A method and system for determining design parameters of an air intake cylinder runner of a side air intake device

Abstract

The application provides a method and system for determining design parameters of an air inlet cylinder flow channel of a side air inlet device. The method comprises the following steps: obtaining coordinates of upper and lower control points on an inlet outer flow channel of a compressor connected with the air inlet cylinder in a heavy gas turbine, coordinates of upper and lower control points on an inlet inner flow channel of the compressor, axial coordinates of a position mark line of an inlet of a support plate, axial coordinates of a position mark line of an outlet of the support plate, and a plurality of groups of preset first parameters of the air inlet cylinder flow channel; determining each coordinate point of the air inlet cylinder flow channel corresponding to each group of the preset first parameters of the air inlet cylinder flow channel; generating the air inlet cylinder flow channel corresponding to each group of the preset first parameters of the air inlet cylinder flow channel; evaluating uniformity of incoming air flow of the air inlet cylinder flow channel, screening the optimal first parameter, and then taking the optimal first parameter as the design parameter of the air inlet cylinder flow channel. The technical scheme can improve the phenomenon that the air inlet device causes non-uniformity of air flow at the inlet of the compressor, and can quickly generate the air inlet cylinder profile line and shorten the design time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heavy-duty gas turbine design, and particularly relates to a method and system for determining design parameters of an air inlet cylinder flow passage of a lateral air inlet device. BACKGROUND

[0002] The air inlet system of a heavy-duty gas turbine is generally a lateral air inlet. After being filtered by the air inlet system, the air is turned by 90 degrees to enter an air inlet chamber of a compressor. The turning of the air flow causes the inlet air flow at the front end of the compressor to be circumferentially uneven. The air flow on the outside of the flow passage is higher in speed due to the centripetal force, and the air flow on the inside is lower in speed. The compressor of the gas turbine is very sensitive to the quality of the inlet air flow. The unevenness of the air flow can easily cause the compressor to enter a stall state, and in severe cases, can even cause a surge, which seriously affects the safe operation of the compressor. In particular, in the starting state, the compressor is more sensitive to the uniformity of the air flow. If the air flow at the outlet of the lateral air inlet device is not processed, it can cause the gas turbine to fail to start or even be damaged.

[0003] At present, there is no fixed standard for the profile design of the main gas turbine cylinder flow passage. Generally, a single or multi-arc method is used for modeling. In the design process, the dimensions of the inner and outer flow passages are limited. However, this modeling method has two problems. First, the configuration of the inner and outer flow passage profiles needs to be iteratively designed repeatedly to meet the design requirements. Second, there is no fixed profile structure form, and the degree of freedom is uncontrollable, which causes the air inlet cylinder profile to be unable to be quickly generated, the design time is long, and the uniformity of the air flow cannot be guaranteed. Therefore, there is an urgent need to propose a scheme with short design time, controllable degree of freedom, and good air flow uniformity. SUMMARY

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

[0005] The first aspect of the present application provides a method for determining design parameters of an air inlet cylinder flow passage of a lateral air inlet device, which comprises the following steps.

[0006] Obtaining the coordinates of control points on an inlet outer flow passage of a compressor connected to the air inlet cylinder in a heavy-duty gas turbine, the coordinates of control points on an inlet inner flow passage of the compressor, the axial coordinates of a position mark of an inlet of a branch plate, the axial coordinates of a position mark of an outlet of the branch plate, and a plurality of groups of preset first parameters of the air inlet cylinder flow passage.

[0007] The multiple sets of preset first parameters of the inlet cylinder flow channel are determined according to the coordinates of control points on an inlet outer flow channel of a compressor connected with the inlet cylinder, the coordinates of control points on an inlet inner flow channel of the compressor, the coordinates of control points on an outlet inner flow channel of the compressor, the axial coordinates of a position mark line of an inlet of a vane, the axial coordinates of a position mark line of an outlet of the vane, and multiple sets of preset first parameters of the inlet cylinder flow channel.

[0008] The inlet cylinder flow channels corresponding to the multiple sets of preset first parameters of the inlet cylinder flow channel are respectively generated based on the multiple sets of preset first parameters of the inlet cylinder flow channel.

[0009] The uniformity of the inlet flow of the inlet cylinder flow channels corresponding to the multiple sets of preset first parameters of the inlet cylinder flow channel is evaluated, and the optimal first parameter is selected from the multiple sets of preset first parameters of the inlet cylinder flow channel based on the evaluation result, and the optimal first parameter is taken as the design parameter of the inlet cylinder flow channel.

[0010] Preferably, the first parameter of the inlet cylinder flow channel comprises:

[0011] an angle between an inlet straight line segment of the inlet inner flow channel and an axial direction, an angle between an inlet straight line segment of the inlet outer flow channel and the axial direction, a radial coordinate of an intersection point of the vane and the inlet inner flow channel of the inlet cylinder, an axial length of an outlet straight line segment of the inlet inner flow channel, an axial distance between a starting point of the inlet straight line segment of the inlet outer flow channel and a point a, and a ratio of a tangent circle area at an inlet of the flow channel to a tangent circle area at an outlet of the flow channel, wherein the point a is a control point on the inlet outer flow channel of the compressor connected with the inlet cylinder.

[0012] The inner flow channel comprises a first straight line, a first circular arc, and a second straight line in sequence.

[0013] The outer flow channel comprises a third straight line and a second circular arc in sequence.

[0014] The first straight line and the second circular arc are located at an outlet end of the inlet cylinder.

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

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

[0017] The multiple coordinates of the inlet cylinder flow channel comprise coordinates of 0, 1, 2, 3, 4, 5, and 6.

[0018] The coordinate of 0 is the coordinate of the control point on the inlet inner flow channel of the compressor.

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

[0020] The 2-point coordinate is the coordinate of the connecting point of the first circular arc and the second straight line segment;

[0021] The 3-point coordinate is the coordinate of the second straight line segment at the inlet end of the intake cylinder;

[0022] The 4-point coordinate is the coordinate of the second circular arc at the inlet end of the intake cylinder;

[0023] The 5-point coordinate is the coordinate of the connecting point of the third straight line and the second circular arc;

[0024] The 6-point coordinate is the coordinate of the control point on the inlet outer flow passage of the compressor.

[0025] Further, the method for determining the coordinate points of the intake cylinder flow passage corresponding to each group of preset intake cylinder flow passage first parameters according to the control point coordinate on the inlet outer flow passage of the compressor connected with the intake cylinder, the control point coordinate on the inlet outer flow passage, the control point coordinate on the inlet inner flow passage of the compressor, the control point coordinate on the inlet inner flow passage of the compressor, the axial coordinate of the shroud plate inlet position mark line, the axial coordinate of the shroud plate outlet position mark line, and the plurality of groups of preset intake cylinder flow passage first parameters comprises:

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

[0027] The 1-point coordinate, the 2-point coordinate, the 3-point coordinate, the 4-point coordinate, and the 5-point coordinate of the intake cylinder flow passage corresponding to each group of preset intake cylinder flow passage first parameters are determined according to the tangent angle of point c at the inlet of the compressor, the tangent angle of point a at the inlet of the compressor, the axial coordinate of the shroud plate inlet position mark line, the axial coordinate of the shroud plate outlet position mark line, and the plurality of groups of preset intake cylinder flow passage first parameters;

[0028] The control point on the inlet outer flow passage of the compressor is point a, the control point on the inlet outer flow passage of the compressor is point b, the control point on the inlet inner flow passage of the compressor is point c, and the control point on the inlet inner flow passage of the compressor is point d.

[0029] Further, the 1-point coordinate, the 2-point coordinate, the 3-point coordinate, the 4-point coordinate and the 5-point coordinate of the intake cylinder flow passage corresponding to each group of preset intake cylinder flow passage first parameters are determined according to the tangent angle of the point c at the compressor inlet, the tangent angle of the point a at the compressor inlet, the axial coordinate of the support plate inlet position mark line, the axial coordinate of the support plate outlet position mark line and the plurality of groups of preset intake cylinder flow passage first parameters, respectively, including:

[0030] The 1-point coordinate corresponding to each group of preset intake cylinder flow passage first parameters is determined according to the control point coordinate on the inner flow passage of the compressor inlet, the tangent angle of the point c at the compressor inlet and the axial length of the inner flow passage outlet straight line segment in the intake cylinder flow passage first parameters.

