WO2020034367A1 - 自动触发对接开启的翻板结构 - Google Patents

自动触发对接开启的翻板结构 Download PDF

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Publication number
WO2020034367A1
WO2020034367A1 PCT/CN2018/109037 CN2018109037W WO2020034367A1 WO 2020034367 A1 WO2020034367 A1 WO 2020034367A1 CN 2018109037 W CN2018109037 W CN 2018109037W WO 2020034367 A1 WO2020034367 A1 WO 2020034367A1
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Prior art keywords
shoulder
valve
valve seat
spring
butt
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PCT/CN2018/109037
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English (en)
French (fr)
Inventor
高明忠
谢和平
陈领
张晋京
王满
王英伟
张茹
鲁义强
何志强
李聪
华夏
明传剑
彭高友
陆彤
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Sichuan University
Shenzhen University
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Sichuan University
Shenzhen University
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Publication of WO2020034367A1 publication Critical patent/WO2020034367A1/zh
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells

Definitions

  • the invention relates to the technical field of coring equipment, in particular to a flip structure for automatically triggering a docking opening.
  • the upper end of the pressure maintaining cylinder is generally sealed with a piston, and the lower end of the pressure maintaining cylinder is usually sealed with a ball valve or a flap valve.
  • the ball valve has a complicated structure and takes up a lot of space, which limits the diameter of the core that can be drilled.
  • the ball valve requires high processing technology, and when the pressure is large, the liquid in the pressure retaining tube will seep from the gap between the ball valve and the core tube. Cannot maintain higher pressure.
  • the existing flap valve structure wherein the flap valve includes a valve seat (No. 1) and a valve disc (No. 2), the valve seat is installed on the inner wall of the outer cylinder (No. 4), and one end of the valve disc is connected with The outer side wall of the upper end of the valve seat is movably connected.
  • the valve disc sealing surface is provided with a valve disc sealing ring (No. 24).
  • the top of the valve seat has a valve port sealing surface (No. 11) that matches the valve disc.
  • valve flap is automatically closed under the action of the shrapnel (No. 3), but when docking with the test chamber, the valve flap needs to be opened before the core barrel can be opened.
  • the rock core is pushed into the experimental cabin, and the valve flap in the existing flap valve structure can only be opened upwards.
  • the valve flap is opened, there is a pressure barrier, which is difficult to open and inconvenient to operate.
  • the invention aims to provide a flip structure that automatically triggers the docking opening, and can be operated outside the barrel when docking with the experimental cabin to achieve automatic opening.
  • the flap structure that automatically triggers butt-opening includes a flap valve and an outer cylinder.
  • the flap valve includes a valve seat, a valve disc and a spring leaf.
  • the valve seat is arranged in the outer cylinder.
  • the valve disc is hinged with the upper end of the valve seat.
  • At least one through hole is provided on the side wall of the outer cylinder.
  • the outer wall of the valve seat is provided with elastic clamping teeth adapted to the through hole.
  • the upper end of the elastic clamping tooth is connected to the valve seat. Operationally resists the through hole; one end of the spring leaf is slidably connected with the outer side wall of the valve disc, and the other end of the spring leaf is connected with the outer cylinder.
  • a first shoulder is provided on the outer wall of the valve seat, and a second shoulder is provided on the inner wall of the outer cylinder.
  • the first shoulder is located above the elastic clamping teeth, and a spring is provided between the second shoulder and the first shoulder. When the lower end of the tooth abuts against the through hole, the spring is in a compressed state.
  • the inner wall of the outer tube has a third shoulder adapted to the first shoulder, and the second shoulder is located above the third shoulder.
  • At least two through holes are provided on the outer cylinder at equal intervals in the circumferential direction.
  • three through holes are provided on the outer cylinder at equal intervals in the circumferential direction.
  • a circle of elastic clamping teeth is provided on the valve seat.
  • a seal ring is provided between the valve seat and the outer cylinder.
  • the sealing ring is installed on the valve seat.
  • a slide groove is provided on the outer surface of the valve disc, and the other end of the spring piece is installed in the slide groove.
  • the spring piece includes a rotating shaft, a slider, and an elastic elastic piece. One end of the elastic piece is connected to the slider, and the other end of the elastic piece is connected to the rotating shaft.
  • the rotating shaft is installed on the outer cylinder, and the sliding piece is installed in the sliding groove.
  • the present invention has the following beneficial effects:
