interpolation. s,0 +Δt g The corresponding values ​​of the turbine inlet environmental parameters at each point of the transient test of the turbine component within the time period, in the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment.

[0052] For t s,0 +Δt g The j-th data point T of the inlet environmental parameters during the transient state test of turbine components within a given time period. s,j * , there is t g,j =t g,0 +Δt s,j The data points located on both sides of the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment are T. g,x T g,y The corresponding time is t. g,x t g,y The corresponding value obtained by linear interpolation is T. g,j * ,like Figure 4 As shown.

[0053] Step 5: Calculate t s,0 +Δt gT data of inlet environmental parameters at various points during the transient test of turbine components within a given time period. s * The corresponding value T at the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment. g * Deviation between Take the largest deviation (δT). max The inlet environment simulation of the transition state test for turbine components is evaluated. If (δT) max If the value is ≤5%, the turbine component transient test inlet environment simulation is considered to meet the test requirements; otherwise, the turbine component transient test inlet environment simulation is considered not to meet the test requirements.

[0054] For t s,0 +Δt g The j-th data point T of the inlet environmental parameters during the transient state test of turbine components within a given time period. s,j * ,have

[0055] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A method for simulating and evaluating the inlet environment during transient state testing of turbine components, characterized in that, include: Extract the characteristic point t of the start time of the overall machine environment transition state from the discrete points of the turbine inlet environmental parameters under the overall machine environment transition state. g,0 Time span Δt g ; Collect inlet environmental parameter data for the turbine component transient state test, and extract the characteristic point t of the turbine component transient state initiation time. s,0 ; Calculate t s,0 +Δt g Data on inlet environmental parameters of turbine components during transient test within a given time period, distance t s,0 The time interval Δt s ; Calculate t s,0 +Δt g The time position t of the turbine inlet environmental parameter data points during the transient test of the turbine component within the time period, in the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment. g =t g,0 +Δt s ; Take the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment, located at t g The data points on both sides are used to calculate t using linear interpolation. s,0 +Δt g The corresponding values ​​of the turbine inlet environmental parameters at each point of the transient test of the turbine component within the time period, in the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment; Calculate t s,0 +Δt g The deviations between the inlet environmental parameter data of each point of the turbine component transient test within a time period and the corresponding values ​​of the turbine inlet environmental parameter discrete points under the transient state of the whole machine are taken, and the maximum deviation is used to evaluate the turbine component transient test inlet environmental simulation.

2. The turbine component transient state test inlet environment simulation and evaluation method according to claim 1, characterized in that, Import environmental parameters include total import pressure and total import temperature.

3. The method for simulating and evaluating the inlet environment of turbine components during transient testing according to claim 1, characterized in that, Calculate t s,0 +Δt g Data on inlet environmental parameters of turbine components during transient test within a given time period, distance t s,0 The time interval Δt s Specifically: Δt s =i / f; in, i is t s,0 +Δt g The sequence numbers of each point in the inlet environmental parameter data of the turbine component transient test within the time period; f represents the acquisition frequency of inlet environmental parameter data for the turbine component transient test.

4. The method for simulating and evaluating the inlet environment of turbine components during transient testing according to claim 1, characterized in that, Calculate t s,0 +Δt g The deviations between the turbine component transient test inlet environmental parameter data at various points within the time period and the corresponding values ​​at discrete points of the turbine inlet environmental parameters under the overall machine transient state are as follows: in, δT is t s,0 +Δt g The deviation between the turbine component transient test inlet environmental parameter data at each point within the time period and the corresponding values ​​at the discrete points of the turbine inlet environmental parameter under the transient state of the whole machine environment; T s * For t s,0 +Δt g Data points of inlet environmental parameters during the transient state test of turbine components within a given time period; T g * For t s,0 +Δt g The corresponding values ​​of each point of the turbine component transient test inlet environmental parameter data within the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment.

5. The method for simulating and evaluating the inlet environment of turbine components during transient testing according to claim 1, characterized in that, The inlet environment simulation for the transient test of turbine components was evaluated, specifically as follows: If (δT) max If the value is ≤5%, the turbine component transient test inlet environment simulation is considered to meet the test requirements; otherwise, the turbine component transient test inlet environment simulation is considered to not meet the test requirements. in, (δT) max For t s,0 +Δt g The maximum deviation between the inlet environmental parameter data of each point of the turbine component transient test within a time period and the corresponding values ​​of the discrete points of the turbine inlet environmental parameters under the transient state of the whole machine environment.

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