CN107654664A - A kind of lower resistance is low to disturb flow resistance regulating valve - Google Patents
A kind of lower resistance is low to disturb flow resistance regulating valve Download PDFInfo
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- CN107654664A CN107654664A CN201710841361.2A CN201710841361A CN107654664A CN 107654664 A CN107654664 A CN 107654664A CN 201710841361 A CN201710841361 A CN 201710841361A CN 107654664 A CN107654664 A CN 107654664A
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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
- F16K1/16—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 with pivoted closure-members
- F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
- F16K1/20—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
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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
- F16K1/16—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 with pivoted closure-members
- F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
- F16K1/20—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
- F16K1/2014—Shaping of the valve member
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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
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0227—Check valves or pivoted valves with the valve members swinging around an axis located at the edge of or outside the valve member
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
Description
（一）技术领域(1) Technical field
本发明涉及建材、化工及电力等技术领域，特别涉及一种低阻力低扰动流量阻力调节阀。The invention relates to technical fields such as building materials, chemical industry and electric power, and in particular to a low-resistance and low-disturbance flow resistance regulating valve.
（二）背景技术(2) Background technology
现在流体传送过程中需要对管路内部的流体进行流量的调节，通常采用的调节方法是在管路中加设蝶形调节挡板，使用该方法的装置通常为一种蝶形阀调节结构，如图1，当调节挡板（通常叫阀芯）全部打开时，轴及阀芯占用管道内部中间位置的空间，按照流体流动特性，流体在管道内呈现层流状态，中心部位流体流动速度快、流量大，紧靠外壁的位置流动速度慢、流量小，位于管道中间的阀芯缩小管道有效流通面积，并且对流体产生阻力作用大，对内部层流状态的流体产生的扰动作用也大。因此，非常有必要提供一种新的调节方法及使用该方法的调节结构，当调节挡板处于全开状态时，挡板转轴及挡板对内部流体产生的阻力小，并且对层流式流动状态改变小。Now in the process of fluid transmission, it is necessary to adjust the flow rate of the fluid inside the pipeline. The usual adjustment method is to add a butterfly adjustment baffle in the pipeline. The device using this method is usually a butterfly valve adjustment structure. As shown in Figure 1, when the adjustment baffle (usually called the valve core) is fully opened, the shaft and the valve core occupy the space in the middle of the pipeline. According to the fluid flow characteristics, the fluid in the pipeline presents a laminar flow state, and the fluid flow in the center is fast. , The flow rate is large, and the position close to the outer wall has a slow flow rate and a small flow rate. The valve core located in the middle of the pipeline reduces the effective flow area of the pipeline, and has a large resistance to the fluid, and a large disturbance to the fluid in the internal laminar flow state. Therefore, it is very necessary to provide a new adjustment method and an adjustment structure using this method. When the adjustment baffle is fully open, the resistance of the baffle shaft and the baffle to the internal fluid is small, and the laminar flow The state changes are small.
大容量燃煤火力发电机组普遍采用直吹式制粉系统，直吹式制粉系统采用辊式中速磨煤机或者双进双出钢球磨煤机，每台磨煤机配有煤粉分离器，分离器出口接有4-8个煤粉管接入燃烧器，通过燃烧器将磨煤机磨制的煤粉送人炉膛燃烧，煤粉被送入燃烧器时的状态对炉内燃烧至关重要，直接影响锅炉运行的安全性、经济性和环保性。Large-capacity coal-fired thermal power generation units generally adopt a direct-blowing pulverization system. The direct-blowing pulverization system uses a roller-type medium-speed coal mill or a double-inlet and double-outlet steel ball coal mill. Each coal mill is equipped with a pulverized coal separator. There are 4-8 pulverized coal pipes connected to the burner at the outlet of the separator, and the pulverized coal pulverized by the coal mill is sent to the furnace for combustion through the burner. It is very important and directly affects the safety, economy and environmental protection of boiler operation.
