The utility model discloses a protective cover of a core taking tube assembly, which comprises a mounting ring and an elastic ring which are matched with the inner diameter of the core. The outer wall of the mounting ring can contact and clamp with the inner wall of the protective tube. One end of the mounting ring is provided with a sealing plate for sealing the end. The sealing plate can be separated from the mounting ring when squeezed by the core. The elastic ring is connected with the other end of the mounting ring, and the outer diameter of the elastic ring is less than The inner diameter of the protective tube, the end of the elastic ring is provided with a convex extending to the ring, and a plurality of grooves are arranged on the elastic ring along the axial direction, all of which divide the elastic ring into a plurality of elastic flaps. The protective cover of the utility model is arranged at the front end of the protective pipe, which can not only prevent sundries from entering the semi combined pipe, but also not affect the coring, and at the same time can prevent the core from falling out of the semi combined pipe.
【技术实现步骤摘要】
一种取芯管组件防护盖
本技术涉及岩土取芯领域,具体涉及一种取芯管组件防护盖。
技术介绍
取芯是指为了解地层地质情况,对所钻地层进行岩土取样的过程,是通过将取芯钻头与空心钻杆相连进行取芯。取芯钻头是由钻头体和设置在钻头体前端的多个合金刀片构成,在钻头体内开设有前后贯通的取芯通孔,空心钻杆内设有取芯管组件。目前公司开发了一种取芯管组件包括两个半合管和套设于其外的保护管,使用时两个半合管拼合形成圆管。在取芯结束后,将取芯管组件从钻杆中取出并移除保护管,两个半合管自动分开即可得到岩芯。但是该取芯管组件在使用前经常会有杂物等进入到半合管内,进而会影响所取出的岩芯质量;另外,在取芯时钻机轨道滑移进行清孔时,以及在取芯结束后拉出取芯管组件时,岩芯容易从半合管内掉出。
技术实现思路
本技术目的在于:针对取芯管组件使用时存在进渣以及掉芯的问题,提供一种取芯管组件防护盖,该防护盖既能够避免杂物等进入到半合管内,又不影响取芯,同时能够避免岩芯从半合管内掉出。为了实现上述目的,本技术采用的技术方案为:一种取芯管组件防 ...
【技术保护点】
1.一种取芯管组件防护盖,其特征在于,包括内径与岩芯适配的安装环和弹性环,所述安装环外壁能与保护管内壁接触卡紧,在安装环一端设有用于封闭该端的封板,所述封板受到岩芯挤压时能与安装环分离;所述弹性环对接于安装环另一端,且弹性环外径小于保护管内径,所述弹性环端部设有向环内延伸的凸起,在弹性环上沿轴向开设有多个切槽,所有的切槽将弹性环分割为多个弹性瓣。/n
【技术特征摘要】
1.一种取芯管组件防护盖,其特征在于,包括内径与岩芯适配的安装环和弹性环,所述安装环外壁能与保护管内壁接触卡紧,在安装环一端设有用于封闭该端的封板,所述封板受到岩芯挤压时能与安装环分离;所述弹性环对接于安装环另一端,且弹性环外径小于保护管内径,所述弹性环端部设有向环内延伸的凸起,在弹性环上沿轴向开设有多个切槽,所有的切槽将弹性环分割为多个弹性瓣。
2.根据权利要求1所述的取芯管组件防护盖,其特征在于,所述安装环外壁为与保护管内壁相适配的...
【专利技术属性】
技术研发人员:李智,田赟,陆昕,
申请(专利权)人:成都哈迈岩土钻掘设备厂,
类型:新型
国别省市:四川;51
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