Method and system for determining design parameters of air inlet cylinder runner of lateral air inlet device

Abstract

The invention provides a method and system for determining design parameters of an air inlet cylinder runner of a lateral air inlet device. The method comprises the following steps: acquiring upper and lower control point coordinates of an inlet outer runner of a gas compressor connected with an air inlet cylinder in the heavy-duty gas turbine, upper and lower control point coordinates of an inlet inner runner of the gas compressor, axial coordinates of a support plate inlet position marking line, axial coordinates of a support plate outlet position marking line and a plurality of groups of preset air inlet cylinder runner first parameters; respectively determining all coordinate points of the air inlet cylinder flow channel corresponding to the multiple groups of preset first parameters of the air inlet cylinder flow channel; generating air inlet cylinder runners corresponding to each group of preset air inlet cylinder runner first parameters; according to the method, the uniformity of incoming flow air of an air inlet cylinder flow channel is evaluated, an optimal first parameter is screened, and then the optimal first parameter serves as a design parameter of the air inlet cylinder flow channel. According to the technical scheme provided by the invention, the phenomenon of non-uniform air flow at the inlet of the air compressor entrained by the lateral air inlet device can be improved, the molded line of the air inlet cylinder is quickly generated, and the design time is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of heavy-duty gas turbine design, and in particular to a method and system for determining design parameters of an intake cylinder flow passage of a lateral intake device. Background Art

[0002] The air intake system of a heavy-duty gas turbine is generally a lateral air intake. After being filtered by the air intake system, the air is turned 90 degrees to enter the compressor intake chamber. The airflow turning causes the inlet airflow at the front end of the compressor to be circumferentially uneven. Affected by the centripetal force, the airflow velocity on the outside of the flow channel is higher, and the velocity on the inside is lower. The gas turbine compressor is very sensitive to the quality of the inlet airflow. The uneven airflow can easily cause the compressor to enter a stall state, and in severe cases, it can even cause surge, seriously affecting the safe operation of the compressor. Especially in the startup state, the compressor is more sensitive to the uniformity of the airflow. If the airflow at the outlet of the lateral air intake device is not treated, it may cause the gas turbine to fail to start or even be damaged.

[0003] At present, there is no fixed standard for the design of the profile of the mainstream gas turbine cylinder flow channel. Generally, single-segment or multi-segment arcs are used for modeling, and the dimensions of the internal and external flow channels are restricted during the design process. However, this modeling method has two problems: the configuration of the internal and external flow channel profiles needs to be repeatedly iterated during the design process to meet the design requirements, and there is no fixed profile structure form, the degree of freedom is uncontrollable, etc., resulting in the inability to quickly generate the intake cylinder profile, the design takes a long time, and the uniformity of the airflow cannot be guaranteed. Therefore, it is urgent to propose a solution with short design time, controllable degrees of freedom and good airflow uniformity. Summary of the invention

[0004] The present application provides a method and system for determining design parameters of an intake cylinder flow passage of a lateral intake device, so as to at least solve the technical problems of long intake cylinder profile design time and uncontrollable degrees of freedom.

[0005] The first embodiment of the present application provides a method for determining design parameters of an intake cylinder flow passage of a lateral intake device, the method comprising:

[0006] Obtaining the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and multiple sets of preset first parameters of the intake cylinder flow channel;

[0007] According to the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the inlet cylinder in the heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and the multiple groups of preset first parameters of the inlet cylinder flow channel, the coordinate points of the inlet cylinder flow channel corresponding to the multiple groups of preset first parameters of the inlet cylinder flow channel are determined respectively;

[0008] Generate intake cylinder flow channels corresponding to each set of preset intake cylinder flow channel first parameters based on each coordinate point of the intake cylinder flow channels corresponding to the plurality of sets of preset intake cylinder flow channel first parameters;

[0009] The uniformity of the incoming air of the intake cylinder runner corresponding to each group of preset first parameters of the intake cylinder runner is evaluated, and based on the evaluation results, the optimal first parameter is selected from the multiple groups of preset first parameters of the intake cylinder runner, and then the optimal first parameter is used as the design parameter of the intake cylinder runner.

[0010] Preferably, the first parameter of the intake cylinder flow passage includes:

[0011] The angle between the inlet straight section of the flow channel inside the intake cylinder and the axial direction, the angle between the inlet straight section of the flow channel outside the intake cylinder and the axial direction, the radial coordinates of the intersection of the support plate in the flow channel of the intake cylinder and the flow channel inside the intake cylinder, the axial length of the outlet straight section of the flow channel inside the intake cylinder, the axial distance between the starting point of the inlet straight section of the flow channel outside the intake cylinder and point a, and the ratio of the tangent circle area at the flow channel inlet to the tangent circle area at the outlet; point a is the control point on the inlet external flow channel of the compressor connected to the intake cylinder;

[0012] The inner flow channel is composed of a first straight line, a first circular arc, and a second straight line in sequence;

[0013] The outer flow channel is composed of a third straight line and a second arc in sequence;

[0014] Wherein, the first straight line and the second arc are located at the outlet end of the intake cylinder;

[0015] The second straight line and the third straight line are located at the inlet end of the intake cylinder;

[0016] Two ends of the first circular arc are connected to the first straight line and the second straight line respectively;

[0017] The coordinate points of the intake cylinder flow channel include: 0 point coordinate, 1 point coordinate, 2 point coordinate, 3 point coordinate, 4 point coordinate, 5 point coordinate, 6 point coordinate;

[0018] Wherein, the 0 point coordinates are the coordinates of the control point on the flow channel inside the compressor inlet;

[0019] The 1-point coordinate is the coordinate of the connection point between the first straight line and the first circular arc;

[0020] The two-point coordinates are the coordinates of the connecting point between the first circular arc and the second straight line;

[0021] The three-point coordinates are the coordinates of the second straight line at the inlet end of the intake cylinder;

[0022] The four-point coordinates are the coordinates of the second arc at the inlet end of the intake cylinder;

[0023] The five-point coordinates are the coordinates of the connection points between the third straight line and the second circular arc;

[0024] The six-point coordinates are the coordinates of the control points on the inlet outer flow channel of the compressor.

[0025] Further, the coordinate points of the intake cylinder flow channel corresponding to the plurality of sets of preset first parameters of the intake cylinder flow channel are determined respectively according to the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and the plurality of sets of preset first parameters of the intake cylinder flow channel, including:

[0026] The tangent angle of point c at the compressor inlet is determined according to the upper control point of the compressor inlet inner flow passage and the lower control point of the compressor inlet inner flow passage, and the tangent angle of point a at the compressor inlet is determined according to the upper control point of the compressor inlet outer flow passage and the lower control point of the compressor inlet outer flow passage;

[0027] According to the tangent angle of point c at the compressor inlet, the tangent angle of point a at the compressor inlet, the axial coordinate of the support plate inlet position marking line, the axial coordinate of the support plate outlet position marking line and multiple groups of preset first parameters of the intake cylinder flow channel, respectively determine the 1-point coordinate, 2-point coordinate, 3-point coordinate, 4-point coordinate and 5-point coordinate of the intake cylinder flow channel corresponding to each group of preset first parameters of the intake cylinder flow channel;

[0028] Among them, the upper control point of the compressor inlet outer flow channel is control point a, the lower control point of the compressor inlet outer flow channel is control point b, the upper control point of the compressor inlet inner flow channel is control point c, and the lower control point of the compressor inlet inner flow channel is control point d.