磨煤机出口处的煤粉分离器是一个联通的空腔，锅炉炉膛内部也是一个联通的空腔，分离器空腔内的煤粉在风力的裹挟下，通过数根煤粉管道输送至炉膛空腔进行燃烧，如果这些煤粉管道的直径、长度和弯头数量相同，则进入炉膛的风量和煤粉量相同，在现场实际中，由于各个粉管对于的燃烧器位置不同，导致各个粉管的长度、弯头和布置位置不同，使得各个管路阻力不同，流量和速度也不同，进入炉膛的风量和粉量不同，同时，由于气固两项流的特点决定，进入分离器的总风量不同时，各个粉管的偏差幅度亦随之变化。The pulverized coal separator at the exit of the coal mill is a connected cavity, and the inside of the boiler furnace is also a connected cavity. The pulverized coal in the separator cavity is transported to the furnace through several pulverized coal pipelines under the wind force. If the diameter, length and number of elbows of these pulverized coal pipes are the same, the air volume entering the furnace and the pulverized coal volume will be the same. The length, elbow and arrangement position of the pipes are different, so that the resistance of each pipe is different, the flow rate and speed are also different, and the air volume and powder volume entering the furnace are different. At the same time, due to the characteristics of the gas-solid flow When the air volume is different, the deviation range of each powder pipe also changes accordingly.
为解决上述问题，行业内普遍采用在煤粉管道内加入可调缩孔（见图2），通过调节两个月形调节阀芯的距离来控制孔径的大小改变管道阻力，实现各个煤粉管道的风粉阻力和流量的平衡。节流孔径的大小一般根据纯气流状态时的现场试验确定。安装可调缩孔后，管道阻力得到良好平衡，但是，是实际运行中，仍然存在以下问题：该可调缩孔结构上的缺陷，导致传动机构及内部空间易积存煤粉造成卡涩，无法实现在磨煤机运行期间调节开度，使得磨煤机运行期间各个煤粉管之间的煤粉浓度、速度和风量的不均匀仍然普遍存在，而且相当严重；再者，由于可调缩孔的结构问题导致缩孔附近存在死角，容易积粉，成为爆燃隐患；再者，即使当阀芯处于全开位置时，阀芯及转轴位于管道中间，缩小通流面积，对内部流体形成阻力，并对管道内部流体的流动状态形成干扰。In order to solve the above problems, it is generally used in the industry to add adjustable shrinkage holes in the pulverized coal pipelines (see Figure 2). By adjusting the distance between the two moon-shaped regulating valve cores to control the size of the aperture and change the resistance of the pipelines, the realization of each pulverized coal pipeline The balance of air powder resistance and flow. The size of the orifice is generally determined according to the field test in the state of pure air flow. After the adjustable shrinkage cavity is installed, the resistance of the pipeline is well balanced. However, in actual operation, there are still the following problems: the structural defect of the adjustable shrinkage cavity causes the transmission mechanism and the internal space to easily accumulate coal powder and cause jamming. Realize the adjustment of the opening during the operation of the coal mill, so that the unevenness of the pulverized coal concentration, speed and air volume among the various pulverized coal pipes during the operation of the coal pulverizer is still common and quite serious; Structural problems lead to dead corners near the shrinkage cavity, which is easy to accumulate powder and become a deflagration hazard; moreover, even when the valve core is in the fully open position, the valve core and the rotating shaft are located in the middle of the pipeline, reducing the flow area and forming resistance to the internal fluid. And interfere with the flow state of the fluid inside the pipeline.
因此，非常有必要提供一种可在线调整煤粉浓度速度的调节阀，在磨煤机运行期间可以通过调节所述调节阀开度来调整煤粉浓度和速度，并且不存在积粉和卡涩，解决磨煤机运行期间各个煤粉管之间的煤粉浓度、速度均衡性调节的问题。Therefore, it is very necessary to provide a regulating valve that can adjust the concentration and speed of pulverized coal online. During the operation of the coal mill, the concentration and speed of pulverized coal can be adjusted by adjusting the opening of the regulating valve, and there is no powder accumulation and jamming , to solve the problem of uniform adjustment of pulverized coal concentration and speed between pulverized coal pipes during the operation of the pulverizer.