[0031] The 2-point coordinate corresponding to each group of preset intake cylinder flow passage first parameters is determined according to the control point coordinate on the outer flow passage of the compressor inlet, the radial coordinate of the intersection of the support plate and the inner flow passage of the intake cylinder in the intake cylinder flow passage first parameters, the axial coordinate of the support plate inlet position mark line, the axial coordinate of the support plate outlet position mark line, the tangent angle of the point c at the compressor inlet, the angle between the inner flow passage inlet straight line segment and the axial direction in the intake cylinder flow passage first parameters and the 1-point coordinate.

[0032] The first straight line equation corresponding to each group of preset intake cylinder flow passage first parameters between the 2-point coordinate and the 3-point coordinate is determined according to the 2-point coordinate and the angle between the inner flow passage inlet straight line segment and the axial direction in the intake cylinder flow passage first parameters, and then the 3-point coordinate and the 4-point coordinate corresponding to each group of preset intake cylinder flow passage first parameters are obtained through iterative calculation based on the ratio of the tangent circle area of the flow passage inlet to the tangent circle area of the flow passage outlet in the intake cylinder flow passage first parameters and the first straight line equation corresponding to each group of preset intake cylinder flow passage first parameters.

[0033] The 5-point coordinate corresponding to each group of preset intake cylinder flow passage first parameters is determined according to the control point coordinate on the inner flow passage of the compressor inlet, the angle between the outer flow passage inlet straight line segment and the axial direction corresponding to each group of preset intake cylinder flow passage first parameters, the tangent angle of the point a at the compressor inlet and the control point coordinate on the outer flow passage of the compressor inlet.

[0034] Further, the 2 point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage are determined according to the control point coordinates on the inlet outer flow passage of the compressor, the radial coordinates of the intersection of the support plate and the inner flow passage of the intake cylinder in each group of preset first parameters of the intake cylinder flow passage, the axial coordinates of the support plate inlet position mark line, the axial coordinates of the support plate outlet position mark line, the tangent angle of point c at the inlet of the compressor, the included angle between the inlet straight line segment of the inner flow passage of the intake cylinder and the axial direction in each group of preset first parameters of the intake cylinder flow passage, and the 1 point coordinates, comprising:

[0035] The radius of the first circular arc is determined according to the control point coordinates on the inlet outer flow passage of the compressor, the radial coordinates of the intersection of the support plate and the inner flow passage of the intake cylinder, the axial coordinates of the support plate inlet position mark line, the axial coordinates of the support plate outlet position mark line, and the tangent angle of point c at the inlet of the compressor;

[0036] The 2 point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage are determined according to the radius of the first circular arc, the tangent angle of point c at the inlet of the compressor, the included angle between the inlet straight line segment of the inner flow passage of the intake cylinder and the axial direction in each group of preset first parameters of the intake cylinder flow passage, and the 1 point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage.

[0037] Further, the 3 point coordinates and the 4 point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage are obtained by iterative calculation based on the ratio of the tangent circle area of the flow passage inlet to the outlet tangent circle area in each group of preset first parameters of the intake cylinder flow passage and the first straight line equation corresponding to each group of preset first parameters of the intake cylinder flow passage, comprising:

[0038] Step F1: an initial value of the ratio DR1 of the tangent circle diameter D1 of the flow passage inlet to the outlet tangent circle diameter D0 is given, and the radius of the tangent circle of the flow passage inlet is determined based on the initial value;

[0039] Step F2: the abscissa of the 4 point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage is determined according to the axial coordinates of the support plate inlet position mark line and the axial distance between the starting point of the inlet straight line segment of the outer flow passage of the intake cylinder and point a in each group of preset first parameters of the intake cylinder flow passage;

[0040] Step F3: the abscissa of the 3 point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage is determined according to the abscissa of the 4 point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage, the radius of the tangent circle of the flow passage inlet, the included angle between the inlet straight line segment of the outer flow passage of the intake cylinder and the axial direction in each group of preset first parameters of the intake cylinder flow passage, and the included angle between the inlet straight line segment of the inner flow passage of the intake cylinder and the axial direction in each group of preset first parameters of the intake cylinder flow passage;

[0041] Step F4: determining the vertical coordinates of the 3-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters according to the horizontal coordinates of the 3-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters, the angles between the intake cylinder inner flow passage inlet straight line segments and the axial direction in each group of preset intake cylinder flow passage first parameters, and the lower control point coordinates of the intake cylinder outer flow passage inlet;

[0042] Step F5: determining the vertical coordinates of the 4-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters according to the vertical coordinates of the 3-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters, the radii of the tangent circles of the flow passage inlets, the angles between the intake cylinder inner flow passage inlet straight line segments and the axial direction in each group of preset intake cylinder flow passage first parameters, and the angles between the intake cylinder outer flow passage inlet straight line segments and the axial direction in each group of preset intake cylinder flow passage first parameters;

[0043] Step F6: determining the areas of the flow passage inlets corresponding to each group of preset intake cylinder flow passage first parameters according to the vertical coordinates of the 3-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters, the vertical coordinates of the 4-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters, the angles between the intake cylinder inner flow passage inlet straight line segments and the axial direction in each group of preset intake cylinder flow passage first parameters, and the angles between the intake cylinder outer flow passage inlet straight line segments and the axial direction in each group of preset intake cylinder flow passage first parameters;

[0044] Step F7: determining the ratio of the areas of the flow passage inlets corresponding to each group of preset intake cylinder flow passage first parameters to the areas of the flow passage outlets corresponding to each group of preset intake cylinder flow passage first parameters;

[0045] Step F8: determining whether the difference between the ratio of the areas of the flow passage inlets corresponding to each group of preset intake cylinder flow passage first parameters to the areas of the flow passage outlets corresponding to each group of preset intake cylinder flow passage first parameters and the ratio of the areas of the tangent circles of the flow passage inlets to the areas of the tangent circles of the flow passage outlets in each group of preset intake cylinder flow passage first parameters is greater than 0.001, and if yes, adding 0.001 to the ratio of the diameters of the tangent circles of the flow passage inlets to the diameters of the tangent circles of the flow passage outlets, and returning to Step F1 until the difference is less than or equal to 0.001.

[0046] Further, the determination of the 5-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters according to the lower control point coordinates of the compressor inlet inner flow passage, the angles between the intake cylinder outer flow passage inlet straight line segments and the axial direction corresponding to each group of preset intake cylinder flow passage first parameters, the tangent angle of point a at the compressor inlet, and the upper control point coordinates a of the compressor inlet outer flow passage comprises:

[0047] determine a straight line slope between the 4-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters and the 5-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters based on the included angle a2 between the intake cylinder outer flow passage inlet straight line segment and the axial direction in each group of preset intake cylinder flow passage first parameters;

[0048] determine a radius corresponding to the second segment of the circular arc corresponding to each group of preset intake cylinder flow passage first parameters based on the straight line slope, the 4-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters, the control point coordinates on the compressor inlet outer flow passage, the included angle between the intake cylinder outer flow passage inlet straight line segment and the axial direction in each group of preset intake cylinder flow passage first parameters, and the tangent angle of point a at the compressor inlet;

[0049] determine the 5-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters based on the control point coordinates on the compressor inlet outer flow passage, the radius corresponding to the second segment of the circular arc corresponding to each group of preset intake cylinder flow passage first parameters, the included angle between the intake cylinder outer flow passage inlet straight line segment and the axial direction in each group of preset intake cylinder flow passage first parameters, and the tangent angle of point a at the compressor inlet.

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

[0051] an acquisition module configured to acquire control point coordinates on an inlet outer flow passage of a compressor connected to an intake cylinder in a heavy-duty gas turbine, lower control point coordinates on the inlet outer flow passage, upper control point coordinates on an inlet inner flow passage of the compressor, lower control point coordinates on the inlet inner flow passage of the compressor, axial coordinates of a position mark of an inlet of a branch plate, axial coordinates of a position mark of an outlet of the branch plate, and a plurality of groups of preset intake cylinder flow passage first parameters;

[0052] a determination module configured to determine, based on the control point coordinates on the inlet outer flow passage of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the lower control point coordinates on the inlet outer flow passage, the upper control point coordinates on the inlet inner flow passage of the compressor, the lower control point coordinates on the inlet inner flow passage of the compressor, the axial coordinates of the position mark of the inlet of the branch plate, the axial coordinates of the position mark of the outlet of the branch plate, and the plurality of groups of preset intake cylinder flow passage first parameters, coordinate points of the intake cylinder flow passage corresponding to each group of preset intake cylinder flow passage first parameters;

[0053] a generation module configured to generate, based on the coordinate points of the intake cylinder flow passage corresponding to each group of preset intake cylinder flow passage first parameters, an intake cylinder flow passage corresponding to each group of preset intake cylinder flow passage first parameters;

[0054] An optimization module is configured to evaluate the airflow uniformity of the intake cylinder flow passage corresponding to each group of preset intake cylinder flow passage first parameters, and select an optimal first parameter from the groups of preset intake cylinder flow passage first parameters based on the evaluation result, and then use the optimal first parameter as the design parameter of the intake cylinder flow passage.

