WO2018233218A1 - 一种便携式钻机及其动力头水封结构 - Google Patents

一种便携式钻机及其动力头水封结构 Download PDF

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Publication number
WO2018233218A1
WO2018233218A1 PCT/CN2017/113590 CN2017113590W WO2018233218A1 WO 2018233218 A1 WO2018233218 A1 WO 2018233218A1 CN 2017113590 W CN2017113590 W CN 2017113590W WO 2018233218 A1 WO2018233218 A1 WO 2018233218A1
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WIPO (PCT)
Prior art keywords
water seal
power head
ring
drilling machine
machine according
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Application number
PCT/CN2017/113590
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English (en)
French (fr)
Inventor
王坚
刘绪勇
Original Assignee
珠海市英格尔特种钻探设备有限公司
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Application filed by 珠海市英格尔特种钻探设备有限公司 filed Critical 珠海市英格尔特种钻探设备有限公司
Priority to CA3066018A priority Critical patent/CA3066018C/en
Publication of WO2018233218A1 publication Critical patent/WO2018233218A1/zh

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B3/00Rotary drilling
    • E21B3/02Surface drives for rotary drilling
    • E21B3/022Top drives
    • 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
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • 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
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/32Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3248Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports

Definitions

  • the present invention relates to the field of drilling rig technology, and in particular, to a portable drilling machine and a power head water sealing structure thereof.
  • the present invention is based on a Chinese patent application filed on June 19, 2017, the application number of which is incorporated herein by reference.
  • the conventional water-sealed seal of the top drive head of a portable full hydraulic drill basically adopts a rotary pressure seal or a 0-ring seal with relatively weak compensation capability.
  • the seal has a short life and replacement. Trouble, and the cost of rotary pressure sealing is high, especially in the case of using solid phase drilling fluid or circulating drilling fluid. Because the drilling fluid contains a certain solid phase, the sealing ring is easily damaged, frequently replaced, and affects the work. effectiveness.
  • the present invention provides a power head water seal structure of a portable drilling machine
  • the present invention also provides a portable drilling machine having the above-described power head water seal structure.
  • the technical solution adopted by the present invention to solve the technical problem thereof is to provide a power head water seal structure of a portable drilling machine, comprising a power head main shaft and a water seal inner sleeve fixedly arranged on the power head main shaft, and the power head main shaft
  • the axial rafter is provided with a drilling fluid passage
  • the water seal inner sleeve is further provided with a water seal jacket
  • the water seal jacket is installed on the power head casing, and the water seal jacket and the water seal inner sleeve penetrate through the injection passage leading to the drilling fluid passage.
  • the adjusting ring can be adjusted up and down with respect to the water sealing jacket, and the adjusting ring is pressed against the combined sealing ring below.
  • the two sets of combined sealing rings are radially deformed under pressure and compensate for the wear of the combined sealing ring.
  • the two sets of combined sealing rings are symmetrically distributed up and down, and the lower combined sealing ring includes an anti-extrusion ring, a V-ring and a sand blocking ring from bottom to top.
  • the V-ring includes two V-shaped rubber rings and two V-shaped rubber rings, and the V-shaped rubber ring and the V-shaped rubber ring are closely spaced.
  • the sand retaining ring below is provided with a sealing lip extending upwardly between the water seal inner sleeve and the support ring
  • the sealing lip is gradually narrowed from the bottom to the top, and the inner side of the sealing lip is fitted to the outer side of the water seal inner sleeve.
  • the inner side of the support ring is provided with a slope matching the outer side surface of the sealing lip.
  • the adjustment ring is pressed against the anti-extrusion ring by a gasket.
  • the water seal jacket is provided with a flange, and the flange is mounted on the power head shell by at least two limit bolts
  • the flange is sleeved on the polished rod of the limit bolt and connected to the head of the limit bolt by a spring. Further, the two limit bolts are equal height limit bolts.