[0029] Further, the 1-point coordinate, 2-point coordinate, 3-point coordinate, 4-point coordinate, and 5-point coordinate of the intake cylinder flow channel corresponding to each set of preset intake cylinder flow channel first parameters are determined according to the tangent angle of point c at the compressor inlet, the tangent angle of point a at the compressor inlet, the axial coordinate of the support plate inlet position marking line, the axial coordinate of the support plate outlet position marking line, and multiple sets of preset intake cylinder flow channel first parameters, including:

[0030] Determine the coordinates of the point corresponding to each set of preset first parameters of the intake cylinder flow channel according to the coordinates of the control point on the compressor inlet inner flow channel, the tangent angle of point c at the compressor inlet, and the axial length of the straight line segment at the outlet of the intake cylinder inner flow channel in each set of preset first parameters of the intake cylinder flow channel;

[0031] Determine the coordinates of the two points corresponding to each set of preset first parameters of the intake cylinder flow channel according to the coordinates of the control points on the inlet outer flow channel of the compressor, the radial coordinates of the intersection of the support plate in the intake cylinder flow channel and the inner flow channel of the intake cylinder in each set of preset first parameters of the intake cylinder flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and the tangent angle of point c at the compressor inlet, the angle between the inlet straight line segment of the inner flow channel of the intake cylinder in each set of preset first parameters of the intake cylinder flow channel and the axial direction, and the coordinates of the one point;

[0032] Determine the first straight line equation corresponding to each set of preset intake cylinder runner first parameters between the two-point coordinates and the three-point coordinates according to the two-point coordinates and the angle between the inlet straight line segment of the intake cylinder runner in each set of preset intake cylinder runner first parameters and the axial direction, and then perform iterative calculation based on the ratio of the tangent circle area of ​​the runner inlet to the tangent circle area of ​​the outlet in each set of preset intake cylinder runner first parameters and the first straight line equation corresponding to each set of preset intake cylinder runner first parameters, to obtain the three-point coordinates and the four-point coordinates corresponding to each set of preset intake cylinder runner first parameters;

[0033] The coordinates of the five points corresponding to each group of preset first parameters of the intake cylinder flow channel are determined according to the coordinates of the control points on the compressor inlet inner flow channel, the angle between the inlet straight line segment of the intake cylinder outer flow channel and the axial direction corresponding to each group of preset first parameters of the intake cylinder flow channel, the tangent angle of point a at the compressor inlet, and the coordinates of the control points on the compressor inlet outer flow channel.

[0034] Further, the coordinates of the two points corresponding to each set of preset first parameters of the intake cylinder flow channel are determined according to the coordinates of the control point on the inlet outer flow channel of the compressor, the radial coordinates of the intersection of the support plate in the intake cylinder flow channel and the inner flow channel of the intake cylinder in each set of preset first parameters of the intake cylinder flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and the tangent angle of point c at the compressor inlet, the angle between the inlet straight line segment of the inner flow channel of the intake cylinder in each set of preset first parameters of the intake cylinder flow channel and the axial direction, and the coordinates of the one point, including:

[0035] Determine the radius of the first arc according to the coordinates of the control point on the compressor inlet outer flow channel, the radial coordinates of the intersection of the support plate in the inlet cylinder flow channel and the inlet cylinder inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and the tangent angle of point c at the compressor inlet;

[0036] The two-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow channel are determined according to the radius of the first arc, the tangent angle of point c at the compressor inlet, the angle between the straight line segment of the intake cylinder flow channel inlet and the axial direction in each group of preset first parameters of the intake cylinder flow channel, and the one-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow channel.

[0037] Furthermore, the iterative calculation is performed based on the ratio of the tangent circle area at the flow channel inlet to the tangent circle area at the outlet in each set of preset intake cylinder flow channel first parameters and the first straight line equation corresponding to each set of preset intake cylinder flow channel first parameters to obtain the three-point coordinates and the four-point coordinates corresponding to each set of preset intake cylinder flow channel first parameters, including:

[0038] Step F1: giving an initial value of the ratio DR1 of the diameter D1 of the tangent circle at the flow channel inlet to the diameter D0 of the tangent circle at the outlet, and determining the radius of the tangent circle at the flow channel inlet based on the initial value;

[0039] Step F2: determining the horizontal coordinates of the four-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel according to the axial coordinates of the support plate inlet position marking line and the axial distance between the starting point of the inlet straight line segment of the intake cylinder outer flow channel and point a in each set of preset first parameters of the intake cylinder flow channel;

[0040] Step F3: determining the abscissas of the three-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel according to the abscissas of the four-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel, the radius of the tangent circle of the flow channel inlet, the angle between the inlet straight line segment of the intake cylinder outer flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel, and the angle between the inlet straight line segment of the intake cylinder inner flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel;

[0041] Step F4: determining the ordinates of the three points corresponding to each set of preset first parameters of the intake cylinder flow passage according to the abscissas of the three points corresponding to each set of preset first parameters of the intake cylinder flow passage, the angle between the inlet straight line segment of the intake cylinder inner flow passage and the axial direction, and the coordinates of the lower control point of the inlet outer flow passage;

[0042] Step F5: determining the ordinates of the four points corresponding to each set of preset first parameters of the intake cylinder flow channel according to the ordinates of the three points corresponding to each set of preset first parameters of the intake cylinder flow channel, the radius of the tangent circle of the flow channel inlet, the angle between the inlet straight line segment of the inlet cylinder flow channel in each set of preset first parameters of the intake cylinder flow channel and the axial direction, and the angle between the inlet straight line segment of the inlet cylinder flow channel in each set of preset first parameters of the intake cylinder flow channel and the axial direction;

[0043] Step F6: determining the area of ​​the flow channel inlet corresponding to each set of preset first parameters of the intake cylinder flow channel according to the ordinates of the three-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel, the ordinates of the four-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel, the angle between the inlet straight line segment of the inlet cylinder flow channel in each set of preset first parameters of the intake cylinder flow channel and the axial direction, and the angle between the inlet straight line segment of the inlet cylinder flow channel in each set of preset first parameters of the intake cylinder flow channel and the axial direction;

[0044] Step F7: determining the ratio of the area of ​​the flow channel inlet corresponding to each set of preset intake cylinder flow channel first parameters to the area of ​​the flow channel outlet corresponding to each set of preset intake cylinder flow channel first parameters;

[0045] Step F8: Determine whether the ratio of the area of ​​the channel inlet corresponding to each group of preset intake cylinder channel first parameters to the area of ​​the channel outlet corresponding to each group of preset intake cylinder channel first parameters and the difference between the ratio of the tangent circle area of ​​the channel inlet to the tangent circle area of ​​the outlet in each group of preset intake cylinder channel first parameters is greater than 0.001; if so, add 0.001 to the ratio of the tangent circle diameter of the channel inlet to the tangent circle diameter of the outlet, and return to step F1 until the difference is less than or equal to 0.001.

[0046] Further, the coordinates of the five points corresponding to each group of preset first parameters of the intake cylinder flow channel are determined according to the coordinates of the lower control point of the compressor inlet inner flow channel, the angle between the inlet straight line segment of the intake cylinder outer flow channel and the axial direction corresponding to each group of preset first parameters of the intake cylinder flow channel, the tangent angle of point a at the compressor inlet, and the coordinates of the control point a on the inlet outer flow channel of the compressor, including:

[0047] Determine the slope of the straight line between the four-point coordinates corresponding to each set of preset intake cylinder flow channel first parameters and the five-point coordinates corresponding to each set of preset intake cylinder flow channel first parameters based on the angle α2 between the inlet straight line segment of the intake cylinder outer flow channel and the axial direction in each set of preset intake cylinder flow channel first parameters;

[0048] Determine the radius of the second arc corresponding to each set of preset first parameters of the intake cylinder flow channel according to the slope of the straight line, the coordinates of the four points corresponding to each set of preset first parameters of the intake cylinder flow channel, the coordinates of the control point on the inlet external flow channel of the compressor, the angle between the inlet straight line segment of the intake cylinder external flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel, and the tangent angle of point a at the compressor inlet;

[0049] The coordinates of the five points corresponding to each group of preset first parameters of the intake cylinder flow channel are determined based on the coordinates of the control points on the inlet external flow channel of the compressor, the radius corresponding to the second arc corresponding to each group of preset first parameters of the intake cylinder flow channel, the angle between the inlet straight line segment of the intake cylinder external flow channel and the axial direction in each group of preset first parameters of the intake cylinder flow channel, and the tangent angle of point a at the compressor inlet in each group of preset first parameters of the intake cylinder flow channel.