（三）发明内容(3) Contents of the invention
本发明为了弥补现有技术的不足，提供了一种低阻力低扰动流量阻力调节阀。In order to make up for the deficiencies of the prior art, the invention provides a low-resistance and low-disturbance flow resistance regulating valve.
本发明是通过如下技术方案实现的：The present invention is achieved through the following technical solutions:
本发明的低阻力低扰动流量阻力调节阀，包括壳体、调节挡板和调节转轴，调节转轴安装在外壳内壁的一侧，调节挡板一端固定在调节转轴上，调节转轴带动调节挡板旋转以调节管道内部流体的流通截面；其特征在于：调节挡板采用平板状结构或者立体结构；当调节挡板全开时，调节挡板能够贴合或隐藏在壳体侧壁。The low-resistance and low-disturbance flow resistance regulating valve of the present invention includes a housing, an adjusting baffle and an adjusting rotating shaft, the adjusting rotating shaft is installed on one side of the inner wall of the casing, one end of the adjusting baffle is fixed on the adjusting rotating shaft, and the adjusting rotating shaft drives the adjusting baffle to rotate To adjust the flow section of the fluid inside the pipeline; it is characterized in that: the adjustment baffle adopts a flat structure or a three-dimensional structure; when the adjustment baffle is fully opened, the adjustment baffle can fit or hide on the side wall of the housing.
调节挡板采用平板状结构时，调节转轴安装在壳体下侧，壳体中部的下侧有一平面，当调节挡板处于全开状态时，调节挡板全部贴合或隐藏在壳体下侧平面内壁；壳体上经过该平面的横截面，任一高度之处的宽度小于或等于低于该高度之处的宽度，以便于调节挡板贴合到平面处。任一高度之处的宽度在平面上的投影位置不超出于平面的横截面的两端之外。When the adjustment baffle adopts a flat structure, the adjustment shaft is installed on the lower side of the housing, and there is a plane on the lower side of the middle part of the housing. When the adjustment baffle is fully open, the adjustment baffle is fully fitted or hidden on the lower side of the housing. Plane inner wall; the cross-section of the shell passing through the plane, the width of any height is less than or equal to the width of the position lower than the height, so as to facilitate the adjustment of the baffle to fit the plane. The projected position of the width at any height on the plane does not exceed the two ends of the cross-section of the plane.
调节挡板采用平板状结构时，能够采用不镂空板结构、梳齿形结构或多孔结构；梳形结构能够采用直齿或弯曲齿形状；弯曲齿形状能够采用渐开线形状或者圆弧形状；调节挡板采用多孔结构时，孔为圆形、多边形或长条形。When the adjustment baffle adopts a flat structure, it can adopt a non-hollow plate structure, a comb-shaped structure or a porous structure; the comb-shaped structure can adopt a straight tooth or curved tooth shape; the curved tooth shape can adopt an involute shape or an arc shape; When the regulating baffle adopts a porous structure, the holes are circular, polygonal or strip-shaped.
调节挡板采用平板状结构时，壳体中部的流通通道的横截面采用半圆形、半个椭圆形、三角形、矩形、梯形或半个正多边形，此时壳体上各高度之处的宽度小于或等于平面处的宽度；所述半个正多边形是指边数为5或者大于6的正多边形；挡板形状与壳体中部的流通通道的横截面形状一致。When the adjustment baffle adopts a flat structure, the cross-section of the circulation channel in the middle of the shell adopts a semicircle, half ellipse, triangle, rectangle, trapezoid or half regular polygon. At this time, the width of each height on the shell Less than or equal to the width at the plane; the half regular polygon refers to a regular polygon with sides 5 or greater than 6; the shape of the baffle is consistent with the cross-sectional shape of the flow channel in the middle of the housing.
壳体两端为矩形，用于连接矩形管道；或者壳体两端为圆形，用于连接圆形管道；或者壳体两端形状不同；转轴伸出壳体外部的部分连接执行机构，由执行机构拖动转轴旋转，执行机构采用电机、气缸或液压缸。The two ends of the housing are rectangular, which are used to connect rectangular pipes; or the two ends of the housing are round, which are used to connect circular pipes; or the two ends of the housing are of different shapes; The actuator drives the rotating shaft to rotate, and the actuator adopts a motor, an air cylinder or a hydraulic cylinder.