  • the support ring penetrates a plurality of water outlets in the circumferential direction
  • the water seal inner sleeve penetrates a plurality of water injection ports in the circumferential direction
  • an annular cavity is formed between the inner middle portion of the water seal inner sleeve and the main shaft of the power head, and the annular cavity Type 0 seals are provided above and below.
  • the power head spindle is provided with a plurality of through holes communicating the annular cavity and the drilling fluid passage, and the plurality of through holes are distributed on different height sections along the axis direction of the power head spindle.
  • the adjusting ring is screwed on the lower end of the water seal jacket, and the water seal jacket is further provided with a lock ring for locking the adjusting ring.
  • the present invention also provides a portable drilling rig comprising a chassis, the rig is provided with a rig, the rig is provided with a power head rail, and the power head is mounted on the power head rail and is opposite to the power head track
  • the power head is provided with a power head water seal structure, and the water seal structure comprises a power head main shaft and a water seal inner sleeve fixedly arranged on the power head main shaft, and the power head main shaft is axially provided with a drilling fluid passage, water A water seal jacket is also arranged on the outer sleeve of the seal, and the water seal jacket is installed on the power head casing.
  • the water seal jacket and the water seal inner sleeve each have a water injection port leading to the drilling fluid passage, wherein the water seal inner sleeve and the water seal
  • a support ring is arranged between the two sets of sealing rings.
  • the support ring has a water inlet communicating with the water inlet.
  • the lower end of the water seal is connected with water.
  • Adjusting ring for adjusting the upper and lower sides of the coat The joint ring presses the lower combined seal ring. When the adjusting ring moves upward, the two sets of combined seals are radially deformed under pressure and compensate for the wear of the combined seal.
  • the beneficial effects of the present invention are:
  • the water seal structure of the present invention is provided with two sets of upper and lower distributed sealing rings between the water seal inner sleeve and the water seal outer jacket, and the lower end of the water seal outer sleeve is connected with an adjusting ring, when combined sealing After the ring wears, under the action of the pressure, the combined sealing ring can still be sealed.
  • the adjusting ring can be pressed to compress the combined sealing ring to cause radial deformation, which can be further compensated. It can be sealed to prevent harmful solid phases from entering the friction pair, eliminating the need to frequently replace the combination seals and prolonging the service life.
  • FIG. 1 is a schematic structural view of an embodiment of the present invention
  • Figure 2 is a partial cross-sectional view of Figure 1;
  • Figure 3 is a partial enlarged view of A in Figure 2;
  • FIG. 4 is a schematic structural view of a combined sealing ring in an embodiment of the present invention.
  • the drilling machine of the present invention has a chassis on which a rig is disposed, and a power head rail is disposed on the rig, and the power head is mounted on the power head rail and slidable relative to the power head rail.
  • a power head water seal structure is arranged on the power head. Referring to FIG. 1 and FIG.
  • the power head water seal structure of a portable drilling machine comprises a power head main shaft 2 and a water seal inner sleeve 1 fixedly mounted on the power head main shaft 2, and the power head main shaft 2 is axially
  • the drilling fluid channel 21 is provided, and the water sealing inner sleeve 1 is further provided with a water sealing jacket 3, and the water sealing jacket 3 is mounted on the power head casing 4, does not rotate with the power head main shaft 2, the water sealing jacket 3 and the water seal
  • the sleeve 1 runs through a water injection port 5 leading to the drilling fluid passage 21.
  • two sets of upper and lower distributed sealing rings 6 are arranged between the water seal inner sleeve 1 and the water seal outer sleeve 3.
  • the two sets of combined sealing rings 6 are symmetrically distributed vertically, and the two sets of combined sealing rings 6 are sandwiched.
  • the support ring 7 is provided with a plurality of water outlets 71 communicating with the water injection port 5 in the circumferential direction.
