An Optimal Design Method for Truncated Cone Valve Core with High Linear Flow

Abstract

The present invention relates to an optimization design method for a truncated cone valve core with high linear flow, comprising: constructing truncated cone valve core parameters in a coordinate system; constructing a NURBS curve parameter equation of a curved truncated cone valve core generatrix; determining a flow cross-sectional equation applicable to the curved truncated cone valve core generatrix; determining a control point weight that makes the flow cross-sectional area and the opening linearly related; substituting the control point weight into the NURBS curve parameter equation of the curved truncated cone valve core generatrix to obtain an optimized curved truncated cone valve core generatrix; and obtaining an optimized truncated cone valve core according to the optimized curved truncated cone valve core generatrix. The beneficial effects of the present invention are as follows: the present invention optimizes the generatrix shape of the truncated cone valve core by adopting a NURBS curve parameter equation to achieve precise control and adjustment of the valve core shape. Moreover, by optimizing the control point weight of the NURBS curve, a linear relationship is formed between the flow cross-sectional area and the valve core opening.

Description

Technical Field

[0001] The invention relates to the technical field of proportional valves, and more specifically, to a design method for a valve core of a high linear truncated cone proportional valve. Background Art

[0002] In the field of fluid control, valves are key components for regulating fluid flow, pressure and direction, and their performance is crucial to ensuring the stability and efficiency of the entire fluid system. The design and manufacturing quality of valves directly affect the operation of the fluid system, including the accuracy of flow control, the stability of pressure and the flexibility of flow direction. Among the many types of valves, truncated cone valves are popular due to their unique structural advantages. The structure of the truncated cone valve is relatively simple, which makes it low cost in both manufacturing and maintenance. At the same time, the truncated cone valve has a wide range of adjustment and can adapt to different fluid control needs, so it occupies an important position in a variety of industrial applications.

[0003] However, despite the many advantages of the truncated cone valve, the traditional linear generatrix truncated cone valve core still has an inherent flaw in its design. This flaw is mainly reflected in the low linear correlation between the flow rate and the opening of the valve core. When the valve opening changes, the flow response is not sensitive and accurate enough. This nonlinear relationship poses a challenge to high-precision fluid control, because in practical applications, the valve is often required to provide a stable and predictable flow response. Summary of the invention

[0004] The purpose of the invention is to address the deficiencies of the prior art and to propose a method for designing a high linear truncated cone proportional valve core.

[0005] In a first aspect, a method for optimizing the design of a truncated cone valve core with high linear flow is provided, comprising:

[0006] S1. Construct the truncated cone valve core parameters in the coordinate system;

[0007] S2. According to the truncated cone valve core parameters, construct a NURBS curve parameter equation of the truncated cone valve core generatrix; the NURBS curve parameter equation includes control points, basis functions and undetermined control point weights; the coordinates of the control points and the values ​​of the basis functions correspond to the truncated cone valve core parameters;

[0008] S3, determining a flow cross-section equation applicable to the generatrix of the curved truncated cone valve core according to the parameters of the truncated cone valve core and the NURBS curve parameter equation of the generatrix of the curved truncated cone valve core;

[0009] S4, according to the flow cross-section equation applicable to the generatrix of the curved truncated cone valve core, determine the weight of the control point that makes the flow cross-section area and the opening degree have a linear relationship;

[0010] S5, substituting the control point weight into the NURBS curve parameter equation of the curved truncated cone valve core generatrix to obtain an optimized curved truncated cone valve core generatrix;

[0011] S6. Obtain an optimized truncated cone valve core according to the optimized truncated cone valve core generatrix.

[0012] Preferably, in S1, the truncated cone valve core parameters include the radius of the upper surface of the cone , the radius of the cone's lower surface , the height of the truncated cone generatrix , truncated cone generatrix inclination and the bottom diameter of the truncated cone valve core .