[0055] The third aspect of the present application provides an electronic device, which comprises a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the processor implements the method according to the first aspect of the present application when executing the program.

[0056] The fourth aspect of the present application provides a computer readable storage medium, which stores a computer program, and the program is executed by a processor to implement the method according to the first aspect of the present application.

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

[0058] The present application provides a method and system for determining the design parameters of the intake cylinder flow passage of a lateral intake device. The method comprises: obtaining the coordinates of the control points on the inlet outer flow passage of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the control points on the inlet outer flow passage, the coordinates of the control points on the inlet inner flow passage of the compressor, the coordinates of the control points on the inlet inner flow passage of the compressor, the axial coordinates of the inlet position mark line of the branch plate, the axial coordinates of the outlet position mark line of the branch plate, and a plurality of groups of preset intake cylinder flow passage first parameters; determining the coordinate points of the intake cylinder flow passage corresponding to the plurality of groups of preset intake cylinder flow passage first parameters based on the coordinates of the control points on the inlet outer flow passage of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the coordinates of the control points on the inlet outer flow passage, the coordinates of the control points on the inlet inner flow passage of the compressor, the coordinates of the control points on the inlet inner flow passage of the compressor, the axial coordinates of the inlet position mark line of the branch plate, the axial coordinates of the outlet position mark line of the branch plate, and the plurality of groups of preset intake cylinder flow passage first parameters; generating the intake cylinder flow passage corresponding to each group of preset intake cylinder flow passage first parameters based on the coordinate points of the intake cylinder flow passage corresponding to the plurality of groups of preset intake cylinder flow passage first parameters; evaluating the airflow uniformity of the intake cylinder flow passage corresponding to each group of preset intake cylinder flow passage first parameters, and selecting an optimal first parameter from the groups of preset intake cylinder flow passage first parameters based on the evaluation result, and then using the optimal first parameter as the design parameter of the intake cylinder flow passage. The technical scheme provided by the present application can improve the non-uniformity of the inlet flow of the compressor of the lateral intake device, and can quickly generate the intake cylinder profile and shorten the design time.

[0059] Additional aspects and advantages of the present application will be part of the following description, part of which will become apparent from the following description, or will be understood by practicing the present application. BRIEF DESCRIPTION OF DRAWINGS

[0060] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings, in which:

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

[0062] Figure 2 A schematic view of a profile of a cylinder passage to a compressor inlet section of a side intake device according to an embodiment of the present application;

[0063] Figure 3 A schematic view of profile control parameters of a cylinder passage of a side intake device according to an embodiment of the present application;

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

[0065] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals are used throughout the figures to refer to same or like components. The embodiments described below are illustrative of the present application and are not intended to be limiting.

[0066] The application provides a method and system for determining design parameters of an air inlet cylinder flow channel of a lateral air inlet device.The method comprises the following steps: obtaining coordinates of control points on an inlet outer flow channel of a compressor connected with the air inlet cylinder in a heavy-duty gas turbine, coordinates of control points on an inlet inner flow channel of the compressor, axial coordinates of an inlet position mark line of a branch plate, axial coordinates of an outlet position mark line of the branch plate and a plurality of preset first parameters of the air inlet cylinder flow channel; determining each coordinate point of the air inlet cylinder flow channel corresponding to each of the plurality of preset first parameters of the air inlet cylinder flow channel according to the coordinates of the control points on the inlet outer flow channel of the compressor connected with the air inlet cylinder in the heavy-duty gas turbine, the coordinates of the control points on the inlet inner flow channel of the compressor, the axial coordinates of the inlet position mark line of the branch plate, the axial coordinates of the outlet position mark line of the branch plate and the plurality of preset first parameters of the air inlet cylinder flow channel; generating the air inlet cylinder flow channel corresponding to each of the plurality of preset first parameters of the air inlet cylinder flow channel based on the each coordinate point of the air inlet cylinder flow channel corresponding to each of the plurality of preset first parameters of the air inlet cylinder flow channel; evaluating uniformity of incoming air flow of the air inlet cylinder flow channel corresponding to each of the plurality of preset first parameters of the air inlet cylinder flow channel, and screening the optimal first parameter from the plurality of preset first parameters of the air inlet cylinder flow channel based on an evaluation result, and then taking the optimal first parameter as a design parameter of the air inlet cylinder flow channel. The technical scheme provided by the application can improve the phenomenon that the air inlet device causes non-uniformity of air flow at the inlet of the compressor, and can shorten the design time by quickly generating the profile of the air inlet cylinder.

[0067] A method and system for determining design parameters of an air inlet cylinder flow channel of a lateral air inlet device are described below with reference to the accompanying drawings.

[0068] Embodiment one

[0069] Figure 1 A flow chart of a method for determining design parameters of an air inlet cylinder flow channel of a lateral air inlet device according to an embodiment of the application is shown in Figure 1 The method comprises the following steps:

[0070] Step 1: obtaining coordinates a of control points on an inlet outer flow channel of a compressor connected with the air inlet cylinder in a heavy-duty gas turbine, coordinates b of control points on an inlet inner flow channel of the compressor, axial coordinates xle of an inlet position mark line of a branch plate, axial coordinates xte of an outlet position mark line of the branch plate and a plurality of preset first parameters of the air inlet cylinder flow channel, as shown in Figure 2

[0071] In the embodiment of the disclosure, the first parameters of the air inlet cylinder flow channel comprise:

[0072] An angle a1 between the straight line section of the inlet port of the inner flow passage of the intake cylinder and the axial direction, an angle a2 between the straight line section of the inlet port of the outer flow passage of the intake cylinder and the axial direction, a radial coordinate y_mid of the intersection point of the branch plate in the flow passage of the intake cylinder and the inner flow passage of the intake cylinder, an axial length line1 of the straight line section of the outlet of the inner flow passage of the intake cylinder, an axial distance line2 between the starting point of the straight line section of the inlet port of the outer flow passage of the intake cylinder and point a, a ratio AR1 of the tangent circle area of the inlet port to the tangent circle area of the outlet, wherein point a is a control point on the inlet outer flow passage of the compressor connected with the intake cylinder;

[0073] As shown in Figure 2 The inner flow passage is sequentially composed of a first straight line, a first circular arc and a second straight line;

[0074] The outer flow passage is sequentially composed of a third straight line and a second circular arc;

[0075] The first straight line and the second circular 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] The two ends of the first circular arc are connected with the first straight line and the second straight line respectively;

[0078] The coordinates of the intake cylinder flow passage include 0-point coordinate, 1-point coordinate, 2-point coordinate, 3-point coordinate, 4-point coordinate, 5-point coordinate and 6-point coordinate;

[0079] The 0-point coordinate is the control point coordinate on the inlet inner flow passage of the compressor;

[0080] The 1-point coordinate is the coordinate of the connecting point 1 of the first straight line and the first circular arc;

[0081] The 2-point coordinate is the coordinate of the connecting point 2 of the first circular arc and the second straight line;

[0082] The 3-point coordinate is the coordinate of the inlet end 3 of the second straight line in the intake cylinder;

[0083] The 4-point coordinate is the coordinate of the inlet end 4 of the second circular arc in the intake cylinder;

[0084] The 5-point coordinate is the coordinate of the connecting point 5 of the third straight line and the second circular arc;

[0085] The 6-point coordinate is the coordinate of the control point 6 on the inlet outer flow passage of the compressor.

[0086] Step 2: determining the coordinates of each coordinate point of the intake cylinder flow channel corresponding to each group of preset intake cylinder flow channel first parameters according to the coordinates of the control point on the inlet outer flow channel of the compressor connected with the intake cylinder, the coordinates of the control point on the inlet outer flow channel, the coordinates of the control point on the inlet inner flow channel of the compressor, the coordinates of the control point on the inlet inner flow channel of the compressor, the axial coordinates of the intake position mark line of the branch plate, the axial coordinates of the outlet position mark line of the branch plate and a plurality of groups of preset intake cylinder flow channel first parameters, respectively.