  • the invention has a simple structure and an ingenious design, which can be triggered outside the barrel to achieve automatic docking opening, and the core can be pushed into the test chamber from the core barrel .
  • the valve flap is opened downward, and the downward opening is not blocked by pressure So it's easier.
  • FIG. 1 is a schematic structural diagram of the prior art
  • FIG. 2 is a schematic structural diagram of the present invention when a valve flap is opened upward;
  • FIG. 3 is a schematic structural diagram of the present invention when a valve flap is closed
  • FIG. 4 is a schematic structural diagram of the present invention when a valve flap is opened downward;
  • Figure 5 is a longitudinal view of the valve disc
  • Figure 6 is a lateral view of the valve disc
  • FIG. 7 is a schematic structural diagram of an elastic clamping ring gear
  • the flip structure of the automatic triggering butt-opening disclosed in the present invention includes a flap valve and an outer cylinder 4.
  • the flap valve includes a valve seat 1, a valve disc 2 and a spring leaf 3, and a valve seat. 1 is located in the outer cylinder 4, the valve flap 2 is hinged to the upper end of the valve seat 1, the top of the valve seat 1 has a valve port sealing surface 11 matching the valve flap 2, and the side wall of the outer cylinder 4 is provided with at least one through hole 41, through hole
  • the number of 41 can be set according to needs, for example, two, three or more. In this embodiment, three through holes 41 are provided on the outer cylinder 4 at regular intervals in the circumferential direction.
  • the outer wall of the valve seat 1 is provided with an elastic clamping tooth 12 adapted to the through hole 41.
  • the upper end of the elastic clamping tooth 12 is connected to the valve seat 1.
  • the lower end of the elastic clamping tooth 12 is a free end, and the free end is operatively resisted at the through hole 41. .
  • a first shoulder 81 is provided on the outer wall of the valve seat 1, and the first shoulder 81 is located above the elastic clamping teeth 12.
  • a second shoulder 82 is provided on the inner wall of the outer cylinder 4, and a second shoulder 82 is provided between the first shoulder 81 and the first shoulder 81.
  • Spring 5 The upper end of the spring 5 is connected to the second shoulder 82, and the lower end of the spring 5 is connected to the first shoulder 81.
  • the spring 5 is a coil spring, and the coil spring is sheathed on the outside of the valve seat 1. When the lower end of the elastic clamping tooth 12 abuts against the through hole 41, the spring 5 is in a compressed state.
  • the inner wall of the outer cylinder 4 has a third shoulder 83 adapted to the first shoulder 81, and the second shoulder 82 is located above the third shoulder 83.
  • the first shoulder 81 and the third shoulder 83 interfere with each other, and are used to restrict upward movement of the valve seat 1.
  • the spring piece 3 includes a rotating shaft 31, a slider 33, and an elastic elastic piece 32.
  • the elastic piece 32 is a curved steel plate.
  • One end of the elastic piece 32 is connected to the slider 33, and the other end of the elastic piece 32 is connected to the rotating shaft 31.
  • the rotating shaft 31 is mounted on the outer cylinder 4.
  • the slider 33 is installed in the chute 21.
  • the elastic piece 32 is always connected to the outer cylinder 4 and the valve flap 2 in the straight and bent state, so that the elastic piece 32 serves as a restraint when the valve flap 2 is opened.
  • a circle of elastic clamping teeth 12 is provided on the valve seat 1.
  • the elastic clamping ring gear is provided with a plurality of elastic clamping teeth 12, and the elastic clamping ring gear can be installed in an annular groove on the outer wall of the valve seat 1.
  • a plurality of sealing rings 6 are provided between the valve seat 1 and the outer cylinder 4, and the sealing rings 6 are installed on the valve seat 1 to achieve sealing between the valve seat 1 and the outer cylinder 4.
  • the elastic piece 32 bends, pushes the valve flap 2 to turn down, and realizes sealing cooperation with the valve seat 1.
  • the elastic clamping tooth 12 is reset from the through hole 41 to release the lock.
  • the valve seat 1 moves downward and the end connected to the valve flap 2 moves downward.
  • the other end of the valve flap 2 is restrained by the elastic piece 32, so that the valve flap 2 moves downward and reverses.
  • the docking operation In the docking operation, first connect the fidelity cabin to the experimental cabin, then adjust the pressure in the test cabin to be equal to the fidelity cabin, trigger the elastic clamping teeth outside the cylinder, and realize the flap valve to automatically open, and then remove the core from the core.
  • the cylinder is pushed into the test chamber; at the same time, when the docking is opened, the valve flap opens downward, and it is easier to open downward without being blocked by pressure and triggering the inner cylinder.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Check Valves (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Safety Valves (AREA)

