CN108036071B - 一种防积砂旋塞阀 - Google Patents
一种防积砂旋塞阀 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
- F16K5/00—Plug 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
- F16K5/04—Plug 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 cylindrical surfaces; Packings therefor
- F16K5/0407—Plug 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 cylindrical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
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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
- F16K5/00—Plug 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
- F16K5/04—Plug 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 cylindrical surfaces; Packings therefor
- F16K5/0457—Packings
- F16K5/0471—Packings between housing and plug
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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
- F16K5/00—Plug 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
- F16K5/04—Plug 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 cylindrical surfaces; Packings therefor
- F16K5/0457—Packings
- F16K5/0485—Spindle sealing
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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
- F16K5/00—Plug 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
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/18—Special arrangements for separating the sealing faces or for pressing them together for plugs with cylindrical surfaces
- F16K5/188—Sealing effected by the flowing medium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
本发明涉及油气田施工作业设备技术领域,具体地说,是一种防积砂旋塞阀,包括阀体、阀盖和设置在阀体内的旋塞杆,阀体和阀盖连接,旋塞杆的下端部和旋塞连接,阀体上端部设置一驱动器,驱动器与阀体连接,驱动器通过平键将扭矩传递给旋塞杆,旋塞外部设置一密封胶芯,密封胶芯的上部设置一活塞,旋塞、旋塞杆和活塞之间形成一环形密封腔体,密封腔体内设置弹簧,活塞、旋塞杆、密封胶芯和旋塞均位于阀体内芯里,阀体内芯与一油道连通,油道内部填充液压油用于驱动活塞的上下运动。本发明密封胶芯和旋塞之间的间隙可调,承压及输送流体的过程中旋塞、密封胶芯及阀体之间没有间隙,避免积砂。
Description
技术领域
本发明涉及油气田施工作业设备技术领域,具体地说,是一种防积砂旋塞阀。
背景技术