[0013] As a preferred embodiment, in S2, the NURBS curve parameter equation of the truncated cone valve core generatrix is:

[0014]

[0015] in, Represents the horizontal coordinate value in the coordinate system, , , , , represents the control point, , , , , is the weight value corresponding to the control point, Represented as a basis function of order n.

[0016] Preferably, in S3, the flow cross-section equation applicable to the curved truncated cone busbar is:

[0017]

[0018] in, represents the flow cross-sectional area, is the offset opening; when the valve port is at At, the actual valve opening is , then the bias opening The generatrix of the truncated cone is Tangent and straight line at The horizontal coordinate of the intersection point and The difference.

[0019] As a preferred embodiment, in S4, when the flow cross section is about The derivative of is a constant When , the flow cross-sectional area and the opening will show a linear relationship, and the derivative equation is expressed as:

[0020]

[0021] Substitute the NURBS curve parameter equation of the truncated cone valve core generatrix into the derivative equation to determine the weight of the control point that makes the flow cross-sectional area and the opening degree have a linear relationship.

[0022] In a second aspect, a truncated cone valve core optimization design system with high linear flow is provided, which is used to execute any of the truncated cone valve core optimization design methods with high linear flow described in the first aspect, including:

[0023] A first construction module is used to construct the truncated cone valve core parameters in a coordinate system;

[0024] The second construction module is used to construct a NURBS curve parameter equation of the truncated cone valve core generatrix according to the truncated cone valve core parameters; the NURBS curve parameter equation includes control points, basis functions and undetermined control point weights; the coordinates of the control points and the values ​​of the basis functions correspond to the truncated cone valve core parameters;

[0025] A first determination module is used to determine a flow cross-section equation applicable to a curved truncated cone valve core busbar according to the truncated cone valve core parameters and a NURBS curve parameter equation of the curved truncated cone valve core busbar;

[0026] The second determination module is used to determine the weight of the control point that makes the flow cross-sectional area and the opening degree have a linear relationship according to the flow cross-sectional equation applicable to the generatrix of the curved truncated cone valve core;

[0027] A first acquisition module is used to substitute the control point weight into the NURBS curve parameter equation of the curved truncated cone valve core generatrix to obtain an optimized curved truncated cone valve core generatrix;

[0028] The second acquisition module is used to acquire the optimized truncated cone valve core according to the optimized truncated cone valve core generatrix.

[0029] In a third aspect, a computer storage medium is provided, wherein a computer program is stored in the computer storage medium; when the computer program is executed on a computer, the computer executes any of the methods for optimizing the design of a truncated cone valve core with a high linear flow rate as described in the first aspect.

[0030] In a fourth aspect, a truncated cone valve core is provided, wherein the truncated cone valve core is obtained by any of the optimization design methods for a truncated cone valve core with a high linear flow rate described in the first aspect.

[0031] In a fifth aspect, a truncated cone proportional valve is provided, comprising a valve sleeve, a truncated cone valve core and a valve cover;

[0032] Among them, the truncated cone valve core is obtained by any of the optimization design methods for the truncated cone valve core with high linear flow in the first aspect; the truncated cone valve core is arranged in the valve sleeve, and the truncated cone valve core is connected to one end of the valve sleeve; the valve cover is arranged at one end of the valve sleeve away from the truncated cone valve core.

[0033] The beneficial effect of the present invention is that the present invention can achieve accurate control and adjustment of the valve core shape by optimizing the generatrix shape of the truncated cone valve core by using the NURBS curve parameter equation. In addition, by optimizing the control point weights of the NURBS curve, a linear relationship is formed between the flow cross-sectional area and the valve core opening. In industrial production, linear flow characteristics are crucial for accurately controlling parameters such as fluid flow and pressure, and can significantly improve product quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a parameter diagram of a traditional truncated cone valve core;

[0035] Figure 2 A flowchart of a method for optimizing the design of a truncated cone valve core with high linear flow;

[0036] Figure 3 It is a parameter diagram of the curved truncated cone valve core;

[0037] Figure 4 This is a schematic diagram of the external structure of the proportional valve;