Abstract

一种自动触发对接开启的翻板结构，包括翻板阀和外筒（4），翻板阀包括阀座（1）、阀瓣（2）和弹簧片（3），阀座设于外筒内，阀瓣与阀座上端铰接，阀座顶部有与阀瓣匹配的阀口密封面（11），外筒侧壁设有通孔（41），阀座外壁设有与通孔适配的弹性卡齿（12），弹性卡齿上端与阀座连接，弹性卡齿下端可操作地抵挡在通孔处；弹簧片一端与阀瓣外侧壁滑动连接，弹簧片另一端与外筒连接。阀座外壁设有第一台肩（81），第一台肩位于弹性卡齿上方，外筒内壁有第二台肩（82）以及与第一台肩适配的第三台肩（83），第二台肩与第一台肩之间设有弹簧（5）。当弹性卡齿下端抵挡在通孔处时，第一台肩与第三台肩相抵触，弹簧为压缩状态。该翻板结构可在筒外触发，实现自动对接开启；同时开启不受压力阻挡。

Description

自动触发对接开启的翻板结构 技术领域
本发明涉及取芯设备技术领域，尤其涉及自动触发对接开启的翻板结构。
背景技术
目前，在保压取芯领域，保压筒上端一般采用活塞密封，保压筒下端通常采用球阀密封或者翻板阀密封。球阀结构比较复杂，空间占据大，限制了钻取岩芯的直径，球阀加工工艺要求高，且当压力较大时，保压筒里面的液体会从球阀与岩芯筒之间的缝隙渗出，不能维持较高的压力。
如图1所示，现有的翻板阀结构，其中，翻板阀包括阀座(序号1)和阀瓣(序号2)，阀座安装在外筒(序号4)内壁上，阀瓣一端与阀座上端外侧壁活动连接，阀瓣密封面上设有阀瓣密封圈(序号24)，阀座顶部有与阀瓣匹配的阀口密封面(序号11)，当岩芯筒(序号7)位于阀座中时，由于岩芯筒的作用力，使阀瓣开启90度，并隐藏在岩芯筒与外筒(序号4)之间。在取芯阶段，将岩芯筒向上提升到一定高度后，阀瓣在弹片(序号3)的作用下自动关闭，但在与试验舱对接时，需要将阀瓣开启后才能将岩心筒内的岩芯推入实验舱，现有翻板阀结构中的阀瓣只能向上开启，开启时阀瓣存在压力方面的阻挡，开启困难且不方便操作。
发明内容
本发明旨在提供自动触发对接开启的翻板结构，与实验舱对接操作时可筒外操作，实现自动开启。
为达到上述目的，本发明采用的技术方案如下：
自动触发对接开启的翻板结构，包括翻板阀和外筒，翻板阀包括阀座、阀瓣和弹簧片，阀座设于外筒内，阀瓣与阀座上端铰接，阀座顶部有与阀瓣匹配的阀口密封面，外筒侧壁设有至少一个通孔，阀座外壁设有与通孔适配的弹性卡齿，弹性卡齿上端与阀座连接，弹性卡齿下端可操作地抵挡在通孔处；所述弹簧片一端与阀瓣外侧壁滑动连 接，弹簧片另一端与外筒连接。
进一步的，阀座外壁设有第一台肩，外筒内壁有第二台肩，第一台肩位于弹性卡齿上方，第二台肩与第一台肩之间设有弹簧，当弹性卡齿下端抵挡在通孔处时，弹簧为压缩状态。
进一步的，外筒内壁有与第一台肩适配的第三台肩，第二台肩位于第三台肩上方，当弹性卡齿下端抵挡在通孔处时，第一台肩与第三台肩相抵触。
进一步的，外筒上周向等间隔设有至少两个通孔。
优选地，外筒上周向等间隔设有三个通孔。
进一步优选地，阀座上设有一圈弹性卡齿。
其中，阀座与外筒之间设有密封圈。
其中，密封圈安装在阀座上。
其中，阀瓣外表面设有滑槽，所述弹簧片另一端装在滑槽中。
进一步的，弹簧片包括转轴、滑块和具有弹性的弹片，弹片一端与滑块连接，弹片另一端与转轴连接，转轴安装在外筒上，滑块装在滑槽中。
与现有技术相比，本发明具有以下有益效果：
本发明结构简单，设计巧妙, 可在筒外触发，实现自动对接开启， 便可将岩芯从岩心筒推入试验舱内；同时对接开启时阀瓣向下开启，向下开启不受压力阻挡因而更容易。
附图说明
图1是现有技术的结构示意图；
图2是阀瓣向上开启时本发明的结构示意图；
图3是阀瓣关闭时本发明的结构示意图；
图4是阀瓣向下开启时本发明的结构示意图；