  • the water seal inner sleeve 1 extends through the plurality of water injection ports 5 in the circumferential direction, and the inner middle portion of the water seal inner sleeve 1 and the power
  • An annular cavity 12 is formed between the head spindles 2, and a 0-type sealing ring 13 is disposed above and below the annular cavity 12, and the power head main shaft 2 is provided with a plurality of through holes 22 connecting the annular cavity 12 and the drilling fluid passage 21, Increasing the flow velocity of the drilling fluid, at the same time, the plurality of through holes 22 are distributed along the axis direction of the main shaft 2 of the power head at different height sections, and the strength limit of the shearing force of the power head spindle 2 is not lowered.
  • the lower combined sealing ring includes an anti-extrusion ring 61, a V-ring 62 and a sand retaining ring 63 in order from bottom to top, wherein the V-ring 62 includes two V-shaped rubber rings 622 and two A V-shaped rubber ring 621, a V-shaped rubber ring 621 and a V-shaped rubber ring 622 are closely spaced apart, and the entire combined sealing ring 6 is radially expanded under axial compression.
  • the sand retaining ring 63 is made of a wear-resistant material, wherein the sand retaining ring 63 at the lower side is provided with a sealing lip 631 extending upwardly between the water seal inner sleeve 1 and the support ring 7, sealing
  • the lip 631 is gradually narrowed from the bottom to the top, and the inner side of the sealing lip 631 is fitted to the outer side of the water seal inner sleeve 1.
  • the inner side of the support ring 7 is provided with a slope 72 matching the outer side surface of the sealing lip 631, and the sealing lip is sealed.
  • the 631 always occupies with the water seal inner sleeve under the action of pressure, and can block most of the sand in the drilling fluid, thereby prolonging the service life of the combined sealing ring 6.
  • the lower end of the water sealing casing 3 is connected with an adjusting ring 8, which is screwed to the lower end of the water sealing casing 3, and the adjusting ring 8 is pressed against the anti-extrusion ring 61 through the gasket 9.
  • the combined seal ring 6 wears, under the action of the pressure, the combined seal ring 6 can still be sealed.
  • the adjustment ring 8 When the further wear pressure compensation can not seal the ⁇ , the adjustment ring 8 is adjusted, the adjustment ring 8 is moved upward, and the two sets of the combined seal ring 6 are subjected to The radial deformation is compressed and the wear of the combined sealing ring 6 is compensated, and the combined sealing ring 6 can still be sealed, thereby preventing the harmful solid phase from entering the friction pair.
  • the water sealing outer casing 3 is further provided with a locking ring for locking the adjusting ring 8. 14. Prevent the adjustment ring 8 from being displaced by vibration.
  • the water seal jacket 3 is floatingly mounted on the power head casing 4 by means of spring compression. Specifically, the water seal jacket 3 is provided with a flange 31, and the flange 31 passes through at least two equal height limit bolts 10. Installed on the power head housing 4, the flange 31 is sleeved on the polished rod of the contour limiting bolt 10, and is connected to the head of the contour limiting bolt 10 by the spring 11, and the floating fixing structure of the water sealing jacket 3 can ensure The power head spindle 2 is swung and automatically applied to ensure that no gap is formed between the combination seal 6 and the water seal inner sleeve 1 to prevent harmful solid phase from entering the friction pair.