当壳体内的流体流通通道为圆筒或正多棱柱、调节挡板采用立体结构时，调节挡板采用与壳体一致的圆弧形或半个正多棱柱形，而且调节挡板的正投影面为与壳体一致的圆形或正多边形。When the fluid circulation channel in the housing is a cylinder or a regular polygonal prism, and the adjusting baffle adopts a three-dimensional structure, the adjusting baffle adopts an arc shape or half a regular polygonal prism consistent with the housing, and the orthographic projection of the adjusting baffle The surface is a circle or a regular polygon consistent with the shell.
本发明的低阻力低扰动流量阻力调节阀，包括壳体、调节挡板和调节转轴，调节挡板一端固定在调节转轴上，调节转轴带动调节挡板旋转以调节管道内部流体的流通截面；其特征在于：调节挡板和调节转轴采用2组，分别安装在外壳内壁的上侧和下侧，其打开方向相同或相反；调节挡板采用平板状结构或者立体结构；当调节挡板全开时，调节挡板能够贴合或隐藏在壳体侧壁。The low-resistance and low-disturbance flow resistance regulating valve of the present invention includes a housing, an adjusting baffle and an adjusting rotating shaft. One end of the adjusting baffle is fixed on the adjusting rotating shaft, and the adjusting rotating shaft drives the adjusting baffle to rotate to adjust the flow section of the fluid inside the pipeline; It is characterized in that: the adjustment baffle and the adjustment shaft adopt two sets, which are respectively installed on the upper side and the lower side of the inner wall of the housing, and the opening directions are the same or opposite; the adjustment baffle adopts a flat structure or a three-dimensional structure; when the adjustment baffle is fully opened , the adjustment baffle can fit or hide on the side wall of the housing.
当壳体内的流体通道为矩形筒、调节挡板采用平板状结构时；此时，两组调节挡板打开的方向相同或相反。When the fluid channel in the casing is a rectangular cylinder and the adjustment baffle adopts a flat plate structure; at this time, the opening directions of the two sets of adjustment baffles are the same or opposite.
当壳体内的流体流通通道为圆筒、椭圆筒或正多棱柱筒，调节挡板采用立体结构时，调节挡板采用与壳体一致的圆弧形、椭圆弧形或半个正多棱柱形，而且调节挡板的正投影面为与壳体一致的圆形、椭圆形或正多边形；此时，两组调节挡板打开的方向相同。When the fluid circulation channel in the housing is a cylinder, ellipse or regular polygonal cylinder, and the adjusting baffle adopts a three-dimensional structure, the adjusting baffle adopts a circular arc shape, an elliptical arc shape or a half regular polygonal prism consistent with the housing. , and the orthographic projection surface of the adjustment baffle is a circle, ellipse or regular polygon consistent with the housing; at this time, the opening directions of the two sets of adjustment baffles are the same.
本发明的调节阀应用于流体管道，当调节结构处于全开状态时，调节挡板全部位于结构侧壁, 调节挡板不对管道中心部位的最高速流体产生阻碍和干扰，对管道内的流体的流动阻力和层流状态影响最低。The regulating valve of the present invention is applied to fluid pipelines. When the regulating structure is fully open, the regulating baffles are all located on the side walls of the structure, and the regulating baffles do not hinder or interfere with the highest-speed fluid at the center of the pipeline, and the flow of the fluid in the pipeline will not be hindered or disturbed. Flow resistance and laminar flow conditions have the least influence.
本发明的有益效果是：结构简单，操作方便，当阀门处于全开状态时，调节挡板位于壳体一侧,阀芯（即调节挡板）全部隐藏在阀体侧壁，阀芯不占用阀体内部流体通道，不对内部流体产生额外阻力，调节挡板对内部流体的阻力最低、流动状态扰动最小，有效增加流体的速度和流量。The beneficial effects of the present invention are: simple structure, convenient operation, when the valve is fully open, the regulating baffle is located on one side of the casing, the valve core (that is, the regulating baffle) is completely hidden in the side wall of the valve body, and the valve core does not occupy The internal fluid channel of the valve body does not produce additional resistance to the internal fluid, and the adjustment baffle has the lowest resistance to the internal fluid, and the disturbance of the flow state is minimal, effectively increasing the speed and flow of the fluid.