[0050] The second embodiment of the present application provides a system for determining design parameters of an intake cylinder flow passage of a lateral intake device, comprising:

[0051] An acquisition module is used to acquire the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line, and multiple sets of preset first parameters of the intake cylinder flow channel;

[0052] A determination module, for respectively determining the coordinate points of the intake cylinder flow channel corresponding to the plurality of sets of preset first parameters of the intake cylinder flow channel according to the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line, and the plurality of sets of preset first parameters of the intake cylinder flow channel;

[0053] A generating module, configured to generate intake cylinder flow channels corresponding to each set of preset first parameters of the intake cylinder flow channels based on each coordinate point of the intake cylinder flow channels corresponding to the plurality of sets of preset first parameters of the intake cylinder flow channels;

[0054] The optimization module is used to evaluate the uniformity of the incoming air of the intake cylinder runner corresponding to each group of preset first parameters of the intake cylinder runner, and select the optimal first parameter from the multiple groups of preset first parameters of the intake cylinder runner based on the evaluation results, and then use the optimal first parameter as the design parameter of the intake cylinder runner.

[0055] The third aspect of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method described in the first aspect is implemented.

[0056] A fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the first aspect of the present application.

[0057] The technical solution provided by the embodiments of the present application brings at least the following beneficial effects:

[0058] The present application proposes a method and system for determining the design parameters of the intake cylinder flow channel of a lateral intake device, the method comprising: obtaining the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in a heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and multiple sets of preset first parameters of the intake cylinder flow channel; according to the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel , the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and multiple groups of preset intake cylinder flow channel first parameters respectively determine the coordinate points of the intake cylinder flow channel corresponding to the multiple groups of preset intake cylinder flow channel first parameters; based on the coordinate points of the intake cylinder flow channel corresponding to the multiple groups of preset intake cylinder flow channel first parameters respectively generate the intake cylinder flow channels corresponding to each group of preset intake cylinder flow channel first parameters; evaluate the uniformity of the incoming air of the intake cylinder flow channels corresponding to each group of preset intake cylinder flow channel first parameters, and select the optimal first parameter from the multiple groups of preset intake cylinder flow channel first parameters based on the evaluation results, and then use the optimal first parameter as the design parameter of the intake cylinder flow channel. The technical solution proposed in this application can improve the phenomenon of uneven airflow at the compressor inlet of the lateral intake device, quickly generate the intake cylinder profile, and shorten the design time.

[0059] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0061] Figure 1 A flow chart of a method for determining design parameters of an intake cylinder flow passage of a lateral intake device provided according to an embodiment of the present application;

[0062] Figure 2 A schematic diagram of the profile from the cylinder flow passage to the compressor inlet section of a lateral air intake device provided according to an embodiment of the present application;

[0063] Figure 3 A schematic diagram of profile control parameters of a cylinder flow channel of a lateral air intake device provided according to an embodiment of the present application;

[0064] Figure 4 A structural diagram of a system for determining design parameters of an intake cylinder flow passage of a lateral air intake device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0065] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0066] The present application proposes a method and system for determining the design parameters of the intake cylinder flow channel of a lateral intake device, the method comprising: obtaining the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and multiple sets of preset first parameters of the intake cylinder flow channel; according to the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel , the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and multiple groups of preset intake cylinder flow channel first parameters respectively determine the coordinate points of the intake cylinder flow channel corresponding to the multiple groups of preset intake cylinder flow channel first parameters; based on the coordinate points of the intake cylinder flow channel corresponding to the multiple groups of preset intake cylinder flow channel first parameters respectively generate the intake cylinder flow channels corresponding to each group of preset intake cylinder flow channel first parameters; evaluate the uniformity of the incoming air of the intake cylinder flow channel corresponding to each group of preset intake cylinder flow channel first parameters, and select the optimal first parameter from the multiple groups of preset intake cylinder flow channel first parameters based on the evaluation results, and then use the optimal first parameter as the design parameter of the intake cylinder flow channel. The technical solution proposed in the present application can improve the phenomenon of uneven airflow at the compressor inlet of the lateral intake device, quickly generate the intake cylinder profile, and shorten the design time.

[0067] The following describes a method and system for determining design parameters of an intake cylinder flow passage of a lateral air intake device according to an embodiment of the present application with reference to the accompanying drawings.

[0068] Embodiment 1

[0069] Figure 1 Flow chart of a method for determining design parameters of an intake cylinder flow passage of a lateral intake device according to an embodiment of the present application, as shown in FIG. Figure 1 As shown, the method includes:

[0070] Step 1: Obtain the coordinates a of the upper control point of the inlet outer flow channel of the compressor connected to the inlet cylinder in the heavy-duty gas turbine, the coordinates b of the lower control point of the inlet outer flow channel, the coordinates c of the upper control point of the compressor inlet inner flow channel, the coordinates d of the lower control point of the compressor inlet inner flow channel, the axial coordinates xle of the support plate inlet position marking line, the axial coordinates xte of the support plate outlet position marking line, and multiple sets of preset first parameters of the inlet cylinder flow channel, such as Figure 2 shown.

[0071] In the disclosed embodiment, the first parameter of the intake cylinder flow passage includes:

[0072] The angle α1 between the inlet straight line section of the flow channel inside the intake cylinder and the axial direction, the angle α2 between the inlet straight line section of the flow channel outside the intake cylinder and the axial direction, the radial coordinate y_mid of the intersection of the support plate in the flow channel of the intake cylinder and the flow channel inside the intake cylinder, the axial length l ine1 of the outlet straight line section of the flow channel inside the intake cylinder, the axial distance l ine2 between the starting point of the inlet straight line section of the flow channel outside the intake cylinder and point a, and the ratio of the tangent circle area at the flow channel inlet to the tangent circle area at the outlet AR1; wherein point a is the control point on the inlet outer flow channel of the compressor connected to the intake cylinder;

[0073] like Figure 2 As shown, the inner flow channel is composed of a first straight line, a first circular arc and a second straight line in sequence;

[0074] The outer flow channel is composed of a third straight line and a second arc in sequence;

[0075] Wherein, the first straight line and the second arc are located at the outlet end of the intake cylinder;

[0076] The second straight line and the third straight line are located at the inlet end of the intake cylinder;

[0077] Two ends of the first circular arc are connected to the first straight line and the second straight line respectively;

[0078] The coordinate points of the intake cylinder flow channel include: 0 point coordinate, 1 point coordinate, 2 point coordinate, 3 point coordinate, 4 point coordinate, 5 point coordinate, 6 point coordinate;

[0079] Wherein, the 0 point coordinates are the coordinates of the control point on the flow channel inside the compressor inlet;

[0080] The coordinates of point 1 are the coordinates of the connection point 1 between the first straight line and the first circular arc;

[0081] The two-point coordinates are the coordinates of the connecting point 2 of the first circular arc and the second straight line;

[0082] The three-point coordinates are the coordinates of the second straight line at the inlet end 3 of the intake cylinder;

[0083] The four-point coordinates are the coordinates of the second arc at the inlet end 4 of the intake cylinder;

[0084] The five-point coordinates are the coordinates of the connection point 5 between the third straight line and the second circular arc;

[0085] The 6-point coordinates are the coordinates of control point 6 on the inlet outer flow channel of the compressor.

[0086] Step 2: According to the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and multiple sets of preset first parameters of the intake cylinder flow channel, respectively determine the coordinate points of the intake cylinder flow channel corresponding to the multiple sets of preset first parameters of the intake cylinder flow channel.