  • the power head water seal structure of the drilling machine of the present invention is mainly used on a portable drilling machine. After the combined seal ring is worn by the water seal structure of the present invention, the combined seal ring can still be sealed under the action of pressure, and further wears. The pressure compensation can not seal the ⁇ . By adjusting the adjusting ring, the combined sealing ring is pressed to make it radial deformation, which can be further compensated and still sealed, thus preventing harmful solid phase from entering the friction pair, eliminating the need to frequently change the combined sealing ring and prolonging The service life of the seal.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Gasket Seals (AREA)

Abstract

一种便携式钻机及其动力头水封结构,涉及钻机技术领域,该动力头水封结构包括动力头主轴(2)和固定套设在动力头主轴(2)上的水封内套(1),动力头主轴(2)沿轴向开设有钻井液通道(21),水封内套(1)外还套设有水封外套(3),水封外套(3)安装在动力头外壳(4)上,水封外套(3)和水封内套(1)均贯穿有通向钻井液通道(21)的注水口(5),其中,水封内套(1)和水封外套(3)之间设有两组上下分布的组合密封圈(6),两组组合密封圈(6)之间夹设有支撑环(7),支撑环(7)上贯穿有与注水口(5)相通的通水口(71),水封外套(3)下端连接有可相对水封外套(3)上下调节的调节环(8),调节环(8)压紧处于下方的组合密封圈(6),当调节环(8)向上移动时,两组组合密封圈(6)受压径向变形并补偿组合密封圈(6)的磨损。

Description

技术领域
[0001] 本发明涉及钻机技术领域, 尤其涉及一种便携式钻机及其动力头水封结构。 本 发明是基于申请日为 2017年 6月 19日、 申请号为 CN 201710462273.1的中国发明专 利申请, 该申请的内容引入本文作为参考。
背景技术
[0002] 传统的便携式全液压钻机顶驱动力头的水封密封基本上采用的是补偿能力比较 弱的旋转压力密封或 0型圈密封, 在实际应用中, 这种密封圈的寿命短、 更换麻 烦, 且旋转压力密封成本高, 特别是在使用含固相的钻井液或循环钻井液的工 况下, 由于钻井液中含有一定的固相物, 密封圈极易损坏, 更换频繁, 影响工 作效率。
[0003] 另外, 由于传统的便携式全液压钻机水封外套是固定在动力头外壳上的, 当高 速旋转的动力头主轴发生摆动吋, 水封外套没有自适应功能, 水封内套与密封 件之间由于摆动的产生间隙, 钻井液中的固相物, 例如细砂将进入到这些间隙 中加剧摩擦副的磨损, 这也是传统水封密封件寿命短的一个重要原因。
技术问题
[0004] 为了克服上述现有技术的不足, 本发明提供一种便携式钻机的动力头水封结构
, 其具有较强的调节补偿能力, 能够延长寿命, 无需频繁更换密封件。