[0087] In the embodiments of the present disclosure, the step 2 specifically comprises:

[0088] Step 2.1: determining the tangent angle α0 of the c point at the inlet of the compressor according to the control point c on the inlet inner flow channel of the compressor and the control point d on the inlet inner flow channel of the compressor, and determining the tangent angle α3 of the a point at the inlet of the compressor according to the control point a on the inlet outer flow channel of the compressor and the control point b on the inlet outer flow channel of the compressor.

[0089] Step 2.2: determining the 1 point coordinates, 2 point coordinates, 3 point coordinates, 4 point coordinates and 5 point coordinates of the intake cylinder flow channel corresponding to each group of preset intake cylinder flow channel first parameters according to the tangent angle α0 of the c point at the inlet of the compressor, the tangent angle α3 of the a point at the inlet of the compressor, the axial coordinates xle of the intake position mark line of the branch plate, the axial coordinates xte of the outlet position mark line of the branch plate and a plurality of groups of preset intake cylinder flow channel first parameters, respectively.

[0090] Wherein, the control point on the inlet outer flow channel of the compressor is the control point a, the control point on the inlet outer flow channel of the compressor is the control point b, the control point on the inlet inner flow channel of the compressor is the control point c, and the control point on the inlet inner flow channel of the compressor is the control point d.

[0091] In the embodiments of the present disclosure, the step 2.2 specifically comprises:

[0092] 2.2.1 determining the 1 point coordinates corresponding to each group of preset intake cylinder flow channel first parameters according to the coordinates c of the control point on the inlet inner flow channel of the compressor, the tangent angle α0 of the c point at the inlet of the compressor and the axial length line1 of the straight line segment of the inlet inner flow channel of the intake cylinder in each group of preset intake cylinder flow channel first parameters, respectively.

[0093] It should be noted that, as shown in Figure 3 0 point and c point are the same point, and 6 point and a point are the same point.

[0094] The coordinates of the control point a are (xa, ya), the coordinates of the control point b are (xb, yb), the coordinates of the control point c are (xc, yc), and the coordinates of the 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), thus obtaining the coordinates of point 1 (x1, y1).

[0096] 2.2.2 The coordinates of the two points corresponding to the first parameters of the inlet flow channel of the compressor are determined according to the coordinates of the control point a on the outer flow channel of the compressor, the radial coordinates y_mid of the intersection of the support plate and the inner flow channel of the inlet flow channel in each set of preset first parameters of the inlet flow channel, the axial coordinates xle of the support plate inlet position mark, the axial coordinates xte of the support plate outlet position mark, the tangent angle α0 of point c at the compressor inlet, the angle α1 between the straight line segment of the inlet of the inner flow channel of the inlet and the axis in each set of preset first parameters of the inlet flow channel, and the coordinates of point 1.

[0097] Section 2.2.2 includes:

[0098] The radius r1 of the first arc is determined based on the coordinates of the control point on the compressor inlet external flow channel, the radial coordinates of the intersection of the support plate and the inner flow channel of the intake cylinder, the axial coordinates of the support plate inlet position mark, the axial coordinates of the support plate outlet position mark, and the tangent angle α0 at point c at the compressor inlet.

[0099] The coordinates of the two points corresponding to the first parameters of the intake cylinder flow channel are determined based on the radius r1 of the first arc, the tangent angle α0 at point c at the compressor inlet, the angle α1 between the straight segment of the intake cylinder flow channel inlet and the axis in each set of preset first parameters of the intake cylinder flow channel, and the coordinates of point 1 corresponding to each set of preset first parameters of the intake cylinder flow channel.

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

[0101] x2 = x1 - r1*sin(α0) - r1*sin(α1), y2 = y1 + r1*cos(α0) - r1*cos(α1), thus obtaining the coordinates of point 2 (x2, y2).

[0102] 2.2.3 Determine the first linear equation corresponding to each set of preset intake cylinder runner first parameters between the 2-point coordinate and the 3-point coordinate according to the 2-point coordinate and the included angle a1 between the intake cylinder inner runner inlet linear segment and the axial direction in each set of preset intake cylinder runner first parameters respectively, and then perform iterative calculation based on the tangent circle area ratio AR1 of the runner inlet, the first linear equation corresponding to each set of preset intake cylinder runner first parameters to obtain the 3-point coordinate and the 4-point coordinate corresponding to each set of preset intake cylinder runner first parameters;

[0103] 2.2.3 includes:

[0104] Step F1: Given an initial value of the tangent circle diameter D1 of the runner inlet and the tangent circle diameter D0 ratio DR1, and determine the radius r2 of the tangent circle of the runner inlet based on the initial value;

[0105] Step F2: Determine the abscissa of the 4-point coordinate corresponding to each set of preset intake cylinder runner first parameters 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 intake cylinder outer runner inlet linear segment and point a in each set of preset intake cylinder runner first parameters respectively;

[0106] Step F3: Determine the abscissa of the 3-point coordinate corresponding to each set of preset intake cylinder runner first parameters according to the abscissa of the 4-point coordinate corresponding to each set of preset intake cylinder runner first parameters, the radius r2 of the tangent circle of the runner inlet, the included angle a2 between the intake cylinder outer runner inlet linear segment and the axial direction in each set of preset intake cylinder runner first parameters, and the included angle a1 between the intake cylinder inner runner inlet linear segment and the axial direction in each set of preset intake cylinder runner first parameters respectively;

[0107] Step F4: Determine the ordinate of the 3-point coordinate corresponding to each set of preset intake cylinder runner first parameters according to the abscissa of the 3-point coordinate corresponding to each set of preset intake cylinder runner first parameters, the included angle a1 between the intake cylinder inner runner inlet linear segment and the axial direction in each set of preset intake cylinder runner first parameters, and the lower control point coordinate of the inlet outer runner;

[0108] Step F5: Determine the ordinate of the 4-point coordinate corresponding to each set of preset intake cylinder runner first parameters according to the ordinate of the 3-point coordinate corresponding to each set of preset intake cylinder runner first parameters, the radius r2 of the tangent circle of the runner inlet, the included angle a1 between the intake cylinder inner runner inlet linear segment and the axial direction in each set of preset intake cylinder runner first parameters, and the included angle a2 between the intake cylinder outer runner inlet linear segment and the axial direction in each set of preset intake cylinder runner first parameters respectively;

[0109] Step F6: Determine the area A1 of the flow passage inlet corresponding to each group of preset intake cylinder flow passage first parameters according to the longitudinal coordinates of the 3-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters, the longitudinal coordinates of the 4-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters, the angle a1 between the intake cylinder inner flow passage inlet straight line segment and the axial direction in each group of preset intake cylinder flow passage first parameters, and the angle a2 between the intake cylinder outer flow passage inlet straight line segment and the axial direction in each group of preset intake cylinder flow passage first parameters.

[0110] Step F7: Determine the ratio AR of the area A1 of the flow passage inlet corresponding to each group of preset intake cylinder flow passage first parameters to the area of the flow passage outlet corresponding to each group of preset intake cylinder flow passage first parameters.

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

[0112] It should be noted that, as shown in Figure 3 The formula of the straight line between points 2 and 3 is known as: y = -tan(a1)*x + y2 + tan(a1)*x2.

[0113] The area A0 of the flow passage outlet can be obtained according to the input parameters: A0 = π*(ya^2 - yc^2) / [cos(a3-a2) / 2]^2

[0114] The tangent circle diameter of the flow passage outlet is D0: D0 = ya - yc.

[0115] The next parameter needs to be solved using an iterative method. First, give an initial value of 0.9 to the ratio DR1 of the tangent circle diameter D1 of the flow passage inlet to the tangent circle diameter D0 of the flow passage outlet, then:

[0116] D1 = D0*DR1, and the radius r2 of the flow passage inlet tangent circle is: r2 = D1 / 2 / cos(a2-a1) / 2.

[0117] The slope k2 of the straight line between points 4 and 5 is: k2 = -tan(a2).

[0118] It can be obtained that x4=x1e-line2, x3=x4-r2*sin(a2)-r2*sin(a1), y3=-tan(a1)*x3+y2+tan(a1)*x2, y4=y3+r2*cos(a1)+r2*cos(a2);

[0119] The area A1 of the flow channel inlet is A1=π*(y4^2-y3^2) / [cos(a1 / 2+a2 / 2)]^2;

[0120] Then the import and export area ratio AR under the ratio can be obtained: AR=A1 / A0;

[0121] If the difference between AR and AR1 is greater than 0.001, the value of DR1 is increased by 0.001 and the above calculation is returned again until the absolute value of the difference between AR and AR1 is less than 0.001.