（四）附图说明(4) Description of drawings
附图为本发明所涉及结构的示意图。Accompanying drawing is the schematic diagram of the structure involved in the present invention.
图1为现有单阀芯流量阀结构图，图2为现有双阀芯流量阀结构图。Fig. 1 is a structural diagram of an existing single-spool flow valve, and Fig. 2 is a structural diagram of an existing double-spool flow valve.
图3为本发明的流量阀示意图，此时壳体下面为平面，调节挡板也是平板状结构，图4为图3的左视图。Fig. 3 is a schematic diagram of the flow valve of the present invention. At this time, the bottom of the housing is a plane, and the regulating baffle is also a flat structure. Fig. 4 is a left view of Fig. 3 .
图5为本发明的流量阀示意图，此时壳体的流体通道为圆筒，调节挡板为立体圆弧形结构，图6、图7、图8依次为图5中调节挡板的主视图、左视图和俯视图。Fig. 5 is a schematic diagram of the flow valve of the present invention. At this time, the fluid channel of the housing is a cylinder, and the regulating baffle is a three-dimensional arc-shaped structure. Fig. 6, Fig. 7 and Fig. 8 are the front views of the regulating baffle in Fig. 5 in turn , left and top views.
图9为本发明的流量阀各种流体通道横截面示意图，此时壳体下面为平面，调节挡板也是平板状结构，调节挡板的形状与流体通道横截面形状一致。Fig. 9 is a schematic cross-sectional view of various fluid passages of the flow valve of the present invention. At this time, the bottom of the housing is flat, and the adjustment baffle is also a flat plate structure, and the shape of the adjustment baffle is consistent with the cross-sectional shape of the fluid passage.
图10为本发明的流量阀示意图，此时调节挡板有上下两组，图11、图12、图13为调节挡板的主视图、左视图、俯视图。Fig. 10 is a schematic diagram of the flow valve of the present invention. At this time, there are two groups of upper and lower regulating baffles. Fig. 11, Fig. 12 and Fig. 13 are front, left and top views of the regulating baffles.
图14为本发明的流量阀各种流体通道横截面示意图，此时调节挡板有上下两组，调节挡板为立体结构，采用与壳体一致的圆弧形、椭圆弧形或半个正多棱柱形。Fig. 14 is a schematic cross-sectional view of various fluid passages of the flow valve of the present invention. At this time, the adjustment baffle has two groups of upper and lower groups. Polygonal.
图15为调节挡板采用平板状结构时，梳齿形调节挡板结构图，梳形采用直齿或弯曲齿形状，调节挡板和壳体的横截面的形状为接近半圆形或半椭圆形。Figure 15 is a structural diagram of the comb-shaped adjusting baffle when the adjusting baffle adopts a flat structure. shape.
图16为调节挡板采用平板状结构时，梳齿形调节挡板结构图，梳形采用直齿或弯曲齿形状，调节挡板和壳体的横截面的形状为矩形。Figure 16 is a structural diagram of a comb-shaped adjusting baffle when the adjusting baffle adopts a flat structure.
图17为调节挡板采用平板状结构时，多孔结构调节挡板图，调节挡板和壳体的横截面的形状为矩形。Fig. 17 is a diagram of the regulating baffle with a porous structure when the regulating baffle adopts a flat structure, and the shape of the cross section of the regulating baffle and the housing is rectangular.
图中，1壳体，2调节挡板，3调节转轴，4流体通道，5平面。In the figure, 1 housing, 2 adjusting baffle, 3 adjusting shaft, 4 fluid channel, 5 plane.
