CN111288214A - 用于流体流动控制设备中的噪声衰减罩的保持机构 - Google Patents

用于流体流动控制设备中的噪声衰减罩的保持机构 Download PDF

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CN111288214A
CN111288214A CN201911243769.5A CN201911243769A CN111288214A CN 111288214 A CN111288214 A CN 111288214A CN 201911243769 A CN201911243769 A CN 201911243769A CN 111288214 A CN111288214 A CN 111288214A
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attenuator
valve body
fluid flow
retaining member
control device
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CN111288214B (zh
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E·M·沃尔肯斯
Z·M·朔伊费伦
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Fisher Controls International LLC
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00Means in valves for absorbing fluid energy
    • F16K47/02Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0605Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00Means in valves for absorbing fluid energy
    • F16K47/08Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00Means in valves for absorbing fluid energy
    • F16K47/08Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
    • F16K47/14Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths the throttling member being a perforated membrane
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0626Easy mounting or dismounting means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0663Packings
    • F16K5/0689Packings between housing and plug
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08Details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08Details
    • F16K5/14Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/20Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
    • F16K5/201Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/06Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00Means in valves for absorbing fluid energy
    • F16K47/04Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
    • F16K47/045Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member and the closure member being rotatable

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)
  • Details Of Valves (AREA)

Abstract

一种流体流动控制设备,包括:阀体,其限定入口、出口、以及在入口与出口之间延伸的流体流动路径;可旋转的阀构件,其至少部分地设置在阀体内;衰减器,其可操作地耦接到阀体;以及保持构件,其设置在阀体内。可旋转的阀构件可在流体流动路径内从关闭位置旋转到打开位置,以控制通过流体流动路径的流体流动。衰减器限定衰减器本体,该衰减器本体包括多个降噪孔。保持构件抵靠衰减器本体的一部分定位,以将衰减器保持在阀体内。