[0122] 2.2.4 Determining the 5-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow channel according to the coordinates of the control points in the intake cylinder flow channel inlet flow channel, the angle a2 between the straight line segment of the intake cylinder outer flow channel inlet and the axial direction corresponding to each group of preset first parameters of the intake cylinder flow channel, the tangent angle a3 of point a at the inlet of the compressor, and the coordinates of the control points on the outer flow channel inlet of the compressor.

[0123] Among them, the 2.2.4 includes:

[0124] Determining the straight line slope k2 between the 4-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow channel and the 5-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow channel based on the angle a2 between the straight line segment of the intake cylinder outer flow channel inlet and the axial direction in each group of preset first parameters of the intake cylinder flow channel;

[0125] Determining the radius r3 corresponding to the second segment of the arc corresponding to each group of preset first parameters of the intake cylinder flow channel according to the straight line slope k2, the 4-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow channel, the coordinates of the control points on the outer flow channel inlet of the compressor, the angle a2 between the straight line segment of the intake cylinder outer flow channel inlet and the axial direction in each group of preset first parameters of the intake cylinder flow channel, and the tangent angle a3 of point a at the inlet of the compressor.

[0126] Determining the 5-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow channel according to the coordinates of the control points on the outer flow channel inlet of the compressor, the radius r3 corresponding to the second segment of the arc corresponding to each group of preset first parameters of the intake cylinder flow channel, the angle a2 between the straight line segment of the intake cylinder outer flow channel inlet and the axial direction in each group of preset first parameters of the intake cylinder flow channel, and the tangent angle a3 of point a at the inlet of the compressor.

[0127] 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 5-point coordinates is performed.

[0128] The radius r3 between point 5 and point 6 is: r3=(y4-k2*x4+k2*xa-ya) / [k2*(sin(a2)+sin(a3))-cos(a2)+sin(a3)];

[0129] Then the horizontal and vertical coordinates of point 5 are respectively:

[0130] x5=xa-r3*sin(a3)-r3*sin(a2), y5=ya+r3*cos(a3)-r3*cos(a2).

[0131] Step 3: Based on the plurality of groups of preset first parameters of the intake cylinder flow passage, each group of preset first parameters of the intake cylinder flow passage is generated.

[0132] It should be noted that between each two points, a plurality of points are evenly taken according to the connection mode to obtain the corresponding profile line.

[0133] Step 4: The uniformity of the incoming air of each group of preset first parameters of the intake cylinder flow passage is evaluated, and the optimal first parameter is selected from the plurality of groups of preset first parameters of the intake cylinder flow passage based on the evaluation result, and then the optimal first parameter is taken as the design parameter of the intake cylinder flow passage.

[0134] The method for determining the design parameter of the intake cylinder flow passage of the lateral intake device has the following advantages:

[0135] 1. It can improve the phenomenon of non-uniformity of the gas compressor inlet flow of the lateral intake device.

[0136] 2. It can realize the rapid generation of the intake cylinder profile line of the gas turbine, and shorten the design time.

[0137] 3. It can parameterize the intake cylinder profile line of the gas turbine, and has high degree of freedom, which is convenient for adapting to different sizes of gas turbine compressors.

[0138] In summary, the method for determining the design parameter of the intake cylinder flow passage of the lateral intake device can improve the phenomenon of non-uniformity of the gas compressor inlet flow of the lateral intake device, and realize the rapid generation of the intake cylinder profile line, and shorten the design time.

[0139] Example 2

[0140] Figure 4A structure diagram of a system for determining design parameters of an inlet cylinder flow passage of a side inlet device according to an embodiment of the present application is shown in FIG. 1. The system includes: Figure 4

[0141] An acquisition module 100 is configured to acquire coordinates of control points on an inlet outer flow passage of a compressor connected to the inlet cylinder, coordinates of control points on an inlet inner flow passage of the compressor, axial coordinates of a position mark line at an inlet of a diaphragm, axial coordinates of a position mark line at an outlet of the diaphragm, and a plurality of preset first parameters of the inlet cylinder flow passage.

[0142] A determination module 200 is configured to determine, according to the coordinates of the control points on the inlet outer flow passage of the compressor connected to the inlet cylinder, the coordinates of the control points on the inlet inner flow passage of the compressor, the axial coordinates of the position mark line at the inlet of the diaphragm, the axial coordinates of the position mark line at the outlet of the diaphragm, and the plurality of preset first parameters of the inlet cylinder flow passage, coordinate points of the inlet cylinder flow passage corresponding to the plurality of preset first parameters of the inlet cylinder flow passage.

[0143] A generation module 300 is configured to generate, based on the coordinate points of the inlet cylinder flow passage corresponding to the plurality of preset first parameters of the inlet cylinder flow passage, the inlet cylinder flow passage corresponding to each of the plurality of preset first parameters of the inlet cylinder flow passage.

[0144] An optimization module 400 is configured to evaluate uniformity of incoming air flow of the inlet cylinder flow passage corresponding to each of the plurality of preset first parameters of the inlet cylinder flow passage, and select an optimal first parameter from the plurality of preset first parameters of the inlet cylinder flow passage based on an evaluation result, and then use the optimal first parameter as a design parameter of the inlet cylinder flow passage.

[0145] The first parameters of the inlet cylinder flow passage include:

[0146] An included angle between a straight line segment of an inlet inner flow passage of the inlet cylinder and an axial direction, an included angle between a straight line segment of an inlet outer flow passage of the inlet cylinder and the axial direction, a radial coordinate of an intersection point between a diaphragm and the inlet inner flow passage of the inlet cylinder, an axial length of a straight line segment of an outlet of the inlet inner flow passage, an axial distance between a starting point of the straight line segment of the inlet outer flow passage and a point a, and a ratio of a tangent circle area at an inlet of the flow passage to a tangent circle area at an outlet of the flow passage, wherein the point a is a control point on the inlet outer flow passage of the compressor connected to the inlet cylinder.

[0147] The inlet inner flow passage is composed of a first straight line, a first circular arc, and a second straight line in sequence.

[0148] The inlet outer flow passage is composed of a third straight line and a second circular arc in sequence.

[0149] The first straight line and the second circular arc are located at an outlet end of the inlet cylinder.​

[0150] The second straight line and the third straight line are located at the inlet end of the intake cylinder.

[0151] Two ends of the first arc are connected with the first straight line and the second straight line respectively.

[0152] The coordinate points of the intake cylinder flow passage include: 0-point coordinate, 1-point coordinate, 2-point coordinate, 3-point coordinate, 4-point coordinate, 5-point coordinate and 6-point coordinate.

[0153] The 0-point coordinate is a control point coordinate on the inner flow passage of the compressor inlet.

[0154] The 1-point coordinate is a coordinate of a connecting point of the first straight line and the first arc.

[0155] The 2-point coordinate is a coordinate of a connecting point of the first arc and the second straight line.

[0156] The 3-point coordinate is a coordinate of the second straight line at the inlet end of the intake cylinder.

[0157] The 4-point coordinate is a coordinate of the second arc at the inlet end of the intake cylinder.

[0158] The 5-point coordinate is a coordinate of a connecting point of the third straight line and the second arc.

[0159] The 6-point coordinate is a control point coordinate on the outer flow passage of the compressor inlet.

[0160] In the embodiment of the present disclosure, the determination module 200 is further configured to:

[0161] The tangent angle of the point at the compressor inlet is determined according to the control point on the inner flow passage of the compressor inlet and the control point below the inner flow passage of the compressor inlet, and the tangent angle of the point at the compressor inlet is determined according to the control point on the outer flow passage of the compressor inlet and the control point below the outer flow passage of the compressor inlet.

[0162] The 1-point coordinate, the 2-point coordinate, the 3-point coordinate, the 4-point coordinate and the 5-point coordinate of the intake cylinder flow passage corresponding to each group of preset first parameters of the intake cylinder flow passage are determined respectively according to the tangent angle of the point c at the compressor inlet, the tangent angle of the point a at the compressor inlet, the axial coordinate of the position mark of the shroud inlet, the axial coordinate of the position mark of the shroud outlet and the plurality of groups of preset first parameters of the intake cylinder flow passage.

[0163] The control point on the outer flow passage of the compressor inlet is a control point, the control point below the outer flow passage of the compressor inlet is a control point, the control point on the inner flow passage of the compressor inlet is a control point, and the control point below the inner flow passage of the compressor inlet is a control point.