[0087] In the embodiment of the present disclosure, step 2 specifically includes:

[0088] Step 2.1: Determine the tangent angle α0 of point c at the compressor inlet according to the upper control point c of the compressor inlet inner flow channel and the lower control point d of the compressor inlet inner flow channel, and determine the tangent angle α3 of point a at the compressor inlet according to the upper control point a of the compressor inlet outer flow channel and the lower control point b of the compressor inlet outer flow channel;

[0089] Step 2.2: According to the tangent angle α0 of point c at the compressor inlet, the tangent angle α3 of point a at the compressor inlet, the axial coordinate xle of the support plate inlet position marking line, the axial coordinate xte of the support plate outlet position marking line, and multiple groups of preset first parameters of the intake cylinder flow channel, respectively determine the 1-point coordinate, 2-point coordinate, 3-point coordinate, 4-point coordinate, and 5-point coordinate of the intake cylinder flow channel corresponding to each group of preset first parameters of the intake cylinder flow channel;

[0090] Among them, the upper control point of the compressor inlet outer flow channel is control point a, the lower control point of the compressor inlet outer flow channel is control point b, the upper control point of the compressor inlet inner flow channel is control point c, and the lower control point of the compressor inlet inner flow channel is control point d.

[0091] In the embodiment of the present disclosure, the step 2.2 specifically includes:

[0092] 2.2.1 Determine the coordinates of the point corresponding to each set of preset first parameters of the intake cylinder flow channel according to the coordinates c of the control point on the compressor inlet inner flow channel, the tangent angle α0 of point c at the compressor inlet, and the axial length lin1 of the straight line segment at the outlet of the intake cylinder inner flow channel in each set of preset first parameters of the intake cylinder flow channel;

[0093] It should be noted that if Figure 3 As shown, point 0 is the same as point c, and point 6 is the same as point a;

[0094] The coordinates of control point a are (xa, ya), the coordinates of control point b are (xb, yb), the coordinates of control point c are (xc, yc), and the coordinates of control point d are (xd, yd);

[0095] α0=actan[(yd-yc) / (xd-xc)],α3=actan[(yb-ya) / (xb-xa)],x1=xc-line1*cos(α0),y1=yc-line1*sin(α0), and then we get the coordinates of the point (x1,y1)

[0096] 2.2.2 Determine the coordinates of the two points corresponding to each set of preset first parameters of the intake cylinder flow channel according to the coordinates a of the control point on the inlet external flow channel of the compressor, the radial coordinates y_mid of the intersection of the support plate in the intake cylinder flow channel and the inner flow channel of the intake cylinder in each set of preset first parameters of the intake cylinder flow channel, the axial coordinates xle of the support plate inlet position marking line, the axial coordinates xte of the support plate outlet position marking line and the tangent angle α0 of point c at the compressor inlet, the angle α1 between the inlet straight line segment of the inner flow channel of the intake cylinder and the axial direction in each set of preset first parameters of the intake cylinder flow channel, and the coordinates of the one point;

[0097] Among them, 2.2.2 includes:

[0098] Determine the radius r1 of the first arc according to the coordinates of the control point on the compressor inlet outer flow channel, the radial coordinates of the intersection of the support plate in the inlet cylinder flow channel and the inlet cylinder inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and the tangent angle α0 of point c at the compressor inlet;

[0099] The coordinates of the two points corresponding to each group of preset first parameters of the intake cylinder flow channel are determined according to the radius r1 of the first arc, the tangent angle α0 of point c at the compressor inlet, the angle α1 between the straight line segment of the intake cylinder flow channel inlet and the axial direction in each group of preset first parameters of the intake cylinder flow channel, and the coordinates of the one point corresponding to each group of preset first parameters of the intake cylinder flow channel.

[0100] It should be noted that if Figure 3 As shown, point 1 and point 2 are connected by an arc, and the radius r1 is: r1 = [(y1-y_mid)^2+[x1-(x le+xte) / 2]^2] / [2*(y_mid-y1)*cos(α0)-(x le+xte)*s in(α0)];

[0101] x2=x1-r1*sin(α0)-r1*sin(α1), y2=y1+r1*cos(α0)-r1*cos(α1), and then we get the coordinates of two points (x2, y2).

[0102] 2.2.3 Determine the first straight line equation corresponding to each set of preset first parameters of the intake cylinder flow channel between the two-point coordinates and the three-point coordinates according to the two-point coordinates and the angle α1 between the inlet straight line segment of the intake cylinder flow channel in each set of preset first parameters of the intake cylinder flow channel and the axial direction, and then perform iterative calculation based on the ratio of the tangent circle area at the flow channel inlet to the tangent circle area at the outlet in each set of preset first parameters of the intake cylinder flow channel AR1 and the first straight line equation corresponding to each set of preset first parameters of the intake cylinder flow channel, to obtain the three-point coordinates and the four-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel;

[0103] Among them, 2.2.3 includes:

[0104] Step F1: giving an initial value of the ratio DR1 of the diameter D1 of the tangent circle at the flow channel inlet to the diameter D0 of the tangent circle at the outlet, and determining the radius r2 of the tangent circle at the flow channel inlet based on the initial value;

[0105] Step F2: determining the horizontal coordinates of the four-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel according to the axial coordinate xle of the support plate inlet position mark line and the axial distance line2 between the starting point of the inlet straight line segment of the intake cylinder outer flow channel and point a in each set of preset first parameters of the intake cylinder flow channel;

[0106] Step F3: determining the abscissas of the three-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel according to the abscissas of the four-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel, the radius r2 of the tangent circle of the flow channel inlet, the angle α2 between the inlet straight line segment of the intake cylinder outer flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel, and the angle α1 between the inlet straight line segment of the intake cylinder inner flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel;

[0107] Step F4: determining the ordinates of the three points corresponding to each set of preset first parameters of the intake cylinder flow passage according to the abscissas of the three points corresponding to each set of preset first parameters of the intake cylinder flow passage, the angle α1 between the inlet straight line segment of the intake cylinder flow passage and the axial direction, and the coordinates of the lower control point of the inlet outer flow passage;

[0108] Step F5: determining the ordinates of the four points corresponding to each set of preset first parameters of the intake cylinder flow channel according to the ordinates of the three points corresponding to each set of preset first parameters of the intake cylinder flow channel, the radius r2 of the tangent circle of the flow channel inlet, the angle α1 between the inlet straight line segment of the inlet cylinder flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel, and the angle α2 between the inlet straight line segment of the inlet cylinder flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel;

[0109] Step F6: determining the area A1 of the flow channel inlet corresponding to each set of preset first parameters of the intake cylinder flow channel according to the ordinates of the three-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel, the ordinates of the four-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel, the angle α1 between the inlet straight line segment of the inlet cylinder flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel, and the angle α2 between the inlet straight line segment of the inlet cylinder flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel;

[0110] Step F7: determining a ratio AR of an area A1 of the flow channel inlet corresponding to each set of preset first parameters of the intake cylinder flow channel to an area of ​​a flow channel outlet corresponding to each set of preset first parameters of the intake cylinder flow channel;

[0111] Step F8: Determine whether the ratio of the area A1 of the channel inlet corresponding to each group of preset intake cylinder channel first parameters to the area of ​​the channel outlet corresponding to each group of preset intake cylinder channel first parameters, and the difference between the ratio AR1 of the tangent circle area of ​​the channel inlet to the tangent circle area of ​​the outlet in each group of preset intake cylinder channel first parameters is greater than 0.001; if so, add 0.001 to the ratio DR1 of the tangent circle diameter D1 of the channel inlet to the tangent circle diameter D0 of the outlet, and return to step F1 until the difference is less than or equal to 0.001.

