CN104482233A - Profile design method of valve plug of conical throttle valve with controlled pressure differential characteristics - Google Patents
Profile design method of valve plug of conical throttle valve with controlled pressure differential characteristics Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
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Abstract
本发明涉及一种锥形节流阀可控压差特性阀芯型面设计方法，通过控制锥形节流阀喉口面积完成节流阀阀芯型面设计，旨在提升不可压流动中锥形节流阀阀芯型面设计对节流阀压差特性的控制能力。本发明的锥形节流阀阀芯型面设计方法通过建立不可压流动中锥形节流阀压差、节流阀喉口面积、节流阀阀芯与壳体相对位移量之间的数学关系式，依据节流阀压差特性的要求控制不同阀芯位置下的喉口面积，实现对节流阀阀芯型面的设计，避免了传统设计方法中反复循环迭代的过程，可大幅提升锥形节流阀阀芯型面设计的效率，适用于不可压流场的锥形节流阀阀芯型面设计。
The invention relates to a method for designing the spool profile of a conical throttle valve with controllable pressure difference characteristics. By controlling the throat area of the conical choke valve, the spool profile design of the choke valve is completed, aiming at improving the cone in the incompressible flow. The control ability of the shape design of the throttle valve spool to the differential pressure characteristics of the throttle valve. The method for designing the spool profile of the conical throttle valve of the present invention establishes the mathematical relationship between the pressure difference of the conical choke valve in the incompressible flow, the throat area of the choke valve, and the relative displacement between the spool of the choke valve and the housing. Relational formula, according to the requirements of the pressure difference characteristics of the throttle valve, the throat area under different spool positions is controlled to realize the design of the throttle valve spool profile, avoiding the process of repeated iterations in the traditional design method, which can greatly improve The efficiency of the profile design of the conical throttle valve core is suitable for the profile design of the conical throttle valve core in the incompressible flow field.
Description
技术领域technical field
本发明涉及管道流动中的锥形节流阀设计领域，是一种可依据节流阀压差特性需求进行锥形节流阀阀芯造型的方法，具体来说是一种锥形节流阀可控压差特性阀芯型面设计方法。The invention relates to the design field of a conical throttle valve in pipeline flow, and is a method for modeling the spool of a conical throttle valve according to the pressure difference characteristic requirements of the throttle valve, specifically a conical throttle valve Controllable differential pressure characteristic spool profile design method.
背景技术Background technique
在管道流动中锥形节流阀的使用十分常见，不仅广泛用于工业生产领域，亦在各类流体试验装置中得以大量应用。节流阀进出口截面静压差随节流阀开度的变化规律，也即节流阀的压差特性，主要有线性压差特性、等百分比压差特性、抛物线压差特性与快开压差特性等四种。四种压差特性对应下的节流阀，其随开度变化的节流规律存在显著区别，可满足不同应用场合的节流规律需求。而节流阀的压差特性作为其固有特性，取决于节流阀的阀芯形状。为此，如何依据节流阀的压差特性需求，设计出合理的阀芯形状成为节流阀设计中的重要环节。然而，现有的锥形节流阀阀芯型面设计方法，采用初步造型、压差特性核算、造型优化的循环迭代方式，无法在设计环节中直接引入节流阀压差特性对阀芯型面的影响，很大程度上限制了锥形节流阀阀芯型面设计的效率。The use of conical throttle valves in pipeline flow is very common, not only widely used in industrial production fields, but also widely used in various fluid test devices. The change law of the static pressure difference between the inlet and outlet sections of the throttle valve with the opening of the throttle valve, that is, the pressure difference characteristics of the throttle valve, mainly includes linear pressure difference characteristics, equal percentage pressure difference characteristics, parabolic pressure difference characteristics and quick opening pressure characteristics. There are four kinds of poor characteristics. The throttle valves corresponding to the four pressure differential characteristics have significant differences in the throttling laws that vary with the opening degree, which can meet the throttling law requirements of different applications. The differential pressure characteristic of the throttle valve is its inherent characteristic, which depends on the shape of the spool of the throttle valve. For this reason, how to design a reasonable spool shape according to the differential pressure characteristics of the throttle valve has become an important link in the design of the throttle valve. However, the existing design method for the spool profile of the conical throttle valve adopts the iterative method of preliminary modeling, differential pressure characteristic calculation, and modeling optimization, and cannot directly introduce the influence of the differential pressure characteristic of the throttle valve on the spool type in the design process. The influence of the surface greatly limits the efficiency of the surface design of the conical throttle valve spool.