[0038] Figure 5 It is a schematic diagram of the internal structure of the proportional valve;

[0039] Figure 6a It is a schematic diagram of a nonlinear change law of the cross-sectional area of ​​the flow;

[0040] Figure 6b It is another schematic diagram of the variation law of nonlinear flow cross-sectional area;

[0041] Figure 7 It is a schematic diagram of the linear change law of the flow cross-sectional area;

[0042] Figure 8 It is a schematic diagram of the generatrix of a truncated cone;

[0043] Fig. 9 It is a schematic diagram of the change of the flow cross section with the opening;

[0044] Explanation of the reference numerals in the accompanying drawings: valve core a, valve port b, valve sleeve 1, truncated cone valve core 2, return spring 3, power spring 4, coil 5, electromagnetic moving iron 6, lead wire 7, spring coil 8, coil frame 9, movable push rod 10, first positioning port 11, second positioning port 12, valve cover 13, inlet 14, outlet 15. DETAILED DESCRIPTION

[0045] The present invention is further described below in conjunction with embodiments. The description of the following embodiments is only used to help understand the present invention. It should be noted that for ordinary persons in the art, without departing from the principle of the present invention, the present invention can also be modified in some ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0046] Embodiment 1:

[0047] like Figure 1 As shown, the conventional truncated cone valve core adopts a straight line generatrix, but there is a problem that the linear correlation between flow and opening is low. To solve this problem, Example 1 of the present application provides an optimization design method for a truncated cone valve core with high linear flow, such as Figure 2 As shown, including:

[0048] S1. Construct the truncated cone valve core parameters in the coordinate system.

[0049] like Figure 1 As shown, the horizontal coordinate of the coordinate system is , the vertical axis is The parameters of the truncated cone valve core constructed in this coordinate system include the radius of the upper surface of the cone. , the radius of the cone's lower surface , the height of the truncated cone generatrix , truncated cone generatrix inclination and the bottom diameter of the truncated cone valve core .

[0050] S2. According to the truncated cone valve core parameters, a NURBS curve parameter equation of the truncated cone valve core generatrix is ​​constructed; the NURBS curve parameter equation includes control points, basis functions and undetermined control point weights; the coordinates of the control points and the values ​​of the basis functions correspond to the truncated cone valve core parameters.

[0051] exist Figure 1 The structure of the truncated cone valve core is based on the parameters of the structure, such as Figure 3 As shown, the present application optimizes the straight generatrix of the traditional truncated cone valve into a curved generatrix, and uses the NURBS curve parameter equation to represent the curved truncated cone valve core generatrix:

[0052]

[0053] in, Represents the horizontal coordinate value in the coordinate system, , , , , represents the control point, , , , , is the weight value corresponding to the control point, Represented as a basis function of order n.

[0054] It can be seen that the NURBS curve parameter equation is related to the control points, the weights of each control point, and the basis function. It should be noted that when the valve core structure is constant, that is, the parameters , , If the value of is certain, the control points and basis functions will be determined accordingly, but the weights of each control point cannot be determined.

[0055] For example, the selected control point , , , , . In addition, the basis functions are derived as follows:

[0056]

[0057]

[0058] Node Vector , , , , , , , , The node vector can be used to derive the basis function, and the final result is as follows:

[0059]

[0060]

[0061] Then, substituting the basis function and the coordinates of the control points into the NURBS curve parameter equation, we can get:

[0062] when When , the parameter equation of the generatrix of the curved truncated cone valve core is:

[0063]

[0064] in, ; ; ; ;

[0065] ; ; ; .

[0066] when When , the parameter equation of the generatrix of the curved truncated cone valve core is:

[0067]

[0068] in,

[0069] ; ;

[0070] ; ;

[0071] ; ; ; .

[0072] when , hour, , With , The same functional relationship type; when , hour, Therefore, the actual opening of the truncated cone valve core is only Valid within.