[0112] It should be noted that if Figure 3 As shown, the formula of the straight line between point 2 and point 3 is known to be: y = -tan(α1)*x+y2+tan(α1)*x2;

[0113] The area A0 of the flow channel outlet can be obtained according to the input parameters: A0 = π*(ya^2-yc^2) / [cos(α3-α2) / 2]^2. The diameter of the tangent circle of the flow channel outlet is D0: D0 = ya-yc;

[0114] The following parameters need to be solved iteratively. First, the initial value of the ratio DR1 of the tangent circle diameter D1 at the flow channel inlet and the tangent circle diameter D0 at the outlet is given as 0.9, then:

[0115] D1=D0*DR1, the radius r2 of the tangent circle at the flow channel inlet is: r2=D1 / 2 / cos(α2-α1) / 2;

[0116] The slope k2 of the straight line between point 4 and point 5 is: k2 = -tan(α2);

[0117] It can be obtained that: x4 = x le-line2, x3 = x4-r2*s in(α2)-r2*s in(α1), y3 = -tan(α1)*x3+y2+tan(α1)*x2, y4 = y3+r2*cos(α1)+r2*cos(α2);

[0118] The area of ​​the flow channel inlet A1: A1 = π*(y4^2-y3^2) / [cos(α1 / 2+α2 / 2)]^2;

[0119] Then we can get an inlet and outlet area ratio AR under this ratio: AR = A1 / A0;

[0120] Compare AR with AR1. If the difference between AR and AR1 is greater than 0.001, increase the value of DR1 by 0.001 and return to the above calculation again until the absolute value of the difference between AR and AR1 is less than 0.001.

[0121] 2.2.4 Determine the coordinates of the five points corresponding to each group of preset first parameters of the intake cylinder flow channel based on the coordinates of the lower control point of the compressor inlet inner flow channel, the angle α2 between the inlet straight line segment of the intake cylinder outer flow channel and the axial direction corresponding to each group of preset first parameters of the intake cylinder flow channel, the tangent angle α3 at point a at the compressor inlet, and the coordinates a of the control point on the compressor inlet outer flow channel.

[0122] Among them, the above 2.2.4 includes:

[0123] Determine the straight line slope k2 between the four-point coordinates corresponding to each set of preset intake cylinder flow channel first parameters and the five-point coordinates corresponding to each set of preset intake cylinder flow channel first parameters based on the included angle α2 between the inlet straight line segment of the intake cylinder outer flow channel and the axial direction in each set of preset intake cylinder flow channel first parameters;

[0124] Determine the radius r3 of the second arc corresponding to each set of preset first parameters of the intake cylinder flow channel according to the straight line slope k2, the coordinates of the four points corresponding to each set of preset first parameters of the intake cylinder flow channel, the coordinates of the control points on the inlet outer flow channel of the compressor, the angle α2 between the inlet straight line segment of the intake cylinder outer flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel, and the tangent angle α3 of point a at the compressor inlet;

[0125] The coordinates of the five points corresponding to each group of preset first parameters of the intake cylinder flow channel are determined based on the coordinates of the control points on the inlet external flow channel of the compressor, the radius r3 corresponding to the second arc corresponding to each group of preset first parameters of the intake cylinder flow channel, the angle α2 between the inlet straight line segment of the intake cylinder external flow channel and the axial direction in each group of preset first parameters of the intake cylinder flow channel, and the tangent angle α3 at point a at the compressor inlet in each group of preset first parameters of the intake cylinder flow channel.

[0126] It should be noted that when the absolute value of the difference between AR and AR1 is less than 0.001, the calculation of the coordinates of the five points is performed.

[0127] The arc segment between point 5 and point 6 has a radius r3 of: r3 = (y4-k2*x4+k2*xa-ya) / [k2*(s in(α2)+s in(α3))-cos(α2)+s in(α3)];

[0128] Then the horizontal and vertical coordinates of point 5 are:

[0129] x5=xa-r3*s in(α3)-r3*s in(α2), y5=ya+r3*cos(α3)-r3*cos(α2).

[0130] Step 3: Based on the coordinate points of the intake cylinder flow passages corresponding to the plurality of sets of preset first parameters of the intake cylinder flow passages, respectively generate intake cylinder flow passages corresponding to the respective sets of preset first parameters of the intake cylinder flow passages.

[0131] It should be noted that, between every two points, a plurality of points are uniformly selected for fitting according to their connection mode to obtain the corresponding profile line.

[0132] Step 4: Evaluate the uniformity of the incoming air of the intake cylinder runner corresponding to each group of preset first parameters of the intake cylinder runner, and select the optimal first parameter from the multiple groups of preset first parameters of the intake cylinder runner based on the evaluation results, and then use the optimal first parameter as the design parameter of the intake cylinder runner.

[0133] The method for determining design parameters of the intake cylinder flow passage of the lateral intake device proposed in this embodiment has the following advantages:

[0134] 1. Can improve the uneven airflow at the compressor inlet of the lateral air intake device

[0135] 2. It can realize the rapid generation of gas turbine inlet cylinder profiles and shorten the design time

[0136] 3. The gas turbine inlet cylinder profile can be parameterized with a high degree of freedom, making it easy to adapt to gas turbine compressor inlets of different sizes.

[0137] In summary, the method for determining the design parameters of the intake cylinder flow passage of a lateral air intake device proposed in this embodiment can improve the uneven airflow at the compressor inlet of the lateral air intake device, quickly generate the intake cylinder profile, and shorten the design time.

[0138] Embodiment 2

[0139] Figure 4FIG. 1 is a structural diagram of a system for determining design parameters of an intake cylinder flow passage of a lateral intake device according to an embodiment of the present application. Figure 4 As shown, the system comprises:

[0140] An acquisition module 100 is used to acquire the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line, and multiple sets of preset first parameters of the intake cylinder flow channel;

[0141] The determination module 200 is used to determine the coordinate points of the intake cylinder flow channel corresponding to the plurality of preset first parameters of the intake cylinder flow channel according to the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and the plurality of preset first parameters of the intake cylinder flow channel;

[0142] A generating module 300, configured to generate intake cylinder flow channels corresponding to each set of preset intake cylinder flow channel first parameters based on each coordinate point of the intake cylinder flow channels corresponding to the plurality of sets of preset intake cylinder flow channel first parameters;

[0143] The optimization module 400 is used to evaluate the uniformity of the incoming air of the intake cylinder runner corresponding to each group of preset first parameters of the intake cylinder runner, and select the optimal first parameter from the multiple groups of preset first parameters of the intake cylinder runner based on the evaluation results, and then use the optimal first parameter as the design parameter of the intake cylinder runner.

[0144] Wherein, the first parameter of the intake cylinder flow passage includes:

[0145] The angle between the inlet straight section of the flow channel inside the intake cylinder and the axial direction, the angle between the inlet straight section of the flow channel outside the intake cylinder and the axial direction, the radial coordinates of the intersection of the support plate in the flow channel of the intake cylinder and the flow channel inside the intake cylinder, the axial length of the outlet straight section of the flow channel inside the intake cylinder, the axial distance between the starting point of the inlet straight section of the flow channel outside the intake cylinder and point a, and the ratio of the tangent circle area at the flow channel inlet to the tangent circle area at the outlet; point a is the control point on the inlet external flow channel of the compressor connected to the intake cylinder;

[0146] The inner flow channel is composed of a first straight line, a first circular arc, and a second straight line in sequence;

[0147] The outer flow channel is composed of a third straight line and a second arc in sequence;

[0148] Wherein, the first straight line and the second arc are located at the outlet end of the intake cylinder;

[0149] The second straight line and the third straight line are located at the inlet end of the intake cylinder;

[0150] Two ends of the first circular arc are connected to the first straight line and the second straight line respectively;

[0151] The coordinate points of the intake cylinder flow channel include: 0 point coordinate, 1 point coordinate, 2 point coordinate, 3 point coordinate, 4 point coordinate, 5 point coordinate, 6 point coordinate;

[0152] Wherein, the 0 point coordinates are the coordinates of the control point on the flow channel inside the compressor inlet;

[0153] The coordinates of the point 1 are the coordinates of the connection point between the first straight line and the first circular arc;

[0154] The two-point coordinates are the coordinates of the connecting point between the first circular arc and the second straight line;

[0155] The three-point coordinates are the coordinates of the second straight line at the inlet end of the intake cylinder;

[0156] The four-point coordinates are the coordinates of the second arc at the inlet end of the intake cylinder;

[0157] The five-point coordinates are the coordinates of the connection points between the third straight line and the second circular arc;

[0158] The six-point coordinates are the coordinates of the control points on the inlet outer flow channel of the compressor.