发明内容Contents of the invention
针对上述问题，本发明提出了一种高效的锥形节流阀阀芯型面设计方法，该阀芯型面设计方法在设计环节中直接引入节流阀压差特性对阀芯型面的影响，通过建立节流阀压差、节流阀喉口面积、节流阀阀芯与壳体相对位移之间的数学关系式，实现阀芯型面一次造型即可满足节流阀的压差特性，避免了传统设计方法中反复循环迭代的过程。因此，这种设计方法可大幅提升锥形节流阀阀芯型面设计的效率。In view of the above problems, the present invention proposes an efficient design method for the spool profile of the conical throttle valve, which directly introduces the influence of the differential pressure characteristics of the throttle valve on the spool profile in the design process , by establishing the mathematical relationship between the pressure difference of the throttle valve, the area of the throat of the throttle valve, and the relative displacement between the throttle valve core and the shell, the valve core profile can be satisfied with the differential pressure characteristics of the throttle valve by one-time modeling , avoiding the process of repeated iterations in the traditional design method. Therefore, this design method can greatly improve the efficiency of the design of the spool profile of the conical throttle valve.
为实现以上技术目的，本发明的节流阀阀芯型面设计方法通过以下技术方案实行：一种锥形节流阀可控压差特性阀芯型面设计方法，所述锥形节流阀包括壳体和阀芯，所述阀芯的型面和壳体的内壁面均为回转面，其特征在于，所述的阀芯型面设计方法包括如下步骤：In order to achieve the above technical objectives, the throttle valve spool profile design method of the present invention is implemented through the following technical solutions: a method for designing the spool profile of a conical throttle valve with controllable pressure difference characteristics, the conical throttle valve It includes a shell and a spool, and the profile of the spool and the inner wall of the shell are both revolving surfaces. It is characterized in that the method for designing the profile of the spool includes the following steps:
SS1.根据设计要求确定节流阀压差特性，所述节流阀压差特性为线性压差特性、等百分比压差特性、抛物线压差特性或快开压差特性；SS1. Determine the differential pressure characteristics of the throttle valve according to the design requirements, and the differential pressure characteristics of the throttle valve are linear differential pressure characteristics, equal percentage differential pressure characteristics, parabolic differential pressure characteristics or quick opening differential pressure characteristics;
SS2.建立不可压流动中锥形节流阀压差ΔP、节流阀喉口面积At、节流阀阀芯与壳体相对位移量L之间的数学关系式；SS2. Establish the mathematical relationship between the pressure difference ΔP of the conical throttle valve in the incompressible flow, the throttle valve throat area A t , and the relative displacement L between the throttle valve core and the shell;
SS3.依据节流阀压差特性和所述数学关系式确定不同阀芯位置下的喉口面积At；SS3. Determine the throat area A t under different spool positions according to the differential pressure characteristics of the throttle valve and the mathematical relationship;
SS4.在不同阀芯位置下围绕节流阀阀芯的轴线构建等喉口面积回转面，在节流阀同一纵剖面内阀芯与壳体各相对位移下等喉口面积回转面的母线形成等喉口面积曲线簇，所述等喉口面积回转面的任一纬圆与节流阀壳体内壁面喉口纬圆形成的流通面积等于该位置下的节流阀喉口面积At；SS4. Construct a constant throat area revolving surface around the axis of the throttle valve spool at different spool positions, and form a generatrix of the equal throat area revolving surface under the relative displacements of the valve core and the housing in the same longitudinal section of the throttle valve A cluster of equal-throat area curves, the flow area formed by any latitudinal circle on the surface of revolution of equal-throat area and the throat latitude circle on the inner wall surface of the throttle valve housing is equal to the throat area A t of the throttle valve at this position;
SS5.以节流阀阀芯全行程范围内等喉口面积曲线簇的内切线构成节流阀阀芯的回转面母线，由此完成节流阀阀芯型面的设计。SS5. Inner tangents of the throttle valve spool curves with equal throat area within the full stroke range constitute the busbar of the rotary surface of the throttle valve spool, thereby completing the design of the throttle valve spool profile.