[0164] Further, the determination module 200 is further configured to:

[0165] The 1-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage are determined according to the control point coordinates on the compressor inlet inner flow passage, the tangent angle of the point at the compressor inlet, and the axial length of the intake cylinder inner flow passage outlet straight line segment in each group of preset first parameters of the intake cylinder flow passage, respectively.

[0166] The 2-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage are determined according to the control point coordinates on the compressor inlet outer flow passage, the radial coordinates of the intersection of the intake cylinder flow passage middle branch plate and the intake cylinder inner flow passage, the axial coordinates of the branch plate inlet position mark line, the axial coordinates of the branch plate outlet position mark line, the tangent angle of the point c at the compressor inlet, the angle between the intake cylinder inner flow passage inlet straight line segment and the axial direction in each group of preset first parameters of the intake cylinder flow passage, and the 1-point coordinates, respectively.

[0167] The first straight line equations corresponding to each group of preset first parameters of the intake cylinder flow passage between the 2-point coordinates and the 3-point coordinates are determined according to the 2-point coordinates and the angle between the intake cylinder inner flow passage inlet straight line segment and the axial direction in each group of preset first parameters of the intake cylinder flow passage, respectively, and then the 3-point coordinates and the 4-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage are obtained through iterative calculation based on the ratio of the tangent circle area of the flow passage inlet to the tangent circle area of the flow passage outlet in each group of preset first parameters of the intake cylinder flow passage and the first straight line equations corresponding to each group of preset first parameters of the intake cylinder flow passage.

[0168] The 5-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage are determined according to the control point coordinates on the compressor inlet outer flow passage, the angle between the intake cylinder outer flow passage inlet straight line segment and the axial direction corresponding to each group of preset first parameters of the intake cylinder flow passage, the tangent angle of the point a at the compressor inlet, and the control point coordinates on the compressor inlet outer flow passage, respectively.

[0169] Further, the determination module 200 is further used for:

[0170] The radius of the first circular arc is determined according to the control point coordinates on the compressor inlet outer flow passage, the radial coordinates of the intersection of the intake cylinder flow passage middle branch plate and the intake cylinder inner flow passage, the axial coordinates of the branch plate inlet position mark line, the axial coordinates of the branch plate outlet position mark line, and the tangent angle of the point c at the compressor inlet.

[0171] The 2-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage are determined according to the radius of the first circular arc, the tangent angle of the point c at the compressor inlet, the angle between the intake cylinder inner flow passage inlet straight line segment and the axial direction in each group of preset first parameters of the intake cylinder flow passage, and the 1-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage, respectively.

[0172] Further, the determining module 200 is further used for:

[0173] Step E1: Given an initial value of the ratio of the diameter of the tangent circle of the inlet of the flow channel to the diameter of the tangent circle of the outlet, and determining the radius of the tangent circle of the inlet of the flow channel based on the initial value;

[0174] Step E2: Determining the abscissa of the 4-point coordinates corresponding to each set of preset first parameters of the inlet of the intake cylinder flow channel according to the axial coordinates of the mark line of the inlet position of the branch plate and the axial distance between the starting point of the straight line segment of the inlet of the outer flow channel of the intake cylinder and point a in each set of preset first parameters of the inlet of the intake cylinder flow channel, respectively;

[0175] Step E3: Determining the abscissa of the 3-point coordinates corresponding to each set of preset first parameters of the inlet of the intake cylinder flow channel according to the abscissa of the 4-point coordinates corresponding to each set of preset first parameters of the inlet of the intake cylinder flow channel, the radius of the tangent circle of the inlet of the flow channel, the angle between the straight line segment of the inlet of the outer flow channel of the intake cylinder and the axial direction in each set of preset first parameters of the inlet of the intake cylinder flow channel, and the angle between the straight line segment of the inlet of the inner flow channel of the intake cylinder and the axial direction in each set of preset first parameters of the inlet of the intake cylinder flow channel, respectively;

[0176] Step E4: Determining the ordinate of the 3-point coordinates corresponding to each set of preset first parameters of the inlet of the intake cylinder flow channel according to the abscissa of the 3-point coordinates corresponding to each set of preset first parameters of the inlet of the intake cylinder flow channel, the angle between the straight line segment of the inlet of the inner flow channel of the intake cylinder and the axial direction in each set of preset first parameters of the inlet of the intake cylinder flow channel, and the coordinates of the lower control point of the outer flow channel of the inlet, respectively;

[0177] Step E5: Determining the ordinate of the 4-point coordinates corresponding to each set of preset first parameters of the inlet of the intake cylinder flow channel according to the ordinate of the 3-point coordinates corresponding to each set of preset first parameters of the inlet of the intake cylinder flow channel, the radius of the tangent circle of the inlet of the flow channel, the angle between the straight line segment of the inlet of the inner flow channel of the intake cylinder and the axial direction in each set of preset first parameters of the inlet of the intake cylinder flow channel, and the angle between the straight line segment of the inlet of the outer flow channel of the intake cylinder and the axial direction in each set of preset first parameters of the inlet of the intake cylinder flow channel, respectively;

[0178] Step E6: Determining the area of the inlet of the flow channel corresponding to each set of preset first parameters of the inlet of the intake cylinder flow channel according to the ordinate of the 3-point coordinates corresponding to each set of preset first parameters of the inlet of the intake cylinder flow channel, the ordinate of the 4-point coordinates corresponding to each set of preset first parameters of the inlet of the intake cylinder flow channel, the angle between the straight line segment of the inlet of the inner flow channel of the intake cylinder and the axial direction in each set of preset first parameters of the inlet of the intake cylinder flow channel, and the angle between the straight line segment of the inlet of the outer flow channel of the intake cylinder and the axial direction in each set of preset first parameters of the inlet of the intake cylinder flow channel, respectively;

[0179] Step E7: determining the ratio AR of the area of the flow channel inlet corresponding to each group of preset intake cylinder flow channel first parameters to the area of the flow channel outlet corresponding to each group of preset intake cylinder flow channel first parameters;

[0180] Step E8: determining whether the difference between the ratio of the area of the flow channel inlet corresponding to each group of preset intake cylinder flow channel first parameters to the area of the flow channel outlet corresponding to each group of preset intake cylinder flow channel first parameters and the ratio of the tangent circle area of the flow channel inlet to the tangent circle area of the flow channel outlet in each group of preset intake cylinder flow channel first parameters is greater than 0.001, if yes, adding 0.001 to the ratio of the tangent circle diameter of the flow channel inlet to the tangent circle diameter of the flow channel outlet, and returning to step E1 until the difference is less than or equal to 0.001.

[0181] Further, the determining module 200 is further used for:

[0182] determining the straight line slope between the 4-point coordinates corresponding to each group of preset intake cylinder flow channel first parameters and the 5-point coordinates corresponding to each group of preset intake cylinder flow channel first parameters based on the included angle between the straight line segment of the intake cylinder outer flow channel inlet and the axial direction in each group of preset intake cylinder flow channel first parameters;

[0183] determining the radius corresponding to the second segment of the circular arc corresponding to each group of preset intake cylinder flow channel first parameters according to the straight line slope, the 4-point coordinates corresponding to each group of preset intake cylinder flow channel first parameters, the control point coordinates on the inlet outer flow channel of the compressor, the included angle between the straight line segment of the intake cylinder outer flow channel inlet and the axial direction in each group of preset intake cylinder flow channel first parameters, and the tangent angle of point a at the inlet of the compressor;

[0184] determining the 5-point coordinates corresponding to each group of preset intake cylinder flow channel first parameters according to the control point coordinates on the inlet outer flow channel of the compressor, the radius corresponding to the second segment of the circular arc corresponding to each group of preset intake cylinder flow channel first parameters, the included angle between the straight line segment of the intake cylinder outer flow channel inlet and the axial direction in each group of preset intake cylinder flow channel first parameters, and the tangent angle of point a at the inlet of the compressor.

[0185] In summary, the intake cylinder flow channel design parameter determination system of the lateral intake device proposed in the embodiment can improve the phenomenon of uneven flow at the inlet of the compressor of the lateral intake device, and can quickly generate the intake cylinder profile line and shorten the design time.

[0186] Embodiment Three

[0187] In order to realize the above-mentioned embodiments, the disclosure further proposes an electronic device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to realize the method as described in Embodiment One.

[0188] Embodiment Four

[0189] To achieve the above-mentioned embodiments, the present disclosure further proposes a computer readable storage medium, which stores a computer program, and the program is executed by a processor to implement the method according to the embodiment one.