[0005] 此外, 本发明还提供一种具有上述动力头水封结构的便携式钻机。
[0006] 技术解决手段
[0007] 本发明解决其技术问题所采用的技术方案是提供一种便携式钻机的动力头水封 结构, 包括动力头主轴和固定套设在动力头主轴上的水封内套, 动力头主轴沿 轴向幵设有钻井液通道, 水封内套外还套设有水封外套, 水封外套安装在动力 头外壳上, 水封外套和水封内套均贯穿有通向钻井液通道的注水口, 其中, 水 封内套和水封外套之间设有两组上下分布的组合密封圈, 两组组合密封圈之间 夹设有支撑环, 支撑环上贯穿有与注水口相通的通水口, 水封外套下端连接有 可相对水封外套上下调节的调节环, 调节环压紧处于下方的组合密封圈, 当调 节环向上移动吋, 两组组合密封圈受压径向变形并补偿组合密封圈的磨损。
[0008] 优选的, 两组组合密封圈上下对称分布, 处于下方的组合密封圈由下至上依次 包括防挤压环、 V型圈和挡沙圈。
[0009] 优选的, V型圈包括两个 V型橡胶圈和两个 V型夹布橡胶圈, 且 V型夹布橡胶圈 和 V型橡胶圈间隔紧贴设置。
[0010] 优选的, 处于下方的挡沙圈设有向上延伸至水封内套与支撑环之间的密封唇边
, 密封唇边由下往上逐渐变窄, 且密封唇边内侧与水封内套的外侧贴合。
[0011] 优选的, 支撑环内侧设有与密封唇边外侧面相匹配的斜面。 并且, 调节环通过 垫圈压紧防挤压环。
[0012] 优选的, 水封外套设有法兰, 法兰通过至少两个限位螺栓安装在动力头外壳上
, 法兰套在限位螺栓的光杆上, 并通过弹簧连接限位螺栓的头部。 进一步的, 两个限位螺栓为等高的限位螺栓。
[0013] 优选的, 支撑环沿周向贯穿有多个通水口, 水封内套沿周向贯穿多个注水口, 水封内套内侧中段与动力头主轴之间形成一环形腔, 环形腔上方和下方均设有 0 型密封圈。
[0014] 优选的, 动力头主轴幵设有多个连通环形腔与钻井液通道的通孔, 多个通孔沿 动力头主轴轴线方向分布在不同高度截面上。
[0015] 优选的, 调节环螺纹连接在水封外套下端, 水封外套上还设有用于锁定调节环 的防松环。
[0016] 并且, 本发明还提供一种便携式钻机, 包括底架, 底架上设置有钻塔, 钻塔上 设置有动力头轨道, 动力头安装在动力头轨道上并可相对于动力头轨道滑动, 动力头上设置有动力头水封结构, 该水封结构包括动力头主轴和固定套设在动 力头主轴上的水封内套, 动力头主轴沿轴向幵设有钻井液通道, 水封内套外还 套设有水封外套, 水封外套安装在动力头外壳上, 水封外套和水封内套均贯穿 有通向钻井液通道的注水口, 其中, 水封内套和水封外套之间设有两组上下分 布的组合密封圈, 两组组合密封圈之间夹设有支撑环, 支撑环上贯穿有与注水 口相通的通水口, 水封外套下端连接有可相对水封外套上下调节的调节环, 调 节环压紧处于下方的组合密封圈, 当调节环向上移动吋, 两组组合密封圈受压 径向变形并补偿组合密封圈的磨损。
问题的解决方案
发明的有益效果
有益效果
[0017] 本发明的有益效果是: 本发明的水封结构在水封内套和水封外套之间设有两组 上下分布的组合密封圈, 水封外套下端连接有调节环, 当组合密封圈发生磨损 后, 在压力的作用下, 组合密封圈仍然能密封, 当进一步磨损压力补偿无法密 封吋, 通过调节调节环, 压紧组合密封圈, 使其发生径向变形, 可进一步补偿 , 仍然能密封, 从而防止有害固相进入摩擦副中, 无需频繁更换组合密封圈, 延长使用寿命。
对附图的简要说明
附图说明
[0018] 下面结合附图及具体实施例对本发明作进一步说明, 其中:
[0019] 图 1是本发明实施例的结构示意图;
[0020] 图 2是图 1的局部剖视图;
[0021] 图 3是图 2中 A处的局部放大图;
[0022] 图 4是本发明实施例中组合密封圈的结构示意图。
本发明的实施方式