[0159] In the embodiment of the present disclosure, the determination module 200 is further used to:

[0160] Determine the tangent angle of the point at the compressor inlet according to the upper control point of the compressor inlet inner flow channel and the lower control point of the compressor inlet inner flow channel, and determine the tangent angle of the point at the compressor inlet according to the upper control point of the compressor inlet outer flow channel and the lower control point of the compressor inlet outer flow channel;

[0161] According to the tangent angle of point c at the compressor inlet, the tangent angle of point a at the compressor inlet, the axial coordinate of the support plate inlet position marking line, the axial coordinate of the support plate outlet position marking line and multiple groups of preset first parameters of the intake cylinder flow channel, respectively determine the 1-point coordinate, 2-point coordinate, 3-point coordinate, 4-point coordinate and 5-point coordinate of the intake cylinder flow channel corresponding to each group of preset first parameters of the intake cylinder flow channel;

[0162] Among them, the upper control point of the compressor inlet outer flow channel is the control point, the lower control point of the compressor inlet outer flow channel is the control point, the upper control point of the compressor inlet inner flow channel is the control point, and the lower control point of the compressor inlet inner flow channel is the control point.

[0163] Furthermore, the determining module 200 is further configured to:

[0164] Determine the coordinates of the one point corresponding to each set of preset first parameters of the intake cylinder flow channel according to the coordinates of the control point on the compressor inlet flow channel, the tangent angle of the point at the compressor inlet, and the axial length of the straight line segment at the outlet of the intake cylinder flow channel in each set of preset first parameters of the intake cylinder flow channel;

[0165] Determine the coordinates of the two points corresponding to each set of preset first parameters of the intake cylinder flow channel according to the coordinates of the control points on the inlet outer flow channel of the compressor, the radial coordinates of the intersection of the support plate in the intake cylinder flow channel and the inner flow channel of the intake cylinder in each set of preset first parameters of the intake cylinder flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and the tangent angle of point c at the compressor inlet, the angle between the inlet straight line segment of the inner flow channel of the intake cylinder in each set of preset first parameters of the intake cylinder flow channel and the axial direction, and the coordinates of the one point;

[0166] Determine the first straight line equation corresponding to each set of preset intake cylinder runner first parameters between the two-point coordinates and the three-point coordinates according to the two-point coordinates and the angle between the inlet straight line segment of the intake cylinder runner in each set of preset intake cylinder runner first parameters and the axial direction, and then perform iterative calculation based on the ratio of the tangent circle area of ​​the runner inlet to the tangent circle area of ​​the outlet in each set of preset intake cylinder runner first parameters and the first straight line equation corresponding to each set of preset intake cylinder runner first parameters, to obtain the three-point coordinates and the four-point coordinates corresponding to each set of preset intake cylinder runner first parameters;

[0167] The coordinates of the five points corresponding to each group of preset first parameters of the intake cylinder flow channel are determined according to the coordinates of the control points on the compressor inlet inner flow channel, the angle between the inlet straight line segment of the intake cylinder outer flow channel and the axial direction corresponding to each group of preset first parameters of the intake cylinder flow channel, the tangent angle of point a at the compressor inlet, and the coordinates of the control points on the compressor inlet outer flow channel.

[0168] Furthermore, the determining module 200 is further configured to:

[0169] Determine the radius of the first arc according to the coordinates of the control point on the compressor inlet outer flow channel, the radial coordinates of the intersection of the support plate in the inlet cylinder flow channel and the inlet cylinder inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and the tangent angle of point c at the compressor inlet;

[0170] The two-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow channel are determined according to the radius of the first arc, the tangent angle of point c at the compressor inlet, the angle between the straight line segment of the intake cylinder flow channel inlet and the axial direction in each group of preset first parameters of the intake cylinder flow channel, and the one-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow channel.

[0171] Furthermore, the determining module 200 is further configured to:

[0172] Step E1: giving an initial value of the ratio of the tangent circle diameter at the flow channel inlet to the tangent circle diameter at the outlet, and determining the radius of the tangent circle at the flow channel inlet based on the initial value;

[0173] Step E2: determining the horizontal coordinates of the four-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel according to the axial coordinates of the support plate inlet position marking line and the axial distance between the starting point of the intake cylinder outer flow channel inlet straight line segment and point a in each set of preset first parameters of the intake cylinder flow channel;

[0174] Step E3: determining the horizontal coordinates of the three-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel according to the horizontal coordinates of the four-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel, the radius of the tangent circle of the flow channel inlet, the angle between the inlet straight line segment of the intake cylinder outer flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel, and the angle between the inlet straight line segment of the intake cylinder inner flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel;

[0175] Step E4: determining the ordinates of the 3-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow passage according to the abscissas of the 3-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow passage, the angle between the inlet straight line segment of the intake cylinder inner flow passage and the axial direction, and the coordinates of the lower control point of the inlet outer flow passage;

[0176] Step E5: determining the ordinates of the four points corresponding to each set of preset first parameters of the intake cylinder flow channel according to the ordinates of the three points corresponding to each set of preset first parameters of the intake cylinder flow channel, the radius of the tangent circle of the flow channel inlet, the angle between the inlet straight line segment of the inlet cylinder flow channel in each set of preset first parameters of the intake cylinder flow channel and the axial direction, and the angle between the inlet straight line segment of the inlet cylinder flow channel in each set of preset first parameters of the intake cylinder flow channel and the axial direction;

[0177] Step E6: determining the area of ​​the flow channel inlet corresponding to each set of preset first parameters of the intake cylinder flow channel according to the ordinates of the three-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel, the ordinates of the four-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel, the angle between the inlet straight line segment of the inlet cylinder flow channel in each set of preset first parameters of the intake cylinder flow channel and the axial direction, and the angle between the inlet straight line segment of the inlet cylinder flow channel in each set of preset first parameters of the intake cylinder flow channel and the axial direction;

[0178] Step E7: determining a ratio AR of an area of ​​the flow channel inlet corresponding to each set of preset first parameters of the intake cylinder flow channel to an area of ​​the flow channel outlet corresponding to each set of preset first parameters of the intake cylinder flow channel;

[0179] Step E8: Determine whether the ratio of the area of ​​the channel inlet corresponding to each group of preset intake cylinder channel first parameters to the area of ​​the channel outlet corresponding to each group of preset intake cylinder channel first parameters and the difference between the ratio of the tangent circle area of ​​the channel inlet to the tangent circle area of ​​the outlet in each group of preset intake cylinder channel first parameters is greater than 0.001; if so, add 0.001 to the ratio of the tangent circle diameter of the channel inlet to the tangent circle diameter of the outlet, and return to step E1 until the difference is less than or equal to 0.001.