[0073] S3. Determine a flow cross-section equation applicable to the generatrix of the curved truncated cone valve core according to the parameters of the truncated cone valve core and the NURBS curve parameter equation of the generatrix of the curved truncated cone valve core.

[0074] like Figure 1 and Figure 3 As shown in the figure, a represents the valve core and b represents the valve port. The flow rate through the valve port b can be described by the flow equation:

[0075]

[0076] in, For flow, is the fluid coefficient, and its value is affected by the properties of the fluid; is the area of ​​the flow cross section; is the pressure difference between the inlet and outlet; is the liquid density. , , It is affected by working conditions and has nothing to do with the structure of the truncated cone valve. Therefore, if you want to control the flow rate through the truncated cone valve structure, you need to use the parameter equation of the curved truncated cone valve core generatrix to perform linear optimization design of the flow cross-sectional area.

[0077] Figure 1The calculation formula for the flow cross-sectional area of ​​the traditional truncated cone valve core shown is:

[0078]

[0079] in, is the opening value of the traditional truncated cone valve, is the initial truncated cone valve bottom diameter, is the generatrix inclination angle of the straight cone valve.

[0080] However, after optimization by NURBS theory, the truncated cone generatrix is ​​no longer a straight line but a curve. The opening value of the traditional truncated cone valve is no longer equal to the actual opening value of the valve port, and the above formula is no longer applicable. Replacement opening , Figure 3 The geometric relationship between the offset opening and the opening is shown, where is the size of the valve port diameter, is the height of the generatrix of the truncated cone, is the maximum effective opening, is the actual opening, is the bias opening, is the valve core diameter, is the valve port horizontal coordinate, It is the horizontal coordinate of the intersection point where the valve port passes through the vertex and the generatrix of the truncated cone intersects perpendicularly. The generatrix of the truncated cone is Tangent and straight line at The horizontal coordinate of the intersection point.

[0081] Please continue to refer to Figure 3 , when the actual valve opening is When the valve port is located at Bias opening The generatrix of the truncated cone is Tangent and straight line at The horizontal coordinate of the intersection point and The difference between the two. Then the valve core with a curved truncated cone generatrix is The calculation formula of the flow cross-sectional area at is modified as follows:

[0082]

[0083] in, is the horizontal coordinate value of the point on the generatrix of the truncated cone, The truncated cone generatrix The opening value at is the NURBS curve generatrix equation.

[0084] Using the above geometric relationship, the flow cross-section equation applicable to the curved cone is proposed:

[0085]

[0086]

[0087]

[0088]

[0089] Furthermore, the bias opening The expression is as follows:

[0090]

[0091] Truncated cone busbar The actual opening The expression is:

[0092]

[0093] in, Indicates the maximum effective opening value.

[0094] The bias opening Substituting the expression into the calculation formula of the flow cross-sectional area of ​​the valve core with a curved truncated cone generatrix, the calculation formula of the flow cross-sectional area of ​​the curved truncated cone at the valve port at t is obtained, which is expressed as:

[0095]

[0096] in is the inclination angle of the truncated cone with respect to function.

[0097] S4. According to the flow cross-section equation applicable to the generatrix of the curved truncated cone valve core, the weight of the control point that makes the flow cross-section area and the opening degree have a linear relationship is determined.

[0098] After determining the flow cross-section equation applicable to the generatrix of the curved truncated cone valve core, the present application derives the equation to obtain the basic conditions for the effective linear optimization design of the traditional truncated cone valve core. The specific derivation process is as follows:

[0099] Will about Take the derivative:

[0100]

[0101]

[0102] Obviously, when the flow cross section is about The derivative of is a constant When , the flow cross section and the opening will show a linear relationship, that is:

[0103]

[0104] Substituting it into the derivative equation, we can get the constraint equation that the flow cross section and the opening are linearly related:

[0105]

[0106] Therefore, the parameter equation of the generatrix of the curved truncated cone valve core is When the above formula is satisfied, the flow cross section and the opening will show a completely linear relationship.