[0023] 本发明的钻机具有底架, 在底架上设置有钻塔, 钻塔上设置有动力头轨道, 动 力头安装在动力头轨道上并可相对于动力头轨道滑动。 为了实现对动力头的密 封, 在动力头上设置了动力头水封结构。 参见图 1和图 2, 本发明提供的一种便 携式钻机的动力头水封结构包括动力头主轴 2和固定套设在动力头主轴 2上的水 封内套 1, 动力头主轴 2沿轴向幵设有钻井液通道 21, 水封内套 1外还套设有水封 外套 3, 水封外套 3安装在动力头外壳 4上, 不随动力头主轴 2转动, 水封外套 3和 水封内套 1均贯穿有通向钻井液通道 21的注水口 5。 [0024] 参见图 2, 水封内套 1和水封外套 3之间设有两组上下分布的组合密封圈 6, 两组 组合密封圈 6上下对称分布, 两组组合密封圈 6之间夹设有支撑环 7, 支撑环 7沿 周向贯穿有多个与注水口 5相通的通水口 71, 水封内套 1沿周向贯穿多个注水口 5 , 水封内套 1内侧中段与动力头主轴 2之间形成一环形腔 12, 环形腔 12上方和下 方均设有 0型密封圈 13, 动力头主轴 2幵设有多个连通环形腔 12与钻井液通道 21 的通孔 22, 能够增加钻井液的流动速度, 同吋, 多个通孔 22沿动力头主轴 2轴线 方向分布在不同高度截面上, 不会降低动力头主轴 2承受剪切力的强度极限。
[0025] 参见图 4, 处于下方的组合密封圈由下至上依次包括防挤压环 61、 V型圈 62和挡 沙圈 63, 其中, V型圈 62包括两个 V型橡胶圈 622和两个 V型夹布橡胶圈 621, V型 夹布橡胶圈 621和 V型橡胶圈 622间隔紧贴设置, 整个组合密封圈 6在轴向受压吋 会径向扩张。
[0026] 参见图 3, 挡沙圈 63采用耐磨材料制成, 其中, 处于下方的挡沙圈 63设有向上 延伸至水封内套 1与支撑环 7之间的密封唇边 631, 密封唇边 631由下往上逐渐变 窄, 且密封唇边 631的内侧与水封内套 1的外侧贴合, 支撑环 7内侧设有与密封唇 边 631外侧面相匹配的斜面 72, 密封唇边 631在压力的作用下始终与水封内套 1贝占 合, 可以将钻井液中大部分的沙粒阻挡住, 从而延长组合密封圈 6的使用寿命。
[0027] 为了减少组合密封圈 6的更换频次, 水封外套 3下端连接有调节环 8, 调节环 8螺 接在水封外套 3下端, 调节环 8通过垫圈 9压紧防挤压环 61, 当组合密封圈 6发生 磨损后, 在压力的作用下, 组合密封圈 6仍然能密封, 当进一步磨损压力补偿无 法密封吋, 调节调节环 8, 调节环 8向上移动, 两组组合密封圈 6受压径向变形并 补偿组合密封圈 6的磨损, 组合密封圈 6仍然能够密封, 从而防止有害固相进入 摩擦副中, 此外, 水封外套 3上还设有用于锁定调节环 8的防松环 14, 防止调节 环 8受振动移位。
[0028] 另外, 水封外套 3采用弹簧压紧的方式浮动安装在动力头外壳 4上, 具体地, 水 封外套 3设有法兰 31, 法兰 31通过至少两个等高限位螺栓 10安装在动力头外壳 4 上, 法兰 31套在等高限位螺栓 10的光杆上, 并通过弹簧 11连接等高限位螺栓 10 的头部, 水封外套 3的浮动式固定结构, 能保证动力头主轴 2摆动吋, 自动适用 , 确保组合密封圈 6与水封内套 1之间不产生间隙, 避免有害固相进入摩擦副。 [0029] 以上所述, 只是本发明的较佳实施方式而已, 但本发明并不限于上述实施例, 只要其以任何相同或相似手段达到本发明的技术效果, 都应属于本发明的保护 范围。
[0030] 工业应用性
[0031] 本发明的钻机动力头水封结构主要用于便携式钻机上, 通过本发明的水封结构 在组合密封圈发生磨损后, 在压力的作用下, 组合密封圈仍然能密封, 当进一 步磨损压力补偿无法密封吋, 通过调节调节环, 压紧组合密封圈, 使其发生径 向变形, 可进一步补偿, 仍然能密封, 从而防止有害固相进入摩擦副中, 无需 频繁更换组合密封圈, 延长密封圈的使用寿命。

Claims

权利要求书