其中，所述不可压流动为工作流体马赫数Ma≤0.3的流动，所述节流阀压差为入口截面工作流体平均静压与出口截面工作流体平均静压之差，所述入口截面位于节流阀喉口纬圆上游3～5倍喉口纬圆半径处，所述出口截面位于节流阀喉口纬圆下游5～10倍喉口纬圆半径处，所述节流阀喉口截面为节流阀流体通道内流通面积最小的截面，所述节流阀喉口截面在阀芯全行程范围内均通过节流阀壳体内壁面的喉口纬圆，所述喉口纬圆为节流阀阀芯全行程范围内各喉口截面通过的节流阀壳体内壁面上的同一纬圆。Wherein, the incompressible flow is a flow with Mach number Ma≤0.3 of the working fluid, the pressure difference of the throttle valve is the difference between the average static pressure of the working fluid at the inlet section and the average static pressure of the working fluid at the outlet section, and the inlet section is located at the throttle valve. 3 to 5 times the radius of the throat latitude circle upstream of the flow valve throat, the outlet section is located at 5 to 10 times the throat latitude circle radius downstream of the throttle valve throat latitude circle, the throttle valve throat section It is the cross-section with the smallest flow area in the fluid channel of the throttle valve. The throat cross-section of the throttle valve passes through the latitude circle of the throat of the inner wall of the throttle valve housing within the full stroke range of the valve core. The latitude circle of the throat is the knot The same latitudinal circle on the inner wall surface of the throttle valve housing that each throat section passes through within the full stroke range of the throttle valve core.
本发明所述的阀芯型面设计方法可满足线性、等百分比、抛物线与快开等四种压差特性要求下的锥形节流阀阀芯型面设计。The spool profile design method described in the present invention can satisfy the spool profile design of the conical throttle valve under the requirements of four pressure difference characteristics: linear, equal percentage, parabolic and quick opening.
所述锥形节流阀的内部流动为马赫数Ma≤0.3的不可压流动。The internal flow of the conical throttle valve is an incompressible flow with Mach number Ma≤0.3.
所述锥形节流阀的阀芯型面为回转面，所述锥形节流阀的壳体内壁面为回转面。The valve core profile of the conical throttle valve is a rotary surface, and the inner wall surface of the housing of the conical throttle valve is a rotary surface.
所述节流阀喉口截面在阀芯全行程范围内均通过节流阀壳体内壁面的喉口纬圆，所述喉口纬圆为节流阀阀芯全行程范围内各喉口截面通过的节流阀壳体内壁面上的同一纬圆。The throat section of the throttle valve passes through the latitude circle of the throat on the inner wall surface of the throttle valve housing within the full stroke range of the spool, and the latitude circle of the throat is the passage of each throat section within the full stroke range of the spool of the throttle valve. The same latitudinal circle on the inner wall of the throttle valve housing.
本发明所述的阀芯型面设计方法通过建立不可压流动中锥形节流阀压差、节流阀喉口面积、节流阀阀芯与壳体相对位移量之间的数学关系式，依据节流阀压差特性的要求控制不同阀芯位置下的喉口面积，实现对节流阀阀芯型面的设计。The valve core profile design method of the present invention establishes the mathematical relationship between the pressure difference of the conical throttle valve in the incompressible flow, the throat area of the throttle valve, and the relative displacement between the throttle valve core and the housing, According to the requirements of the differential pressure characteristics of the throttle valve, the throat area under different spool positions is controlled to realize the design of the spool profile of the throttle valve.
所述阀芯型面设计中，节流阀压差ΔP与喉口面积At满足ΔP＝ρvout 2·(Aout/At-1)的数学关系式，其中ρ为节流阀内工作流体密度、vout为节流阀出口截面工作流体平均速度、Aout为节流阀出口截面面积。In the design of the spool profile, the pressure difference ΔP of the throttle valve and the throat area A t satisfy the mathematical relationship of ΔP=ρv out 2 ·(A out /A t -1), where ρ is the throttle valve internal working Fluid density, v out is the average velocity of the working fluid at the outlet section of the throttle valve, and A out is the cross-sectional area of the throttle valve outlet.