[0107] Assume that each control point has a weight value so that the curved cone generatrix structure determined by the weight value presents a linear relationship within a certain opening range. Substituting the above formula into the parameter equation of the curved truncated cone valve core generatrix of each interval, four equations about weights can be obtained, but there are five weights in total, which cannot be solved. However, due to the particularity of the first control point, the control point is set Weight , from which we start to analyze different intervals separately and obtain the weight values ​​of each control point that can achieve linear optimization.

[0108] S5. Substitute the control point weights into the NURBS curve parameter equation of the curved truncated cone valve core generatrix to obtain an optimized curved truncated cone valve core generatrix.

[0109] S6. Obtain an optimized truncated cone valve core according to the optimized truncated cone valve core generatrix.

[0110] Embodiment 2:

[0111] Based on Example 1, Example 2 of the present application provides a more specific method for optimizing the design of a truncated cone valve core with a high linear flow rate, including:

[0112] Construct the truncated cone valve core parameters in the coordinate system. Figure 1 As shown, the valve core structure parameters , , .

[0113] According to the truncated cone valve core parameters, a NURBS curve parameter equation of the truncated cone valve core generatrix is ​​constructed; and the weight of the control point that makes the flow cross-sectional area and the opening degree linearly related is determined.

[0114] Specifically, according to the parametric equations of the truncated cone curve and the intervals where each equation is located, the effective opening part of the truncated cone generatrix is ​​divided into , , , ,Right now , , , . Let’s discuss each interval in turn:

[0115] when When, due to Possibly interval For any value in , the weight There are infinitely many, but according to NURBS curve theory, one control point can only correspond to one weight value, so there is only one unique Solved is in line with the requirements. For example, Split into 50 Click, and then Substitute the parameter equation of the curved truncated cone valve core generatrix and the constraint equation of the linear relationship between the flow cross section and the opening and solve .

[0116] Specifically, Substituting back the parameter equation of the generatrix of the curved truncated cone valve core, we can get , and then substitute it into the calculation formula of the truncated cone flow cross section of the valve port at t to obtain , and draw the flow cross section at When , the flow cross-sectional area changes. Among them, the fifteenth Points Figure 6a The variation law of the cross-sectional area of ​​the flow is shown; the 30th Points Figure 6b The variation law of the cross-sectional area of ​​the flow is shown in Fig. Figure 6a and Figure 6b It can be seen that between the fifteenth and thirtieth points, there must be a unique So that the solution Meets the requirements. Keep narrowing the existence interval, and finally take the 28th When , and the variation law of the flow cross section is consistent with the linear function Almost completely consistent with Figure 7 shown.

[0117] when In other intervals, when the same method is still used to optimize the flow cross section, the flow cross section change law does not have the above assumptions and laws, so the truncated cone equation constructed using NURBS will Partial linear optimization. In order to obtain the final NURBS curved cone equation, select , , , and finally the equation of the curved truncated cone is:

[0118]

[0119] Its image in the Cartesian coordinate system is as follows Figure 8 In addition, if Figure 4 and Figure 5 As shown, the valve port diameter of the valve sleeve 1 is set to , so that the actual effective opening of the valve core Therefore, the flow rate and opening degree of the valve core 2 in the switching process have a linear relationship. At this point, the linear optimization design of the valve core is completed, and the truncated cone valve core is processed using this equation.

[0120] Furthermore, through the above analysis, it can be seen that the curved truncated cone valve core constructed by the above formula is Sometimes, there are , but the flow cross section that can be used in the flow equation is the flow cross section change law about the opening. Then convert the independent variable t into the actual opening value x, and get the change image of the flow cross section during the opening process of the curved truncated cone valve core, as shown in Fig. 9 As shown. Fig. 9 It can be seen that within the opening range, the change law of the flow cross section is consistent with the current function Almost completely consistent, that is, when The variation law of flow cross section with respect to opening for:

[0121]

[0122] Furthermore, the law of flow rate changing with opening degree is for:

[0123]

[0124] When the working conditions are certain, , is a constant, and the flow opening equation obtained from the above formula will change with the liquid density. There are different flow opening equations for different density, and the relationship with the opening is linear. Therefore, it can be seen that the truncated cone valve core busbar structure determined in this application can be used for high linear flow control of liquids with different densities.