Description

用于流体流动控制设备中的噪声衰减罩的保持机构
技术领域
本公开内容总体上涉及流体流动控制设备,更具体而言,涉及将噪声衰减罩保持在旋转球阀中的保持机构。
背景技术
阀普遍用于过程控制系统中以控制过程流体的流动。旋转球阀通常具有可旋转地设置在流体路径中的可旋转的关闭构件(例如,球)。轴可操作地将关闭构件耦接至致动设备,以使关闭构件在打开位置与关闭位置之间旋转,从而选择性地允许或限制在阀的入口与出口之间的流体流动。该阀可以使用具有变化配置的任何数量的噪声衰减罩(noiseattenuation dome),以帮助降低系统内的空气动力和流体动力噪声。
这些噪声衰减罩必须被适当地固定在阀内以确保其正常操作。在一些系统中,诸如罩间隔件、O形环、紧固件和其它部件之类的部件可以用于将衰减罩固定在阀内并向其提供适当的密封。这些部件可能非常复杂,并且可能需要昂贵的制造过程。此外,由于可能的阀应用的数量众多,这些系统通常需要针对每种阀应用的定制部件。例如,某些旋转球阀设计可针对每种阀尺寸和/或压力等级使用多种阀尾件(tailpiece)设计,这些设计取决于是否满足以下条件而不同:a)在特定应用中仅需要密封;b)在特定应用中仅需要衰减;和/或c)在特定应用中既需要密封又需要衰减。另外,对于每种阀尺寸和配置,可能需要不同的衰减罩。因此,当前的系统具有大量可能的组合,并且可能需要制造商生产和存储大量不同的部件。
发明内容
根据一个示例性方面,一种流体流动控制设备包括:阀体,所述阀体限定入口、出口、以及在所述入口与所述出口之间延伸的流体流动路径;可旋转的阀构件,所述可旋转的阀构件至少部分地设置在所述阀体中;衰减器,所述衰减器可操作地耦接到所述阀体:以及保持构件,所述保持构件设置在所述阀体内。所述可旋转的阀构件可在所述流体流动路径内从关闭位置旋转到打开位置,以控制通过所述流体流动路径的流体流动。所述衰减器限定衰减器本体,所述衰减器本体包括多个降噪孔。所述保持构件抵靠所述衰减器本体的一部分定位,以将所述衰减器保持在所述阀体内。在一些形式中,所述保持构件由金属材料构成。
在一些形式中,所述衰减器本体限定保持凸缘。所述保持构件被配置为抵接所述保持凸缘以将所述衰减器保持在所述阀体内。所述阀体还可以限定保持构件凹槽以容纳所述保持构件的一部分。在一些示例中,所述保持构件可以通过在变形的保持构件中存储的能量而摩擦配合在所述保持构件凹槽内。在一些形式中,所述保持凸缘包括孔以容纳将所述衰减器固定至所述阀体的销。所述可旋转的阀构件可以相对于所述衰减器旋转。
在一些示例中,所述流体流动控制设备还可以包括浮动球密封承载件,所述浮动球密封承载件至少部分地设置在所述阀体内。所述球密封承载件对所述可旋转的阀构件施加密封力。密封元件可以设置于被形成在所述球密封承载件的一部分上的凹槽内,以使得所述球密封承载件密封地接合所述阀体。
根据另一个示例性方面,一种组装流体流动控制设备的方法,所述流体流动控制设备具有阀体,所述阀体限定入口、出口、以及从所述入口延伸到所述出口的流体流动路径,所述方法包括:将衰减器设置在所述阀体内;将保持构件的一部分抵靠所述衰减器的一部分定位;以及将所述可旋转的阀构件设置在所述阀体内。所述衰减器限定衰减器本体,所述衰减器本体包括多个降噪孔。所述保持构件定位在所述阀体内并抵靠所述衰减器,以将所述衰减器保持在所述阀体内。
附图说明
通过提供以下详细描述中所描述的具有保持机构的流体流动控制设备,至少部分地满足了上述需求,尤其是当结合附图进行研究时,其中:
图1例示了根据各种实施例的具有用于噪声衰减罩的保持机构的示例性流体流动控制设备的剖视图;
图2例示了根据各种实施例的图1的示例性流体流动控制设备的第一放大剖视图;以及
图3例示了根据各种实施例的图1和图2的示例性流体流动控制设备的第二放大剖视图。
熟练技术人员将理解,附图中的元件是为了简单和清楚而示出的,并且不一定按比例绘制。例如,图中某些元件的尺寸和/或相对定位可能相对于其它元件被放大,以帮助增进对本发明的各种实施例的理解。此外,通常没有描绘在商业上可行的实施例中有用或必需的普通但易于理解的元件,以便促进对这些各种实施例的不太受阻碍的查看。还将意识到,可能以特定的发生顺序描述或描绘某些动作和/或步骤,但是本领域技术人员将理解,实际上并不要求关于顺序的这种特定性。还应理解,本文使用的术语和表达具有如上文所述的技术领域的技术人员对此类术语和表达相一致的普通技术含义,除了本文已另外阐述了不同的特定含义。
具体实施方式
一般而言,根据这些各种实施例,提供了一种具有用于噪声衰减罩的保持机构的流体流动控制设备。保持机构适于接合衰减罩,以将罩固定在阀构件内,并且在一些配置中,该保持机构由钢或其它金属材料的弯曲带构成。因此,保持机构和相关部件提供了易于制造并且可以在最小化的交货时间内制备的部件保持的低成本方案。
在图1-图3中示出了具有用于噪声衰减罩的保持机构的示例性流体流动控制设备。示例性阀是旋转球流体控制阀10,其包括阀尾件或阀体12、具有旋转球30形式的可旋转阀构件、衰减器40和保持构件60,该阀尾件或阀体12限定入口14、出口16以及从入口14延伸到出口16的流体流动路径18。阀体12还限定带台阶的空腔部分20,其形成凹槽22和销孔24。阀10可包括用于辅助其操作的任意数量的附加部件,例如密封组件、润滑剂、夹持机构和/或紧固机构等。