[0180] Furthermore, the determining module 200 is further configured to:

[0181] Determine the slope of the straight line between the four-point coordinates corresponding to each set of preset intake cylinder flow channel first parameters and the five-point coordinates corresponding to each set of preset intake cylinder flow channel first parameters based on the angle between the inlet straight line segment of the intake cylinder outer flow channel in each set of preset intake cylinder flow channel first parameters and the axial direction;

[0182] Determine the radius of the second arc corresponding to each set of preset first parameters of the intake cylinder flow channel according to the slope of the straight line, the coordinates of the four points corresponding to each set of preset first parameters of the intake cylinder flow channel, the coordinates of the control point on the inlet external flow channel of the compressor, the angle between the inlet straight line segment of the intake cylinder external flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel, and the tangent angle of point a at the compressor inlet;

[0183] The coordinates of the five points corresponding to each group of preset first parameters of the intake cylinder flow channel are determined based on the coordinates of the control points on the inlet external flow channel of the compressor, the radius corresponding to the second arc corresponding to each group of preset first parameters of the intake cylinder flow channel, the angle between the inlet straight line segment of the intake cylinder external flow channel and the axial direction in each group of preset first parameters of the intake cylinder flow channel, and the tangent angle of point a at the compressor inlet in each group of preset first parameters of the intake cylinder flow channel.

[0184] In summary, the system for determining the design parameters of the intake cylinder flow passage of a lateral air intake device proposed in this embodiment can improve the uneven airflow at the compressor inlet of the lateral air intake device, quickly generate the intake cylinder profile, and shorten the design time.

[0185] Embodiment 3

[0186] In order to implement the above embodiments, the present disclosure further proposes an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method described in Embodiment 1 is implemented.

[0187] Embodiment 4

[0188] In order to implement the above embodiments, the present disclosure further proposes a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the method described in the first embodiment is implemented.

[0189] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0190] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0191] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for determining design parameters of an intake cylinder flow passage of a lateral intake device, characterized in that: The method comprises: Obtaining the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and multiple sets of preset first parameters of the intake cylinder flow channel; According to the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the inlet cylinder in the heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and the multiple groups of preset first parameters of the inlet cylinder flow channel, the coordinate points of the inlet cylinder flow channel corresponding to the multiple groups of preset first parameters of the inlet cylinder flow channel are determined respectively; Generate intake cylinder flow channels corresponding to each set of preset intake cylinder flow channel first parameters based on each coordinate point of the intake cylinder flow channels corresponding to the plurality of sets of preset intake cylinder flow channel first parameters; The uniformity of the incoming air of the intake cylinder runner corresponding to each group of preset first parameters of the intake cylinder runner is evaluated, and based on the evaluation results, the optimal first parameter is selected from the multiple groups of preset first parameters of the intake cylinder runner, and then the optimal first parameter is used as the design parameter of the intake cylinder runner.

2. The method according to claim 1, characterized in that The first parameters of the intake cylinder flow passage include: The angle between the inlet straight section of the flow channel inside the intake cylinder and the axial direction, the angle between the inlet straight section of the flow channel outside the intake cylinder and the axial direction, the radial coordinates of the intersection of the support plate in the flow channel of the intake cylinder and the flow channel inside the intake cylinder, the axial length of the outlet straight section of the flow channel inside the intake cylinder, the axial distance between the starting point of the inlet straight section of the flow channel outside the intake cylinder and point a, and the ratio of the tangent circle area at the flow channel inlet to the tangent circle area at the outlet; point a is the control point on the inlet external flow channel of the compressor connected to the intake cylinder; The inner flow channel is composed of a first straight line, a first circular arc, and a second straight line in sequence; The outer flow channel is composed of a third straight line and a second arc in sequence; Wherein, the first straight line and the second arc are located at the outlet end of the intake cylinder; The second straight line and the third straight line are located at the inlet end of the intake cylinder; Two ends of the first circular arc are connected to the first straight line and the second straight line respectively; The coordinate points of the intake cylinder flow channel include: 0 point coordinate, 1 point coordinate, 2 point coordinate, 3 point coordinate, 4 point coordinate, 5 point coordinate, 6 point coordinate; Wherein, the 0 point coordinates are the coordinates of the control point on the flow channel inside the compressor inlet; The 1-point coordinate is the coordinate of the connection point between the first straight line and the first circular arc; The two-point coordinates are the coordinates of the connecting point between the first circular arc and the second straight line; The three-point coordinates are the coordinates of the second straight line at the inlet end of the intake cylinder; The four-point coordinates are the coordinates of the second arc at the inlet end of the intake cylinder; The five-point coordinates are the coordinates of the connection points between the third straight line and the second circular arc; The six-point coordinates are the coordinates of the control points on the inlet outer flow channel of the compressor.

3. The method according to claim 2, characterized in that The method of determining the coordinate points of the intake cylinder flow channel corresponding to the plurality of sets of preset first parameters of the intake cylinder flow channel respectively according to the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and the plurality of sets of preset first parameters of the intake cylinder flow channel, includes: The tangent angle of point c at the compressor inlet is determined according to the upper control point of the compressor inlet inner flow passage and the lower control point of the compressor inlet inner flow passage, and the tangent angle of point a at the compressor inlet is determined according to the upper control point of the compressor inlet outer flow passage and the lower control point of the compressor inlet outer flow passage; According to the tangent angle of point c at the compressor inlet, the tangent angle of point a at the compressor inlet, the axial coordinate of the support plate inlet position marking line, the axial coordinate of the support plate outlet position marking line and multiple groups of preset first parameters of the intake cylinder flow channel, respectively determine the 1-point coordinate, 2-point coordinate, 3-point coordinate, 4-point coordinate and 5-point coordinate of the intake cylinder flow channel corresponding to each group of preset first parameters of the intake cylinder flow channel; Among them, the upper control point of the compressor inlet outer flow channel is control point a, the lower control point of the compressor inlet outer flow channel is control point b, the upper control point of the compressor inlet inner flow channel is control point c, and the lower control point of the compressor inlet inner flow channel is control point d.

4. The method according to claim 3, characterized in that According to the tangent angle of point c at the compressor inlet, the tangent angle of point a at the compressor inlet, the axial coordinate of the support plate inlet position marking line, the axial coordinate of the support plate outlet position marking line and multiple groups of preset intake cylinder flow channel first parameters, the 1-point coordinate, 2-point coordinate, 3-point coordinate, 4-point coordinate and 5-point coordinate of the intake cylinder flow channel corresponding to each group of preset intake cylinder flow channel first parameters are determined respectively, including: Determine the coordinates of the point corresponding to each set of preset first parameters of the intake cylinder flow channel according to the coordinates of the control point on the compressor inlet inner flow channel, the tangent angle of point c at the compressor inlet, and the axial length of the straight line segment at the outlet of the intake cylinder inner flow channel in each set of preset first parameters of the intake cylinder flow channel; Determine the coordinates of the two points corresponding to each set of preset first parameters of the intake cylinder flow channel according to the coordinates of the control points on the inlet outer flow channel of the compressor, the radial coordinates of the intersection of the support plate in the intake cylinder flow channel and the inner flow channel of the intake cylinder in each set of preset first parameters of the intake cylinder flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and the tangent angle of point c at the compressor inlet, the angle between the inlet straight line segment of the inner flow channel of the intake cylinder in each set of preset first parameters of the intake cylinder flow channel and the axial direction, and the coordinates of the one point; Determine the first straight line equation corresponding to each set of preset intake cylinder runner first parameters between the two-point coordinates and the three-point coordinates according to the two-point coordinates and the angle between the inlet straight line segment of the intake cylinder runner in each set of preset intake cylinder runner first parameters and the axial direction, and then perform iterative calculation based on the ratio of the tangent circle area of ​​the runner inlet to the tangent circle area of ​​the outlet in each set of preset intake cylinder runner first parameters and the first straight line equation corresponding to each set of preset intake cylinder runner first parameters, to obtain the three-point coordinates and the four-point coordinates corresponding to each set of preset intake cylinder runner first parameters; The coordinates of the five points corresponding to each group of preset first parameters of the intake cylinder flow channel are determined according to the coordinates of the control points on the compressor inlet inner flow channel, the angle between the inlet straight line segment of the intake cylinder outer flow channel and the axial direction corresponding to each group of preset first parameters of the intake cylinder flow channel, the tangent angle of point a at the compressor inlet, and the coordinates of the control points on the compressor inlet outer flow channel.

