The utility model relates to a low torque and high pressure two-way cock valve. The valve body is provided with an upper through hole and a lower pass hole. An adjustment nut, an upper valve seat, a valve ball and a lower valve seat are arranged in the upper through hole, an installation hole is provided on one side of the valve body, a first flow hole is provided in the upper and lower valve seats, and a second flow hole is provided in the valve ball, and the valve ball is provided with a second flow hole and is arranged in the valve ball. There are knobs between the installation holes. There are several ring seal grooves on the outer wall of the knob, upper seat and lower valve seat. There is a O shaped seal ring between the ring seal groove and the valve body. There is a limiting ring between the knob and the lower valve seat. The other end of the lower valve seat is equipped with a wave spring between the other end of the lower valve seat and the valve body. The utility model has a novel and compact structure and torque. It is small, flexible in rotation, simple in structure, convenient in assembly and dismantling, and with high reliability hard seal structure, which can make drilling fluid keep flowing without pressure drop, bear double direction high and bottom high pressure, avoid leakage and blowout.
【技术实现步骤摘要】
一种低扭矩高压双向旋塞阀
本技术涉及一种低扭矩高压双向旋塞阀,属于石油工业钻井
技术介绍
石油工业钻井利用钻机设备及破岩工具破碎地层形成井筒,以专用设备和技术在预先选定的地表位置处,向下或一侧钻出一定直径的圆柱孔眼,并钻达地下油气层,目地是进行地质评价、发现油气藏、开发油气藏,石油钻进过程中涉及双向旋塞阀,使钻井液通过,但当出现井涌或井喷征兆时,通过关闭旋塞阀可起到控制作用。现有技术中的钻井旋塞阀有很多,但由于油田井控作业中,地表压力较大,现有双向旋塞阀结构不仅装配拆卸不便造成维护与保养困难,而且存在扭矩大,强度和密封性能不佳的问题,易产生渗漏现象,无法灵活及时封闭阀门,造成泵机等石油机械损坏,出现井涌或井喷现象,浪费原油资源,污染环境。
技术实现思路
本技术的目的是针对现有技术的缺陷,提供一种低扭矩高压双向旋塞阀,扭矩小,转动灵活,结构简单,组装、拆卸方便,采用高可靠性的硬密封结构,可使钻井液无压降地自留流过,承受上下双向高压,避免渗漏、井喷现象。本技术是通过如下的技术方案予以实现的:一种低扭矩高压双向旋塞阀,包括阀体,所述阀体内设有上通孔和下通孔,所述上通孔与下通孔连通且同轴设置,其中,由上通孔至下通孔方向,所述上通孔内依次设有调节螺母、上阀座、阀球和下阀座,所述调节螺母外壁与上通孔内壁之间设有配合螺纹,所述上阀座和下阀座内均设有第一流孔,且端部与阀球外壁形状配合;所述阀体一侧设有安装孔,所述阀球内设有第二流孔,且与安装孔之间设有旋钮,所述旋钮、上阀座和下阀座外壁上均设有若干环形密封槽,若干环形密封槽均匀间隔设置,所述环形密封槽与阀体之间设有O形密封 ...
【技术保护点】
1.一种低扭矩高压双向旋塞阀,包括阀体,所述阀体内设有上通孔和下通孔,所述上通孔与下通孔连通且同轴设置,其特征为,由上通孔至下通孔方向,所述上通孔内依次设有调节螺母、上阀座、阀球和下阀座,所述调节螺母外壁与上通孔内壁之间设有配合螺纹,所述上阀座和下阀座内均设有第一流孔,且端部与阀球外壁形状配合;所述阀体一侧设有安装孔,所述阀球内设有第二流孔,且与安装孔之间设有旋钮,所述旋钮、上阀座和下阀座外壁上均设有若干环形密封槽,若干环形密封槽均匀间隔设置,所述环形密封槽与阀体之间设有O形密封圈,所述旋钮内设有L形拨杆,且与下阀座一端之间设有限位隔环,所述下阀座另一端与阀体之间设有波形弹簧。
【技术特征摘要】
1.一种低扭矩高压双向旋塞阀,包括阀体,所述阀体内设有上通孔和下通孔,所述上通孔与下通孔连通且同轴设置,其特征为,由上通孔至下通孔方向,所述上通孔内依次设有调节螺母、上阀座、阀球和下阀座,所述调节螺母外壁与上通孔内壁之间设有配合螺纹,所述上阀座和下阀座内均设有第一流孔,且端部与阀球外壁形状配合;所述阀体一侧设有安装孔,所述阀球内设有第二流孔,且与安装孔之间设有旋钮,所述旋钮、上阀座和下阀座外壁上均设有若干环形密封槽,若干环形密封槽均匀间隔设置,所述环形...
【专利技术属性】
技术研发人员:陈银海,陈弘诠,
申请(专利权)人:盐城市恒通石油机械制造有限公司,
类型:新型
国别省市:江苏,32
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