旋转球30至少部分地设置在阀体12内,并且经由可操作地耦接到其的轴31在流体流动路径18内可旋转。轴31另外耦接到致动器(未示出),该致动器提供致动力以选择性地使旋转球30旋转。
旋转球30相对于阀体12内的阀座可在流体关闭(例如,切断)位置与打开位置之间旋转,以控制通过流体流动路径18的流体流动。在所示的示例中,旋转球30是球面形球,其限定实心的球形表面32和孔34,以当实心表面32未抵靠阀座落座时,孔34允许流体从中通过。换句话说,在该配置中,端口34与流体流动路径18流体连通。当旋转球30的球形表面32抵靠阀座落座时,流体在入口端口14与出口端口16之间被切断。
如前所述,流体控制阀10包括至少一个噪声衰减罩或衰减器40,该噪声衰减罩或衰减器40被提供用于衰减阀环境中的空气动力和流体动力噪声。衰减器40限定衰减器本体42,该衰减器本体42是拱形的并且包括形成穿过本体42的流体通道的多个孔44。虽然所示的阀10描绘了单个衰减器40,但是应当理解,阀10可以包括位于旋转球30周边的多个(例如,两个)衰减器。
衰减器本体42还限定周边46,该周边46具有呈台阶式的外部轮廓,该轮廓与阀体12的带台阶的空腔部分20相对应。具体地,如图2和图3所示,周边46形成凸缘48,凸缘48具有第一表面48a、第二表面48b和第三表面48c。凸缘48还限定孔49,孔49在第一表面48a与第三表面48c之间延伸。
保持构件60具有薄金属环的形式,其限定保持构件本体62,保持构件本体62具有第一表面62a、第二表面62b、第一端62c和第二端62d。通常,当安装在阀10内时,保持构件60抵靠衰减器40,以将衰减器40锁定或保持在阀体12的指定空间内。更具体地,如图2和图3所示,保持构件本体62的第一端62c至少部分地设置在阀体12的凹槽22内,而保持构件本体62的第二端62d从阀体12向内延伸。在一些形式中,保持构件60可以摩擦配合在凹槽22内。在其它形式中,保持构件60可以通过任意多种方法(例如螺纹连接、粘合剂、通过使用紧固件等)固定在凹槽22内。保持构件本体62的第一表面62a接触凸缘48的第一表面48a,并且用作止挡件以保持衰减器40。值得注意的是,阀体12的带台阶的空腔部分20另外包括突沿(ledge)20a,凸缘48的第二表面48b抵靠突沿20a以进一步限制凸缘48(以及因此衰减器40)的移动。
在一些示例中,可能需要将衰减器40固定至阀体12,以使得它们之间的相对旋转受到限制并且沿轴31的轴线的相对平移被固定。因此,销26(图1)可插入通过由衰减器的凸缘48形成的孔49并进入阀体12的销孔24。结果,衰减器40相对于旋转球30保持在固定位置。可以使用任何数量的附加固定机构。
在某些阀应用中,可能需要密封能力。因此,提供了浮动球密封承载件70。浮动球密封承载件70限定密封承载件本体72,类似于衰减器主体42的周边46,该密封承载件本体72具有周边74,该周边74具有呈台阶的配置以对应于阀体12的带台阶的空腔部分20。另外,密封承载件本体72包括凹槽76和止挡区域78。凹槽76容纳密封构件(例如,O形环)80,以在密封承载件70与阀体12之间形成密封。
密封承载件70可在阀体12内移动(即,浮动)。在一些形式中,止挡区域78被配置成抵靠保持构件本体62的第二表面62b以限制密封承载件70沿第一方向的移动,以及被配置成抵靠旋转球30以限制密封承载件沿第二方向的移动。此外,在一些配置中,弹性构件(例如,弹簧,未示出)被配置成对密封承载件本体72施加力,该力经由密封承载件本体72将密封插件79推向旋转球30的一部分。在一个示例中,密封插件79和密封构件80产生流体压强作用于其上的压强不平衡区域,从而产生施加在密封插件79上和旋转球30上的所得的压强不平衡力。在任何情况下,在浮动球密封承载件70的整个行程极限中,密封件80与阀体12保持接触。
在一些形式中,通过将衰减器40设置在阀体12内来组装阀10。在一些示例中,销26可以首先插入销孔24和/或凸缘48的孔49中,以有助于使衰减器40相对于阀体12正确对准。保持构件60的一部分(即,第一端62a)抵靠衰减器凸缘48的一部分定位,以将衰减器40保持在阀体12内。然后,将旋转球30设置在阀体12内,并且可以将诸如轴31之类的任何其它部件耦接到其上。
如此配置,阀10使用较少的易于制造和组装的部件。保持构件60具有延长的使用寿命,并且仅在对阀10进行大型检查时才可能需要维修。此外,对于给定的尺寸和/或压强等级的所有可能的配置,所提供的阀10使用单一的尾件设计。此外,通过降低阀的复杂性,对于给定的尺寸和/或压强等级,需要较少的衰减器和密封承载件设计。特别地,由于其能够浮动在不同的尾件几何形状内的能力,仅需要单一尺寸设计的球密封承载件。保持构件60的使用还使得阀10中潜在的泄漏路径的数量减少。
本领域技术人员将认识到,在不脱离本发明的范围的情况下,可以对上述实施例进行多种修改、变更和组合,并且这些修改、变更和组合应被视为在本发明构思的范围之内。
本专利申请所附的专利权利要求不意图根据35U.S.C.§112(f)进行解释,除非明确记载了传统的“装置加功能”的语言,例如在权利要求中明确记载的“用于……的装置”或“用于……的步骤”的语言。本文描述的系统和方法旨在改善计算机功能,并改善常规计算机的运行。

