WO2014053103A1 - 大口径螺纹保护器 - Google Patents

大口径螺纹保护器 Download PDF

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Publication number
WO2014053103A1
WO2014053103A1 PCT/CN2013/086502 CN2013086502W WO2014053103A1 WO 2014053103 A1 WO2014053103 A1 WO 2014053103A1 CN 2013086502 W CN2013086502 W CN 2013086502W WO 2014053103 A1 WO2014053103 A1 WO 2014053103A1
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WO
WIPO (PCT)
Prior art keywords
thread
iron shell
plastic part
bayonet
plastic
Prior art date
Application number
PCT/CN2013/086502
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English (en)
French (fr)
Inventor
乔士军
Original Assignee
无锡市红叶塑钢制品有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 无锡市红叶塑钢制品有限公司 filed Critical 无锡市红叶塑钢制品有限公司
Publication of WO2014053103A1 publication Critical patent/WO2014053103A1/zh
Priority to SA515360222A priority Critical patent/SA515360222B1/ar

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Classifications

    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/005—Protection of pipes or objects of similar shape against external or internal damage or wear specially adapted for the ends of pipes
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/006—Accessories for drilling pipes, e.g. cleaners

Definitions

  • the utility model relates to a cap for protecting a thread of a steel pipe and a pipe end, in particular to a thread protector suitable for a steel pipe for oil and natural gas with a diameter of 20 inches or more.
  • the thread protector is mainly used to prevent the pipe thread and pipe end of oil and natural gas from being damaged during normal loading and unloading and transportation, preventing the thread from infiltrating dust and water during transportation and normal storage, and helping to invade by humid gas or Corrosion caused by detention is minimized.
  • the known thread protector is a full plastic structure, which mainly has the following defects: 1) Temperature change plastic thermal deformation, protector product size and steel pipe thread matching accuracy cannot be controlled; high temperature thread protector is detached, low temperature thread protector cannot be disassembled 2) The impact resistance of the all-plastic thread protector cannot meet the requirements of API Spec 5CT/IS0 11960; 3) The installation requires attachment to fix the thread protector during transportation; 4) Large-diameter thread protector Large size is difficult to manufacture, product is heavy, and installation and disassembly are inconvenient.
  • the purpose of the utility model is to provide an extra large diameter thread protector of 20 inches or more, which can effectively prevent the pipeline thread and the pipe end of oil and natural gas from being damaged during normal loading and unloading and transportation, and prevent the thread from being transported and stored normally.
  • Infiltration of dust and water during the period helps to minimize corrosion caused by intrusion or retention of humid gas, has a lighter structure, and is easy to install and disassemble. Moreover, it is easy to manufacture and manufacture in a cost-effective manner.
  • the utility model adopts the following technical solutions: It comprises an iron shell 1, a bayonet 2, a plastic part 3 and a thread 4, and the iron shell 1 is internally provided with a through hole 5, the inside of the iron shell 1 is provided with a plastic member 3, and the iron shell 1 is connected to the plastic member 3 through the bayonet 2, the thread 4 is disposed inside the plastic 3; or the iron shell 1 is disposed inside the plastic member 3, and The iron shell 1 is connected to the plastic part 3 through a bayonet, and the thread 4 is arranged outside the plastic part 3.
  • an elastic groove (6) is designed at the junction of the pipe body and the product.
  • the iron shell 1 and the plastic part 3 of the present invention are connected by the bayonet 2, so that the iron shell 1 and the plastic part 3 are not separated after being subjected to an impact.
  • the hard iron shell 1 has good impact resistance, and the plastic parts have good cushioning and shock absorption, effectively protecting the inner parts of the tube head.
  • the large-diameter thread protector through-hole structure design is light in weight, and the large-diameter thread protector is installed without an accessory, which can be operated by one person.
  • the utility model can effectively prevent the pipeline thread and the pipe end of the oil and natural gas from being damaged during normal loading and unloading and transportation, preventing the thread from infiltrating dust and water during transportation and normal storage, and helping to invade or stay with moisture gas.
  • the corrosion caused is minimized, the structure is light, and the installation and disassembly are convenient. Moreover, it is easy to manufacture and manufacture in a cost-effective manner.
  • Embodiment 1 is a schematic structural view of Embodiment 1;