图5是阀瓣的纵向视图；
图6是阀瓣的横向视图；
图7是弹性卡齿圈的结构示意图；
图中：1-阀座、2-阀瓣、3-弹簧片、4-外筒、5-弹簧、6-密封圈、7-岩芯筒、11-阀口密封面、12-弹性卡齿、21-滑槽、24-阀瓣密封圈、31-转轴、32-弹片、33-滑块、41-通孔、81-第一台肩、82-第二台肩、83-第三台肩。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图，对本发明进行进一步详细说明。
如图2、3、4所示，本发明公开的自动触发对接开启的翻板结构，包括翻板阀和外筒4，翻板阀包括阀座1、阀瓣2和弹簧片3，阀座1设于外筒4内，阀瓣2与阀座1上端铰接，阀座1顶部有与阀瓣2匹配的阀口密封面11，外筒4侧壁设有至少一个通孔41，通孔41的个数可以根据需要设置，例如两个、三个或者更多，本实施方式中，外筒4上周向等间隔设有三个通孔41。阀座1外壁设有与通孔41适配的弹性卡齿12，弹性卡齿12上端与阀座1连接，弹性卡齿12下端为自由端，其自由端可操作地抵挡在通孔41处。
阀座1外壁设有第一台肩81，第一台肩81位于弹性卡齿12上方，外筒4内壁有第二台肩82，第二台肩82与第一台肩81之间设有弹簧5。弹簧5上端与第二台肩82连接，弹簧5下端与第一台肩81连接。弹簧5选择螺旋弹簧，螺旋弹簧外套于阀座1外侧。当弹性卡齿12下端抵挡在通孔41处时，弹簧5为压缩状态。
在另一个实施方式中，外筒4内壁有与第一台肩81适配的第三台肩83，第二台肩82位于第三台肩83上方，当弹性卡齿12下端抵挡在通孔41处时，第一台肩81与第三台肩83相抵触，用于限制阀座1向上移动。
弹簧片3一端与阀瓣2外侧壁滑动连接，弹簧片3另一端与外筒4连接。如图5、6所示，阀瓣2外表面设有滑槽21，弹簧片3另一端装在滑槽21中。弹簧片3包括转轴31、滑块33和具有弹性的弹片32，弹片32为曲线型钢片，弹片32一端与滑块33连接，弹片32另一端与转轴31连接，转轴31安装在外筒4上，滑块33装在滑槽21中。如图2、3、4所示，弹片32在伸直和弯曲状态时始终连接外筒4和阀瓣2，使弹片32作为阀瓣2开启时的牵制。
在另一个实施方式中，阀座1上设有一圈弹性卡齿12。如图7所示，弹性卡齿圈上设有若干个弹性卡齿12，将弹性卡齿圈装在阀座1外壁的环形凹槽中即可。
在阀座1与外筒4之间设有多个密封圈6，密封圈6安装在阀座1上，用于实现阀座1与外筒4之间的密封。
如图2、3所示，当阀瓣2向上开启或关闭时，弹性卡齿12在通孔41处，弹性卡齿12在自身弹性的作用下通过通孔41向外展开从 而抵挡在外筒4上，使阀座1不可下移，此时由于第一台肩81与第三台肩83相抵触，阀座1无法上移，则锁定阀座密封位置。
如图3所示，触发密封时，弹片32弯曲，推动阀瓣2下翻，与阀座1实现密封配合。如图4所示，对接操作时，从通孔41处将弹性卡齿12复位则解除锁定，在弹簧5弹力推动下，阀座1下移并牵动阀瓣2与之连接的一端下移，阀瓣2的另一端由弹片32牵制，使阀瓣2产生下移反转的动作，当阀瓣2翻转至垂直位置时，则实现密封对接开启。
对接操作时，需首先将保真舱与实验舱连接，然后调节试验舱中的压强至与保真舱相等，在筒外触发弹性卡齿，实现翻板阀自动开启，然后将岩芯从岩心筒推入试验舱内；同时对接开启时阀瓣向下开启，向下开启不受压力和触发内筒的阻挡因而更容易。
当然，本发明还可有其它多种实施方式，在不背离本发明精神及其实质的情况下，熟悉本领域的技术人员可根据本发明作出各种相应的改变和变形，但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。