现有的旋塞阀的结构及原理为:现有的旋塞阀起密封作用的零件主要是金属阀体、金属旋塞、金属密封弧片以及非金属密封件,旋塞和密封弧片内侧以及阀体和密封弧片外侧都需要实现密封。阀体、旋塞及密封弧片上均设计有相同尺寸的流道孔,当三者的流道孔轴线共线时,旋塞阀处于开启状态,当旋塞绕其轴线转动90度时,旋塞的流道孔和弧片及阀体的流道孔处于垂直的状态,旋塞阀关闭。
现有旋塞阀存在的缺点及不足之处主要有如下三个:第一、现有旋塞阀的旋塞和密封弧片内侧之间是纯金属密封,为了实现密封,需要保证二者的加工精度极高,加工难度大,成本高,且容易损坏和失效;第二、密封弧片外侧和阀体之间为金属+非金属密封,面临相同的问题;第三、由于现有的旋塞、密封弧片及阀体均为金属,为了实现装配、维修保养及转动,需要保证三者之间留有一定的间隙,这就会导致在使用过程中阀体内部积砂,进而使密封失效,甚至导致整体报废。
随着我国油气田开采量的增高,“工厂式”压裂和“拉链式”压裂等高效压裂施工方式越来越多,并且,为了提高后期的产量,压裂施工的压力越来越高,施工排量也是越来越大,挤入井底的各种压裂砂也会越来越多,这些增产施工工艺都会导致原有旋塞阀的快速积砂、失效,增加施工的成本。
发明内容
本发明为了克服上述技术问题的不足,提供了一种防积砂旋塞阀,与压裂车、直管线、三通接头等配合使用,主要用于输送压裂液等高压流体,主要功能是控制管路的通断,完成油气田增产施工作业。这种旋塞阀通过设计新结构的密封胶芯,实现旋塞、密封胶芯以及阀体之间的间隙可调,解决加工难度高、易损坏和使用过程中易积砂的问题。
解决上述技术问题的技术方案如下:
一种防积砂旋塞阀,包括阀体、阀盖和设置在阀体内的旋塞杆,所述的阀体和阀盖通过螺纹连接,所述的旋塞杆的下端部和圆柱状旋塞连接,所述的阀体上端部设置一驱动器,所述的驱动器与阀体通过螺栓紧固连接,所述的驱动器通过平键与旋塞杆连接,所述的驱动器提供旋转扭矩,驱动器通过平键将扭矩传递给旋塞杆,所述的旋塞外部设置一圆筒状的密封胶芯,所述的密封胶芯的上部设置一活塞,所述的旋塞、旋塞杆和活塞之间形成一环形密封腔体,所述的密封腔体内设置弹簧,所述的弹簧顶在活塞与旋塞之间,所述的活塞、旋塞杆、密封胶芯和旋塞均位于阀体内芯里,所述的阀体内芯与一油道连通,所述的油道端部与直通接头连接,外部液压油通过所述的直通接头输入到油道中,进而进入活塞上部和阀体底面形成的环状空间内,用于驱动活塞运动。
进一步地说,所述的旋塞杆上开设有第三沟槽,用于安装第三O形圈和第三挡圈,所述的活塞的外圆柱面上开设有第一沟槽,用于安装第一O形圈和第一挡圈,所述的第一O形圈的两侧均设置有第一挡圈,用于实现双向防止第一O型圈挤出;所述的活塞的内表面上开设有第二沟槽,第二沟槽用于安装第二O形圈和第二挡圈,所述的第二O形圈的两侧均设置有第二挡圈,用于实现双向防止第二O形圈挤出。
进一步地说,所述的阀盖上端部还开设有第四沟槽,用于安装第四O形圈和第四挡圈,用于防止阀体内芯中输送的高压流体泄漏。
进一步地说,所述的密封胶芯为整体式结构或者分体式结构,所述的密封胶芯由橡胶或工程塑料制成。
本发明的有益效果是:
本发明提供了一种防积砂旋塞阀,采用非金属材质的密封胶芯代替传统的金属密封弧片,且密封胶芯和旋塞之间的间隙可调,承压及输送流体的过程中旋塞、密封胶芯及阀体之间没有间隙,避免积砂。而且本发明将常规的金属密封改为金属与非金属之间的密封,大大降低了密封难度及加工难度。
下面结合附图和具体实施方式对本发明作进一步详细的说明。
附图说明
图1是本发明的剖面结构示意图;
其中,1为阀体;2为密封胶芯;3为第一O形圈;4为第一挡圈;5为活塞;6为第二O形圈;7为第二挡圈;8为第三O形圈;9为第三挡圈;10为驱动器;11为旋塞杆;12为平键;13为弹簧,14为旋塞,15为直通接头,16为第四挡圈,17为第四O形圈,18为阀盖,19为油道,20为阀体内芯。
具体实施方式
实施例1:
如图1所示:一种防积砂旋塞阀,包括阀体1、阀盖18和设置在阀体1内的旋塞杆11,阀体1和阀盖18通过螺纹连接,所述的旋塞杆11的下端部和圆柱状旋塞14连接,所述的阀体1上端部设置一驱动器10,所述的驱动器10与阀体1通过螺栓紧固连接,所述的驱动器10通过平键12与旋塞杆11连接,所述的驱动器10提供旋转扭矩,驱动器10通过平键12将扭矩传递给旋塞杆11,所述的旋塞14外部设置一圆筒状的密封胶芯2,所述的密封胶芯2的上部设置一活塞5,所述的旋塞14、旋塞杆11和活塞5之间形成一环形密封腔体,所述的密封腔体内设置弹簧13,所述的弹簧13顶在活塞5与旋塞14之间,所述的活塞5、旋塞杆11、密封胶芯2和旋塞14均位于阀体内芯20里,所述的阀体内芯20与一油道19连通,所述的油道19端部与直通接头15连接,液压油通过所述的直通接头15进入油道19,进而进入活塞5上部和阀体1底面形成的环状空间内,用于驱动活塞5运动。