  • Embodiment 2 is a schematic structural view of Embodiment 2;
  • Figure 3 is a schematic structural view of the third embodiment
  • Figure 4 is a schematic view showing the structure of the fourth embodiment.
  • FIG. 1 the following technical solution is adopted in the following embodiments: It comprises an iron shell 1, a bayonet 2, a plastic part 3 and a thread 4, and the inside of the iron shell 1 is provided with a plastic part 3, and the iron shell 1 Connected to the plastic part 3 through the bayonet 2, the thread 4 is arranged in the plastic part
  • the iron shell 1 is internally provided with a through hole 5.
  • the iron shell 1 and the plastic member 3 are connected to each other to prevent the iron shell 1 and the plastic member 3 from being separated.
  • the hard iron shell 1 has good impact resistance, and the plastic parts have good cushioning and impact absorption, effectively protecting the inner parts of the tube head.
  • the large-diameter thread protector through-hole design is lightweight, and the large-diameter thread protector is installed without an attachment and can be operated by one person.
  • the embodiment can effectively prevent the pipe thread and the pipe end of the oil and natural gas from being damaged during normal loading and unloading and transportation, prevent the thread from infiltrating dust and water during transportation and normal storage, and help to invade by humid gas or The corrosion caused by the detention is minimized, and the structure is light, and the installation and disassembly are convenient. And can be advantageously produced and versatile in cost.
  • the large diameter is 20 inches or more; one end of the protector is further provided with an elastic groove 6; the elastic groove 6 is disposed on the plastic member 3; the bayonet 2 and the elastic groove 6 Keep away from each other.
  • the top of the iron shell 1 is punched into a circular arc shape, which enhances the impact resistance of the protector, and the outer shape of the iron shell is stamped into a curved surface so that it is not easily deformed.
  • the bayonet 2 is formed by punching on the iron shell 1, and the buckle 2 integrates the iron shell 1 and the plastic part 3, and the iron shell is deformed after the protector is subjected to an external force. 1 and the plastic part 3 is not separated, and the tube thread is more effectively protected from damage.
  • the plastic part 3 is molded by compression molding (non-injection molding process), which breaks through the difficulty of injection molding of large plastic parts, so that the thickness of the protector is sufficient for maximum buffering, and the protector is easy to process into various threads, thereby improving the generality of the protector. Sex.
  • the thread 4 is arranged on the plastic part 3, and is machined by the machine tool, so that the thread 4 can be more easily and accurately processed into various specifications of threads, and the precise matching of the thread 4 can be improved to achieve the maximum universality. Sex.
  • the elastic groove 6 works as follows: When the thread protector is sleeved with a large diameter pipe thread and is rotatably mounted, the thread 4 and the pipe thread are tightened more tightly, and the end of the plastic piece 3 may be threaded with the pipe thread due to manufacturing errors. The root portion cannot be completely sealed. When the elastic groove 6 is provided at the end of the plastic member 3, since the elastic groove 6 has a groove, it can be compressed, and the thread 4 and the pipe thread can be rotated by about half a turn. The protector is more effectively integrated with the pipe body and has good sealing properties, so that dust, water and other corrosive dirt cannot enter the broken thread.
  • Embodiment 3 Referring to FIG. 3, the specific embodiment is different from Embodiment 1 in that the iron shell 1 is disposed on the inner side of the plastic 3, and the iron shell 1 and the plastic 3 are connected through a bayonet, and the thread 4 is disposed. On the outside of the plastic 3, other compositions and connection relationships are the same as in the first embodiment.
  • Embodiment 4 Referring to FIG. 4, the specific embodiment is different from Embodiment 2 in that the iron shell (1) is disposed inside the plastic member (3), and the iron shell (1) and the plastic member ( 3) Through the bayonet connection, the thread (4) is placed on the outside of the plastic part (3), and the elastic groove (5) is placed at the end of the product.
  • the other components and connection relationships are the same as in the second embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Valve Housings (AREA)

Abstract

大口径螺纹保护器，它涉及到用于石油套管，油田输油，输气管道和各种大口经管材端部螺纹保护器领域，它包括铁壳(1)、卡口(2)、塑料件(3)及螺纹(4)，铁壳(1)内部设置有通孔(5)，铁壳(1)的内部设置有塑料件(3)，且铁壳(1)与塑料件(3)通过卡口(2)连接，螺纹(4) 设置在塑料件(3)内侧；或者铁壳(1)设置在塑料件(3)的内侧，且铁壳(1)与塑料件(3)通过卡口连接，螺纹(4)设置在塑料件(3)的外侧。