[0190] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0191] Any process or method descriptions in flow charts or described elsewhere in this specification can be understood as representing code modules, segments, or portions of code which include one or more executable instructions for implementing the specified logic functions (or steps in the process). The various embodiments of the preferred implementation of the present application can include alternate implementations which include the same or similar functions performed in a different order, including sequential or parallel execution of functions, or with the functions performed at substantially the same time, and with functions performed in reverse order, as will be appreciated by those skilled in the art. Accordingly, the scope of the present application should be understood to include alternative implementations which include the same or similar functions performed in a different order, including sequential or parallel execution of functions, or with the functions performed at substantially the same time, and with functions performed in reverse order.

[0192] Although the embodiments of the present application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

Claims

1. A method for determining the design parameters of the intake cylinder flow passage of a side intake device, characterized in that, The method comprises: obtaining the coordinates of control points on an inlet outer flow channel of a compressor connected with an inlet cylinder, the coordinates of control points on an inlet outer flow channel of the compressor, the coordinates of control points on an inlet inner flow channel of the compressor, the coordinates of control points on an inlet inner flow channel of the compressor, the axial coordinates of an inlet position mark line of a branch plate, the axial coordinates of an outlet position mark line of the branch plate, and a plurality of groups of preset first parameters of the inlet cylinder flow channel; determining the respective inlet cylinder flow channels corresponding to the plurality of groups of preset first parameters of the inlet cylinder flow channel according to the coordinates of control points on an inlet outer flow channel of a compressor connected with an inlet cylinder, the coordinates of control points on an inlet outer flow channel of the compressor, the coordinates of control points on an inlet inner flow channel of the compressor, the coordinates of control points on an inlet inner flow channel of the compressor, the axial coordinates of an inlet position mark line of a branch plate, the axial coordinates of an outlet position mark line of the branch plate, and the plurality of groups of preset first parameters of the inlet cylinder flow channel; generating the respective inlet cylinder flow channels corresponding to each group of preset first parameters of the inlet cylinder flow channel based on the respective inlet cylinder flow channels corresponding to the plurality of groups of preset first parameters of the inlet cylinder flow channel; evaluating the uniformity of the incoming air flow of the respective inlet cylinder flow channels corresponding to each group of preset first parameters of the inlet cylinder flow channel, and selecting the optimal first parameter from the plurality of groups of preset first parameters of the inlet cylinder flow channel based on the evaluation result, and then taking the optimal first parameter as the design parameter of the inlet cylinder flow channel; wherein the first parameters of the inlet cylinder flow channel comprise: an included angle between an inlet inner flow channel inlet straight line segment and an axial direction, an included angle between an inlet outer flow channel inlet straight line segment and the axial direction, a radial coordinate of an intersection point of a branch plate and the inlet inner flow channel in the inlet cylinder flow channel, an axial length of an inlet inner flow channel outlet straight line segment, an axial distance between a starting point of the inlet outer flow channel inlet straight line segment and a point a, a ratio of a tangent circle area at an inlet to a tangent circle area at an outlet, and the point a is a control point on an inlet outer flow channel of a compressor connected with the inlet cylinder.

2. The method of claim 1, wherein, The inner flow channel is composed of a first straight line, a first circular arc, and a second straight line segment in sequence. The outer flow channel is composed of a third straight line and a second circular arc in sequence. The first straight line and the second circular arc are located at an outlet end of the inlet cylinder. The second straight line and the third straight line are located at an inlet end of the inlet cylinder. Two ends of the first circular arc are connected with the first straight line and the second straight line segment, respectively. The respective coordinate points of the inlet cylinder flow channel comprise: the coordinates of the control points on the inlet inner flow channel of the compressor, the coordinates of a connection point of the first straight line and the first circular arc, the coordinates of a connection point of the first circular arc and the second straight line segment, the coordinates of the second straight line segment at the inlet end of the inlet cylinder, the coordinates of the second circular arc at the inlet end of the inlet cylinder, the coordinates of a connection point of the third straight line and the second circular arc, and the coordinates of the control points on the inlet outer flow channel of the compressor.

3. The method of claim 2, wherein, The according to the heavy gas turbine with the inlet cylinder connected compressor inlet outer flow channel control point coordinates, inlet outer flow channel lower control point coordinates, compressor inlet inner flow channel upper control point coordinates, compressor inlet inner flow channel lower control point coordinates, the axial coordinates of the position mark line of the branch plate inlet, the axial coordinates of the position mark line of the branch plate outlet and a plurality of groups of preset inlet cylinder flow channel first parameters respectively determine the plurality of groups of preset inlet cylinder flow channel first parameters corresponding to each coordinate point of the inlet cylinder flow channel, comprising: According to the tangent angle of the c point at the inlet of the compressor, the tangent angle of the a point at the inlet of the compressor, the axial coordinates of the position mark line of the branch plate inlet, the axial coordinates of the position mark line of the branch plate outlet and a plurality of groups of preset inlet cylinder flow channel first parameters respectively determine the 1 point coordinates, 2 point coordinates, 3 point coordinates, 4 point coordinates and 5 point coordinates of each group of preset inlet cylinder flow channel first parameters corresponding to the inlet cylinder flow channel. Wherein, the compressor inlet outer flow channel upper control point is control point a, the compressor inlet outer flow channel lower control point is control point b, the compressor inlet inner flow channel upper control point is control point c, and the compressor inlet inner flow channel lower control point is control point d. The according to the tangent angle of the c point at the inlet of the compressor, the tangent angle of the a point at the inlet of the compressor, the axial coordinates of the position mark line of the branch plate inlet, the axial coordinates of the position mark line of the branch plate outlet and a plurality of groups of preset inlet cylinder flow channel first parameters respectively determine the 1 point coordinates, 2 point coordinates, 3 point coordinates, 4 point coordinates and 5 point coordinates of each group of preset inlet cylinder flow channel first parameters corresponding to the inlet cylinder flow channel.

4. The method of claim 3, wherein, According to the tangent angle of the c point at the inlet of the compressor, the tangent angle of the a point at the inlet of the compressor, the axial coordinates of the position mark line of the branch plate inlet, the axial coordinates of the position mark line of the branch plate outlet and a plurality of groups of preset inlet cylinder flow channel first parameters respectively determine the 1 point coordinates, 2 point coordinates, 3 point coordinates, 4 point coordinates and 5 point coordinates of each group of preset inlet cylinder flow channel first parameters corresponding to the inlet cylinder flow channel. According to the tangent angle of the c point at the inlet of the compressor, the tangent angle of the a point at the inlet of the compressor, the axial coordinates of the position mark line of the branch plate inlet, the axial coordinates of the position mark line of the branch plate outlet and a plurality of groups of preset inlet cylinder flow channel first parameters respectively determine the 1 point coordinates, 2 point coordinates, 3 point coordinates, 4 point coordinates and 5 point coordinates of each group of preset inlet cylinder flow channel first parameters corresponding to the inlet cylinder flow channel. According to the tangent angle of the c point at the inlet of the compressor, the tangent angle of the a point at the inlet of the compressor, the axial coordinates of the position mark line of the branch plate inlet, the axial coordinates of the position mark line of the branch plate outlet and a plurality of groups of preset inlet cylinder flow channel first parameters respectively determine the 1 point coordinates, 2 point coordinates, 3 point coordinates, 4 point coordinates and 5 point coordinates of each group of preset inlet cylinder flow channel first parameters corresponding to the inlet cylinder flow channel. determining the first linear equation corresponding to each group of preset first parameters of the intake cylinder flow passage according to the 2-point coordinates and the included angle between the linear section of the intake cylinder inner flow passage inlet and the axial direction in each group of preset first parameters of the intake cylinder flow passage, and then performing iterative calculation based on the ratio of the tangent circle area of the flow passage inlet to the tangent circle area of the flow passage outlet in each group of preset first parameters of the intake cylinder flow passage and the first linear equation corresponding to each group of preset first parameters of the intake cylinder flow passage to obtain the 3-point coordinates and the 4-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage; determining the 5-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage according to the lower control point coordinates of the compressor inlet inner flow passage, the included angle between the linear section of the intake cylinder outer flow passage inlet and the axial direction corresponding to each group of preset first parameters of the intake cylinder flow passage, the tangent angle of point a at the compressor inlet, and the upper control point coordinates of the compressor inlet outer flow passage.