所述阀芯型面设计中，等百分比压差特性节流阀喉口面积At、阀芯与壳体相对位移量L满足At＝Aout/(eaL+b+1)的数学关系式，其中e为自然底数；a、b为常量，由节流阀阀芯与壳体最大、最小相对位移下的压差大小确定。In the surface design of the spool, the throttle valve throat area A t with equal percentage differential pressure characteristics and the relative displacement L between the spool and the housing satisfy the mathematical relationship of A t =A out /(e aL+b +1) Formula, where e is the natural base number; a and b are constants, which are determined by the pressure difference between the throttle valve spool and the shell at the maximum and minimum relative displacements.
所述阀芯型面设计中，线性压差特性/抛物线压差特性/快开压差特性节流阀喉口面积At、阀芯与壳体相对位移量L满足其中n为特性系数，n＝0为线性压差特性，n＝1/2为抛物线压差特性，n＝-1为快开压差特性；a、b为常量，由节流阀阀芯与壳体最大、最小相对位移下的压差大小确定。In the surface design of the spool, the linear differential pressure characteristic/parabolic differential pressure characteristic/quick-opening differential pressure characteristic throttle valve throat area A t and the relative displacement L between the valve core and the housing satisfy Among them, n is the characteristic coefficient, n=0 is the linear pressure difference characteristic, n=1/2 is the parabolic pressure difference characteristic, n=-1 is the quick opening pressure difference characteristic; a and b are constants, which are determined by the throttle valve core and The pressure difference under the maximum and minimum relative displacement of the shell is determined.
所述阀芯型面设计中，在节流阀阀芯与壳体相对位移L下，围绕节流阀阀芯的轴线构建等喉口面积回转面，所述等喉口面积回转面的任一纬圆与节流阀壳体内壁面喉口纬圆形成的流通面积等于喉口面积At，在节流阀同一纵剖面内阀芯与壳体各相对位移下等喉口面积回转面的母线形成等喉口面积曲线簇。In the design of the spool profile, under the relative displacement L between the throttle valve spool and the housing, an equal throat area revolving surface is constructed around the axis of the throttle valve spool, any of the equal throat area revolving surfaces The flow area formed by the latitude circle and the throat latitude circle on the inner wall surface of the throttle valve housing is equal to the throat area A t , and the generatrix of the rotary surface with equal throat area is formed in the same longitudinal section of the throttle valve under the relative displacements of the valve core and the housing. A family of curves with equal throat area.
所述阀芯型面设计中，节流阀阀芯型面为回转面，回转面的母线为节流阀阀芯全行程范围内等喉口面积曲线簇的内切线。In the profile design of the spool, the profile of the spool of the throttle valve is a rotary surface, and the generatrix of the rotary surface is the inscribed line of the cluster of constant throat area curves within the full stroke range of the spool of the throttle valve.
本发明的锥形节流阀可控压差特性阀芯型面设计方法与现有的方法相比较有如下有益效果：在锥形节流阀阀芯型面设计中，通过建立节流阀压差、节流阀喉口面积、节流阀阀芯与壳体相对位移之间的数学关系式，依据节流阀压差特性控制不同阀芯位置下的喉口面积，进而完成节流阀阀芯型面设计，以实现阀芯型面一次造型即可满足节流阀压差特性的要求，避免了传统设计方法中反复循环迭代的过程，可大幅提升锥形节流阀阀芯型面设计的效率。Compared with the existing method, the method for designing the spool profile of the conical throttle valve with controllable pressure difference has the following beneficial effects: in the design of the spool profile of the conical throttle valve, by establishing the throttle valve pressure difference, throttle valve throat area, and the mathematical relationship between the throttle valve spool and the relative displacement of the shell, and control the throat area at different spool positions according to the pressure difference characteristics of the throttle valve, and then complete the throttle valve The design of the core shape can meet the requirements of the pressure difference characteristics of the throttle valve in a single shape, avoiding the process of repeated iterations in the traditional design method, and can greatly improve the design of the cone throttle valve core shape s efficiency.