Description

大口径螺紋保护器
技术领域：
本实用新型涉及一种用于保护钢管螺紋和管端的帽子，具体涉及 一种适用于 20英寸以上特大口径的石油、 天然气用钢管的螺紋保护 器。
背景技术：
螺紋保护器主要用于防止石油、天然气用管螺紋和管端在正常的 装卸和运输途中受损，防止螺紋在运输过程中和正常贮存期间渗入灰 尘和水， 有助于使由潮湿气体侵入或滞留造成的腐蚀降至最低。
已知的螺紋保护器为全塑结构， 主要存在以下几个缺陷： 1)气温 变化塑料热变形， 保护器产品尺寸和钢管螺紋配合精度无法控制； 高 温螺紋保护器脱落， 低温螺紋保护器无法拆卸； 2)全塑螺紋保护器抗 冲击强度无法满足 API Spec 5CT/IS0 11960的要求； 3)安装需要安 装附件固定， 才能保证产品在运输过程中螺紋保护器不脱落； 4)大口 径螺紋保护器尺寸大制造困难， 产品重， 安装、 拆卸不方便。
实用新型内容：
本实用新型的目的是提供一种 20 英寸以上特大口径螺紋保护 器， 它能有效防止石油、天然气用管螺紋和管端在正常的装卸和运输 途中受损， 防止螺紋在运输过程中和正常贮存期间渗入灰尘和水， 有 助于使由潮湿气体侵入或滞留造成的腐蚀降至最低， 具有较轻的结 构，安装、拆卸方便。且能简便加工制造在成本上有利地生产和通用。
为了解决背景技术所存在的问题，本实用新型是采用以下技术方 案： 它包括铁壳 1、 卡口 2、 塑料件 3及螺紋 4， 铁壳 1内部设置有 通孔 5， 铁壳 1的内部设置有塑料件 3， 且铁壳 1与塑料件 3通过卡 口 2连接， 螺紋 4设置在塑料 3内侧； 或者铁壳 1设置在塑料件 3的 内侧， 且铁壳 1与塑料件 3通过卡口连接， 螺紋 4设置在塑料件 3的 外侧。 且在管体与产品结合处设计有弹性槽 （6)。
本实用新型铁壳 1和塑料件 3采用卡口 2连接，使铁壳 1和塑料 件 3在受到冲击后不分离。坚硬的铁壳 1具有良好的抗冲击能力， 塑 料件具有良好的缓冲吸收冲击力， 有效保护里面的管头各部分。大口 径螺紋保护器通孔结构设计产品重量轻，安装大口径螺紋保护器无需 附件， 一个人可以操作。
本实用新型能有效防止石油，天然气用管螺紋和管端在正常的装 卸和运输途中受损，防止螺紋在运输过程中和正常贮存期间渗入灰尘 和水， 有助于使由潮湿气体侵入或滞留造成的腐蚀降至最低， 具有较 轻的结构， 安装、 拆卸方便。 且能简便加工制造在成本上有利地生产 和通用。
附图说明：
图 1是实施例一的结构示意图；
图 2是实施例二的结构示意图；
图 3是实施例三的结构示意图；
图 4是是实施例四的结构示意图。
具体实施方式：
具体实施例一： 参看图 1， 本具体实施方式采用以下技术方案： 它包括铁壳 1、 卡口 2、 塑料件 3及螺紋 4， 铁壳 1的内部设置有塑 料件 3， 且铁壳 1与塑料件 3通过卡口 2连接， 螺紋 4设置在塑料件 所述的铁壳 1内部设置有通孔 5。
本具体实施方式铁壳 1和塑料件 3卡口连接，防止铁壳 1和塑料 件 3分离。坚硬的铁壳 1具有良好的抗冲击能力， 塑料件具有良好的 缓冲吸收冲击力， 有效保护里面的管头各部分。大口径螺紋保护器通 孔结构设计产品重量轻， 安装大口径螺紋保护器无需附件， 一个人可 以操作。
本具体实施方式能有效防止石油、天然气用管螺紋和管端在正常 的装卸和运输途中受损，防止螺紋在运输过程中和正常贮存期间渗入 灰尘和水， 有助于使由潮湿气体侵入或滞留造成的腐蚀降至最低， 具 有较轻的结构， 安装、 拆卸方便。 并能在成本上有利地生产和通用。
具体实施例二： 参看图 2
与是实施例一基本相同， 不同的是， 所述大口径为 20英寸以上; 保护器的一端部还设置一弹性槽 6; 弹性槽 6设置在塑料件 3上； 卡 口 2和弹性槽 6相互远离。
铁壳 1顶部冲压成圆弧形， 增强了保护器的抗撞击能力， 铁壳外 形冲压成曲面使其不容易变形。
铁壳 1压入塑料件 3后， 通过在铁壳 1上冲压形成卡口 2， 该卡 扣 2使铁壳 1与塑料件 3两者成为一体，在保护器受到外力撞击变形 后， 铁壳 1和塑料件 3不分离， 更加有效的保护管体螺紋不被损坏。
塑料件 3采用压塑工艺模压制造 （非注塑工艺）， 突破了大型塑 件注塑困难问题， 使保护器厚度足够有最大的缓冲， 也使保护器易加 工成各种螺紋， 提高保护器的通用性。
螺紋 4设置在塑料件 3上，通过机床机加工， 使螺紋 4能更简便 精确的加工成各种规格螺紋，提高螺紋 4的精确配合达到最大的通用 性。
弹性槽 6是这样工作的： 当螺紋保护器套上大口径管螺紋， 并旋 转安装时， 螺紋 4与管螺紋越旋越紧， 由于制造的误差， 塑料件 3的 端部可能与管螺紋的根部不能完全密封，当在塑料件 3的端部设置了 弹性槽 6后， 由于弹性槽 6上有凹槽， 可被压缩， 螺紋 4与管螺紋还 能旋转半圈左右，这样的设计能使保护器更加有效的和管体结合成一 体，密封性好，使灰尘、水和其他有腐蚀性的污物不能进入破坏螺紋。
实施例三： 参看图 3， 本具体实施方式与具体实施方式一的不同 之处在于所述的铁壳 1设置在塑料 3的内侧，且铁壳 1与塑料 3通过 卡口连接， 螺紋 4设置在塑料 3的外侧， 其他组成与连接关系与具体 实施方式一相同。
实施例四： 参看图 4， 本具体实施方式与具体实施方式二的不同 之处在于所述的铁壳 （1 ) 设置在塑料件 （3 ) 的内侧， 且铁壳 （1 ) 与塑料件 (3)通过卡口连接， 螺紋 (4)设置在塑料件 (3)的外侧， 弹性 槽 （5 ) 设置在产品端部。 其他组成与连接关系与具体实施方式二相 同。