[0125] It should be noted that the parts in this embodiment that are the same or similar to those in Embodiment 1 can be referenced to each other and will not be described in detail in this application.

[0126] Embodiment 3:

[0127] On the basis of embodiments 1 and 2, embodiment 3 of the present application provides a truncated cone proportional valve, such as Figure 4 and Figure 5 As shown, it includes a valve sleeve 1, a truncated cone valve core 2, a return spring 3, a power spring 4, a coil 5, an electromagnetic moving iron 6, a lead wire 7, a spring coil 8, a coil frame 9, a movable push rod 10, a first positioning port 11, a second positioning port 12 and a valve cover 13;

[0128] The truncated cone valve core 2 is obtained by the optimization design method of the truncated cone valve core with high linear flow rate described in Example 1 or 2. The truncated cone valve core 2 is arranged in the valve sleeve 1, and the truncated cone valve core 2 is connected to one end of the valve sleeve 1 and is positioned by a flange structure between the return spring 3 and the power spring 4. The valve cover 13 is arranged at one end of the valve sleeve 1 away from the truncated cone valve core 2.

[0129] The return spring 3 is fixed by the valve sleeve 1 and the spring coil 8, which can apply a rebound force to the valve core 2 to ensure that the valve core 2 can quickly return to its initial state when the electromagnetic force disappears. The power spring 4 is fixed by the valve core flange structure and the coil frame 9. It has a higher elastic coefficient than the return spring 3 and is always in a stretched state. When the electromagnetic moving iron 6 moves under the action of the electromagnetic force, it can provide a large power for the truncated cone valve core 2 so that the truncated cone valve core 2 opens to the corresponding opening. The coil frame 9 is made of plastic and does not have the characteristics of conductivity and magnetic conductivity. It is used to fix the coil 5 and the power spring 4. The coil 5 is fixed to the coil frame 9, which is connected to the lead wire 7 at the valve cover 13. The lead wire 7 can make the coil 5 pass through the alternating current, so that the electromagnetic moving iron 6 generates a magnetic field, drives the movable push rod 10 to move, and then opens the linear truncated cone electromagnetic valve. The center lines of the first positioning port 11 and the second positioning port 12 are colinear, so that the valve cover 13 is completely fixed, so that the lead wire 7 can pass through the valve cover 13 and be led out of the valve sleeve 1. The valve cover 13 has a flange structure for preventing the electromagnetic moving iron 6 and the movable push rod 10 from falling. A lead wire 7 is welded thereon and connected to the coil 5 so as to be connected to alternating current.

[0130] Specifically, the truncated cone proportional valve provided in this embodiment is a truncated cone proportional valve corresponding to the methods provided in Embodiments 1 and 2. Therefore, the parts in this embodiment that are the same or similar to Embodiments 1 and 2 can be referenced to each other and will not be repeated in this application.

Claims

1. A method for optimizing the design of a truncated cone valve core with high linear flow, characterized in that: include: S1. Construct the truncated cone valve core parameters in the coordinate system; S2. According to the truncated cone valve core parameters, construct a NURBS curve parameter equation of the truncated cone valve core generatrix; the NURBS curve parameter equation includes control points, basis functions and undetermined control point weights; the coordinates of the control points and the values ​​of the basis functions correspond to the truncated cone valve core parameters; S3, determining a flow cross-section equation applicable to the generatrix of the curved truncated cone valve core according to the parameters of the truncated cone valve core and the NURBS curve parameter equation of the generatrix of the curved truncated cone valve core; S4, according to the flow cross-section equation applicable to the generatrix of the curved truncated cone valve core, determine the weight of the control point that makes the flow cross-section area and the opening degree have a linear relationship; S5, substituting the control point weight into the NURBS curve parameter equation of the curved truncated cone valve core generatrix to obtain an optimized curved truncated cone valve core generatrix; S6. Obtain an optimized truncated cone valve core according to the optimized truncated cone valve core generatrix.