所述的旋塞杆11上开设有第三沟槽,用于安装第三O形圈8、第三挡圈9,所述的活塞5上开设有第一沟槽和第二沟槽,第一沟槽用于安装第一O形圈3和第一挡圈4,所述的第一O形圈3的两侧均设置有第一挡圈4,用于实现双向防止第一O形圈3挤出的功能,同样的,第二沟槽用于安装第二O形圈6和第二挡圈7,所述的第二O形圈6的两侧均设置有第二挡圈7,用于实现双向防止第二O形圈6挤出的功能。所述的阀盖18上端部还开设有第四沟槽,用于安装第四O形圈17和第四挡圈16,用于防止阀体内芯20中的高压流体的泄露。所述的密封胶芯2为整体式结构由橡胶制成。
实施例2:
一种防积砂旋塞阀,包括阀体1、阀盖18和设置在阀体1内的旋塞杆11,阀体1和阀盖18通过螺纹连接,所述的旋塞杆11的下端部和圆柱状旋塞14连接,所述的阀体1上端部设置一驱动器10,所述的驱动器10与阀体1通过螺栓紧固连接,所述的驱动器10通过平键12与旋塞杆11连接,所述的驱动器10提供旋转扭矩,驱动器10通过平键12将扭矩传递给旋塞杆11,所述的旋塞14外部设置一圆筒状的密封胶芯2,所述的密封胶芯2的上部设置一活塞5,所述的旋塞14、旋塞杆11和活塞5之间形成一环形密封腔体,所述的密封腔体内设置弹簧13,所述的弹簧13顶在活塞5与旋塞14之间,所述的活塞5、旋塞杆11、密封胶芯2和旋塞14均位于阀体内芯20里,所述的阀体内芯20与一油道19连通,所述的油道19端部与直通接头15连接,液压油通过所述的直通接头15进入油道19,进而进入活塞5上部和阀体1底面形成的环状空间内,用于驱动活塞5运动。所述的旋塞杆11上开设有第三沟槽,用于安装第三O形圈8、第三挡圈9,所述的活塞5上开设有第一沟槽和第二沟槽,第一沟槽用于安装第一O形圈3和第一挡圈4,所述的第一O形圈3的两侧均设置有第一挡圈4,用于实现双向防止第一O形圈3挤出的功能,同样的,第二沟槽用于安装第二O形圈6和第二挡圈7,所述的第二O形圈6的两侧均设置有第二挡圈7,用于实现双向防止第二O形圈6挤出的功能。所述的阀盖18上端部还开设有第四沟槽,用于安装第四O形圈17和第四挡圈16,用于防止阀体内芯20中的高压流体泄漏。所述的密封胶芯2为分体式结构由工程塑料制成。
本发明的工作过程如下:
阀体1、圆筒状的密封胶芯2、圆柱状的旋塞14、旋塞杆11和阀盖18是本设计的核心零件,起承压和控压的作用。驱动器10位于阀体1的上端,通过螺栓紧固在阀体1上,驱动器10通过平键12将扭矩传递给旋塞杆11,旋塞杆11下端和旋塞14相互连接,旋塞14可以和旋塞杆11一起转动,实现旋塞阀的开启和关闭。
液压油可以通过直通接头15经油道19进入阀体1底部和活塞5顶部共同形成的环形空间内,随着液压油不断进入该环形空间,液压油驱动活塞5向下移动,压紧、压缩密封胶芯2,随着密封胶芯2的压缩,密封胶芯的高度变低,厚度变厚,旋塞14和阀体1之间的间隙被逐渐填满,防止阀腔内部高压介质泄露。活塞5上设计有沟槽,用于安装O形圈3、挡圈4、O形圈6和挡圈7,旋塞杆11上也设计有沟槽,用于安装O形圈8和挡圈9。O形圈3、挡圈4、O形圈6、挡圈7、O形圈8和挡圈9使阀体1、旋塞杆11和活塞5共同形成的环形空间为一密闭空间,防止这一密闭空间中的液压油泄露。当液压油通过直通接头15泄掉之后,弹簧13可以将活塞5弹起,同时密封胶芯2恢复之前的形状,将旋塞14松开,使旋塞14可以轻松的被转动。
阀盖18和阀体1之间通过螺纹连接,且阀盖18上设计有沟槽,用于安装O形圈17和挡圈16,防止阀腔内部的高压流体外漏。
通过液压油驱动活塞5向下移动,压缩、压紧密封胶芯2,随着密封胶芯2的压缩,密封胶芯2的高度变低,厚度变厚,旋塞14和阀体1之间的间隙被逐渐填满,防止阀腔内部高压介质泄露,实现阀门密封。当液压油泄掉之后,弹簧13可以将活塞5弹起,使密封胶芯2恢复之前的形状,将旋塞14松开,使旋塞14可以轻松的被转动。整体实现了间隙可调,即,当需要转动旋塞时,泄掉压力,使阀体1、密封胶芯2和旋塞14之间有间隙,可以轻松转动旋塞;当需要阀体1、密封胶芯2和旋塞14之间没有间隙,满足密封要求时,可以通过向系统中注入液压油,驱动活塞5下移压紧密封胶芯2来实现,由于在这种密封状态下阀体1、密封胶芯2和旋塞14之间没有间隙,可以有效的避免积砂,提升密封效果和使用寿命。