附图说明Description of drawings
图1为锥形节流阀三维纵剖面图示；Fig. 1 is a three-dimensional longitudinal section diagram of a conical throttle valve;
图2为锥形节流阀二维纵剖面图示；Fig. 2 is a two-dimensional longitudinal section diagram of a conical throttle valve;
图3为本发明所述阀芯型面设计方法中尺寸参数示意图；Fig. 3 is a schematic diagram of size parameters in the spool profile design method of the present invention;
图4为本发明所述阀芯型面设计方法中阀芯型面造型示意图；Fig. 4 is the schematic diagram of spool profile modeling in the spool profile design method of the present invention;
具体实施方式Detailed ways
为使本发明的技术目的、技术方案及技术优点更加明晰，下面参照附图并列举实施例子，对本发明进一步详细说明。In order to make the technical purpose, technical solution and technical advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples of implementation.
图1、图2分别为一个典型的锥形节流阀三维纵剖面图、二维纵剖面图。该锥形节流阀由阀芯1和壳体2构成轴对称的流体通道，其中阀芯型面11为回转面，壳体内壁面21也为回转面。阀芯1可沿着图1中双箭头所示的方向移动，在阀芯1移动过程中，阀芯型面11上的某一纬圆与壳体内壁面21上的固定纬圆构成流通面积最小的喉口截面3(如图2所示)。该喉口截面3在阀芯1全行程范围内均通过节流阀壳体内壁面同一纬圆，也即图1中所示的节流阀壳体内壁面喉口纬圆22。Figure 1 and Figure 2 are respectively a three-dimensional longitudinal section view and a two-dimensional longitudinal section view of a typical conical throttle valve. The conical throttle valve consists of a valve core 1 and a housing 2 forming an axisymmetric fluid channel, wherein the valve core profile 11 is a rotary surface, and the inner wall surface 21 of the housing is also a rotary surface. The spool 1 can move along the direction shown by the double arrow in Figure 1. During the movement of the spool 1, a certain weft circle on the spool surface 11 and a fixed weft circle on the inner wall surface 21 of the housing form the smallest flow area. Throat section 3 (as shown in Figure 2). The throat section 3 passes through the same latitudinal circle on the inner wall surface of the throttle valve housing within the entire stroke range of the valve core 1 , that is, the throat latitude circle 22 on the inner wall surface of the throttle valve housing shown in FIG. 1 .
图3为所述节流阀阀芯型面设计方法中的尺寸参数示意图，进口截面4位于节流阀壳体内壁面喉口纬圆22上游5倍喉口纬圆半径r处，出口截面5位于节流阀壳体内壁面喉口纬圆22下游10倍喉口纬圆半径r处。所述节流阀压差ΔP为进口截面4与出口截面5的静压差，所述阀芯型面设计方法中，节流阀压差ΔP与喉口面积At满足ΔP＝ρvout 2·(Aout/At-1)的数学关系式，其中ρ为节流阀内工作流体密度、vout为节流阀出口截面5工作流体平均速度、Aout为节流阀出口截面5的面积。Fig. 3 is a schematic diagram of the size parameters in the throttle valve spool profile design method, the inlet section 4 is located at the upstream of the throat weft circle 22 on the inner wall of the throttle valve housing, and the outlet section 5 is located at 10 times the radius r of the throat weft circle downstream of the throat weft circle 22 on the inner wall of the throttle valve housing. The pressure difference ΔP of the throttle valve is the static pressure difference between the inlet section 4 and the outlet section 5. In the valve core profile design method, the pressure difference ΔP of the throttle valve and the throat area A t satisfy ΔP=ρv out 2 · (A out /A t -1), where ρ is the density of the working fluid in the throttle valve, v out is the average velocity of the working fluid at the outlet section 5 of the throttle valve, and A out is the area of the outlet section 5 of the throttle valve .