[权利要求 1] 一种便携式钻机的动力头水封结构, 包括动力头主轴和固定套设在所 述动力头主轴上的水封内套, 所述动力头主轴沿轴向幵设有钻井液通 道, 所述水封内套外还套设有水封外套, 所述水封外套安装在动力头 外壳上, 所述水封外套和水封内套均贯穿有通向钻井液通道的注水口 , 其特征在于:
所述水封内套和所述水封外套之间设有两组上下分布的组合密封圈, 两组所述组合密封圈之间夹设有支撑环, 所述支撑环上贯穿有与所述 注水口相通的通水口, 所述水封外套下端连接有可相对所述水封外套 上下调节的调节环, 所述调节环压紧处于下方的所述组合密封圈, 当 所述调节环向上移动吋, 两组所述组合密封圈受压径向变形并补偿所 述组合密封圈的磨损。
[权利要求 2] 根据权利要求 1所述的一种便携式钻机的动力头水封结构, 其特征在 于: 两组所述组合密封圈上下对称分布, 处于下方的所述组合密封圈 由下至上依次包括防挤压环、 V型圈和挡沙圈。
[权利要求 3] 根据权利要求 2所述的一种便携式钻机的动力头水封结构, 其特征在 于: 所述 V型圈包括两个 V型橡胶圈和两个 V型夹布橡胶圈, 且所述 V 型夹布橡胶圈和所述 V型橡胶圈间隔紧贴设置。
[权利要求 4] 根据权利要求 2或 3所述的一种便携式钻机的动力头水封结构, 其特征 在于: 处于下方的所述挡沙圈设有向上延伸至所述水封内套与所述支 撑环之间的密封唇边, 所述密封唇边由下往上逐渐变窄, 且所述密封 唇边内侧与所述水封内套的外侧贴合。
[权利要求 5] 根据权利要求 4所述的一种便携式钻机的动力头水封结构, 其特征在 于: 所述支撑环内侧设有与所述密封唇边外侧面相匹配的斜面。
[权利要求 6] 根据权利要求 3至 5任一项所述的一种便携式钻机的动力头水封结构, 其特征在于: 所述调节环通过垫圈压紧所述防挤压环。
[权利要求 7] 根据权利要求 1至 6任一项所述的一种便携式钻机的动力头水封结构, 其特征在于: 所述水封外套设有法兰, 所述法兰通过至少两个限位螺 栓安装在所述动力头外壳上, 所述法兰套在所述限位螺栓的光杆上, 并通过弹簧连接所述限位螺栓的头部。
[权利要求 8] 根据权利要求 7所述的一种便携式钻机的动力头水封结构, 其特征在 于: 两个所述限位螺栓为等高的限位螺栓。
[权利要求 9] 根据权利要求 1至 8任一项所述的一种便携式钻机的动力头水封结构, 其特征在于: 所述支撑环沿周向贯穿有多个所述通水口, 所述水封内 套沿周向贯穿多个所述注水口, 所述水封内套内侧中段与所述动力头 主轴之间形成一环形腔, 所述环形腔上方和下方均设有 0型密封圈。
[权利要求 10] 根据权利要求 9所述的一种便携式钻机的动力头水封结构, 其特征在 于: 所述动力头主轴幵设有多个连通所述环形腔与所述钻井液通道的 通孔, 多个所述通孔沿所述动力头主轴轴线方向分布在不同高度截面 上。
[权利要求 11] 根据权利要求 1至 10任一项所述的一种便携式钻机的动力头水封结构 , 其特征在于: 所述调节环螺纹连接在所述水封外套下端, 所述水封 外套上还设有用于锁定所述调节环的防松环。
[权利要求 12] —种便携式钻机, 包括底架, 所述底架上设置有钻塔, 所述钻塔上设 置有动力头轨道, 动力头安装在所述动力头轨道上并可相对于所述动 力头轨道滑动, 所述动力头上设置有动力头水封结构, 该水封结构包 括动力头主轴和固定套设在所述动力头主轴上的水封内套, 所述动力 头主轴沿轴向幵设有钻井液通道, 所述水封内套外还套设有水封外套 , 所述水封外套安装在动力头外壳上, 所述水封外套和水封内套均贯 穿有通向钻井液通道的注水口, 其特征在于:
所述水封内套和所述水封外套之间设有两组上下分布的组合密封圈, 两组所述组合密封圈之间夹设有支撑环, 所述支撑环上贯穿有与所述 注水口相通的通水口, 所述水封外套下端连接有可相对所述水封外套 上下调节的调节环, 所述调节环压紧处于下方的所述组合密封圈, 当 所述调节环向上移动吋, 两组所述组合密封圈受压径向变形并补偿所 述组合密封圈的磨损。