5. The method according to claim 4, characterized in that The two-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel are determined according to the coordinates of the control point on the inlet outer flow channel of the compressor, the radial coordinates of the intersection of the support plate in the intake cylinder flow channel and the inner flow channel of the intake cylinder in each set of preset first parameters of the intake cylinder flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and the tangent angle of point c at the compressor inlet, the angle between the inlet straight line segment of the inner flow channel of the intake cylinder in each set of preset first parameters of the intake cylinder flow channel and the axial direction, and the one-point coordinates, including: Determine the radius of the first arc according to the coordinates of the control point on the compressor inlet outer flow channel, the radial coordinates of the intersection of the support plate in the inlet cylinder flow channel and the inlet cylinder inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line and the tangent angle of point c at the compressor inlet; The two-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow channel are determined according to the radius of the first arc, the tangent angle of point c at the compressor inlet, the angle between the straight line segment of the intake cylinder flow channel inlet and the axial direction in each group of preset first parameters of the intake cylinder flow channel, and the one-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow channel.

6. The method according to claim 4, characterized in that The iterative calculation is performed based on the ratio of the tangent circle area at the flow channel inlet to the tangent circle area at the outlet in each set of preset intake cylinder flow channel first parameters and the first straight line equation corresponding to each set of preset intake cylinder flow channel first parameters to obtain the three-point coordinates and the four-point coordinates corresponding to each set of preset intake cylinder flow channel first parameters, including: Step F1: giving an initial value of the ratio DR1 of the diameter D1 of the tangent circle at the flow channel inlet to the diameter D0 of the tangent circle at the outlet, and determining the radius of the tangent circle at the flow channel inlet based on the initial value; Step F2: determining the horizontal coordinates of the four-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel according to the axial coordinates of the support plate inlet position marking line and the axial distance between the starting point of the inlet straight line segment of the intake cylinder outer flow channel and point a in each set of preset first parameters of the intake cylinder flow channel; Step F3: determining the abscissas of the three-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel according to the abscissas of the four-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel, the radius of the tangent circle of the flow channel inlet, the angle between the inlet straight line segment of the intake cylinder outer flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel, and the angle between the inlet straight line segment of the intake cylinder inner flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel; Step F4: determining the ordinates of the three points corresponding to each set of preset first parameters of the intake cylinder flow passage according to the abscissas of the three points corresponding to each set of preset first parameters of the intake cylinder flow passage, the angle between the inlet straight line segment of the intake cylinder inner flow passage and the axial direction, and the coordinates of the lower control point of the inlet outer flow passage; Step F5: determining the ordinates of the four points corresponding to each set of preset first parameters of the intake cylinder flow channel according to the ordinates of the three points corresponding to each set of preset first parameters of the intake cylinder flow channel, the radius of the tangent circle of the flow channel inlet, the angle between the inlet straight line segment of the inlet cylinder flow channel in each set of preset first parameters of the intake cylinder flow channel and the axial direction, and the angle between the inlet straight line segment of the inlet cylinder flow channel in each set of preset first parameters of the intake cylinder flow channel and the axial direction; Step F6: determining the area of ​​the flow channel inlet corresponding to each set of preset first parameters of the intake cylinder flow channel according to the ordinates of the three-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel, the ordinates of the four-point coordinates corresponding to each set of preset first parameters of the intake cylinder flow channel, the angle between the inlet straight line segment of the inlet cylinder flow channel in each set of preset first parameters of the intake cylinder flow channel and the axial direction, and the angle between the inlet straight line segment of the inlet cylinder flow channel in each set of preset first parameters of the intake cylinder flow channel and the axial direction; Step F7: determining the ratio of the area of ​​the flow channel inlet corresponding to each set of preset intake cylinder flow channel first parameters to the area of ​​the flow channel outlet corresponding to each set of preset intake cylinder flow channel first parameters; Step F8: Determine whether the ratio of the area of ​​the channel inlet corresponding to each group of preset intake cylinder channel first parameters to the area of ​​the channel outlet corresponding to each group of preset intake cylinder channel first parameters and the difference between the ratio of the tangent circle area of ​​the channel inlet to the tangent circle area of ​​the outlet in each group of preset intake cylinder channel first parameters is greater than 0.001; if so, add 0.001 to the ratio of the tangent circle diameter of the channel inlet to the tangent circle diameter of the outlet, and return to step F1 until the difference is less than or equal to 0.

001.

7. The method according to claim 6, characterized in that The coordinates of the five points corresponding to each group of preset first parameters of the intake cylinder flow channel are determined according to the coordinates of the lower control point of the compressor inlet inner flow channel, the angle between the inlet straight line segment of the intake cylinder outer flow channel and the axial direction corresponding to each group of preset first parameters of the intake cylinder flow channel, the tangent angle of point a at the compressor inlet, and the coordinates of the control point a on the compressor inlet outer flow channel, including: Determine the slope of the straight line between the four-point coordinates corresponding to each set of preset intake cylinder flow channel first parameters and the five-point coordinates corresponding to each set of preset intake cylinder flow channel first parameters based on the angle α2 between the inlet straight line segment of the intake cylinder outer flow channel and the axial direction in each set of preset intake cylinder flow channel first parameters; Determine the radius of the second arc corresponding to each set of preset first parameters of the intake cylinder flow channel according to the slope of the straight line, the coordinates of the four points corresponding to each set of preset first parameters of the intake cylinder flow channel, the coordinates of the control point on the inlet external flow channel of the compressor, the angle between the inlet straight line segment of the intake cylinder external flow channel and the axial direction in each set of preset first parameters of the intake cylinder flow channel, and the tangent angle of point a at the compressor inlet; The coordinates of the five points corresponding to each group of preset first parameters of the intake cylinder flow channel are determined based on the coordinates of the control points on the inlet external flow channel of the compressor, the radius corresponding to the second arc corresponding to each group of preset first parameters of the intake cylinder flow channel, the angle between the inlet straight line segment of the intake cylinder external flow channel and the axial direction in each group of preset first parameters of the intake cylinder flow channel, and the tangent angle of point a at the compressor inlet in each group of preset first parameters of the intake cylinder flow channel.

8. A system for determining design parameters of an intake cylinder flow passage of a lateral intake device, characterized in that: The system comprises: An acquisition module is used to acquire the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line, and multiple sets of preset first parameters of the intake cylinder flow channel; A determination module, for respectively determining the coordinate points of the intake cylinder flow channel corresponding to the plurality of sets of preset first parameters of the intake cylinder flow channel according to the coordinates of the upper control point of the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the lower control point of the inlet outer flow channel, the coordinates of the upper control point of the compressor inlet inner flow channel, the coordinates of the lower control point of the compressor inlet inner flow channel, the axial coordinates of the support plate inlet position marking line, the axial coordinates of the support plate outlet position marking line, and the plurality of sets of preset first parameters of the intake cylinder flow channel; A generating module, configured to generate intake cylinder flow channels corresponding to each set of preset first parameters of the intake cylinder flow channels based on each coordinate point of the intake cylinder flow channels corresponding to the plurality of sets of preset first parameters of the intake cylinder flow channels; The optimization module is used to evaluate the uniformity of the incoming air of the intake cylinder runner corresponding to each group of preset first parameters of the intake cylinder runner, and select the optimal first parameter from the multiple groups of preset first parameters of the intake cylinder runner based on the evaluation results, and then use the optimal first parameter as the design parameter of the intake cylinder runner.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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