（五）具体实施方式(5) Specific implementation methods
实施例1Example 1
本发明的低阻力低扰动流量阻力调节阀，包括壳体1、调节挡板2和调节转轴3，调节转轴安装在外壳内壁的一侧，调节挡板一端固定在调节转轴上，调节转轴带动调节挡板旋转以调节管道内部流体通道4的横截面；调节挡板采用平板状结构或者立体结构；当调节挡板全开时，调节挡板能够贴合或隐藏在壳体侧壁。The low-resistance and low-disturbance flow resistance regulating valve of the present invention includes a housing 1, an adjusting baffle 2 and an adjusting shaft 3, the adjusting shaft is installed on one side of the inner wall of the casing, one end of the adjusting baffle is fixed on the adjusting shaft, and the adjusting shaft drives the adjustment The baffle rotates to adjust the cross-section of the fluid channel 4 inside the pipeline; the adjustment baffle adopts a flat structure or a three-dimensional structure; when the adjustment baffle is fully opened, the adjustment baffle can fit or hide on the side wall of the housing.
该实施例包括装置外壳1，所述装置外壳1侧面安装有调节转轴3，所述调节挡板2安装在旋转轴3上，由旋转轴3带动调节挡板1旋转；当旋转轴3带动调节挡板2旋转至与轴向垂直位置时，调节装置处于全关状态，当当旋转轴3带动调节挡板2旋转至与轴向平行位置时，调节装置处于全开状态，当调节挡板2处于全开状态时，调节挡板2几乎与管壁贴紧，调节挡板2处于层流的流速最小区域或者接近0流速区，调节挡板2对管道内部的流体的阻力和干扰作用最小。This embodiment includes a device housing 1, the side of the device housing 1 is equipped with an adjustment shaft 3, the adjustment baffle 2 is installed on the rotation shaft 3, and the rotation shaft 3 drives the adjustment baffle 1 to rotate; when the rotation shaft 3 drives the adjustment When the baffle 2 is rotated to a position perpendicular to the axial direction, the adjustment device is in a fully closed state; when the rotating shaft 3 drives the adjustment baffle 2 to rotate to a position parallel to the axial direction, the adjustment device is in a fully open state; when the adjustment baffle 2 is in the In the fully open state, the regulating baffle 2 is almost close to the pipe wall, and the regulating baffle 2 is in the laminar flow minimum area or close to 0 flow velocity area, and the regulating baffle 2 has the least resistance and interference effect on the fluid inside the pipeline.
调节挡板采用平板状结构时，调节转轴安装在壳体下侧，壳体中部的下侧有一平面5，当调节挡板处于全开状态时，调节挡板全部贴合或隐藏在壳体下侧平面内壁；壳体上经过该平面的横截面，任一高度之处的宽度小于或等于低于该高度之处的宽度，以便于调节挡板贴合到平面处。任一高度之处的宽度在平面上的投影位置不超出于平面的横截面的两端之外。When the adjustment baffle adopts a flat structure, the adjustment shaft is installed on the lower side of the housing, and there is a plane 5 on the lower side of the middle of the housing. When the adjustment baffle is fully open, the adjustment baffle is fully fitted or hidden under the housing. The inner wall of the side plane; the cross-section of the shell passing through the plane, the width of any height is less than or equal to the width of the position lower than the height, so as to facilitate the adjustment of the baffle to fit the plane. The projected position of the width at any height on the plane does not exceed the two ends of the cross-section of the plane.
调节挡板采用平板状结构时，能够采用不镂空板结构、梳齿形结构或多孔结构；梳形结构能够采用直齿或弯曲齿形状；弯曲齿形状能够采用渐开线形状或者圆弧形状；调节挡板采用多孔结构时，孔为圆 形、多边形或长条形。When the adjustment baffle adopts a flat structure, it can adopt a non-hollow plate structure, a comb-shaped structure or a porous structure; the comb-shaped structure can adopt a straight tooth or curved tooth shape; the curved tooth shape can adopt an involute shape or an arc shape; When the regulating baffle adopts a porous structure, the holes are circular, polygonal or strip-shaped.