2. The optimization design method of a truncated cone valve core with high linear flow according to claim 1, characterized in that: In S1, the truncated cone valve core parameters include the radius of the upper surface of the cone , the radius of the cone's lower surface , the height of the truncated cone generatrix , truncated cone generatrix inclination and the bottom diameter of the truncated cone valve core .

3. The optimization design method of a truncated cone valve core with high linear flow according to claim 2, characterized in that: In S2, the NURBS curve parameter equation of the truncated cone valve core generatrix is: ； in, Represents the horizontal coordinate value in the coordinate system, , , , , represents the control point, , , , , is the weight value corresponding to the control point, Represented as a basis function of order n.

4. The optimization design method of a truncated cone valve core with high linear flow according to claim 3, characterized in that: In S3, the flow cross-section equation applicable to the curved truncated cone busbar is: ； in, represents the flow cross-sectional area, is the offset opening; when the valve port is at At, the actual valve opening is , then the bias opening The generatrix of the truncated cone is Tangent and straight line at The horizontal coordinate of the intersection point and The difference.

5. The optimization design method of a truncated cone valve core with high linear flow according to claim 4, characterized in that: In S4, when the flow cross section is about The derivative of is a constant When , the flow cross-sectional area and the opening will show a linear relationship, and the derivative equation is expressed as: ； Substitute the NURBS curve parameter equation of the truncated cone valve core generatrix into the derivative equation to determine the weight of the control point that makes the flow cross-sectional area and the opening degree have a linear relationship.

6. A truncated cone valve core optimization design system with high linear flow, characterized in that: The method for optimizing the design of a truncated cone valve core with high linear flow rate according to any one of claims 1 to 5 comprises: A first construction module is used to construct the truncated cone valve core parameters in a coordinate system; The second construction module is used to construct a NURBS curve parameter equation of the truncated cone valve core generatrix according to the truncated cone valve core parameters; the NURBS curve parameter equation includes control points, basis functions and undetermined control point weights; the coordinates of the control points and the values ​​of the basis functions correspond to the truncated cone valve core parameters; A first determination module is used to determine a flow cross-section equation applicable to a curved truncated cone valve core busbar according to the truncated cone valve core parameters and a NURBS curve parameter equation of the curved truncated cone valve core busbar; The second determination module is used to determine the weight of the control point that makes the flow cross-sectional area and the opening degree have a linear relationship according to the flow cross-sectional equation applicable to the generatrix of the curved truncated cone valve core; A first acquisition module is used to substitute the control point weight into the NURBS curve parameter equation of the curved truncated cone valve core generatrix to obtain an optimized curved truncated cone valve core generatrix; The second acquisition module is used to acquire the optimized truncated cone valve core according to the optimized curved truncated cone valve core generatrix.

7. A computer storage medium, characterized in that: The computer storage medium stores a computer program; when the computer program is run on a computer, the computer executes the method for optimizing the design of a truncated cone valve core with a high linear flow rate as claimed in any one of claims 1 to 5.

8. A truncated cone valve core, characterized in that: The truncated cone valve core is obtained by the optimization design method of the truncated cone valve core with high linear flow rate as claimed in any one of claims 1 to 5.

9. A truncated cone proportional valve, characterized in that: It comprises a valve sleeve (1), a truncated cone valve core (2) and a valve cover (13); The truncated cone valve core (2) is obtained by the optimization design method of a truncated cone valve core with high linear flow according to any one of claims 1 to 5; the truncated cone valve core (2) is arranged in the valve sleeve (1), and the truncated cone valve core (2) is connected to one end of the valve sleeve (1); the valve cover (13) is arranged at one end of the valve sleeve (1) away from the truncated cone valve core (2).

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