5. The method of claim 4, wherein, determining the 2-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage according to the upper control point coordinates of the compressor inlet outer flow passage, the radial coordinates of the intersection point of the intake cylinder flow passage middle branch plate and the intake cylinder inner flow passage, the axial coordinates of the branch plate inlet position mark line, the axial coordinates of the branch plate outlet position mark line, and the tangent angle of point c at the compressor inlet, the included angle between the linear section of the intake cylinder inner flow passage inlet and the axial direction in each group of preset first parameters of the intake cylinder flow passage, and the 1-point coordinates, including: determining the radius of the first circular arc according to the upper control point coordinates of the compressor inlet outer flow passage, the radial coordinates of the intersection point of the intake cylinder flow passage middle branch plate and the intake cylinder inner flow passage, the axial coordinates of the branch plate inlet position mark line, the axial coordinates of the branch plate outlet position mark line, and the tangent angle of point c at the compressor inlet; determining the 2-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage according to the radius of the first circular arc, the tangent angle of point c at the compressor inlet, the included angle between the linear section of the intake cylinder inner flow passage inlet and the axial direction in each group of preset first parameters of the intake cylinder flow passage, and the 1-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage.

6. The method of claim 4, wherein, the iterative calculation based on the ratio of the tangent circle area of the flow passage inlet to the tangent circle area of the flow passage outlet in each group of preset first parameters of the intake cylinder flow passage and the first linear equation corresponding to each group of preset first parameters of the intake cylinder flow passage to obtain the 3-point coordinates and the 4-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage, including: Step F1: giving an initial value of the ratio DR1 of the tangent circle diameter D1 of the flow passage inlet to the tangent circle diameter D0 of the flow passage outlet, and determining the radius of the tangent circle of the flow passage inlet based on the initial value; Step F2: determining the abscissa of the 4-point coordinates corresponding to each group of preset first parameters of the intake cylinder flow passage according to the axial coordinates of the branch plate inlet position mark line and the axial distance between the starting point of the linear section of the intake cylinder outer flow passage inlet and point a in each group of preset first parameters of the intake cylinder flow passage. Step F3: determining the horizontal coordinates of the 3-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters according to the horizontal coordinates of the 4-point coordinates, the radius of the tangent circle of the flow passage inlet, the angle between the intake cylinder outer flow passage inlet straight line segment and the axial direction in each group of preset intake cylinder flow passage first parameters, and the angle between the intake cylinder inner flow passage inlet straight line segment and the axial direction in each group of preset intake cylinder flow passage first parameters; Step F4: determining the vertical coordinates of the 3-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters according to the horizontal coordinates of the 3-point coordinates, the angle between the intake cylinder inner flow passage inlet straight line segment and the axial direction in each group of preset intake cylinder flow passage first parameters, and the lower control point coordinates of the inlet outer flow passage; Step F5: determining the vertical coordinates of the 4-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters according to the vertical coordinates of the 3-point coordinates, the radius of the tangent circle of the flow passage inlet, the angle between the intake cylinder inner flow passage inlet straight line segment and the axial direction in each group of preset intake cylinder flow passage first parameters, and the angle between the intake cylinder outer flow passage inlet straight line segment and the axial direction in each group of preset intake cylinder flow passage first parameters; Step F6: determining the area of the flow passage inlet corresponding to each group of preset intake cylinder flow passage first parameters according to the vertical coordinates of the 3-point coordinates, the vertical coordinates of the 4-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters, the angle between the intake cylinder inner flow passage inlet straight line segment and the axial direction in each group of preset intake cylinder flow passage first parameters, and the angle between the intake cylinder outer flow passage inlet straight line segment and the axial direction in each group of preset intake cylinder flow passage first parameters; Step F7: determining the ratio of the area of the flow passage inlet corresponding to each group of preset intake cylinder flow passage first parameters to the area of the flow passage outlet corresponding to each group of preset intake cylinder flow passage first parameters; Step F8: determining whether the difference between the ratio of the area of the flow passage inlet corresponding to each group of preset intake cylinder flow passage first parameters to the area of the flow passage outlet corresponding to each group of preset intake cylinder flow passage first parameters and the ratio of the area of the tangent circle of the flow passage inlet to the area of the tangent circle of the outlet in each group of preset intake cylinder flow passage first parameters is greater than 0.001, and if so, adding 0.001 to the ratio of the diameter of the tangent circle of the flow passage inlet to the diameter of the tangent circle of the outlet, and returning to step F1 until the difference is less than or equal to 0.

001.

7. The method of claim 6, wherein, The determination of the 5-point coordinates corresponding to each group of preset intake cylinder flow passage first parameters according to the lower control point coordinates of the compressor inlet inner flow passage, the angle between the intake cylinder outer flow passage inlet straight line segment and the axial direction corresponding to each group of preset intake cylinder flow passage first parameters, the tangent angle of point a at the compressor inlet, and the upper control point coordinates a of the inlet outer flow passage of the compressor includes: Determine the straight line slope between the 4-point coordinates corresponding to each group of preset intake cylinder flow channel first parameters and the 5-point coordinates corresponding to each group of preset intake cylinder flow channel first parameters based on the angle α2 between the intake cylinder outer flow channel inlet straight line segment and the axial direction in each group of preset intake cylinder flow channel first parameters; Determine the radius corresponding to the second segment of the arc corresponding to each group of preset intake cylinder flow channel first parameters according to the straight line slope, the 4-point coordinates corresponding to each group of preset intake cylinder flow channel first parameters, the control point coordinates on the inlet outer flow channel of the compressor, the angle between the intake cylinder outer flow channel inlet straight line segment and the axial direction in each group of preset intake cylinder flow channel first parameters, and the tangent angle of point a at the inlet of the compressor; Determine the 5-point coordinates corresponding to each group of preset intake cylinder flow channel first parameters according to the control point coordinates on the inlet outer flow channel of the compressor, the radius corresponding to the second segment of the arc corresponding to each group of preset intake cylinder flow channel first parameters, the angle between the intake cylinder outer flow channel inlet straight line segment and the axial direction in each group of preset intake cylinder flow channel first parameters, and the tangent angle of point a at the inlet of the compressor.

8. A system for determining design parameters for an intake cylinder runner of a side- intake device, the system comprising: The system comprises: An acquisition module configured to acquire control point coordinates on an inlet outer flow channel of a compressor connected to an intake cylinder in a heavy-duty gas turbine, lower control point coordinates on the inlet outer flow channel, upper control point coordinates on an inlet inner flow channel of the compressor, lower control point coordinates on the inlet inner flow channel of the compressor, axial coordinates of a support plate inlet position scale line, axial coordinates of a support plate outlet position scale line, and a plurality of groups of preset intake cylinder flow channel first parameters; A determination module configured to determine, respectively, intake cylinder flow channel coordinate points corresponding to each group of preset intake cylinder flow channel first parameters according to the control point coordinates on the inlet outer flow channel of the compressor connected to the intake cylinder in the heavy-duty gas turbine, the lower control point coordinates on the inlet outer flow channel, the upper control point coordinates on the inlet inner flow channel of the compressor, the lower control point coordinates on the inlet inner flow channel of the compressor, the axial coordinates of the support plate inlet position scale line, the axial coordinates of the support plate outlet position scale line, and the plurality of groups of preset intake cylinder flow channel first parameters; A generation module configured to generate, respectively, intake cylinder flow channels corresponding to each group of preset intake cylinder flow channel first parameters based on the intake cylinder flow channel coordinate points corresponding to the plurality of groups of preset intake cylinder flow channel first parameters; An optimization module configured to evaluate the uniformity of incoming air flow of the intake cylinder flow channels corresponding to each group of preset intake cylinder flow channel first parameters, and select an optimal first parameter from the plurality of groups of preset intake cylinder flow channel first parameters based on the evaluation result, and then take the optimal first parameter as a design parameter of the intake cylinder flow channel; The intake cylinder flow channel first parameters comprise: An angle between an intake cylinder inner flow channel inlet straight line segment and an axial direction, an angle between an intake cylinder outer flow channel inlet straight line segment and an axial direction, a radial coordinate of an intersection point between a support plate and the intake cylinder inner flow channel in the intake cylinder flow channel, an axial length of an intake cylinder inner flow channel outlet straight line segment, an axial distance between a starting point of the intake cylinder outer flow channel inlet straight line segment and point a, a ratio of a tangent circle area at an inlet of the flow channel to a tangent circle area at an outlet, and point a is a control point on an inlet outer flow channel of a compressor connected to the intake cylinder.

9. An electronic device, comprising: The system comprises: Memory, a processor, and a computer program stored on the memory and loadable on the processor, the processor implementing the method as claimed in any one of claims 1-7 when executing the program.

10. A computer-readable storage medium having stored thereon a computer program, characterized in that, The program is executed by the processor to implement the method as claimed in any one of claims 1-7.

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