调节挡板采用平板状结构时，壳体中部的流通通道的横截面采用半圆形、半个椭圆形、三角形、矩形、梯形或半个正多边形，此时壳体上各高度之处的宽度小于或等于平面处的宽度；所述半个正多边形是指边数为5或者大于6的正多边形；挡板形状与壳体中部的流通通道的横截面形状一致。When the adjustment baffle adopts a flat structure, the cross-section of the circulation channel in the middle of the shell adopts a semicircle, half ellipse, triangle, rectangle, trapezoid or half regular polygon. At this time, the width of each height on the shell Less than or equal to the width at the plane; the half regular polygon refers to a regular polygon with sides 5 or greater than 6; the shape of the baffle is consistent with the cross-sectional shape of the flow channel in the middle of the housing.
壳体两端为矩形，用于连接矩形管道；或者壳体两端为圆形，用于连接圆形管道；或者壳体两端形状不同；转轴伸出壳体外部的部分连接执行机构，由执行机构拖动转轴旋转，执行机构采用电机、气缸或液压缸。The two ends of the housing are rectangular, which are used to connect rectangular pipes; or the two ends of the housing are round, which are used to connect circular pipes; or the two ends of the housing are of different shapes; The actuator drives the rotating shaft to rotate, and the actuator adopts a motor, an air cylinder or a hydraulic cylinder.
当壳体内的流体流通通道为圆筒或正多棱柱、调节挡板采用立体结构时，调节挡板采用与壳体一致的圆弧形或半个正多棱柱形，而且调节挡板的正投影面为与壳体一致的圆形或正多边形。When the fluid circulation channel in the housing is a cylinder or a regular polygonal prism, and the adjusting baffle adopts a three-dimensional structure, the adjusting baffle adopts an arc shape or half a regular polygonal prism consistent with the housing, and the orthographic projection of the adjusting baffle The surface is a circle or a regular polygon consistent with the shell.
本发明的低阻力低扰动流量阻力调节方法，将调节挡板安装在调节装置的侧壁，对内部流体流量和阻力进行调节，根据流体的流动特性，流体在管道内部流动时，中心部位流速快，流量大，四周部位流动慢，流量小，呈现一种层流状态，这种层流状态对保护管路免受磨损有好处。调节挡板的转轴安装于装置外壳侧壁，调节挡板开合时，该调节挡板以该转轴作为旋转中心旋转，所述调节挡板处于完全开启状态时，调节挡板完全处于外壳侧壁位置。In the low-resistance and low-disturbance flow resistance adjustment method of the present invention, the adjustment baffle is installed on the side wall of the adjustment device to adjust the internal fluid flow and resistance. According to the flow characteristics of the fluid, when the fluid flows inside the pipeline, the flow speed at the center is fast. , the flow rate is large, the surrounding parts flow slowly, and the flow rate is small, showing a laminar flow state, which is good for protecting the pipeline from wear and tear. The rotating shaft of the adjusting baffle is installed on the side wall of the device housing. When the adjusting baffle is opened and closed, the adjusting baffle rotates with the rotating shaft as the center of rotation. When the adjusting baffle is fully opened, the adjusting baffle is completely on the side wall of the housing. Location.
本应用本发明原理设计的调节机构工作时，调节挡板2在旋转轴3的带动下从全开位置旋转，装置外壳1内部流通截面开始变小，当旋转至全关位置时，装置外壳1内部流通截面最小，对管道内部的流体截断能力最大。When the regulating mechanism designed by applying the principles of the present invention works, the regulating baffle 2 rotates from the fully open position driven by the rotating shaft 3, and the internal circulation section of the device housing 1 begins to decrease. When it rotates to the fully closed position, the device housing 1 The internal flow cross-section is the smallest, and the ability to cut off the fluid inside the pipeline is the largest.
转轴安装在靠近阀体侧壁上，而不是行内通常采用的安装在直径位置上，当阀门处于全开状态时，阀芯全部隐藏在阀体侧壁，阀芯不占用阀体内部空间，不对内部流体产生额外阻力。The rotating shaft is installed close to the side wall of the valve body, instead of being installed on the diameter position usually used in the industry. When the valve is fully open, the valve core is completely hidden on the side wall of the valve body, and the valve core does not occupy the internal space of the valve body. Internal fluid creates additional resistance.