阀体1、圆筒状的密封胶芯2和圆柱状的旋塞14,这三部分是本发明的核心部分,阀体1是主体,用于安装其余零件,并承受内部压力。密封胶芯2和旋塞14是主要的密封件,通过控制加工精度和采用专门的加工工艺,阀体1的内腔的光洁度很高,旋塞14的表面光洁度及表面硬度也很高,这些都是有助于实现密封的要求,密封胶芯在承受轴向压力时,壁厚可以变大,有助于填充阀体1和旋塞14之间的间隙,实现密封和防积砂的功能。
驱动器10可以提供旋转扭矩,驱动器10和旋塞杆11之间通过平键12连接,驱动器的扭矩可以通过平键传递给旋塞杆,进而驱动旋塞14转动。如图1所示状态为旋塞阀的开启状态,当驱动器10工作,输出的扭矩通过平键12传递给旋塞杆11时,旋塞杆11就会将扭矩传递给旋塞14,进而驱动旋塞14转动,当旋塞14转动90度之后,旋塞14上的流道孔和阀体上的流道孔处于相互垂直交错的状态,达到旋塞阀的密封位置。
液压油可以通过直通接头15经油道进入阀体1、旋塞杆11和活塞5共同形成的环形空间内,随着液压油不断进入该环形空间,液压油驱动活塞5向下移动,压紧、压缩密封胶芯2,随着密封胶芯2的压缩,密封胶芯的高度变低,厚度变厚,旋塞14和阀体1之间的间隙被逐渐填满,防止阀腔内部高压介质泄露。活塞5上设计有沟槽,用于安装O形圈3、挡圈4、O形圈6和挡圈7,旋塞杆11上也设计有沟槽,用于安装O形圈8和挡圈9。O形圈3、挡圈4、O形圈6、挡圈7、O形圈8和挡圈9使阀体1、旋塞杆11和活塞5共同形成的环形空间为一密闭空间,防止这一密闭空间中的液压油泄露。当液压油通过直通接头15泄掉之后,弹簧13可以将活塞5弹起,同时密封胶芯2恢复之前的形状,将旋塞14松开,使旋塞14可以轻松的被转动。
以下作为拓展,本发明说明如下:
1、本发明采用整体式密封胶芯,作为对本发明的一种改进,可以将整体式胶芯改为分体式,同样属于本专利欲保护的点。
2、本发明中通过液压油驱动活塞来压紧和压缩密封胶芯,作为对本发明的一种改进,改为机械式、气动式等其他非液压驱动方式来实现相同的功能,同样属于本申请所附权利要求书所限定的范围内。
3、本发明是通过弹簧来驱动活塞上移,实现密封胶芯的复位,同样的,采用其他方式实现这一相同的功能,同样属于本申请所附权利要求书所限定的范围内。
4、本发明中的旋塞为圆柱状设计,密封胶芯为圆筒状设计,阀体内腔也是圆柱状设计,作为一种改进设计,可以将旋塞、密封胶芯和阀体内腔设计为圆锥等非圆柱状的设计,同样属于本申请所附权利要求书所限定的范围内。
5、本发明中的旋塞阀采用驱动器提供旋转扭矩,驱动旋塞转动,作为一种改进设计,将驱动器气动、电动、机械结构等其他形式的驱动方式,同样属于本申请所附权利要求书所限定的范围内。
6、本发明中的阀盖和阀体之间采用螺纹连接,作为一种改进,将螺纹连接改为螺栓紧固等其他连接方式,同样属于本申请所附权利要求书所限定的范围内。
7、本发明中的密封方式,都是采用O形圈+挡圈组合密封的形式,对于本专业的技术人员来说,实现相同的密封,有很多的密封形式,做的其他改动,同样属于本申请所附权利要求书所限定的范围内。
Claims (4)
1.一种防积砂旋塞阀,包括阀体、阀盖和设置在阀体内的旋塞杆,其特征在于,所述的阀体和阀盖通过螺纹连接,所述的旋塞杆的下端部和圆柱状旋塞连接,所述的阀体上端部设置一驱动器,所述的驱动器与阀体通过螺栓紧固连接,所述的驱动器通过平键与旋塞杆连接,所述的驱动器提供旋转扭矩,驱动器通过平键将扭矩传递给旋塞杆,所述的旋塞外部设置一圆筒状的密封胶芯,所述的密封胶芯的上部设置一活塞,所述的旋塞、旋塞杆和活塞之间形成一环形密封腔体,所述的密封腔体内设置弹簧,所述的弹簧顶在活塞与旋塞之间,所述的活塞、旋塞杆、密封胶芯和旋塞均位于阀体内芯里,所述的阀体内芯与一油道连通,所述的油道端部与直通接头连接,外部液压油通过所述的直通接头输入到油道中,进而进入活塞上部和阀体底面形成的环状空间内,用于驱动活塞运动。
2.根据权利要求1所述的防积砂旋塞阀,其特征在于,所述的旋塞杆上开设有第三沟槽,用于安装第三O形圈和第三挡圈,所述的活塞的外圆柱面上开设有第一沟槽,用于安装第一O形圈和第一挡圈,所述的第一O形圈的两侧均设置有第一挡圈,用于实现双向防止第一O型圈挤出;所述的活塞的内表面上开设有第二沟槽,第二沟槽用于安装第二O形圈和第二挡圈,所述的第二O形圈的两侧均设置有第二挡圈,用于实现双向防止第二O形圈挤出。
3.根据权利要求1所述的防积砂旋塞阀,其特征在于,所述的阀盖上端部还开设有第四沟槽,用于安装第四O形圈和第四挡圈,用于防止阀体内芯中输送的高压流体泄漏。
4.根据权利要求1所述的防积砂旋塞阀,其特征在于,所述的密封胶芯为整体式结构或者分体式结构,所述的密封胶芯由橡胶或工程塑料制成。
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