[权利要求 13] 根据权利要求 12所述的一种便携式钻机, 其特征在于: 两组所述组合 密封圈上下对称分布, 处于下方的所述组合密封圈由下至上依次包括 防挤压环、 V型圈和挡沙圈。
[权利要求 14] 根据权利要求 13所述的一种便携式钻机, 其特征在于: 所述 V型圈包 括两个 V型橡胶圈和两个 V型夹布橡胶圈, 且所述 V型夹布橡胶圈和 所述 V型橡胶圈间隔紧贴设置。
[权利要求 15] 根据权利要求 13或 14所述的一种便携式钻机, 其特征在于: 处于下方 的所述挡沙圈设有向上延伸至所述水封内套与所述支撑环之间的密封 唇边, 所述密封唇边由下往上逐渐变窄, 且所述密封唇边内侧与所述 水封内套的外侧贴合。
[权利要求 16] 根据权利要求 15所述的一种便携式钻机, 其特征在于: 所述支撑环内 侧设有与所述密封唇边外侧面相匹配的斜面。
[权利要求 17] 根据权利要求 14至 16任一项所述的一种便携式钻机, 其特征在于: 所 述调节环通过垫圈压紧所述防挤压环。
[权利要求 18] 根据权利要求 12至 17任一项所述的一种便携式钻机, 其特征在于: 所 述水封外套设有法兰, 所述法兰通过至少两个限位螺栓安装在所述动 力头外壳上, 所述法兰套在所述限位螺栓的光杆上, 并通过弹簧连接 所述限位螺栓的头部。
[权利要求 19] 根据权利要求 18所述的一种便携式钻机, 其特征在于: 两个所述限位 螺栓为等高的限位螺栓。
[权利要求 20] 根据权利要求 12至 19任一项所述的一种便携式钻机, 其特征在于: 所 述支撑环沿周向贯穿有多个所述通水口, 所述水封内套沿周向贯穿多 个所述注水口, 所述水封内套内侧中段与所述动力头主轴之间形成一 环形腔, 所述环形腔上方和下方均设有 0型密封圈。
[权利要求 21] 根据权利要求 20所述的一种便携式钻机, 其特征在于: 所述动力头主 轴幵设有多个连通所述环形腔与所述钻井液通道的通孔, 多个所述通 孔沿所述动力头主轴轴线方向分布在不同高度截面上。
[权利要求 22] 根据权利要求 12至 21任一项所述的一种便携式钻机, 其特征在于: 所 述调节环螺纹连接在所述水封外套下端, 所述水封外套上还设有用于 锁定所述调节环的防松环。
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CN203114159U (zh) * 2013-01-05 2013-08-07 江苏地龙重型机械有限公司 旋转水封装置
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CN203729875U (zh) * 2014-01-24 2014-07-23 桂林市华力重工机械有限责任公司 一种用于钻机的旋转水封装置
CN107191600A (zh) * 2017-06-19 2017-09-22 珠海市英格尔特种钻探设备有限公司 一种便携式钻机的动力头水封结构
CN206943435U (zh) * 2017-06-19 2018-01-30 珠海市英格尔特种钻探设备有限公司 一种便携式钻机的动力头水封结构

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CN112601444A (zh) * 2020-12-29 2021-04-02 西安永兴科技发展有限公司 一种新型复合材料伸缩节结构
CN115183834A (zh) * 2021-03-23 2022-10-14 常州江苏大学工程技术研究院 一种预埋式液位监测仪及预埋方法
CN115183834B (zh) * 2021-03-23 2023-11-17 厦门忻德监测科技有限公司 一种预埋式液位监测仪及预埋方法

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