调节挡板半开时，其倾斜方向可以与流体流向一致。When the regulating baffle is half-opened, its inclination direction can be consistent with the fluid flow direction.
阀体（即调节挡板）可以采用方形阀体，匹配方形管道。The valve body (that is, the regulating baffle) can adopt a square valve body to match a square pipe.
阀体（即调节挡板）可以圆形阀体，匹配圆形管道。阀芯（即调节挡板）也可以采用方形圆形结合的阀体结构，匹配圆形管道。The valve body (that is, the regulating baffle) can be a round valve body to match a round pipe. The spool (that is, the regulating baffle) can also adopt a square-circle combined valve body structure to match circular pipes.
梳形调节挡板可以采用直齿，也可以采用弯曲齿形状，齿形状可采用渐开线形状或者圆弧形状。The comb-shaped adjusting baffle can adopt straight teeth or curved teeth, and the teeth can adopt an involute shape or an arc shape.
阀体全关时，可以设计成100%关断，也可以采用低于100%的部分关断设计。When the valve body is fully closed, it can be designed to be 100% shut-off, or a partial shut-off design lower than 100% can be used.
实施例2Example 2
本发明的低阻力低扰动流量阻力调节阀，包括壳体1、调节挡板2和调节转轴3，调节挡板一端固定在调节转轴上，调节转轴带动调节挡板旋转以调节管道内部流体通道4的横截面；调节挡板和调节转轴采用2组，分别安装在外壳内壁的上侧和下侧，其打开方向相同或相反；调节挡板采用平板状结构或者立体结构；当调节挡板全开时，调节挡板能够贴合或隐藏在壳体侧壁。The low-resistance and low-disturbance flow resistance regulating valve of the present invention includes a housing 1, an adjusting baffle 2 and an adjusting rotating shaft 3, one end of the adjusting baffle is fixed on the adjusting rotating shaft, and the adjusting rotating shaft drives the adjusting baffle to rotate to adjust the fluid channel 4 inside the pipeline The cross section of the baffle plate and the adjusting shaft adopt two groups, which are respectively installed on the upper side and the lower side of the inner wall of the housing, and the opening directions are the same or opposite; the baffle plate adopts a flat structure or a three-dimensional structure; when the baffle plate is fully opened When , the adjustment baffle can fit or hide on the side wall of the housing.
当壳体内的流体通道为矩形筒、调节挡板采用平板状结构时；此时，两组调节挡板打开的方向相同或相反。When the fluid channel in the casing is a rectangular cylinder and the adjustment baffle adopts a flat plate structure; at this time, the opening directions of the two sets of adjustment baffles are the same or opposite.
当壳体内的流体流通通道为圆筒、椭圆筒或正多棱柱筒，调节挡板采用立体结构时，调节挡板采用与壳体一致的圆弧形、椭圆弧形或半个正多棱柱形，而且调节挡板的正投影面为与壳体一致的圆形、椭圆形或正多边形；此时，两组调节挡板打开的方向相同。When the fluid circulation channel in the housing is a cylinder, ellipse or regular polygonal cylinder, and the adjusting baffle adopts a three-dimensional structure, the adjusting baffle adopts a circular arc shape, an elliptical arc shape or a half regular polygonal prism consistent with the housing. , and the orthographic projection surface of the adjustment baffle is a circle, ellipse or regular polygon consistent with the housing; at this time, the opening directions of the two sets of adjustment baffles are the same.
Claims (9)
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| CN201710841361.2A CN107654664A (en) | 2017-09-18 | 2017-09-18 | A kind of lower resistance is low to disturb flow resistance regulating valve |
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| CN112344362A (en) * | 2020-11-26 | 2021-02-09 | 西安热工研究院有限公司 | An anti-blocking type pulverized coal pipe wind speed adjustment device |
| CN114533981A (en) * | 2022-02-25 | 2022-05-27 | 苏州威新锋医疗科技有限公司 | Thoracic drainage device |
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Application publication date: 20180202 |