Claims (10)

  1. 自动触发对接开启的翻板结构，包括翻板阀和外筒(4)，翻板阀包括阀座(1)、阀瓣(2)和弹簧片(3)，阀座(1)设于外筒(4)内，阀瓣(2)与阀座(1)上端铰接，阀座(1)顶部有与阀瓣(2)匹配的阀口密封面(11)，其特征在于:外筒(4)侧壁设有至少一个通孔(41)，阀座(1)外壁设有与通孔(41)适配的弹性卡齿(12)，弹性卡齿(12)上端与阀座(1)连接，弹性卡齿(12)下端可操作地抵挡在通孔(41)处；所述弹簧片(3)一端与阀瓣(2)外侧壁滑动连接，弹簧片(3)另一端与外筒(4)连接。
  2. 根据权利要求所述的自动触发对接开启的翻板结构，其特征在于：阀座(1)外壁设有第一台肩(81)，外筒(4)内壁有第二台肩(82)，第一台肩(81)位于弹性卡齿(12)上方，第二台肩(82)与第一台肩(81)之间设有弹簧(5)，当弹性卡齿(12)下端抵挡在通孔(41)处时，弹簧(5)为压缩状态。
  3. 根据权利要求2所述的自动触发对接开启的翻板结构，其特征在于：外筒(4)内壁有与第一台肩(81)适配的第三台肩(83)，第二台肩(82)位于第三台肩(83)上方，当弹性卡齿(12)下端抵挡在通孔(41)处时，第一台肩(81)与第三台肩(83)相抵触。
  4. 根据权利要求1所述的自动触发对接开启的翻板结构，其特征在于：外筒(4)上周向等间隔设有至少两个通孔(41)。
  5. 根据权利要求4所述的自动触发对接开启的翻板结构，其特征在于：外筒(4)上周向等间隔设有三个通孔(41)。
  6. 根据权利要求1、4或5所述的自动触发对接开启的翻板结构，其特征在于：阀座(1)上设有一圈弹性卡齿(12)。
  7. 根据权利要求1所述的自动触发对接开启的翻板结构，其特征在于：阀座(1)与外筒(4)之间设有密封圈(6)。
  8. 根据权利要求7所述的自动触发对接开启的翻板结构，其特征在于：密封圈(6)安装在阀座(1)上。
  9. 根据权利要求1所述的自动触发对接开启的翻板结构，其特征在于：阀瓣(2)外表面设有滑槽(21)，所述弹簧片(3)另一端装在滑槽(21)中。
  10. 根据权利要求9所述的自动触发对接开启的翻板结构，其特征在于：弹簧片(3)包括转轴(31)、滑块(33)和具有弹性的弹片(32)，弹片(32)一端与滑块(33)连接，弹片(32)另一端与转 轴(31)连接，转轴(31)安装在外筒(4)上，滑块(33)装在滑槽(21)中。
PCT/CN2018/109037 2018-08-13 2018-09-30 自动触发对接开启的翻板结构 Ceased WO2020034367A1 (zh)

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