Claims

权 利 要 求 书
1、 大口径螺紋保护器， 其特征在于它包括铁壳（1)、 卡口（2)、 塑料 件 (3)及螺紋 (4)， 铁壳（1)内部设置有通孔 (5)， 铁壳（1)的内部设置 有塑料件 (3)， 且铁壳（1)与塑料件 (3)通过卡口（2)连接， 螺紋 (4)设 置在塑料件 (3)内侧； 或者铁壳 (1)设置在塑料件 (3)的内侧， 且铁壳 (1)与塑料件 (3)通过卡口连接， 螺紋 (4)设置在塑料件 (3)的外侧。
2、 根据权利要求 1所述的大口径螺紋保护器，其特征在于:所述大口 径为 20英寸以上； 所述保护器的一端部还设置一弹性槽 （6); 弹性 槽（6) 设置在塑料件（3) 的端部上； 卡口 （2) 和弹性槽（6) 相互 远离。
3、 根据权利要求 2所述的大口径螺紋保护器，其特征在于： 铁壳（1) 顶部冲压成圆弧形。
4、 根据权利要求 3所述的大口径螺紋保护器， 其特征在于:铁壳（1) 压入塑料件（3) 后， 通过在铁壳 （1) 上冲压形成卡口 （2)， 该卡口
(2) 与塑料件 （3) 上的凹槽配合， 形成倒刺作用， 使铁壳 （1) 与 塑料件 （3) 两者成为一体。
5、 据权利要求 4所述的大口径螺紋保护器，其特征在于： 塑料件（3) 采用压塑工艺模压制造。
6、 根据权利要求 5所述的大口径螺紋保护器， 其特征在于:螺紋（4) 是在机床上机加工形成的。
1
PCT/CN2013/086502 2012-12-19 2013-11-04 大口径螺纹保护器 WO2014053103A1 (zh)

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FR3030670A1 (fr) * 2014-12-23 2016-06-24 Vallourec Oil & Gas France Dispositif de protection d'une extremite d'un composant de joint filete tubulaire a joint souple

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