作为一种实施方式，例如选取节流阀压差特性为等百分比特性。所述阀芯型面设计方法中，节流阀喉口面积At、阀芯1与壳体2相对位移量L满足At＝Aout/(eaL+b+1)的数学关系式，其中e为自然底数；a、b为常量，由节流阀阀芯1与壳体2最大、最小相对位移下的压差大小确定，分别为-0.017、3.525；Aout为节流阀出口截面面积，大小为0.503m2。As an implementation manner, for example, the differential pressure characteristic of the throttle valve is selected as an equal percentage characteristic. In the spool profile design method, the throat area A t of the throttle valve and the relative displacement L between the spool 1 and the housing 2 satisfy the mathematical relationship of A t =A out /(e aL+b +1), Where e is the natural base number; a and b are constants, which are determined by the pressure difference between the throttle valve spool 1 and the shell 2 at the maximum and minimum relative displacements, which are -0.017 and 3.525 respectively; A out is the throttle valve outlet cross-section The area is 0.503m 2 .
图4为所述设计方法中阀芯型面造型示意图，得到不同相对位移L的喉口面积At后，针对节流阀阀芯与壳体某一相对位置ln，围绕节流阀阀芯的轴线AX构建等喉口面积回转面，所述等喉口面积回转面的任一纬圆与节流阀壳体内壁面喉口纬圆形成的流通面积等于喉口面积Atn，在节流阀纵剖面内阀芯与壳体各相对位置l0、l1、l2……ln下，各等喉口面积回转面的母线形成等喉口面积曲线簇s0、s1、s2……sn。优选地，所述节流阀阀芯型面11为回转面，回转面的母线为节流阀阀芯全行程范围内等喉口面积曲线簇s0、s1、s2……sn的内切线。Fig. 4 is a schematic diagram of the shape of the spool in the design method. After obtaining the throat area A t of different relative displacements L, for a certain relative position l n of the spool of the throttle valve and the housing, surrounding the spool of the throttle valve The axis AX of the same throat area constructs a surface of revolution with equal throat area, and the flow area formed by any latitude circle of the surface of rotation with equal throat area and the throat latitude circle of the inner wall surface of the throttle valve housing is equal to the throat area A tn . In the longitudinal section, relative positions l 0 , l 1 , l 2 . … s n . Preferably, the profile surface 11 of the throttle valve spool is a rotary surface, and the generatrix of the rotary surface is a cluster of equal throat area curves s 0 , s 1 , s 2 ... s n within the full stroke range of the throttle valve spool. Inscribed line.
数值计算结果显示，节流阀阀芯在全行程范围内由相同位移量Δl引起的节流阀压差相对变化量(ΔPn-ΔPn-1)/ΔPn-1为0.75～0.78，最大相对偏差为3.8％。数值计算结果表明，设计完成的节流阀阀芯型面使得所述的锥形节流阀保持了良好的等百分比压差特性，与设计之初要求的锥形节流阀压差特性一致。所以，本发明所述锥形节流阀阀芯型面设计方法，可在阀芯型面一次造型中较好地控制节流阀的压差特性，避免了反复循环迭代的设计过程，可大幅提升锥形节流阀阀芯型面设计的效率。Numerical calculation results show that the relative change in pressure difference of the throttle valve (ΔP n -ΔP n-1 )/ΔP n-1 caused by the same displacement Δl in the full stroke range of the throttle valve core is 0.75-0.78, the maximum The relative deviation is 3.8%. Numerical calculation results show that the designed spool profile of the throttle valve makes the conical throttle valve maintain a good equal percentage differential pressure characteristic, which is consistent with the pressure differential characteristic of the conical throttle valve required at the beginning of the design. Therefore, the method for designing the spool profile of the conical throttle valve in the present invention can better control the pressure difference characteristics of the throttle valve in one-time molding of the spool profile, avoiding the design process of repeated cycles and iterations, and can significantly Improve the efficiency of conical throttle valve plug profile design.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the range.
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| CN106089855A (en) * | 2016-06-13 | 2016-11-09 | 哈尔滨工业大学 | The hydraulic power optimization method of hydraulic valve |
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| WO2022183566A1 (en) * | 2021-03-02 | 2022-09-09 | 中国石油大学(华东) | Method for designing valve port structure of oscillating shear valve of continuous wave generator, and oscillating shear valve |
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