Claims (16)

1.一种流体流动控制设备,包括:
阀体,所述阀体限定入口、出口、以及从所述入口延伸至所述出口的流体流动路径;
可旋转的阀构件,所述可旋转的阀构件至少部分地设置在所述阀体中,并且能够在所述流体流动路径内从关闭位置旋转到打开位置,以控制通过所述流体流动路径的流体流动;
衰减器,所述衰减器可操作地耦接到所述阀体,所述衰减器限定衰减器本体,所述衰减器本体包括多个降噪孔;以及
保持构件,所述保持构件设置在所述阀体内;
其中,所述保持构件抵靠所述衰减器本体的一部分定位,以将所述衰减器保持在所述阀体内。
2.根据权利要求1所述的流体流动控制设备,其中,所述衰减器本体限定保持凸缘,其中,所述保持构件被配置成抵接所述保持凸缘以将所述衰减器保持在所述阀体内。
3.根据权利要求2所述的流体流动控制设备,其中,所述阀体还限定保持构件凹槽以容纳所述保持构件的一部分。
4.根据权利要求3所述的流体流动控制设备,其中,所述保持构件摩擦配合在所述保持构件凹槽内。
5.根据权利要求2所述的流体流动控制设备,其中,所述保持凸缘包括孔以容纳将所述衰减器固定至所述阀体的销。
6.根据权利要求5所述的流体流动控制设备,其中,所述可旋转的阀构件相对于所述衰减器旋转。
7.根据权利要求1所述的流体流动控制设备,其中,所述保持构件由金属材料构成。
8.根据权利要求1所述的流体流动控制设备,还包括至少部分地设置在所述阀体内的浮动球密封承载件,所述球密封承载件适于对所述可旋转的阀构件施加密封力。
9.根据权利要求8所述的流体流动控制设备,还包括密封元件,所述密封元件设置于被形成在所述球密封承载件的一部分上的凹槽内,以使得所述球密封承载件密封地接合所述阀体。
10.一种组装流体流动控制设备的方法,所述流体流动控制设备具有阀体,所述阀体限定入口、出口、以及从所述入口延伸至所述出口的流体流动路径,所述方法包括:
将衰减器设置在所述阀体内,所述衰减器限定衰减器本体,所述衰减器本体包括多个降噪孔;
将保持构件的一部分抵靠所述衰减器的一部分定位,以将所述衰减器保持在所述阀体内;以及
将可旋转的阀构件设置在所述阀体内。
11.根据权利要求10所述的方法,其中,所述保持构件抵靠所述衰减器本体的保持凸缘定位,以使得所述保持构件抵接所述保持凸缘部分以将所述衰减器保持在所述阀体内。
12.根据权利要求11所述的方法,还包括:经由设置于被形成在所述保持构件的所述保持凸缘部分中的孔中的销来将所述衰减器固定至所述阀体。
13.根据权利要求11所述的方法,还包括:将所述保持构件至少部分地设置于被形成在所述阀体内的保持构件凹槽内。
14.根据权利要求13所述的方法,还包括:使所述保持构件摩擦配合在所述保持构件凹槽内。
15.根据权利要求9所述的方法,还包括:将浮动球密封承载件定位在所述阀体内,以使得所述球密封承载件对所述可旋转的阀构件施加密封力。
16.根据权利要求15所述的方法,还包括:将密封元件设置于被形成在所述球密封承载件的一部分上的凹槽内,以使得所述球密封承载件密封地接合所述阀体。
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